Release v0.3.10-beta04

Adjust popups in landscape mode

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 120
+trim_trailing_whitespace = true
+
+[{*.har,*.json}]
+indent_size = 2
+
+[*.kt]
+ij_kotlin_name_count_to_use_star_import = 99
+ij_kotlin_name_count_to_use_star_import_for_members = 99

.gitattributes

@@ -1 +1,2 @@
-* text=auto eol=lf
+* text=auto eol=lf
+*.bat text=auto eol=crlf

.github/ISSUE_TEMPLATE/bug_report.md

@@ -15,18 +15,21 @@ assignees: ''
 - Thank you for your help in making FlorisBoard better!
 -->
 
-**Environment information**
-- FlorisBoard Version: <!-- e.g. 0.1.0 -->
-- Install Source: <!-- Google PlayStore/F-Droid/GitHub/? -->
-- Device: <!-- e.g. OnePlus 7T -->
-- Android version, ROM: <!-- e.g. 10, Stock -->
+#### Short description
+Describe the bug in a short but concise way.
 
-**Steps to reproduce**
+#### Steps to reproduce
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
 
+#### Environment information
+- FlorisBoard Version: <!-- e.g. 0.3.6 -->
+- Install Source: <!-- Google PlayStore/F-Droid/GitHub/? -->
+- Device: <!-- e.g. OnePlus 7T -->
+- Android version, ROM: <!-- e.g. 10, Stock -->
+
 <!-- (remove this line if you paste a log)
 ```
 If applicable, paste the captured debug log here.

CONTRIBUTING.md

@@ -32,7 +32,7 @@ free to ask for help at any time!
 
 ## Adding a new keyboard layout / dictionary for locale
 
-You can now oficially add layouts to FlorisBoard as described below.
+You can now officially add layouts to FlorisBoard as described below.
 FlorisBoard's core has stabilized enough that adding new content is
 safe, although there will be some changes in the future.
 

README.md

@@ -1,14 +1,15 @@
 <img align="left" width="80" height="80"
 src="fastlane/metadata/android/en-US/images/icon.png" alt="App icon">
 
-# FlorisBoard [![Release](https://img.shields.io/github/v/release/florisboard/florisboard)](https://github.com/florisboard/florisboard/releases) [![Crowdin](https://badges.crowdin.net/florisboard/localized.svg)](https://crowdin.florisboard.patrickgold.dev) ![FlorisBoard CI](https://github.com/florisboard/florisboard/workflows/FlorisBoard%20CI/badge.svg?event=push)
+# FlorisBoard [![Crowdin](https://badges.crowdin.net/florisboard/localized.svg)](https://crowdin.florisboard.patrickgold.dev) ![FlorisBoard CI](https://github.com/florisboard/florisboard/workflows/FlorisBoard%20CI/badge.svg?event=push)
 
 **FlorisBoard** is a free and open-source keyboard for Android 6.0+
 devices. It aims at being modern, user-friendly and customizable while
-fully respecting your privacy. Currently in alpha/early-beta state.
+fully respecting your privacy. Currently in early-beta state.
 
-## Public Alpha Test Programme
-Wanna try it out on your device? Use one of the following options:
+### Stable [![Latest stable release](https://img.shields.io/github/v/release/florisboard/florisboard)](https://github.com/florisboard/florisboard/releases/latest)
+
+Releases on this track are in general stable and ready for everyday use, except for features marked as experimental. Use one of the following options to receive FlorisBoard's stable releases:
 
 _A. Get it on F-Droid_:
 
@@ -36,6 +37,16 @@ for and download FlorisBoard without prior joining the alpha group.
 
 _C. Use the APK provided in the release section of this repo_
 
+### Beta [![Latest beta release](https://img.shields.io/github/v/release/florisboard/florisboard?include_prereleases)](https://github.com/florisboard/florisboard/releases)
+
+Releases on this track are also in general stable and should be ready for everyday use, though crashes and bugs are more likely to occur. Use releases from this track if you want to get new features faster and give feedback for brand-new stuff. Options to get beta releases:
+
+_A. IzzySoft's repo for F-Droid_:
+
+[<img src="https://gitlab.com/IzzyOnDroid/repo/-/raw/master/assets/IzzyOnDroid.png" height="64" alt="IzzySoft repo badge">](https://apt.izzysoft.de/fdroid/index/apk/dev.patrickgold.florisboard.beta)
+
+_B. Use the APK provided in the release section of this repo_
+
 ### Giving feedback
 If you want to give feedback to FlorisBoard, there are several ways to
 do so, as listed [here](CONTRIBUTING.md#giving-general-feedback).
@@ -62,11 +73,9 @@ milestones, please refer to the [Feature roadmap](#feature-roadmap).
 * [x] Landscape orientation support (needs tweaks)
 
 ### Layouts
-* [x] Latin character layouts (QWERTY, QWERTZ, AZERTY, Swiss, Spanish,
-      Norwegian, Swedish/Finnish, Icelandic, Danish, Hungarian,
-      Croatian, Polish, Romanian); more coming in future versions
-* [x] Non-latin character layouts (Arabic, Persian, Greek, Russian
-      (JCUKEN))
+* [x] Latin character layouts (QWERTY, QWERTZ, AZERTY, Swiss, Spanish, Norwegian, Swedish/Finnish, Icelandic, Danish,
+      Hungarian, Croatian, Polish, Romanian, Colemak, Dvorak, Turkish-Q, Turkish-F, ...)
+* [x] Non-latin character layouts (Arabic, Persian, Greek, Russian (JCUKEN))
 * [x] Adapt to situation in app (password, url, text, etc. )
 * [x] Special character layout(s)
 * [x] Numeric layout
@@ -88,6 +97,7 @@ milestones, please refer to the [Feature roadmap](#feature-roadmap).
 ### Other useful features
 * [x] One-handed mode
 * [x] Clipboard/cursor tools
+* [x] Clipboard manager/history
 * [x] Integrated number row / symbols in character layouts
 * [x] Gesture support
 * [x] Full integration in IME service list of Android (xml/method)
@@ -106,7 +116,7 @@ most likely be delayed back, even though I'm eager to stick to these as
 close as possible.
 
 ### [v0.4.0](https://github.com/florisboard/florisboard/milestone/4)
-- Module A: Smartbar rework (Implemented with #91)
+- Module A: Smartbar rework (Implemented with [#91])
   - Ability to enable/disable Smartbar (features below thus only work if
     Smartbar is enabled)
   - Dynamic switching between clipboard tools and word suggestions
@@ -115,14 +125,13 @@ close as possible.
   - Complete rework of the Smartbar code base and the Smartbar layout
     definition in XML
 
-- Module B: Composing suggestions
+- Module B: Composing suggestions (Phase 1: [#329])
   - Auto-suggestion of words based of precompiled dictionaries
   - Management of custom dictionary entries
-  - Opt-in only: Learning of often typed word pais to better predict next
-    words over time. Data collected here is stored locally and never leaves
+  - Next-word suggestions by training language models. Data collected here is stored locally and never leaves
     the user's device.
 
-- Module C: Extension packs (base implementation with #162)
+- Module C: Extension packs (base implementation with [#162])
   - Ability to load dictionaries (and later potentially other cool
     features too) only if needed to keep the core APK size small
   - Currently unclear how exactly this will work, but this is definitely
@@ -132,13 +141,14 @@ close as possible.
   - Swiping over the characters will automatically convert this to a word
   - Possibly also add improvements based on the Flow keyboard
 
-- Module E: Theme rework (Implemented with #162)
+- Module E: Theme rework (Implemented with [#162])
   - Themes are now based on the Asset schema
   - Dynamic theme creation
-  - Different theme modes (`Always day`, `Always dark`, `Follow system`
+  - Different theme modes (`Always day`, `Always night`, `Follow system`
     and `Follow time`)
   - Define a separate theme both for day and night theme
   - Adapt to app theme if possible
+  - Theme import/export
 
 ### [v0.5.0](https://github.com/florisboard/florisboard/milestone/5)
 There's no exact roadmap yet but it is planned that the media part of
@@ -151,9 +161,12 @@ passes...
 
 Backlog (currently not assigned to any milestone):
 
-- Theme import/export
 - Floating keyboard
 
+[#91]: https://github.com/florisboard/florisboard/pull/91
+[#162]: https://github.com/florisboard/florisboard/pull/162
+[#329]: https://github.com/florisboard/florisboard/pull/329
+
 ## Contributing
 Wanna contribute to FlorisBoard? That's great to hear! There are lots of
 different ways to help out. Bug reporting, making pull requests,
@@ -176,11 +189,24 @@ to get more information on this topic.
   [Jared Rummler](https://github.com/jaredrummler)
 * [Timber](https://github.com/JakeWharton/timber) by
   [JakeWharton](https://github.com/JakeWharton)
-* [kotlin-result](https://github.com/michaelbull/kotlin-result) by
-  [Michael Bull](https://github.com/michaelbull)
 * [expandable-fab](https://github.com/nambicompany/expandable-fab) by
   [Nambi](https://github.com/nambicompany)
 
+## Usage notes for included binary dictionary files
+All binary dictionaries included within this project in
+(this)[app/src/main/assets/ime/dict) asset folder are built from various
+sources, as stated below.
+
+### Source 1: [wordfreq library by LuminosoInsight](https://github.com/LuminosoInsight/wordfreq):
+`wordfreq` is a repository which provides both a Python library and raw
+data (the wordlists). Only the data has been extracted in order to build
+binary dictionary files from it. `wordfreq`'s data is licensed under the
+Creative Commons Attribution-ShareAlike 4.0 license
+(https://creativecommons.org/licenses/by-sa/4.0/).
+
+For further information on what wordfreq's data depends on, see
+(https://github.com/LuminosoInsight/wordfreq#license).
+
 ## License
 ```
 Copyright 2020 Patrick Goldinger

app/.gitignore

@@ -1 +0,0 @@
-/build

app/build.gradle

@@ -1,76 +0,0 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
-
-android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.2"
-
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
-    }
-
-    defaultConfig {
-        applicationId "dev.patrickgold.florisboard"
-        minSdkVersion 23
-        targetSdkVersion 29
-        versionCode 23
-        versionName "0.3.4"
-
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildFeatures {
-        viewBinding true
-    }
-
-    buildTypes {
-        debug {
-            applicationIdSuffix ".debug"
-            resValue "string", "app_name", "FlorisBoard Debug"
-        }
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            resValue "string", "app_name", "FlorisBoard"
-        }
-    }
-
-    testOptions {
-        unitTests {
-            includeAndroidResources = true
-        }
-    }
-}
-
-dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'androidx.core:core-ktx:1.3.2'
-    implementation 'androidx.preference:preference-ktx:1.1.1'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    testImplementation 'junit:junit:4.12'
-    testImplementation 'androidx.test:core:1.3.0'
-    testImplementation 'org.mockito:mockito-core:1.10.19'
-    testImplementation 'org.mockito:mockito-inline:2.13.0'
-    testImplementation 'org.robolectric:robolectric:4.4'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
-    implementation 'com.google.android:flexbox:2.0.1'
-    implementation "com.squareup.moshi:moshi-kotlin:1.9.2"
-    implementation 'com.squareup.moshi:moshi-adapters:1.9.2'
-    implementation 'com.google.android.material:material:1.2.1'
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7"
-    implementation 'com.jaredrummler:colorpicker:1.1.0'
-    implementation 'com.jakewharton.timber:timber:4.7.1'
-    implementation "com.michael-bull.kotlin-result:kotlin-result:1.1.9"
-    implementation 'com.nambimobile.widgets:expandable-fab:1.0.2'
-}

app/build.gradle.kts

@@ -0,0 +1,102 @@
+
+plugins {
+    id("com.android.application") version "4.1.2"
+    kotlin("android") version "1.4.30"
+    kotlin("kapt") version "1.4.30"
+}
+
+android {
+    compileSdkVersion(30)
+    buildToolsVersion("30.0.3")
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        freeCompilerArgs = listOf("-Xallow-result-return-type") // enables use of kotlin.Result
+    }
+
+    defaultConfig {
+        applicationId = "dev.patrickgold.florisboard"
+        minSdkVersion(23)
+        targetSdkVersion(30)
+        versionCode(32)
+        versionName("0.3.10")
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildFeatures {
+        viewBinding = true
+    }
+
+    buildTypes {
+        named("debug").configure {
+            applicationIdSuffix = ".debug"
+            versionNameSuffix = "-debug"
+
+            resValue("mipmap", "floris_app_icon", "@mipmap/ic_app_icon_debug")
+            resValue("mipmap", "floris_app_icon_round", "@mipmap/ic_app_icon_debug_round")
+            resValue("string", "floris_app_name", "FlorisBoard Debug")
+        }
+
+        create("beta") // Needed because by default the "beta" BuildType does not exist
+        named("beta").configure {
+            applicationIdSuffix = ".beta"
+            versionNameSuffix = "-beta04"
+            proguardFiles.add(getDefaultProguardFile("proguard-android-optimize.txt"))
+
+            resValue("mipmap", "floris_app_icon", "@mipmap/ic_app_icon_beta")
+            resValue("mipmap", "floris_app_icon_round", "@mipmap/ic_app_icon_beta_round")
+            resValue("string", "floris_app_name", "FlorisBoard Beta")
+        }
+
+        named("release").configure {
+            proguardFiles.add(getDefaultProguardFile("proguard-android-optimize.txt"))
+
+            resValue("mipmap", "floris_app_icon", "@mipmap/ic_app_icon_release")
+            resValue("mipmap", "floris_app_icon_round", "@mipmap/ic_app_icon_release_round")
+            resValue("string", "floris_app_name", "@string/app_name")
+        }
+    }
+
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
+    }
+
+    lintOptions {
+        isAbortOnError = false
+    }
+}
+
+
+dependencies {
+    implementation("androidx.activity", "activity-ktx", "1.2.1")
+    implementation("androidx.appcompat", "appcompat", "1.2.0")
+    implementation("androidx.core", "core-ktx", "1.3.2")
+    implementation("androidx.fragment", "fragment-ktx", "1.3.0")
+    implementation("androidx.preference", "preference-ktx", "1.1.1")
+    implementation("androidx.constraintlayout", "constraintlayout", "2.0.4")
+    implementation("androidx.lifecycle", "lifecycle-service", "2.2.0")
+    implementation("com.google.android", "flexbox", "2.0.1") // requires jcenter as of version 2.0.1
+    implementation("com.squareup.moshi", "moshi-kotlin", "1.11.0")
+    implementation("com.squareup.moshi", "moshi-adapters", "1.11.0")
+    implementation("com.google.android.material", "material", "1.3.0")
+    implementation("org.jetbrains.kotlinx", "kotlinx-coroutines-android", "1.4.2")
+    implementation("com.jaredrummler", "colorpicker", "1.1.0")
+    implementation("com.jakewharton.timber", "timber", "4.7.1")
+    implementation("com.nambimobile.widgets", "expandable-fab", "1.0.2")
+    implementation("androidx.room", "room-runtime", "2.2.6")
+    kapt("androidx.room", "room-compiler","2.2.6")
+
+    testImplementation("junit", "junit", "4.13.1")
+    testImplementation("org.mockito", "mockito-inline", "3.7.7")
+    testImplementation("org.robolectric", "robolectric", "4.5.1")
+    androidTestImplementation("androidx.test.ext", "junit", "1.1.2")
+    androidTestImplementation("androidx.test.espresso", "espresso-core", "3.3.0")
+}

app/proguard-rules.pro

@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile

app/src/androidTest/java/dev/patrickgold/florisboard/ExampleInstrumentedTest.kt

@@ -1,13 +1,11 @@
 package dev.patrickgold.florisboard
 
-import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
 import org.junit.Test
 import org.junit.runner.RunWith
 
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *

app/src/main/AndroidManifest.xml

@@ -23,17 +23,16 @@
     <application
         android:name=".ime.core.FlorisApplication"
         android:allowBackup="false"
-        android:extractNativeLibs="false"
-        android:icon="@mipmap/ic_launcher"
-        android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
+        android:icon="@mipmap/floris_app_icon"
+        android:label="@string/floris_app_name"
+        android:roundIcon="@mipmap/floris_app_icon_round"
         android:supportsRtl="true"
         android:theme="@style/SettingsTheme">
 
         <!-- IME service -->
         <service
             android:name="dev.patrickgold.florisboard.ime.core.FlorisBoard"
-            android:label="@string/app_name"
+            android:label="@string/floris_app_name"
             android:permission="android.permission.BIND_INPUT_METHOD">
             <meta-data
                 android:name="android.view.im"
@@ -47,19 +46,19 @@
         <!-- Settings Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.settings.SettingsMainActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/settings__title"
             android:launchMode="singleTask"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/floris_app_icon_round"
             android:theme="@style/SettingsTheme"/>
 
         <!-- Using an activity alias to disable/enable the app icon in the launcher -->
         <activity-alias
             android:name="dev.patrickgold.florisboard.SettingsLauncherAlias"
-            android:icon="@mipmap/ic_launcher"
-            android:label="@string/app_name"
+            android:icon="@mipmap/floris_app_icon"
+            android:label="@string/floris_app_name"
             android:launchMode="singleTask"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/floris_app_icon_round"
             android:targetActivity="dev.patrickgold.florisboard.setup.SetupActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
@@ -70,48 +69,56 @@
         <!-- Theme Selector Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.settings.ThemeManagerActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/settings__title"
             android:theme="@style/SettingsTheme"/>
 
         <!-- Theme Editor Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.settings.ThemeEditorActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/settings__theme_editor__title"
             android:theme="@style/SettingsTheme"/>
 
         <!-- About Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.settings.AboutActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/about__title"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/floris_app_icon_round"
             android:theme="@style/SettingsTheme"/>
 
         <!-- Advanced Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.settings.AdvancedActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/settings__advanced__title"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/floris_app_icon_round"
             android:theme="@style/SettingsTheme"/>
 
         <!-- Setup Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.setup.SetupActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/setup__title"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/floris_app_icon_round"
             android:theme="@style/SettingsTheme"/>
 
         <!-- Crash Dialog Activity -->
         <activity
             android:name="dev.patrickgold.florisboard.crashutility.CrashDialogActivity"
-            android:icon="@mipmap/ic_launcher"
+            android:icon="@mipmap/floris_app_icon"
             android:label="@string/crash_dialog__title"
             android:theme="@style/CrashDialogTheme"/>
 
+        <provider
+            android:name="dev.patrickgold.florisboard.ime.clip.provider.FlorisContentProvider"
+            android:authorities="dev.patrickgold.florisboard.provider.clip"
+            android:grantUriPermissions="true"
+            android:exported="false">
+        </provider>
+
+
     </application>
 
 </manifest>

app/src/main/assets/ime/config.json

@@ -4,25 +4,33 @@
     "qwerty": "QWERTY",
     "qwertz": "QWERTZ",
     "azerty": "AZERTY",
+    "arabic": "Arabic",
     "bepo": "BÉPO",
-    "spanish": "Spanish (QWERTY)",
-    "norwegian": "Norwegian (QWERTY)",
-    "swedish_finnish": "Swedish/Finnish (QWERTY)",
+    "bulgarian_bds": "Bulgarian (BDS)",
+    "bulgarian_phonetic": "Bulgarian (Phonetic)",
+    "canadian_french": "Canadian French (QWERTY)",
+    "colemak": "Colemak",
     "danish": "Danish (QWERTY)",
+    "dvorak": "Dvorak",
+    "esperanto": "Esperanto",
+    "esperanto_with_hx": "Esperanto with 'ĥ'",
+    "greek": "Ελληνικά",
+    "hebrew": "עברית",
+    "hungarian": "Hungarian (QWERTZ)",
     "icelandic": "Icelandic (QWERTY)",
+    "kurdish": "کوردی",
+    "norwegian": "Norwegian (QWERTY)",
+    "persian": "Persian",
+    "jcuken_russian": "Russian (JCUKEN)",
+    "serbian_latin": "Serbian (QWERTZ)",
+    "serbian_cyrillic": "Serbian (ЉЊЕРТЗ)",
+    "spanish": "Spanish (QWERTY)",
+    "swedish_finnish": "Swedish/Finnish (QWERTY)",
     "swiss_german": "Swiss German (QWERTZ)",
     "swiss_french": "Swiss French (QWERTZ)",
     "swiss_italian": "Swiss Italian (QWERTZ)",
-    "hungarian": "Hungarian (QWERTZ)",
-    "persian": "Persian",
-    "arabic": "Arabic",
-    "esperanto": "Esperanto",
-    "esperanto_with_hx": "Esperanto with 'ĥ'",
-    "colemak": "Colemak",
-    "dvorak": "Dvorak",
-    "jcuken_russian": "Russian (JCUKEN)",
-    "canadian_french": "Canadian French (QWERTY)",
-    "greek": "Ελληνικά"
+    "turkish_q": "Turkish-Q",
+    "turkish_f": "Turkish-F"
   },
   "defaultSubtypes": [
     {
@@ -184,6 +192,36 @@
       "id": 1601,
       "languageTag": "pl",
       "preferredLayout": "qwerty"
+    },
+    {
+      "id": 1701,
+      "languageTag": "bg-bg",
+      "preferredLayout": "bulgarian_phonetic"
+    },
+    {
+      "id": 1801,
+      "languageTag": "tr",
+      "preferredLayout": "qwerty"
+    },
+    {
+      "id": 1901,
+      "languageTag": "iw-IL",
+      "preferredLayout": "hebrew"
+    },
+    {
+      "id": 2001,
+      "languageTag": "ckb",
+      "preferredLayout": "kurdish"
+    },
+    {
+      "id": 2101,
+      "languageTag": "sr-RS",
+      "preferredLayout": "serbian_cyrillic"
+    },
+    {
+      "id": 2201,
+      "languageTag": "lv-LV",
+      "preferredLayout": "qwerty"
     }
   ]
 }

app/src/main/assets/ime/text/characters/bepo.json

@@ -31,6 +31,8 @@
         { "code":  231, "label": "ç" }
       ],
       [
+        { "code":  234, "label": "ê" },
+        { "code":  224, "label": "à" },
         { "code":  121, "label": "y" },
         { "code":  120, "label": "x" },
         { "code":  107, "label": "k" },

app/src/main/assets/ime/text/characters/bulgarian_bds.json

@@ -0,0 +1,46 @@
+{
+  "type": "characters",
+  "name": "bulgarian_bds",
+  "authors": [ "iorvethe" ],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code": 1099, "label": "ы" },
+      { "code": 1091, "label": "у" },
+      { "code": 1077, "label": "е" },
+      { "code": 1080, "label": "и" },
+      { "code": 1096, "label": "ш" },
+      { "code": 1097, "label": "щ" },
+      { "code": 1082, "label": "к" },
+      { "code": 1089, "label": "с" },
+      { "code": 1076, "label": "д" },
+      { "code": 1079, "label": "з" },
+      { "code": 1094, "label": "ц" }
+    ],
+    [
+      { "code": 1100, "label": "ь" },
+      { "code": 1103, "label": "я" },
+      { "code": 1072, "label": "а" },
+      { "code": 1086, "label": "о" },
+      { "code": 1078, "label": "ж" },
+      { "code": 1075, "label": "г" },
+      { "code": 1090, "label": "т" },
+      { "code": 1085, "label": "н" },
+      { "code": 1074, "label": "в" },
+      { "code": 1084, "label": "м" },
+      { "code": 1095, "label": "ч" }
+    ],
+    [
+      { "code": 1102, "label": "ю" },
+      { "code": 1081, "label": "й" },
+      { "code": 1098, "label": "ъ" },
+      { "code": 1101, "label": "э" },
+      { "code": 1092, "label": "ф" },
+      { "code": 1093, "label": "х" },
+      { "code": 1087, "label": "п" },
+      { "code": 1088, "label": "р" },
+      { "code": 1083, "label": "л" },
+      { "code": 1073, "label": "б" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/bulgarian_phonetic.json

@@ -0,0 +1,44 @@
+{
+  "type": "characters",
+  "name": "bulgarian_phonetic",
+  "authors": [ "iorvethe" ],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code": 1103, "label": "я" },
+      { "code": 1074, "label": "в" },
+      { "code": 1077, "label": "е" },
+      { "code": 1088, "label": "р" },
+      { "code": 1090, "label": "т" },
+      { "code": 1098, "label": "ъ" },
+      { "code": 1091, "label": "у" },
+      { "code": 1080, "label": "и" },
+      { "code": 1086, "label": "о" },
+      { "code": 1087, "label": "п" },
+      { "code": 1095, "label": "ч" }
+    ],
+    [
+      { "code": 1072, "label": "а" },
+      { "code": 1089, "label": "с" },
+      { "code": 1076, "label": "д" },
+      { "code": 1092, "label": "ф" },
+      { "code": 1075, "label": "г" },
+      { "code": 1093, "label": "х" },
+      { "code": 1081, "label": "й" },
+      { "code": 1082, "label": "к" },
+      { "code": 1083, "label": "л" },
+      { "code": 1096, "label": "ш" },
+      { "code": 1097, "label": "щ" }
+    ],
+    [
+      { "code": 1079, "label": "з" },
+      { "code": 1100, "label": "ь" },
+      { "code": 1094, "label": "ц" },
+      { "code": 1078, "label": "ж" },
+      { "code": 1073, "label": "б" },
+      { "code": 1085, "label": "н" },
+      { "code": 1084, "label": "м" },
+      { "code": 1102, "label": "ю" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/colemak.json

@@ -18,7 +18,7 @@
         "relevant": [
           { "code":   58, "label": ":" }
         ]
-      } }
+      }, "shift": { "code":   58, "label": ":" } }
     ],
     [
       { "code":   97, "label": "a" },

app/src/main/assets/ime/text/characters/dvorak.json

@@ -12,25 +12,25 @@
           { "code":   33, "label": "!" },
           { "code":   34, "label": "\"" }
         ]
-      } },
+      }, "shift": { "code":   34, "label": "\"" } },
       { "code":   39, "label": "'", "groupId": 101, "variation": "password", "popup": {
         "relevant": [
           { "code":   33, "label": "!" },
           { "code":   34, "label": "\"" }
         ]
-      } },
+      }, "shift": { "code":   34, "label": "\"" } },
       { "code":   47, "label": "/", "groupId": 101, "variation": "uri" },
       { "code":   44, "label": ",", "popup": {
         "relevant": [
           { "code":   60, "label": "<" },
           { "code":   63, "label": "?" }
         ]
-      } },
+      }, "shift": { "code":   60, "label": "<" } },
       { "code":   46, "label": ".", "popup": {
         "relevant": [
           { "code":   62, "label": ">" }
         ]
-      } },
+      }, "shift": { "code":   62, "label": ">" } },
       { "code":  112, "label": "p" },
       { "code":  121, "label": "y" },
       { "code":  102, "label": "f" },

app/src/main/assets/ime/text/characters/extended_popups/$default.json

@@ -5,18 +5,20 @@
   "mapping": {
     "all": {
       "~enter": {
-        "main": { "code": -215, "label": "toggle_one_handed_mode", "type": "system_gui" },
+        "main": { "code": -213, "label": "switch_to_media_context", "type": "system_gui" },
         "relevant": [
-          { "code": -213, "label": "switch_to_media_context", "type": "system_gui" }
+          { "code": -216, "label": "toggle_one_handed_mode_right", "type": "system_gui" },
+          { "code": -214, "label": "switch_to_clipboard_context", "type": "system_gui"}
         ]
       },
       "~left": {
         "main": { "code": -213, "label": "switch_to_media_context", "type": "system_gui" },
         "relevant": [
-          { "code": -215, "label": "toggle_one_handed_mode", "type": "system_gui" },
+          { "code": -215, "label": "toggle_one_handed_mode_left", "type": "system_gui" },
           { "code": -100, "label": "settings", "type": "system_gui" }
         ]
       }
     }
   }
 }
+

app/src/main/assets/ime/text/characters/extended_popups/bg.json

@@ -0,0 +1,45 @@
+{
+  "type": "characters/extended_popups",
+  "name": "bg",
+  "authors": [ "iorvethe" ],
+  "mapping": {
+    "all": {
+      "и": {
+        "relevant": [
+          { "code": 1117, "label": "ѝ" }
+        ]
+      },
+      "~right": {
+        "main": { "code":   44, "label": "," },
+        "relevant": [
+          { "code":   38, "label": "&" },
+          { "code":   37, "label": "%" },
+          { "code":   43, "label": "+" },
+          { "code":   34, "label": "\"" },
+          { "code":   45, "label": "-" },
+          { "code":   58, "label": ":" },
+          { "code":   39, "label": "'" },
+          { "code":   64, "label": "@" },
+          { "code":   59, "label": ";" },
+          { "code":   47, "label": "/" },
+          { "code":   40, "label": "(" },
+          { "code":   41, "label": ")" },
+          { "code":   35, "label": "#" },
+          { "code":   33, "label": "!" },
+          { "code":   63, "label": "?" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".com" },
+        "relevant": [
+          { "code": -255, "label": ".bg" },
+          { "code": -255, "label": ".edu" },
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".net" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/extended_popups/ckb.json

@@ -0,0 +1,167 @@
+{
+  "type": "characters/extended_popups",
+  "name": "ckb",
+  "authors": [ "GoRaN" ],
+  "mapping": {
+    "all": {
+      "ق": {
+        "relevant": [
+          { "code": 1647, "label": "ٯ" }
+        ]
+      },
+      "ئ": {
+        "relevant": [
+          {"code": 1569, "label": "ء" }
+        ]
+      },
+      "ە": {
+        "relevant": [
+          { "code": 1577, "label": "ة" },
+          { "code": 1729, "label": "ـہ" }
+        ]
+      },
+      "ر": {
+        "relevant": [
+          { "code": 1685, "label": "ڕ" },
+          { "code": 1682, "label": "ڒ" }
+        ]
+      },
+      "ف": {
+        "relevant": [
+          { "code": 1701, "label": "ڥ" },
+          { "code": 1698, "label": "ڢ" },
+          { "code": 1700, "label": "ڤ" },
+          { "code": 1697, "label": "ڡ" }
+        ]
+      },
+      "": {
+        "relevant": [
+          { "code": 65163, "label": "ﺋ" },
+          { "code": 1569, "label": "ء" },
+          { "code": 65139, "label": "ﹳ" }
+        ]
+      },
+      "ع": {
+        "relevant": [
+          { "code": 1551, "label": "؏" },
+          { "code": 1594, "label": "غ" }
+        ]
+      },
+      "د": {
+        "relevant": [
+          { "code": 1676, "label": "ڌ" },
+          { "code": 64390, "label": "ﮆ" },
+          { "code": 1584, "label": "ذ" },
+          { "code": 1774, "label": "ۮ" }
+        ]
+      },
+      "ه": {
+        "relevant": [
+          { "code": 1726, "label": "ھ" }
+        ]
+      },
+      "خ": {
+        "relevant": [
+          { "code": 1567, "label": "؟" }
+        ]
+      },
+      "س": {
+        "relevant": [
+          { "code": 1589, "label": "ص" }
+        ]
+      },
+      "ش": {
+        "relevant": [
+          { "code": 1590, "label": "ض" }
+        ]
+      },
+      "ب": {
+        "relevant": [
+          { "code": 65010, "label": "ﷲ" },
+          { "code": 65021, "label": "﷽" },
+          { "code": 65019, "label": "ﷻ" }
+        ]
+      },
+      "م": {
+        "relevant": [
+          { "code": 65018, "label": "ﷺ" },
+          { "code": 65012, "label": "ﷴ" }
+        ]
+      },
+      "ل": {
+        "relevant": [
+          { "code": 1718, "label": "ڶ" },
+          { "code": 1719, "label": "ڷ" },
+          { "code": 1717, "label": "ڵ" },
+          { "code": 1720, "label": "ڸ" }
+        ]
+      },
+      "ا": {
+        "relevant": [
+          { "code": 1571, "label": "أ" },
+          { "code": 1573, "label": "إ" },
+          { "code": 1570, "label": "آ" },
+          { "code": 1649, "label": "ٱ" }
+        ]
+      },
+      "ک": {
+        "relevant": [
+          { "code": 1706, "label": "ڪ" },
+          { "code": 1603, "label": "ك"}
+        ]
+      },
+      "ی": {
+        "relevant": [
+          { "code": 1746, "label": "ے" },
+          { "code": 1610, "label": "ي" },
+          { "code": 1744, "label": "ې" },
+          { "code": 1741, "label": "ۍ" },
+          { "code": 1742, "label": "ێ" },
+          { "code": 1597, "label": "ؽ" }
+        ]
+      },
+      "ۆ": {
+        "relevant": [
+          { "code": 1743, "label": "ۏ" },
+          { "code": 1735, "label": "ۇ" },
+          { "code": 1737, "label": "ۉ" },
+          { "code": 1738, "label": "ۊ" },
+          { "code": 1572, "label": "ؤ" },
+          { "code": 1739, "label": "ۋ" }
+        ]
+      },
+      "~right": {
+        "main": { "code": 1567, "label": "؟" },
+        "relevant": [
+          { "code": 1600, "label": "ــ" },
+          { "code": 33, "label": "!" },
+          { "code": 1548, "label": "،" },
+          { "code": 44, "label": "," },
+          { "code": 1549, "label": "؍" },
+          { "code": 1563, "label": "؛" },
+          { "code": 59, "label": ";" },
+          { "code": 58, "label": ":" },
+          { "code": 64, "label": "@" },
+          { "code": 35, "label": "#" },
+          { "code": 42, "label": "*" },
+          { "code": 95, "label": "_" },
+          { "code": 45, "label": "-" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".krd"},
+        "relevant": [
+          { "code": -255, "label": ".gov" },
+          { "code": -255, "label": ".edu" },
+          { "code": -255, "label": ".com" },
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".net" },
+          { "code": -255, "label": ".iq" },
+          { "code": -255, "label": ".tv" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/extended_popups/es.json

@@ -26,23 +26,23 @@
         ]
       },
       "e": {
+        "main": { "code":  233, "label": "é" },
         "relevant": [
           { "code":  275, "label": "ē" },
           { "code":  281, "label": "ę" },
           { "code":  279, "label": "ė" },
           { "code":  235, "label": "ë" },
-          { "code":  233, "label": "é" },
           { "code":  232, "label": "è" },
           { "code":  234, "label": "ê" }
         ]
       },
       "i": {
+        "main": { "code":  237, "label": "í" },
         "relevant": [
           { "code":  299, "label": "ī" },
           { "code":  238, "label": "î" },
           { "code":  303, "label": "į" },
           { "code":  236, "label": "ì" },
-          { "code":  237, "label": "í" },
           { "code":  239, "label": "ï" }
         ]
       },
@@ -71,8 +71,8 @@
         ]
       },
       "u": {
+        "main": { "code":  250, "label": "ú" },
         "relevant": [
-          { "code":  250, "label": "ú" },
           { "code":  363, "label": "ū" },
           { "code":  249, "label": "ù" },
           { "code":  252, "label": "ü" },
@@ -104,9 +104,9 @@
       "~right": {
         "main": { "code": -255, "label": ".com" },
         "relevant": [
+          { "code": -255, "label": ".org" },
           { "code": -255, "label": ".com.es" },
           { "code": -255, "label": ".es" },
-          { "code": -255, "label": ".org" },
           { "code": -255, "label": ".net" }
         ]
       }

app/src/main/assets/ime/text/characters/extended_popups/it.json

@@ -5,8 +5,8 @@
   "mapping": {
     "all": {
       "a": {
+        "main": { "code":  224, "label": "à" },
         "relevant": [
-          { "code":  224, "label": "à" },
           { "code":  227, "label": "ã" },
           { "code":  229, "label": "å" },
           { "code":  257, "label": "ā" },
@@ -18,8 +18,8 @@
         ]
       },
       "e": {
+        "main": { "code":  232, "label": "è" },
         "relevant": [
-          { "code":  232, "label": "è" },
           { "code":  275, "label": "ē" },
           { "code":  281, "label": "ę" },
           { "code":  279, "label": "ė" },
@@ -29,8 +29,8 @@
         ]
       },
       "i": {
+        "main": { "code":  236, "label": "ì" },
         "relevant": [
-          { "code":  236, "label": "ì" },
           { "code":  299, "label": "ī" },
           { "code":  239, "label": "ï" },
           { "code":  303, "label": "į" },
@@ -45,8 +45,8 @@
         ]
       },
       "o": {
+        "main": { "code":  242, "label": "ò" },
         "relevant": [
-          { "code":  242, "label": "ò" },
           { "code":  186, "label": "º" },
           { "code":  333, "label": "ō" },
           { "code":  339, "label": "œ" },
@@ -58,8 +58,8 @@
         ]
       },
       "u": {
+        "main": { "code":  249, "label": "ù" },
         "relevant": [
-          { "code":  249, "label": "ù" },
           { "code":  363, "label": "ū" },
           { "code":  251, "label": "û" },
           { "code":  250, "label": "ú" },
@@ -91,10 +91,10 @@
       "~right": {
         "main": { "code": -255, "label": ".com" },
         "relevant": [
-          { "code": -255, "label": ".gov" },
-          { "code": -255, "label": ".edu" },
-          { "code": -255, "label": ".it" },
+          { "code": -255, "label": ".gov.it" },
+          { "code": -255, "label": ".edu.it" },
           { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".it" },
           { "code": -255, "label": ".net" }
         ]
       }

app/src/main/assets/ime/text/characters/extended_popups/iw.json

@@ -0,0 +1,42 @@
+{
+  "type": "characters/extended_popups",
+  "name": "iw",
+  "authors": [ "Antony" ],
+  "mapping": {
+    "all": {
+      "~right": {
+        "main": { "code":   44, "label": "," },
+        "relevant": [
+          { "code":   38, "label": "&" },
+          { "code":   37, "label": "%" },
+          { "code":   43, "label": "+" },
+          { "code":   34, "label": "\"" },
+          { "code":   45, "label": "-" },
+          { "code":   58, "label": ":" },
+          { "code":   39, "label": "'" },
+          { "code":   64, "label": "@" },
+          { "code":   59, "label": ";" },
+          { "code":   47, "label": "/" },
+          { "code":   40, "label": "(" },
+          { "code":   41, "label": ")" },
+          { "code":   35, "label": "#" },
+          { "code":   33, "label": "!" },
+          { "code":   63, "label": "?" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".com" },
+        "relevant": [
+          { "code": -255, "label": ".gov" },
+          { "code": -255, "label": ".edu" },
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".net" },
+          { "code": -255, "label": ".co.il" },
+          { "code": -255, "label": ".gov.il" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/extended_popups/lv.json

@@ -0,0 +1,112 @@
+{
+  "type": "characters/extended_popups",
+  "name": "lv",
+  "authors": [ "patrickgold", "eandersons" ],
+  "mapping": {
+    "all": {
+      "a": {
+        "relevant": [
+          { "code":  257, "label": "ā" }
+        ]
+      },
+      "c": {
+        "relevant": [
+          { "code":  269, "label": "č" }
+        ]
+      },
+      "e": {
+        "relevant": [
+          { "code":  275, "label": "ē" },
+          { "code":  8364, "label": "€" }
+        ]
+      },
+      "g": {
+        "relevant": [
+          { "code":  291, "label": "ģ" }
+        ]
+      },
+      "i": {
+        "relevant": [
+          { "code":  299, "label": "ī" }
+        ]
+      },
+      "k": {
+        "relevant": [
+          { "code":  311, "label": "ķ" }
+        ]
+      },
+      "l": {
+        "relevant": [
+          { "code":  316, "label": "ļ" }
+        ]
+      },
+      "n": {
+        "relevant": [
+          { "code":  326, "label": "ņ" }
+        ]
+      },
+      "o": {
+        "relevant": [
+          { "code":  333, "label": "ō" }
+        ]
+      },
+      "r": {
+        "relevant": [
+          { "code":  343, "label": "ŗ" }
+        ]
+      },
+      "s": {
+        "relevant": [
+          { "code":  353, "label": "š" }
+        ]
+      },
+      "u": {
+        "relevant": [
+          { "code":  363, "label": "ū" }
+        ]
+      },
+      "z": {
+        "relevant": [
+          { "code":  382, "label": "ž" }
+        ]
+      },
+      "~right": {
+        "main": { "code":   44, "label": "," },
+        "relevant": [
+          { "code":   38, "label": "&" },
+          { "code":   37, "label": "%" },
+          { "code":   43, "label": "+" },
+          { "code":   34, "label": "\"" },
+          { "code":   45, "label": "-" },
+          { "code":   8212, "label": "—" },
+          { "code":   58, "label": ":" },
+          { "code":   39, "label": "'" },
+          { "code":   64, "label": "@" },
+          { "code":   59, "label": ";" },
+          { "code":   47, "label": "/" },
+          { "code":   40, "label": "(" },
+          { "code":   41, "label": ")" },
+          { "code":   35, "label": "#" },
+          { "code":   33, "label": "!" },
+          { "code":   63, "label": "?" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".lv" },
+        "relevant": [
+          { "code": -255, "label": ".eu" },
+          { "code": -255, "label": ".com" },
+          { "code": -255, "label": ".gov.lv" },
+          { "code": -255, "label": ".edu.lv" },
+          { "code": -255, "label": ".org.lv" },
+          { "code": -255, "label": ".gov" },
+          { "code": -255, "label": ".edu" },
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".net" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/extended_popups/sr.json

@@ -0,0 +1,59 @@
+{
+  "type": "characters/extended_popups",
+  "name": "sr",
+  "authors": [ "hedidnothingwrong", "GrbavaCigla" ],
+  "mapping": {
+    "all": {
+      "c": {
+        "relevant": [
+          { "code":  269, "label": "č" },
+          { "code":  263, "label": "ć" }
+        ]
+      },
+      "d": {
+        "relevant": [
+          { "code":  273, "label": "đ" }
+        ]
+      },
+      "s": {
+        "relevant": [
+          { "code":  353, "label": "š" }
+        ]
+      },
+      "z": {
+        "main": { "code":  382, "label": "ž" }
+      },
+      "~right": {
+        "main": { "code":   44, "label": "," },
+        "relevant": [
+          { "code":   38, "label": "&" },
+          { "code":   37, "label": "%" },
+          { "code":   43, "label": "+" },
+          { "code":   34, "label": "\"" },
+          { "code":   45, "label": "-" },
+          { "code":   58, "label": ":" },
+          { "code":   39, "label": "'" },
+          { "code":   64, "label": "@" },
+          { "code":   59, "label": ";" },
+          { "code":   47, "label": "/" },
+          { "code":   40, "label": "(" },
+          { "code":   41, "label": ")" },
+          { "code":   35, "label": "#" },
+          { "code":   33, "label": "!" },
+          { "code":   63, "label": "?" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".com" },
+        "relevant": [
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".eu" },
+          { "code": -255, "label": ".rs" },
+          { "code": -255, "label": ".net" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/extended_popups/tr.json

@@ -0,0 +1,132 @@
+{
+  "type": "characters/extended_popups",
+  "name": "tr",
+  "authors": [ "kisekinopureya", "patrickgold" ],
+  "mapping": {
+    "all": {
+      "a": {
+        "relevant": [
+          { "code":  226, "label": "â" },
+          { "code":  228, "label": "ä" },
+          { "code":  225, "label": "á" }
+        ]
+      },
+      "c": {
+        "main": { "code":  231, "label": "ç" },
+        "relevant": [
+          { "code":  269, "label": "č" },
+          { "code":  263, "label": "ć" }
+        ]
+      },
+      "e": {
+        "relevant": [
+          { "code":  233, "label": "é" },
+          { "code":  601, "label": "ə" },
+          { "code":  234, "label": "ê" }
+        ]
+      },
+      "g": {
+        "main": { "code":  287, "label": "ğ" }
+      },
+      "i": {
+        "main": { "code":  305, "label": "ı" },
+        "relevant": [
+          { "code":  303, "label": "į" },
+          { "code":  236, "label": "ì" },
+          { "code":  237, "label": "í" },
+          { "code":  299, "label": "ī" },
+          { "code":  238, "label": "î" },
+          { "code":  239, "label": "ï" }
+        ]
+      },
+      "ı": {
+        "main": { "code":  105, "label": "i" },
+        "relevant": [
+          { "code":  303, "label": "į" },
+          { "code":  236, "label": "ì" },
+          { "code":  237, "label": "í" },
+          { "code":  299, "label": "ī" },
+          { "code":  238, "label": "î" },
+          { "code":  239, "label": "ï" }
+        ]
+      },
+      "n": {
+        "relevant": [
+          { "code":  328, "label": "ň" },
+          { "code":  241, "label": "ñ" }
+        ]
+      },
+      "o": {
+        "main": { "code":  246, "label": "ö" },
+        "relevant": [
+          { "code":  333, "label": "ō" },
+          { "code":  248, "label": "ø" },
+          { "code":  243, "label": "ó" },
+          { "code":  245, "label": "õ" },
+          { "code":  242, "label": "ò" },
+          { "code":  339, "label": "œ" },
+          { "code":  244, "label": "ô" }
+        ]
+      },
+      "s": {
+        "main": { "code":  351, "label": "ş" },
+        "relevant": [
+          { "code":  347, "label": "ś" },
+          { "code":  223, "label": "ß" },
+          { "code":  353, "label": "š" }
+        ]
+      },
+      "u": {
+        "main": { "code":  252, "label": "ü" },
+        "relevant": [
+          { "code":  363, "label": "ū" },
+          { "code":  249, "label": "ù" },
+          { "code":  250, "label": "ú" },
+          { "code":  251, "label": "û" }
+        ]
+      },
+      "y": {
+        "relevant": [
+          { "code":  253, "label": "ý" }
+        ]
+      },
+      "z": {
+        "relevant": [
+          { "code":  382, "label": "ž" }
+        ]
+      },
+      "~right": {
+        "main": { "code":   44, "label": "," },
+        "relevant": [
+          { "code":   38, "label": "&" },
+          { "code":   37, "label": "%" },
+          { "code":   43, "label": "+" },
+          { "code":   34, "label": "\"" },
+          { "code":   45, "label": "-" },
+          { "code":   58, "label": ":" },
+          { "code":   39, "label": "'" },
+          { "code":   64, "label": "@" },
+          { "code":   59, "label": ";" },
+          { "code":   47, "label": "/" },
+          { "code":   40, "label": "(" },
+          { "code":   41, "label": ")" },
+          { "code":   35, "label": "#" },
+          { "code":   33, "label": "!" },
+          { "code":   63, "label": "?" }
+        ]
+      }
+    },
+    "uri": {
+      "~right": {
+        "main": { "code": -255, "label": ".com" },
+        "relevant": [
+          { "code": -255, "label": ".gov" },
+          { "code": -255, "label": ".org" },
+          { "code": -255, "label": ".edu" },
+          { "code": -255, "label": ".tr" },
+          { "code": -255, "label": ".net" }
+        ]
+      }
+    }
+  }
+}

app/src/main/assets/ime/text/characters/hebrew.json

@@ -0,0 +1,53 @@
+{
+  "type": "characters",
+  "name": "hebrew",
+  "authors": [ "Antony" ],
+  "direction": "rtl",
+  "modifier": "hebrew",
+  "arrangement": [
+    [
+      { "code":   39, "label": "'", "popup": {
+        "relevant": [
+          { "code":   34, "label": "\"" },
+          { "code":   96, "label": "`" }
+        ]
+      } },
+      { "code":   45, "label": "-", "popup": {
+        "relevant": [
+          { "code":   95, "label": "_" }
+        ]
+      } },
+      { "code":  1511, "label": "ק" },
+      { "code":  1512, "label": "ר" },
+      { "code":  1488, "label": "א" },
+      { "code":  1496, "label": "ט" },
+      { "code":  1493, "label": "ו" },
+      { "code":  1503, "label": "ן" },
+      { "code":  1501, "label": "ם" },
+      { "code":  1508, "label": "פ" }
+    ],
+    [
+      { "code":  1513, "label": "ף" },
+      { "code":  1491, "label": "ך" },
+      { "code":  1490, "label": "ל" },
+      { "code":  1499, "label": "ח" },
+      { "code":  1506, "label": "י" },
+      { "code":  1497, "label": "ע" },
+      { "code":  1495, "label": "כ" },
+      { "code":  1500, "label": "ג" },
+      { "code":  1498, "label": "ד" },
+      { "code":  1507, "label": "ש" }
+    ],
+    [
+      { "code":  1494, "label": "ץ" },
+      { "code":  1505, "label": "ת" },
+      { "code":  1489, "label": "צ" },
+      { "code":  1492, "label": "מ" },
+      { "code":  1504, "label": "נ" },
+      { "code":  1502, "label": "ה" },
+      { "code":  1510, "label": "ב" },
+      { "code":  1514, "label": "ס" },
+      { "code":  1509, "label": "ז" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/kurdish.json

@@ -0,0 +1,57 @@
+{
+  "type": "characters",
+  "name": "kurdish",
+  "authors": [ "GoRaN" ],
+  "direction": "rtl",
+  "modifier": "kurdish",
+  "arrangement": [
+    [
+      { "code":  1602, "label": "ق", "popup": {
+        "main": { "code": 1647, "label": "ٯ" }
+      } },
+      { "code":  1608, "label": "و", "popup": {
+        "main": { "code": -255, "label": "وو" }
+      } },
+      { "code":  1749, "label": "ﻪ", "popup": {
+        "main": { "code": 1577, "label": "ة" }
+      } },
+      { "code":  1585, "label": "ر" },
+      { "code":  1578, "label": "ت", "popup": {
+        "main": { "code": 1591, "label": "ط" }
+      } },
+      { "code":  1740, "label": "ی" },
+      { "code":  1574, "label": "ﺋ", "popup": {
+        "main": { "code": 1569, "label": "ء" }
+      } },
+      { "code":  1593, "label": "ع" },
+      { "code":  1734, "label": "ۆ" },
+      { "code":  1662, "label": "پ", "popup": {
+        "main": { "code": 1579, "label": "ث" }
+      } }
+    ],
+    [
+      { "code":  1575, "label": "ا" },
+      { "code":  1587, "label": "س" },
+      { "code":  1588, "label": "ش" },
+      { "code":  1583, "label": "د" },
+      { "code":  1601, "label": "ف" },
+      { "code":  1607, "label": "ھ" },
+      { "code":  1688, "label": "ژ" },
+      { "code":  1604, "label": "ل" },
+      { "code":  1705, "label": "ک" },
+      { "code":  1711, "label": "گ" }
+    ],
+    [
+      { "code":  1586, "label": "ز", "popup": {
+        "main": {"code": 1592, "label": "ظ" }
+      } },
+      { "code":  1582, "label": "خ" },
+      { "code":  1580, "label": "ج" },
+      { "code":  1670, "label": "چ" },
+      { "code":  1581, "label": "ح" },
+      { "code":  1576, "label": "ب" },
+      { "code":  1606, "label": "ن" },
+      { "code":  1605, "label": "م" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/mod/hebrew.json

@@ -0,0 +1,27 @@
+{
+  "type": "characters/mod",
+  "name": "hebrew",
+  "authors": [ "Antony" ],
+  "direction": "rtl",
+  "arrangement": [
+    [
+      { "code":    0, "type": "placeholder" },
+      { "code":   -5, "label": "delete", "type": "enter_editing" }
+    ],
+    [
+      { "code": -202, "label": "view_symbols", "type": "system_gui" },
+      { "code":   64, "label": "@", "groupId": 1, "variation": "email_address" },
+      { "code":   44, "label": ",", "groupId": 1, "variation": "normal" },
+      { "code":   44, "label": ",", "groupId": 1, "variation": "password" },
+      { "code":   47, "label": "/", "groupId": 1, "variation": "uri" },
+      { "code": -210, "label": "language_switch", "type": "system_gui" },
+      { "code": -213, "label": "switch_to_media_context", "type": "system_gui" },
+      { "code":   32, "label": "space" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "email_address" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "normal" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "password" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "uri" },
+      { "code":   10, "label": "enter", "groupId": 3, "type": "enter_editing" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/mod/kurdish.json

@@ -0,0 +1,27 @@
+{
+  "type": "characters/mod",
+  "name": "kurdish",
+  "authors": [ "GoRaN" ],
+  "direction": "rtl",
+  "arrangement": [
+    [
+      { "code":    0, "type": "placeholder" },
+      { "code":   -5, "label": "delete", "type": "enter_editing" }
+    ],
+    [
+      { "code": -202, "label": "view_symbols", "type": "system_gui" },
+      { "code":   64, "label": "@", "groupId": 1, "variation": "email_address" },
+      { "code": 1567, "label": "؟", "groupId": 1, "variation": "normal" },
+      { "code": 1548, "label": "،", "groupId": 1, "variation": "password" },
+      { "code":   47, "label": "/", "groupId": 1, "variation": "uri" },
+      { "code": -210, "label": "language_switch", "type": "system_gui" },
+      { "code": -213, "label": "switch_to_media_context", "type": "system_gui" },
+      { "code":   32, "label": " " },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "email_address" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "normal" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "password" },
+      { "code":   46, "label": ".", "groupId": 2, "variation": "uri" },
+      { "code":   10, "label": "enter", "groupId": 3, "type": "enter_editing" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/serbian_cyrillic.json

@@ -0,0 +1,44 @@
+{
+  "type": "characters",
+  "name": "serbian_cyrillic",
+  "authors": ["GrbavaCigla"],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code": 1113, "label": "љ" },
+      { "code": 1114, "label": "њ" },
+      { "code": 1077, "label": "е" },
+      { "code": 1088, "label": "р" },
+      { "code": 1090, "label": "т" },
+      { "code": 1079, "label": "з" },
+      { "code": 1091, "label": "у" },
+      { "code": 1080, "label": "и" },
+      { "code": 1086, "label": "о" },
+      { "code": 1087, "label": "п" },
+      { "code": 1096, "label": "ш" }
+    ],
+    [
+      { "code": 1072, "label": "а" },
+      { "code": 1089, "label": "с" },
+      { "code": 1076, "label": "д" },
+      { "code": 1092, "label": "ф" },
+      { "code": 1075, "label": "г" },
+      { "code": 1093, "label": "х" },
+      { "code": 1112, "label": "ј" },
+      { "code": 1082, "label": "к" },
+      { "code": 1083, "label": "л" },
+      { "code": 1095, "label": "ч" },
+      { "code": 1115, "label": "ћ" }
+    ],
+    [
+      { "code": 1119, "label": "џ" },
+      { "code": 1094, "label": "ц" },
+      { "code": 1074, "label": "в" },
+      { "code": 1073, "label": "б" },
+      { "code": 1085, "label": "н" },
+      { "code": 1084, "label": "м" },
+      { "code": 1106, "label": "ђ" },
+      { "code": 1078, "label": "ж" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/serbian_latin.json

@@ -0,0 +1,45 @@
+{
+  "type": "characters",
+  "name": "serbian_latin",
+  "authors": ["GrbavaCigla"],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code": 113, "label": "q" },
+      { "code": 119, "label": "w" },
+      { "code": 101, "label": "e" },
+      { "code": 114, "label": "r" },
+      { "code": 116, "label": "t" },
+      { "code": 122, "label": "z" },
+      { "code": 117, "label": "u" },
+      { "code": 105, "label": "i" },
+      { "code": 111, "label": "o" },
+      { "code": 112, "label": "p" },
+      { "code": 353, "label": "š" }
+    ],
+    [
+      { "code":  97, "label": "a" },
+      { "code": 115, "label": "s" },
+      { "code": 100, "label": "d" },
+      { "code": 102, "label": "f" },
+      { "code": 103, "label": "g" },
+      { "code": 104, "label": "h" },
+      { "code": 106, "label": "j" },
+      { "code": 107, "label": "k" },
+      { "code": 108, "label": "l" },
+      { "code": 269, "label": "č" },
+      { "code": 263, "label": "ć" }
+    ],
+    [
+      { "code": 121, "label": "y" },
+      { "code": 120, "label": "x" },
+      { "code":  99, "label": "c" },
+      { "code": 118, "label": "v" },
+      { "code":  98, "label": "b" },
+      { "code": 110, "label": "n" },
+      { "code": 109, "label": "m" },
+      { "code": 273, "label": "đ" },
+      { "code": 382, "label": "ž" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/turkish_f.json

@@ -0,0 +1,46 @@
+{
+  "type": "characters",
+  "name": "turkish_f",
+  "authors": [ "patrickgold" ],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code":  102, "label": "f" },
+      { "code":  103, "label": "g" },
+      { "code":  287, "label": "ğ" },
+      { "code":  305, "label": "ı" },
+      { "code":  111, "label": "o" },
+      { "code":  100, "label": "d" },
+      { "code":  114, "label": "r" },
+      { "code":  110, "label": "n" },
+      { "code":  104, "label": "h" },
+      { "code":  112, "label": "p" },
+      { "code":  113, "label": "q" },
+      { "code":  119, "label": "w" }
+    ],
+    [
+      { "code":  117, "label": "u" },
+      { "code":  105, "label": "i" },
+      { "code":  101, "label": "e" },
+      { "code":   97, "label": "a" },
+      { "code":  252, "label": "ü" },
+      { "code":  116, "label": "t" },
+      { "code":  107, "label": "k" },
+      { "code":  109, "label": "m" },
+      { "code":  108, "label": "l" },
+      { "code":  121, "label": "y" },
+      { "code":  351, "label": "ş" }
+    ],
+    [
+      { "code":  106, "label": "j" },
+      { "code":  246, "label": "ö" },
+      { "code":  118, "label": "v" },
+      { "code":   99, "label": "c" },
+      { "code":  231, "label": "ç" },
+      { "code":  122, "label": "z" },
+      { "code":  115, "label": "s" },
+      { "code":   98, "label": "b" },
+      { "code":  120, "label": "x" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/characters/turkish_q.json

@@ -0,0 +1,46 @@
+{
+  "type": "characters",
+  "name": "turkish_q",
+  "authors": [ "patrickgold" ],
+  "direction": "ltr",
+  "arrangement": [
+    [
+      { "code":  113, "label": "q" },
+      { "code":  119, "label": "w" },
+      { "code":  101, "label": "e" },
+      { "code":  114, "label": "r" },
+      { "code":  116, "label": "t" },
+      { "code":  121, "label": "y" },
+      { "code":  117, "label": "u" },
+      { "code":  305, "label": "ı" },
+      { "code":  111, "label": "o" },
+      { "code":  112, "label": "p" },
+      { "code":  287, "label": "ğ" },
+      { "code":  252, "label": "ü" }
+    ],
+    [
+      { "code":   97, "label": "a" },
+      { "code":  115, "label": "s" },
+      { "code":  100, "label": "d" },
+      { "code":  102, "label": "f" },
+      { "code":  103, "label": "g" },
+      { "code":  104, "label": "h" },
+      { "code":  106, "label": "j" },
+      { "code":  107, "label": "k" },
+      { "code":  108, "label": "l" },
+      { "code":  351, "label": "ş" },
+      { "code":  105, "label": "i" }
+    ],
+    [
+      { "code":  122, "label": "z" },
+      { "code":  120, "label": "x" },
+      { "code":   99, "label": "c" },
+      { "code":  118, "label": "v" },
+      { "code":   98, "label": "b" },
+      { "code":  110, "label": "n" },
+      { "code":  109, "label": "m" },
+      { "code":  246, "label": "ö" },
+      { "code":  231, "label": "ç" }
+    ]
+  ]
+}

app/src/main/assets/ime/text/extension/clipboard_cursor_row.json

@@ -10,7 +10,8 @@
       { "code":  -20, "label": "arrow_left", "type": "navigation" },
       { "code":  -21, "label": "arrow_right", "type": "navigation" },
       { "code": -131, "label": "clipboard_cut", "type": "enter_editing" },
-      { "code": -132, "label": "clipboard_paste", "type": "enter_editing" }
+      { "code": -132, "label": "clipboard_paste", "type": "enter_editing" },
+      { "code": -214, "label": "switch_to_clipboard_context", "type":  "system_gui"}
     ]
   ]
 }

app/src/main/assets/ime/text/numeric/advanced/default.json

@@ -48,7 +48,7 @@
       { "code":   48, "label": "0", "type": "numeric" },
       { "code":   61, "label": "=" },
       { "code":   46, "label": "." },
-      { "code":   10, "label": "enter", "type": "enter_editing" }
+      { "code":   10, "label": "enter", "groupId": 3, "type": "enter_editing" }
     ]
   ]
 }

app/src/main/assets/ime/text/symbols2/mod/default.json

@@ -11,10 +11,24 @@
     ],
     [
       { "code": -201, "label": "view_characters", "type": "system_gui" },
-      { "code":   60, "label": "<" },
+      { "code":   60, "label": "<", "popup": {
+        "relevant": [
+          { "code":  171, "label": "«" },
+          { "code": 8804, "label": "≤" },
+          { "code": 8249, "label": "‹" },
+          { "code":10216, "label": "⟨" }
+        ]
+      } },
       { "code": -205, "label": "view_numeric_advanced", "type": "system_gui" },
       { "code":   32, "label": "space" },
-      { "code":   62, "label": ">" },
+      { "code":   62, "label": ">", "popup": {
+        "relevant": [
+          { "code":10217, "label": "⟩" },
+          { "code": 8250, "label": "›" },
+          { "code": 8805, "label": "≥" },
+          { "code":  187, "label": "»" }
+        ]
+      } },
       { "code":   10, "label": "enter", "groupId": 3, "type": "enter_editing" }
     ]
   ]

app/src/main/assets/ime/text/symbols2/western_default.json

@@ -21,6 +21,9 @@
       { "code":  960, "label": "π", "popup": {
         "main": { "code":  928, "label": "Π" },
         "relevant": [
+          { "code":  969, "label": "ω" },
+          { "code":  945, "label": "α" },
+          { "code":  946, "label": "β" },
           { "code":  937, "label": "Ω" },
           { "code":  956, "label": "μ" }
         ]

app/src/main/assets/ime/theme/floris_black.json

@@ -0,0 +1,73 @@
+{
+  "$type": "dev.patrickgold.florisboard.ime.theme.Theme",
+  "name": "floris_black",
+  "label": "Floris Black",
+  "authors": [ "serebit" ],
+  "isNightTheme": true,
+  "attributes": {
+    "window": {
+      "colorPrimary": "#388E3C",
+      "colorPrimaryDark": "#306D32",
+      "colorAccent": "#FF9800",
+      "navigationBarColor": "@keyboard/background",
+      "navigationBarLight": "false",
+      "semiTransparentColor": "#20FFFFFF",
+      "textColor": "#EEEEEE"
+    },
+    "keyboard": {
+      "background": "#000000"
+    },
+    "key": {
+      "background": "#212121",
+      "backgroundPressed": "#3D3D3D",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor",
+      "showBorder": "true"
+    },
+    "key:enter": {
+      "background": "@window/colorPrimary",
+      "backgroundPressed": "@window/colorPrimaryDark",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor"
+    },
+    "key:shift:capslock": {
+      "foreground": "@window/colorAccent",
+      "foregroundPressed": "@window/colorAccent"
+    },
+    "media": {
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#BDBDBD"
+    },
+    "oneHanded": {
+      "background": "#000000",
+      "foreground": "@window/textColor"
+    },
+    "popup": {
+      "background": "#424242",
+      "backgroundActive": "#707070",
+      "foreground": "@window/textColor"
+    },
+    "privateMode": {
+      "background": "#7800BF",
+      "foreground": "@window/textColor"
+    },
+    "smartbar": {
+      "background": "transparent",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "smartbarButton": {
+      "background": "@key/background",
+      "foreground": "@key/foreground"
+    },
+    "extractEditLayout": {
+      "background": "#282828",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
+    }
+  }
+}

app/src/main/assets/ime/theme/floris_black_borderless.json

@@ -0,0 +1,76 @@
+{
+  "$type": "dev.patrickgold.florisboard.ime.theme.Theme",
+  "name": "floris_black_borderless",
+  "label": "Floris Black Borderless",
+  "authors": [ "serebit" ],
+  "isNightTheme": true,
+  "attributes": {
+    "window": {
+      "colorPrimary": "#388E3C",
+      "colorPrimaryDark": "#306D32",
+      "colorAccent": "#FF9800",
+      "navigationBarColor": "@keyboard/background",
+      "navigationBarLight": "false",
+      "semiTransparentColor": "#20FFFFFF",
+      "textColor": "#EEEEEE"
+    },
+    "keyboard": {
+      "background": "#000000"
+    },
+    "key": {
+      "background": "transparent",
+      "backgroundPressed": "#7F616161",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor",
+      "showBorder": "false"
+    },
+    "key:enter": {
+      "background": "@window/colorPrimary",
+      "backgroundPressed": "@window/colorPrimaryDark",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor"
+    },
+    "key:shift:capslock": {
+      "foreground": "@window/colorAccent",
+      "foregroundPressed": "@window/colorAccent"
+    },
+    "key:space": {
+      "background": "#46616161"
+    },
+    "media": {
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#BDBDBD"
+    },
+    "oneHanded": {
+      "background": "#000000",
+      "foreground": "@window/textColor"
+    },
+    "popup": {
+      "background": "#363636",
+      "backgroundActive": "#5F5F5F",
+      "foreground": "@window/textColor"
+    },
+    "privateMode": {
+      "background": "#7800BF",
+      "foreground": "@window/textColor"
+    },
+    "smartbar": {
+      "background": "transparent",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "smartbarButton": {
+      "background": "#212121",
+      "foreground": "@window/textColor"
+    },
+    "extractEditLayout": {
+      "background": "#282828",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
+    }
+  }
+}

app/src/main/assets/ime/theme/floris_day.json

@@ -59,6 +59,15 @@
     "smartbarButton": {
       "background": "@key/background",
       "foreground": "@key/foreground"
+    },
+    "extractEditLayout": {
+      "background": "#E8E8E8",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#8A8A8A"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
     }
   }
 }

app/src/main/assets/ime/theme/floris_day_borderless.json

@@ -63,6 +63,15 @@
     "smartbarButton": {
       "background": "#FFFFFF",
       "foreground": "@window/textColor"
+    },
+    "extractEditLayout": {
+      "background": "#E8E8E8",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#8A8A8A"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
     }
   }
 }

app/src/main/assets/ime/theme/floris_night.json

@@ -59,6 +59,15 @@
     "smartbarButton": {
       "background": "@key/background",
       "foreground": "@key/foreground"
+    },
+    "extractEditLayout": {
+      "background": "#282828",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
     }
   }
 }

app/src/main/assets/ime/theme/floris_night_borderless.json

@@ -63,6 +63,15 @@
     "smartbarButton": {
       "background": "#424242",
       "foreground": "@window/textColor"
+    },
+    "extractEditLayout": {
+      "background": "#282828",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "extractActionButton": {
+      "background": "@smartbarButton/background",
+      "foreground": "@smartbarButton/foreground"
     }
   }
 }

app/src/main/assets/ime/theme/gboard_day.json

@@ -0,0 +1,64 @@
+{
+  "$type": "dev.patrickgold.florisboard.ime.theme.Theme",
+  "name": "gboard_day",
+  "label": "Gboard Day",
+  "authors": [ "patrickgold", "itskareem" ],
+  "isNightTheme": false,
+  "attributes": {
+    "window": {
+      "colorPrimary": "#0479ed",
+      "colorPrimaryDark": "#0467c9",
+      "colorAccent": "#FF9800",
+      "navigationBarColor": "@keyboard/background",
+      "navigationBarLight": "true",
+      "semiTransparentColor": "#20000000",
+      "textColor": "#000000"
+    },
+    "keyboard": {
+      "background": "#D1D6DC"
+    },
+    "key": {
+      "background": "#FCFFFF",
+      "backgroundPressed": "#F5F5F5",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor",
+      "showBorder": "true"
+    },
+    "key:enter": {
+      "background": "@window/colorPrimary",
+      "backgroundPressed": "@window/colorPrimaryDark",
+      "foreground": "#FFFFFF",
+      "foregroundPressed": "#FFFFFF"
+    },
+    "key:shift:capslock": {
+      "foreground": "@window/colorAccent",
+      "foregroundPressed": "@window/colorAccent"
+    },
+    "media": {
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#757575"
+    },
+    "oneHanded": {
+      "background": "@keyboard/background",
+      "foreground": "#424242"
+    },
+    "popup": {
+      "background": "#EEEEEE",
+      "backgroundActive": "#BDBDBD",
+      "foreground": "@window/textColor"
+    },
+    "privateMode": {
+      "background": "#A000FF",
+      "foreground": "#FFFFFF"
+    },
+    "smartbar": {
+      "background": "@keyboard/background",
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#8A8A8A"
+    },
+    "smartbarButton": {
+      "background": "@key/background",
+      "foreground": "@key/foreground"
+    }
+  }
+}

app/src/main/assets/ime/theme/gboard_night.json

@@ -0,0 +1,64 @@
+{
+  "$type": "dev.patrickgold.florisboard.ime.theme.Theme",
+  "name": "gboard_night",
+  "label": "Gboard Night",
+  "authors": [ "Netscaping" ],
+  "isNightTheme": true,
+  "attributes": {
+    "window": {
+      "colorPrimary": "#5e97f6",
+      "colorPrimaryDark": "#4285f4",
+      "colorAccent": "#FF9800",
+      "navigationBarColor": "@keyboard/background",
+      "navigationBarLight": "false",
+      "semiTransparentColor": "#20FFFFFF",
+      "textColor": "#FFFFFF"
+    },
+    "keyboard": {
+      "background": "#292e33"
+    },
+    "key": {
+      "background": "#484c4f",
+      "backgroundPressed": "#5e5e60",
+      "foreground": "@window/textColor",
+      "foregroundPressed": "@window/textColor",
+      "showBorder": "true"
+    },
+    "key:enter": {
+      "background": "@window/colorPrimary",
+      "backgroundPressed": "@window/colorPrimaryDark",
+      "foreground": "#FFFFFF",
+      "foregroundPressed": "#FFFFFF"
+    },
+    "key:shift:capslock": {
+      "foreground": "@window/colorAccent",
+      "foregroundPressed": "@window/colorAccent"
+    },
+    "media": {
+      "foreground": "@window/textColor",
+      "foregroundAlt": "#BDBDBD"
+    },
+    "oneHanded": {
+      "background": "#373c41",
+      "foreground": "#9b9da0"
+    },
+    "popup": {
+      "background": "#373c41",
+      "backgroundActive": "#5a5e60",
+      "foreground": "@window/textColor"
+    },
+    "privateMode": {
+      "background": "#A000FF",
+      "foreground": "#FFFFFF"
+    },
+    "smartbar": {
+      "background": "transparent",
+      "foreground": "#d4d5d6",
+      "foregroundAlt": "#73FFFFFF"
+    },
+    "smartbarButton": {
+      "background": "#FFFFFF",
+      "foreground": "#686868"
+    }
+  }
+}

app/src/main/assets/license/open_source_licenses.html

@@ -800,6 +800,384 @@ shall not be used in advertising or otherwise to promote the sale,
 use or other dealings in these Data Files or Software without prior
 written authorization of the copyright holder.
     </pre>
+
+    <hr>
+
+    <h3>Dictionary Source 1: wordfreq data</h3>
+    <span>Copyright (c) 2015 Luminoso Technologies, Inc.</span>
+    <pre>
+Creative Commons Attribution-ShareAlike 4.0 International Public
+License
+
+By exercising the Licensed Rights (defined below), You accept and agree
+to be bound by the terms and conditions of this Creative Commons
+Attribution-ShareAlike 4.0 International Public License ("Public
+License"). To the extent this Public License may be interpreted as a
+contract, You are granted the Licensed Rights in consideration of Your
+acceptance of these terms and conditions, and the Licensor grants You
+such rights in consideration of benefits the Licensor receives from
+making the Licensed Material available under these terms and
+conditions.
+
+
+Section 1 -- Definitions.
+
+  a. Adapted Material means material subject to Copyright and Similar
+     Rights that is derived from or based upon the Licensed Material
+     and in which the Licensed Material is translated, altered,
+     arranged, transformed, or otherwise modified in a manner requiring
+     permission under the Copyright and Similar Rights held by the
+     Licensor. For purposes of this Public License, where the Licensed
+     Material is a musical work, performance, or sound recording,
+     Adapted Material is always produced where the Licensed Material is
+     synched in timed relation with a moving image.
+
+  b. Adapter's License means the license You apply to Your Copyright
+     and Similar Rights in Your contributions to Adapted Material in
+     accordance with the terms and conditions of this Public License.
+
+  c. BY-SA Compatible License means a license listed at
+     creativecommons.org/compatiblelicenses, approved by Creative
+     Commons as essentially the equivalent of this Public License.
+
+  d. Copyright and Similar Rights means copyright and/or similar rights
+     closely related to copyright including, without limitation,
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+     specified in Section 2(b)(1)-(2) are not Copyright and Similar
+     Rights.
+
+  e. Effective Technological Measures means those measures that, in the
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+
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+          6(a).
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+       5. Downstream recipients.
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+            a. Offer from the Licensor -- Licensed Material. Every
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+
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+               any additional or different terms or conditions on, or
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+               Material.
+
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+          with, or sponsored, endorsed, or granted official status by,
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+          provided in Section 3(a)(1)(A)(i).
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+
+       1. Moral rights, such as the right of integrity, are not
+          licensed under this Public License, nor are publicity,
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+          the extent possible, the Licensor waives and/or agrees not to
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+          extent necessary to allow You to exercise the Licensed
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+          reserves any right to collect such royalties.
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+
+Section 3 -- License Conditions.
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+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
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+          form), You must:
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+               retain an indication of any previous modifications; and
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+  b. ShareAlike.
+
+     In addition to the conditions in Section 3(a), if You Share
+     Adapted Material You produce, the following conditions also apply.
+
+       1. The Adapter's License You apply must be a Creative Commons
+          license with the same License Elements, this version or
+          later, or a BY-SA Compatible License.
+
+       2. You must include the text of, or the URI or hyperlink to, the
+          Adapter's License You apply. You may satisfy this condition
+          in any reasonable manner based on the medium, means, and
+          context in which You Share Adapted Material.
+
+       3. You may not offer or impose any additional or different terms
+          or conditions on, or apply any Effective Technological
+          Measures to, Adapted Material that restrict exercise of the
+          rights granted under the Adapter's License You apply.
+
+
+Section 4 -- Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
+     to extract, reuse, reproduce, and Share all or a substantial
+     portion of the contents of the database;
+
+  b. if You include all or a substantial portion of the database
+     contents in a database in which You have Sui Generis Database
+     Rights, then the database in which You have Sui Generis Database
+     Rights (but not its individual contents) is Adapted Material,
+
+     including for purposes of Section 3(b); and
+  c. You must comply with the conditions in Section 3(a) if You Share
+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
+  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
+     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
+     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
+     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
+     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
+     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
+     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
+     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
+     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
+     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
+
+  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
+     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
+     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
+     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
+     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
+     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
+     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
+     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
+=======================================================================
+
+Creative Commons is not a party to its public
+licenses. Notwithstanding, Creative Commons may elect to apply one of
+its public licenses to material it publishes and in those instances
+will be considered the “Licensor.” The text of the Creative Commons
+public licenses is dedicated to the public domain under the CC0 Public
+Domain Dedication. Except for the limited purpose of indicating that
+material is shared under a Creative Commons public license or as
+otherwise permitted by the Creative Commons policies published at
+creativecommons.org/policies, Creative Commons does not authorize the
+use of the trademark "Creative Commons" or any other trademark or logo
+of Creative Commons without its prior written consent including,
+without limitation, in connection with any unauthorized modifications
+to any of its public licenses or any other arrangements,
+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the
+public licenses.
+
+Creative Commons may be contacted at creativecommons.org.
+    </pre>
 </body>
 
 </html>

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardHistoryItemAdapter.kt

@@ -0,0 +1,114 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.graphics.drawable.Drawable
+import android.view.LayoutInflater
+import android.view.View
+import android.view.View.GONE
+import android.view.View.VISIBLE
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.clip.provider.ClipboardItem
+import dev.patrickgold.florisboard.ime.clip.provider.ItemType
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+
+class ClipboardHistoryItemAdapter(
+        private val dataSet: ArrayDeque<FlorisClipboardManager.TimedClipData>,
+        private val pins: ArrayDeque<ClipboardItem>
+    ) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+    class ClipboardHistoryTextViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val textView: TextView = view.findViewById(R.id.clipboard_history_item_text)
+    }
+
+    class ClipboardHistoryImageViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val imgView: ImageView = view.findViewById(R.id.clipboard_history_item_img)
+    }
+
+    companion object {
+        private const val MAX_SIZE: Int = 256
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        return if (position < pins.size) {
+            // is a pin
+            pins[position].type.value
+        }else {
+            // regular history item
+            dataSet[position - pins.size].data.type.value
+        }
+    }
+
+
+
+
+    override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        // Create a new view, which defines the UI of the list item
+        val vh = when (viewType) {
+            ItemType.IMAGE.value -> {
+                val view = LayoutInflater.from(viewGroup.context)
+                    .inflate(R.layout.clipboard_history_item_image, viewGroup, false)
+
+                ClipboardHistoryImageViewHolder(view)
+            }
+            ItemType.TEXT.value  -> {
+                val view = LayoutInflater.from(viewGroup.context)
+                    .inflate(R.layout.clipboard_history_item_text, viewGroup, false)
+
+                ClipboardHistoryTextViewHolder(view)
+            }
+            else -> null
+        }!!
+        val clipboardInputManager = ClipboardInputManager.getInstance()
+        (vh.itemView as ClipboardHistoryItemView).keyboardView = clipboardInputManager.getClipboardHistoryView()
+        return vh
+    }
+
+    // Replace the contents of a view (invoked by the layout manager)
+    override fun onBindViewHolder(viewHolder: RecyclerView.ViewHolder, position: Int) {
+        when (viewHolder) {
+            is ClipboardHistoryTextViewHolder -> {
+                var text = if (position < pins.size) {
+                    (viewHolder.itemView as ClipboardHistoryItemView).setPinned()
+                    pins[position].text
+                }else {
+                    (viewHolder.itemView as ClipboardHistoryItemView).setUnpinned()
+                    dataSet[position - pins.size].data.text
+                }
+                if (text!!.length > MAX_SIZE) {
+                    text = text.subSequence(0 until MAX_SIZE).toString() + "..."
+                }
+                viewHolder.textView.text = text
+            }
+
+            is ClipboardHistoryImageViewHolder -> {
+                val uri = if (position < pins.size) {
+                    (viewHolder.itemView as ClipboardHistoryItemView).setPinned()
+                    pins[position].uri
+                }else {
+                    (viewHolder.itemView as ClipboardHistoryItemView).setUnpinned()
+                    dataSet[position - pins.size].data.uri
+                }
+
+
+                viewHolder.imgView.clipToOutline = true
+                viewHolder.imgView.visibility = GONE
+                // For very large images, this can take a bit
+                FlorisClipboardManager.getInstance().executor.execute {
+                    val resolver = FlorisBoard.getInstance().context.contentResolver
+                    val inputStream = resolver.openInputStream(uri!!)
+
+                    val drawable = Drawable.createFromStream(inputStream, "clipboard URI")
+                    viewHolder.itemView.post {
+                        viewHolder.imgView.setImageDrawable(drawable)
+                        viewHolder.imgView.visibility = VISIBLE
+                    }
+                }
+            }
+        }
+    }
+    override fun getItemCount() = pins.size + dataSet.size
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardHistoryItemView.kt

@@ -0,0 +1,86 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.ImageView
+import android.widget.TextView
+import android.widget.Toast
+import androidx.constraintlayout.widget.ConstraintLayout
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.theme.Theme
+import dev.patrickgold.florisboard.ime.theme.ThemeManager
+
+class ClipboardHistoryItemView: ConstraintLayout, ThemeManager.OnThemeUpdatedListener {
+
+    lateinit var keyboardView: ClipboardHistoryView
+    constructor(context: Context) : this(context, null as AttributeSet?)
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
+
+    private var popupManager: ClipboardPopupManager? = null
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        popupManager = ClipboardPopupManager(keyboardView, FlorisBoard.getInstance().popupLayerView, this)
+
+        setOnClickListener{
+            onClickItem()
+        }
+
+        setOnLongClickListener{
+            onLongClickItem()
+        }
+
+        val themeManager = ThemeManager.default()
+        themeManager.registerOnThemeUpdatedListener(this)
+    }
+
+    override fun onThemeUpdated(theme: Theme) {
+        background.setTint(theme.getAttr(Theme.Attr.KEY_BACKGROUND).toSolidColor().color)
+        val pin = findViewById<ImageView>(R.id.clipboard_pin).drawable
+        pin?.setTint(theme.getAttr(Theme.Attr.KEY_FOREGROUND).toSolidColor().color)
+    }
+
+
+    private fun onLongClickItem() : Boolean {
+        popupManager?.show(this)
+        return true
+    }
+
+    private fun onClickItem(){
+        val position = ClipboardInputManager.getInstance().getPositionOfView(this)
+        val instance = FlorisClipboardManager.getInstance()
+        val canPaste = instance.canBePasted(instance.peekHistoryOrPin(position))
+        if (canPaste) {
+            instance.pasteItem(position)
+        }else {
+            Toast.makeText(context, context.getString(R.string.clip__cant_paste), Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    fun setPinned() {
+        val view = findViewById<TextView>(R.id.clipboard_history_item_text)
+        view?.run {
+            val params = layoutParams as LayoutParams
+            params.marginEnd = resources.getDimensionPixelSize(R.dimen.clipboard_text_item_pin_margin)
+            layoutParams = params
+        }
+        findViewById<ImageView>(R.id.clipboard_pin).visibility = VISIBLE
+        invalidate()
+        val themeManager = ThemeManager.default()
+        onThemeUpdated(themeManager.activeTheme)
+    }
+
+    fun setUnpinned(){
+        val view = findViewById<TextView>(R.id.clipboard_history_item_text)
+        // if text view, also update margin.
+        view?.run {
+            val params = layoutParams as LayoutParams
+            params.marginEnd = 0
+            layoutParams = params
+            invalidate()
+        }
+        findViewById<ImageView>(R.id.clipboard_pin).visibility = INVISIBLE
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardHistoryView.kt

@@ -0,0 +1,71 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.ImageButton
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.theme.Theme
+import dev.patrickgold.florisboard.ime.theme.ThemeManager
+import kotlin.math.roundToInt
+
+
+class ClipboardHistoryView : LinearLayout, FlorisBoard.EventListener,
+    ThemeManager.OnThemeUpdatedListener {
+    private val florisboard: FlorisBoard? = FlorisBoard.getInstanceOrNull()
+    private val themeManager: ThemeManager = ThemeManager.default()
+
+    var backButton: ImageButton? = null
+        private set
+
+    var clipText: TextView? = null
+        private set
+
+    var clipboardBar: LinearLayout? = null
+        private set
+
+    private var clipboardHistory: RecyclerView? = null
+
+    private var clearAll: ImageButton? = null
+
+    constructor(context: Context) : this(context, null)
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        florisboard?.addEventListener(this)
+        themeManager.registerOnThemeUpdatedListener(this)
+        backButton = findViewById(R.id.back_to_keyboard_button)
+        clipText = findViewById(R.id.clipboard_text)
+        clipboardBar = findViewById(R.id.clipboard_bar)
+        clipboardHistory = findViewById(R.id.clipboard_history_items)
+        clearAll = findViewById(R.id.clear_clipboard_history)
+
+        onApplyThemeAttributes()
+        // lord alone knows why it doesn't work without this..
+        onThemeUpdated(themeManager.activeTheme)
+    }
+
+    override fun onDetachedFromWindow() {
+        themeManager.unregisterOnThemeUpdatedListener(this)
+        florisboard?.removeEventListener(this)
+        super.onDetachedFromWindow()
+    }
+
+    override fun onThemeUpdated(theme: Theme) {
+        val fgColor = theme.getAttr(Theme.Attr.KEY_FOREGROUND).toSolidColor().color
+        clipText?.setTextColor(fgColor)
+        backButton?.drawable?.setTint(fgColor)
+        clearAll?.setColorFilter(fgColor)
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        val height = florisboard?.inputView?.desiredMediaKeyboardViewHeight ?: 0.0f
+        super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(height.roundToInt(), MeasureSpec.EXACTLY))
+    }
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardInputManager.kt

@@ -0,0 +1,218 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.annotation.SuppressLint
+import android.os.Handler
+import android.os.Looper
+import android.view.MotionEvent
+import android.view.View
+import android.widget.*
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.StaggeredGridLayoutManager
+import dev.patrickgold.florisboard.BuildConfig
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.clip.provider.ClipboardItem
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.core.InputKeyEvent
+import dev.patrickgold.florisboard.ime.core.InputView
+import dev.patrickgold.florisboard.ime.text.key.KeyCode
+import dev.patrickgold.florisboard.ime.text.key.KeyData
+import kotlinx.coroutines.*
+import kotlin.math.pow
+
+/**
+ * Handles the clipboard view and allows for communication between UI and logic.
+ */
+class ClipboardInputManager private constructor() : CoroutineScope by MainScope(),
+    FlorisBoard.EventListener{
+
+    private val florisboard = FlorisBoard.getInstance()
+    private var repeatedKeyPressHandler: Handler? = null
+    private var recyclerView: RecyclerView? = null
+    private var adapter: ClipboardHistoryItemAdapter? = null
+
+    companion object {
+        private var instance: ClipboardInputManager? = null
+
+        @Synchronized
+        fun getInstance(): ClipboardInputManager {
+            if (instance == null) {
+                instance = ClipboardInputManager()
+            }
+            return instance!!
+        }
+    }
+
+    init {
+        florisboard.addEventListener(this)
+    }
+
+    override fun onCreateInputView() {
+        super.onCreateInputView()
+        repeatedKeyPressHandler = Handler(florisboard.context.mainLooper)
+    }
+
+    /**
+     * Called when a new input view has been registered. Used to initialize all media-relevant
+     * views and layouts.
+     */
+    @SuppressLint("ClickableViewAccessibility")
+    override fun onRegisterInputView(inputView: InputView) {
+
+        launch(Dispatchers.Default) {
+
+            inputView.findViewById<ImageButton>(R.id.back_to_keyboard_button)
+                .setOnTouchListener { view, event -> onButtonPressEvent(view, event) }
+
+            inputView.findViewById<ImageButton>(R.id.clear_clipboard_history)
+                .setOnTouchListener { view, event -> onButtonPressEvent(view, event) }
+
+            recyclerView = inputView.findViewById(R.id.clipboard_history_items)
+
+            if (BuildConfig.DEBUG && adapter == null) {
+                error("initClipboard() not called")
+            }
+
+            recyclerView!!.adapter = adapter
+            val manager = StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)
+            recyclerView!!.layoutManager = manager
+        }
+    }
+
+    /**
+     * Clean-up of resources and stopping all coroutines.
+     */
+    override fun onDestroy() {
+
+        cancel()
+        instance = null
+    }
+
+
+    /**
+     * Returns a reference to the [ClipboardHistoryView]
+     */
+    fun getClipboardHistoryView() : ClipboardHistoryView{
+        return FlorisBoard.getInstance().inputView?.mainViewFlipper?.getChildAt(2) as ClipboardHistoryView
+    }
+
+    /**
+     * Returns the adapter position of the view, i.e the position that the item is displayed at (including pins and
+     * history items).
+     *
+     * @param view The ClipboardHistoryItemView whose position is to be determined.
+     * @return The adapter position of the view
+     */
+    fun getPositionOfView(view: View): Int {
+        return recyclerView?.getChildLayoutPosition(view)!!
+    }
+
+    /**
+     * Notify adapter that an item was inserted.
+     *
+     * @param position The position the item was inserted at
+     */
+    fun notifyItemInserted(position: Int) = adapter?.notifyItemInserted(position)
+
+    /**
+     * Notify adapter that an item was removed
+     * @param position The position the item was removed from
+     */
+    fun notifyItemRemoved(position: Int) = adapter?.notifyItemRemoved(position)
+
+    /**
+     * Notify adapter that an item range was removed.
+     * @param start The index the range starts at (inclusive)
+     * @param numberOfItems The number of items removed
+     */
+    fun notifyItemRangeRemoved(start: Int, numberOfItems: Int) = adapter?.notifyItemRangeRemoved(start, numberOfItems)
+
+    /**
+     * Notify adapter that an item was moved
+     * @param from The original position
+     * @param to The final position
+     */
+    fun notifyItemMoved(from: Int, to: Int) = adapter?.notifyItemMoved(from, to)
+
+    /**
+     * Notify adapter that an item was changed.
+     *
+     * @param i The position of the item
+     */
+    fun notifyItemChanged(i: Int) = adapter?.notifyItemChanged(i)
+
+    /**
+     * Handles clicks on the back to keyboard button.
+     */
+    private fun onButtonPressEvent(view: View, event: MotionEvent?): Boolean {
+
+        event ?: return false
+        val data = when (view.id) {
+            R.id.back_to_keyboard_button -> KeyData(code = KeyCode.SWITCH_TO_TEXT_CONTEXT)
+            R.id.clear_clipboard_history -> KeyData(code = KeyCode.CLEAR_CLIPBOARD_HISTORY)
+            else -> null
+        }!!
+        when (event.actionMasked) {
+            MotionEvent.ACTION_DOWN -> {
+                florisboard.keyPressVibrate()
+                florisboard.keyPressSound(data)
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.down(data))
+            }
+            MotionEvent.ACTION_UP -> {
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.up(data))
+            }
+            MotionEvent.ACTION_CANCEL -> {
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.cancel(data))
+            }
+        }
+
+        // MUST return false here so the background selector for showing a transparent bg works
+        return false
+    }
+
+    /**
+     * [recyclerView] will be linked to [dataSet] and [pins] when initialized.
+     *
+     * @param dataSet the data set to link to
+     * @param pins The pins to link to
+     */
+    fun initClipboard(dataSet: ArrayDeque<FlorisClipboardManager.TimedClipData>, pins: ArrayDeque<ClipboardItem>) {
+        this.adapter =  ClipboardHistoryItemAdapter(dataSet = dataSet, pins= pins)
+    }
+
+    /**
+     * Plays an animation of all items moving off the the clipboard from the top.
+     *
+     * @param start The index to start at (to ignore pins)
+     * @param size The size of the clipboard
+     * @return The time in millis till the last animation will complete.
+     */
+    fun clearClipboardWithAnimation(start: Int, size: Int): Long {
+        // list of views to animate
+        val views = arrayListOf<View>()
+        for(i in 0 until size){
+            recyclerView?.findViewHolderForLayoutPosition(i + start)?.let {
+                views.add(it.itemView)
+            }
+        }
+
+        // animate the views
+        var delay = 1L
+        for (view in views) {
+            delay += (10 * delay.toDouble().pow(0.1)).toLong()
+            val an = view.animate().translationX(1500f)
+            an.startDelay = delay
+            an.duration = 250
+        }
+
+        // a little while later we reset the views so they can be reused.
+        Handler(Looper.getMainLooper()).postDelayed({
+            for (view in views) {
+                view.translationX = 0f
+            }
+        }, 450 + delay)
+
+        return 280 + delay
+    }
+
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardPopupManager.kt

@@ -0,0 +1,127 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.View.GONE
+import android.view.View.VISIBLE
+import android.widget.LinearLayout
+import android.widget.Space
+import android.widget.TextView
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.popup.PopupLayerView
+import kotlin.math.max
+
+class ClipboardPopupManager(private val keyboardView: ClipboardHistoryView,
+                            private val popupLayerView: PopupLayerView?,
+                            private val clipboardHistoryItem: ClipboardHistoryItemView) {
+
+    private val popupView: ClipboardPopupView = LayoutInflater.from(keyboardView.context).inflate(R.layout.clip_popup_layout, null) as ClipboardPopupView
+    private var width = 0
+    private var height = 0
+    private var xOffset = 0
+    private var yOffset = 0
+
+
+    init {
+        popupLayerView?.addView(popupView)
+    }
+
+
+    private fun pinButtonListener() {
+        val pos = ClipboardInputManager.getInstance().getPositionOfView(clipboardHistoryItem)
+        val pinned = FlorisClipboardManager.getInstance().isPinned(pos)
+        if (pinned) {
+            FlorisClipboardManager.getInstance().unpinClip(pos)
+            hide()
+        } else {
+            FlorisClipboardManager.getInstance().pinClip(pos)
+            hide()
+        }
+    }
+
+    /**
+     * Show a popup.
+     */
+    fun show(view: ClipboardHistoryItemView) {
+        val pinButton = popupView.findViewById<LinearLayout>(R.id.pin_clip_item)
+        pinButton.setOnClickListener {
+            pinButtonListener()
+        }
+
+        val pos = ClipboardInputManager.getInstance().getPositionOfView(clipboardHistoryItem)
+        val pinned = FlorisClipboardManager.getInstance().isPinned(pos)
+
+        if (pinned) {
+            pinButton.findViewById<TextView>(R.id.pin_clip_item_text).text = view.context.getString(R.string.clip__unpin_item)
+        }
+
+        val delete = popupView.findViewById<LinearLayout>(R.id.remove_from_history)
+        delete.setOnClickListener {
+            FlorisClipboardManager.getInstance().removeClip(pos)
+            hide()
+        }
+
+        val clipboardManager = FlorisClipboardManager.getInstance()
+        val clipItem = clipboardManager.peekHistoryOrPin(pos)
+        val pasteShouldBeEnabled = FlorisClipboardManager.getInstance().canBePasted(clipItem)
+        // the clipboard item has any of the supported mime types of the editor OR is plain text.
+
+        val paste = popupView.findViewById<LinearLayout>(R.id.paste_clip_item)
+        if (pasteShouldBeEnabled) {
+            paste.setOnClickListener {
+                FlorisClipboardManager.getInstance().pasteItem(pos)
+                hide()
+            }
+            popupView.findViewById<Space>(R.id.paste_clip_item_space).visibility = VISIBLE
+            paste.visibility = VISIBLE
+        }else {
+            popupView.findViewById<Space>(R.id.paste_clip_item_space).visibility = GONE
+            paste.visibility = GONE
+        }
+
+        FlorisBoard.getInstance().isClipboardContextMenuShown = true
+        popupLayerView?.clipboardPopupManager = this
+        popupLayerView?.intercept = popupView
+        calc(view)
+
+        popupView.properties.let {
+            it.width = this.width
+            it.height = this.height
+            it.xOffset = this.xOffset
+            it.yOffset = this.yOffset
+        }
+        popupView.show(keyboardView)
+    }
+
+    /**
+     * Calculate sizes of popup.
+     */
+    private fun calc(view: ClipboardHistoryItemView) {
+        val widthMeasureSpec: Int = View.MeasureSpec.makeMeasureSpec(view.width, View.MeasureSpec.AT_MOST)
+        val heightMeasureSpec: Int = View.MeasureSpec.makeMeasureSpec(100000, View.MeasureSpec.AT_MOST)
+        popupView.invalidate()
+        popupView.measure(widthMeasureSpec, heightMeasureSpec)
+
+        width = view.width * 4 / 5
+        height = popupView.measuredHeight
+        xOffset = view.x.toInt() + (view.width - width) / 2
+        // y offset is either where the top of the item is OR if the top is off screen, the top of the keyboard.
+        yOffset = max(view.y.toInt() - keyboardView.height - height / 2 - 20, keyboardView.y.toInt() - keyboardView.height - height / 2 - 20)
+    }
+
+    /**
+     * Hides a popup.
+     */
+    fun hide() {
+        popupView.hide()
+        popupLayerView?.intercept = null
+        popupLayerView?.clipboardPopupManager = null
+        FlorisBoard.getInstance().isClipboardContextMenuShown = false
+
+        popupView.apply {
+            visibility = GONE
+        }
+
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/ClipboardPopupView.kt

@@ -0,0 +1,130 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.content.Context
+import android.graphics.drawable.PaintDrawable
+import android.util.AttributeSet
+import android.view.View
+import android.widget.FrameLayout
+import android.widget.ImageView
+import android.widget.LinearLayout
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.theme.Theme
+import dev.patrickgold.florisboard.ime.theme.ThemeManager
+import dev.patrickgold.florisboard.util.ViewLayoutUtils
+
+class ClipboardPopupView: LinearLayout, ThemeManager.OnThemeUpdatedListener {
+
+    constructor(context: Context) : this(context, null)
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(
+        context,
+        attrs,
+        defStyleAttr
+    )
+
+    private var backgroundDrawable: PaintDrawable = PaintDrawable().apply {
+        setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
+    }
+    private val themeManager: ThemeManager = ThemeManager.default()
+
+    val properties: Properties = Properties(
+        width = 0,
+        height = 0,
+        xOffset = 0,
+        yOffset = 0
+    )
+    private val isShowing: Boolean
+        get() = visibility == VISIBLE
+
+    init {
+        visibility = GONE
+        background = backgroundDrawable
+    }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        themeManager.registerOnThemeUpdatedListener(this)
+    }
+
+    override fun onDetachedFromWindow() {
+        super.onDetachedFromWindow()
+        themeManager.unregisterOnThemeUpdatedListener(this)
+    }
+
+    override fun onThemeUpdated(theme: Theme) {
+        backgroundDrawable.apply {
+            setTint(theme.getAttr(Theme.Attr.POPUP_BACKGROUND).toSolidColor().color)
+        }
+
+        this.findViewById<ImageView>(R.id.pin_clip_item_icon).drawable.apply {
+            setTint(theme.getAttr(Theme.Attr.WINDOW_TEXT_COLOR).toSolidColor().color)
+        }
+
+
+        this.findViewById<ImageView>(R.id.remove_from_history_icon).drawable.apply {
+            setTint(theme.getAttr(Theme.Attr.WINDOW_TEXT_COLOR).toSolidColor().color)
+        }
+
+        this.findViewById<ImageView>(R.id.paste_clip_item_icon).drawable.apply {
+            setTint(theme.getAttr(Theme.Attr.WINDOW_TEXT_COLOR).toSolidColor().color)
+        }
+
+        if (isShowing) {
+            invalidate()
+        }
+    }
+
+    private fun applyProperties(anchor: View) {
+        val anchorCoords = IntArray(2)
+        anchor.getLocationInWindow(anchorCoords)
+        val anchorX = anchorCoords[0]
+        val anchorY = anchorCoords[1] + anchor.measuredHeight
+        when (val lp = layoutParams) {
+            is FrameLayout.LayoutParams -> lp.apply {
+                width = properties.width
+                height = properties.height
+                setMargins(
+                    anchorX + properties.xOffset,
+                    anchorY + properties.yOffset,
+                    0,
+                    0
+                )
+            }
+            else -> {
+                layoutParams = FrameLayout.LayoutParams(properties.width, properties.height).apply {
+                    setMargins(
+                        anchorX + properties.xOffset,
+                        anchorY + properties.yOffset,
+                        0,
+                        0
+                    )
+                }
+            }
+        }
+        if (isShowing) {
+            requestLayout()
+            invalidate()
+        }
+    }
+
+    fun show(anchor: View) {
+        applyProperties(anchor)
+        visibility = VISIBLE
+        requestLayout()
+        invalidate()
+    }
+
+    fun hide() {
+        visibility = GONE
+        requestLayout()
+        invalidate()
+    }
+
+    data class Properties(
+        var width: Int,
+        var height: Int,
+        var xOffset: Int,
+        var yOffset: Int
+    )
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/FlorisClipboardManager.kt

@@ -0,0 +1,405 @@
+package dev.patrickgold.florisboard.ime.clip
+
+import android.content.ClipboardManager
+import android.content.Context
+import android.content.Context.CLIPBOARD_SERVICE
+import android.os.Handler
+import android.os.Looper
+import dev.patrickgold.florisboard.ime.clip.provider.*
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.core.PrefHelper
+import dev.patrickgold.florisboard.util.cancelAll
+import dev.patrickgold.florisboard.util.postAtScheduledRate
+import timber.log.Timber
+import java.io.Closeable
+import java.util.*
+import java.util.concurrent.ExecutorService
+import kotlin.collections.ArrayDeque
+
+/**
+ * [FlorisClipboardManager] manages the clipboard and clipboard history.
+ *
+ * Also just going to document how all the classes here work.
+ *
+ * [FlorisClipboardManager] handles storage and retrieval of clipboard items. All manipulation of the
+ * clipboard goes through here.
+ *
+ * [ClipboardInputManager] handles the input view and allows for communication between UI and logic
+ *
+ * [ClipboardHistoryView] is the view representing the clipboard context. Only does some theme stuff.
+ *
+ * [ClipboardHistoryItemView] is the view representing an item in the clipboard history (either image or text). Only
+ * does UI stuff.
+ *
+ * [ClipboardHistoryItemAdapter] is the recyclerview adapter that backs the clipboard history.
+ *
+ * [ClipboardPopupManager] handles the popups for each [ClipboardHistoryItemView] (each item has its own popup manager)
+ *
+ * [ClipboardPopupView] is the view representing a popup displayed when long pressing on a clipboard history item.
+ */
+class FlorisClipboardManager private constructor() : ClipboardManager.OnPrimaryClipChangedListener, Closeable {
+
+    private lateinit var pinsDao: PinnedClipboardItemDao
+    lateinit var executor: ExecutorService
+
+    // Using ArrayDeque because it's "technically" the correct data structure (I think).
+    // Newest stored first, oldest stored last.
+    private var history: ArrayDeque<TimedClipData> = ArrayDeque()
+    private var pins: ArrayDeque<ClipboardItem> = ArrayDeque()
+    private var current: ClipboardItem? = null
+    private var onPrimaryClipChangedListeners: ArrayList<OnPrimaryClipChangedListener> = arrayListOf()
+    private lateinit var systemClipboardManager: ClipboardManager
+    private lateinit var handler: Handler
+    private lateinit var prefHelper: PrefHelper
+
+    data class TimedClipData(val data: ClipboardItem, val timeUTC: Long)
+
+    interface OnPrimaryClipChangedListener {
+        fun onPrimaryClipChanged()
+    }
+
+    companion object {
+        private var instance: FlorisClipboardManager? = null
+
+        // 1 minute
+        private const val INTERVAL = 60 * 1000L
+
+        @Synchronized
+        fun getInstance(): FlorisClipboardManager {
+            if (instance == null) {
+                instance = FlorisClipboardManager()
+            }
+            return instance!!
+        }
+
+        @Synchronized
+        fun getInstanceOrNull(): FlorisClipboardManager? = instance
+
+        /**
+         * Taken from ClipboardDescription.java from the AOSP
+         *
+         * Helper to compare two MIME types, where one may be a pattern.
+         * @param concreteType A fully-specified MIME type.
+         * @param desiredType A desired MIME type that may be a pattern such as * / *.
+         * @return Returns true if the two MIME types match.
+         */
+        fun compareMimeTypes(concreteType: String, desiredType: String): Boolean {
+            val typeLength = desiredType.length
+            if (typeLength == 3 && desiredType == "*/*") {
+                return true
+            }
+            val slashpos = desiredType.indexOf('/')
+            if (slashpos > 0) {
+                if (typeLength == slashpos + 2 && desiredType[slashpos + 1] == '*') {
+                    if (desiredType.regionMatches(0, concreteType, 0, slashpos + 1)) {
+                        return true
+                    }
+                } else if (desiredType == concreteType) {
+                    return true
+                }
+            }
+            return false
+        }
+    }
+
+
+    /**
+     * Adds a new item to the clipboard history (if enabled).
+     */
+    fun updateHistory(newData: ClipboardItem) {
+        val clipboardPrefs = prefHelper.clipboard
+
+        if (clipboardPrefs.enableHistory) {
+            if (clipboardPrefs.limitHistorySize) {
+                var numRemoved = 0
+                while (history.size >= clipboardPrefs.maxHistorySize) {
+                    numRemoved += 1
+                    history.removeLast().data.close()
+                }
+                ClipboardInputManager.getInstance().notifyItemRangeRemoved(history.size, numRemoved)
+            }
+
+
+            val timed = TimedClipData(newData, System.currentTimeMillis())
+            history.addFirst(timed)
+            ClipboardInputManager.getInstance().notifyItemInserted(pins.size)
+        }
+
+    }
+
+    /**
+     * Used so that [onPrimaryClipChanged] knows whether it was called by [changeCurrent] (and hence shouldn't update
+     * history)
+     */
+    private var shouldUpdateHistory = true
+
+    /**
+     * Changes current clipboard item. WITHOUT updating the history.
+     */
+    fun changeCurrent(newData: ClipboardItem, closePrevious: Boolean) {
+        if (prefHelper.clipboard.enableInternal) {
+            if (closePrevious) current?.close()
+            current = newData
+            val isEqual = when (newData.type) {
+                ItemType.TEXT -> newData.text == systemClipboardManager.primaryClip?.getItemAt(0)?.text
+                ItemType.IMAGE -> newData.uri == systemClipboardManager.primaryClip?.getItemAt(0)?.uri
+            }
+            if (prefHelper.clipboard.syncToSystem && !isEqual)
+                systemClipboardManager.setPrimaryClip(newData.toClipData())
+        } else {
+            shouldUpdateHistory = false
+            systemClipboardManager.setPrimaryClip(newData.toClipData())
+        }
+        onPrimaryClipChangedListeners.forEach { it.onPrimaryClipChanged() }
+    }
+
+
+    /**
+     * Change the current text on clipboard, update history (if enabled).
+     *
+     */
+    fun addNewClip(newData: ClipboardItem) {
+        updateHistory(newData)
+        // If history is disabled, this new item will replace the old one and hence should be closed.
+        changeCurrent(newData, !prefHelper.clipboard.enableHistory)
+    }
+
+    /**
+     * Wraps some plaintext in a ClipData and calls [addNewClip]
+     */
+    fun addNewPlaintext(newText: String) {
+        val newData = ClipboardItem(null, ItemType.TEXT, null, newText, ClipboardItem.TEXT_PLAIN)
+        addNewClip(newData)
+    }
+
+    val primaryClip: ClipboardItem?
+        get() = if (prefHelper.clipboard.enableInternal) {
+            current
+        } else {
+            systemClipboardManager.primaryClip?.let { ClipboardItem.fromClipData(it, false) }
+        }
+
+    fun peekHistory(index: Int): ClipboardItem? {
+        return history.getOrNull(index)?.data
+    }
+
+    fun addPrimaryClipChangedListener(listener: OnPrimaryClipChangedListener) {
+        onPrimaryClipChangedListeners.add(listener)
+    }
+
+    fun removePrimaryClipChangedListener(listener: OnPrimaryClipChangedListener) {
+        onPrimaryClipChangedListeners.remove(listener)
+    }
+
+    /**
+     * Called by system clipboard when the contents are changed
+     */
+    override fun onPrimaryClipChanged() {
+        // Run on async thread to avoid blocking.
+        if (systemClipboardManager.primaryClip?.getItemAt(0)?.text == null &&
+            systemClipboardManager.primaryClip?.getItemAt(0)?.uri == null) {
+            return
+        }
+
+        val isEqual = when (primaryClip?.type) {
+            ItemType.TEXT -> primaryClip?.text == systemClipboardManager.primaryClip?.getItemAt(0)?.text
+            ItemType.IMAGE -> primaryClip?.uri == systemClipboardManager.primaryClip?.getItemAt(0)?.uri
+            null -> false
+        }
+        systemClipboardManager.primaryClip?.let {
+            if (prefHelper.clipboard.enableInternal) {
+                // In the event that the internal clipboard is enabled, sync to internal clipboard is enabled
+                // and the item is not already in internal clipboard, add it.
+                if (prefHelper.clipboard.syncToFloris && !isEqual) {
+                    addNewClip(ClipboardItem.fromClipData(it, true))
+                }
+            } else if (prefHelper.clipboard.enableHistory) {
+                // in the event history is enabled, and it should be updated it is updated
+                if (shouldUpdateHistory) {
+                    updateHistory(ClipboardItem.fromClipData(it, false))
+                } else {
+                    shouldUpdateHistory = true
+                }
+            }
+        }
+    }
+
+
+    fun hasPrimaryClip(): Boolean {
+        return this.primaryClip != null
+    }
+
+    /**
+     * Cleans up.
+     *
+     * Sets [instance] to null for GC. Unregisters the system clipboard listener, cancels clipboard clean ups.
+     */
+    override fun close() {
+        systemClipboardManager.removePrimaryClipChangedListener(this)
+        handler.cancelAll()
+        instance = null
+    }
+
+    /**
+     * Initialize the floris clipboard manager. Exists to avoid dependency loop due to reference
+     * to [FlorisBoard.context]
+     *
+     * Sets up the clipboard cleanup task, links the recycler view in clipInputManager to [history].
+     *
+     * @param context Required to register as an onPrimaryClipChangedListener of ClipboardManager
+     */
+    fun initialize(context: Context) {
+
+        this.systemClipboardManager = (context.getSystemService(CLIPBOARD_SERVICE) as ClipboardManager)
+        systemClipboardManager.addPrimaryClipChangedListener(this)
+
+        prefHelper = PrefHelper.getDefaultInstance(context)
+
+        val cleanUpClipboard = Runnable {
+
+            if (!prefHelper.clipboard.cleanUpOld) {
+                return@Runnable
+            }
+
+            val currentTime = System.currentTimeMillis()
+            var numToPop = 0
+            val expiryTime = prefHelper.clipboard.cleanUpAfter * 60 * 1000
+            for (item in history.asReversed()) {
+                if (item.timeUTC + expiryTime < currentTime) {
+                    numToPop += 1
+                } else {
+                    break
+                }
+            }
+            for (i in 0 until numToPop) {
+                history.removeLast().data.close()
+            }
+            ClipboardInputManager.getInstance().notifyItemRangeRemoved(pins.size + history.size, numToPop)
+        }
+        FlorisBoard.getInstance().clipInputManager.initClipboard(this.history, this.pins)
+        handler = Handler(Looper.getMainLooper())
+        prefHelper
+        handler.postAtScheduledRate(0, INTERVAL, cleanUpClipboard)
+        executor = FlorisBoard.getInstance().asyncExecutor
+        executor.execute {
+            pinsDao = PinnedItemsDatabase.getInstance().clipboardItemDao()
+            pinsDao.getAll().toCollection(this.pins)
+            FlorisContentProvider.getInstance().initIfNotAlready()
+        }
+    }
+
+
+    /**
+     * Clears the history with an animation.
+     */
+    fun clearHistoryWithAnimation() {
+        val clipInputManager = FlorisBoard.getInstance().clipInputManager
+        val delay = clipInputManager.clearClipboardWithAnimation(pins.size, history.size)
+
+        handler.postDelayed({
+            val size = history.size
+            for (item in history) {
+                item.data.close()
+            }
+            history.clear()
+            clipInputManager.notifyItemRangeRemoved(pins.size, size)
+        }, delay)
+    }
+
+    fun pinClip(adapterPos: Int) {
+        val clipInputManager = FlorisBoard.getInstance().clipInputManager
+        val pin = history.removeAt(adapterPos - pins.size)
+        pins.addFirst(pin.data)
+        clipInputManager.notifyItemMoved(adapterPos, 0)
+        clipInputManager.notifyItemChanged(0)
+
+        executor.execute {
+            val uid = pinsDao.insert(pin.data)
+            pin.data.uid = uid
+        }
+    }
+
+    /**
+     * Get the item at a particular [adapterPos] (i.e the position the item is displayed at.)
+     */
+    fun peekHistoryOrPin(adapterPos: Int): ClipboardItem {
+        return when {
+            adapterPos < pins.size -> pins[adapterPos]
+            else -> history[adapterPos - pins.size].data
+        }
+    }
+
+
+    fun isPinned(position: Int): Boolean {
+        return when {
+            position < pins.size -> true
+            else -> false
+        }
+    }
+
+    fun unpinClip(adapterPos: Int) {
+        val clipInputManager = FlorisBoard.getInstance().clipInputManager
+        val item = pins.removeAt(adapterPos)
+
+        val clipboardPrefs = prefHelper.clipboard
+        if (clipboardPrefs.limitHistorySize) {
+            var numRemoved = 0
+            while (history.size >= clipboardPrefs.maxHistorySize) {
+                numRemoved += 1
+                history.removeLast().data.close()
+            }
+            ClipboardInputManager.getInstance().notifyItemRangeRemoved(history.size, numRemoved)
+        }
+
+        val timed = TimedClipData(item, System.currentTimeMillis())
+        history.addFirst(timed)
+
+        clipInputManager.notifyItemMoved(adapterPos, pins.size)
+        clipInputManager.notifyItemChanged(pins.size)
+
+        executor.execute {
+            pinsDao.delete(item)
+        }
+    }
+
+    fun removeClip(pos: Int) {
+        when {
+            pos < pins.size -> {
+                val item = pins.removeAt(pos)
+                executor.execute {
+                    Timber.d("removing pin")
+                    pinsDao.delete(item)
+                }
+                item.close()
+            }
+            else -> {
+                history.removeAt(pos - pins.size).data.close()
+            }
+        }
+        val clipboardInputManager = ClipboardInputManager.getInstance()
+        clipboardInputManager.notifyItemRemoved(pos)
+    }
+
+
+    fun pasteItem(pos: Int) {
+        val item = peekHistoryOrPin(pos)
+        FlorisBoard.getInstance().activeEditorInstance.commitClipboardItem(item)
+    }
+
+    /**
+     * Returns true if the editor can accept the clip item, else false.
+     */
+    fun canBePasted(clipItem: ClipboardItem?): Boolean {
+        if (clipItem == null) return false
+
+        return clipItem.mimeTypes.contains("text/plain") || FlorisBoard.getInstance().activeEditorInstance.contentMimeTypes?.any { editorType ->
+            clipItem.mimeTypes.any { clipType ->
+                if (editorType != null) {
+                    compareMimeTypes(clipType, editorType)
+                }else { false }
+            }
+        } == true
+    }
+
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/provider/FileStorage.kt

@@ -0,0 +1,75 @@
+package dev.patrickgold.florisboard.ime.clip.provider
+
+import android.net.Uri
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import timber.log.Timber
+import java.io.File
+
+/**
+ * Backend class which is used by [FlorisContentProvider] to serve content.
+ */
+class FileStorage private constructor() {
+
+
+    companion object {
+        private const val BUF_SIZE = 1024 * 8
+        private var instance: FileStorage? = null
+        private var offset = 0
+
+
+        fun getInstance() : FileStorage {
+            if (this.instance == null){
+                this.instance = FileStorage()
+            }
+            return instance!!
+        }
+
+    }
+
+
+    /**
+     * Clones a content URI to internal storage.
+     * @param uri The URI
+     * @return  the file's name which is a unique long
+     */
+    @Synchronized
+    fun cloneURI(uri: Uri) : Long {
+        val context = FlorisBoard.getInstance().context
+        // nanoTime + the number of items created so that it's unique.
+        val name = (System.nanoTime() + offset)
+
+        // Just a normal copy from input stream to output stream.
+        val source = context.contentResolver.openInputStream(uri)!!
+        val sink = File(context.filesDir, name.toString()).outputStream()
+        var nread = 0L
+        val buf = ByteArray(BUF_SIZE)
+        var n: Int
+        while (source.read(buf).also { n = it } > 0) {
+            sink.write(buf, 0, n)
+            nread += n.toLong()
+        }
+
+        source.close()
+        sink.close()
+
+        return name
+    }
+
+    /**
+     * Deletes the file corresponding to an id.
+     */
+    fun deleteById(id: Long) {
+        Timber.d("Cleaning up $id")
+        val file = File(FlorisBoard.getInstance().filesDir, id.toString())
+        file.delete()
+    }
+
+    /**
+     * Get the file address of an id.
+     */
+    fun getAddress(id: Long): String {
+        return FlorisBoard.getInstance().filesDir.toString() + "/$id"
+    }
+
+
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/provider/FlorisContentProvider.kt

@@ -0,0 +1,132 @@
+package dev.patrickgold.florisboard.ime.clip.provider
+
+import android.content.*
+import android.database.Cursor
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import androidx.room.Room
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import timber.log.Timber
+import java.io.File
+import java.util.concurrent.ExecutorService
+
+/**
+ * Allows apps to access images on the clipboard.
+ *
+ * This is sometimes called by the UI thread, so all functions are non blocking.
+ * Database accesses are performed async.
+ */
+class FlorisContentProvider : ContentProvider() {
+    private lateinit var fileUriDao: FileUriDao
+    private val mimeTypes: HashMap<Long, Array<String>> = hashMapOf()
+    private lateinit var executor: ExecutorService
+
+    override fun onCreate(): Boolean {
+        instance = this
+        return true
+    }
+
+    fun initIfNotAlready(){
+        if (this::fileUriDao.isInitialized){
+            return
+        }
+
+
+        fileUriDao = Room.databaseBuilder(
+            context!!,
+            FileUriDatabase::class.java, "fileuridb"
+        ).build().fileUriDao()
+
+        executor = FlorisBoard.getInstance().asyncExecutor
+        for (fileUri in fileUriDao.getAll()) {
+            mimeTypes[fileUri.fileName] = fileUri.mimeTypes
+        }
+    }
+
+    override fun query(
+        uri: Uri,
+        projection: Array<out String>?,
+        selection: String?,
+        selectionArgs: Array<out String>?,
+        sortOrder: String?
+    ): Cursor? {
+        // just return nothing, nothing should call this function at all.
+        return null
+    }
+
+    override fun getType(uri: Uri): String {
+        return when (matcher.match(uri)) {
+            CLIP_ITEM -> mimeTypes.getOrElse(ContentUris.parseId(uri), { throw IllegalArgumentException("Don't have this item!") })[0]
+            CLIPS_TABLE -> "vnd.android.cursor.dir/$AUTHORITY.clip"
+            else -> throw IllegalArgumentException("Don't know what this is $uri")
+        }
+    }
+
+    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor {
+        val id = ContentUris.parseId(uri)
+        val path = File(FileStorage.getInstance().getAddress(id))
+
+        // Nothing has permission to write anyway.
+        return ParcelFileDescriptor.open(path, ParcelFileDescriptor.MODE_READ_ONLY)
+    }
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri {
+        when (matcher.match(uri)){
+            CLIPS_TABLE -> {
+                val id = FileStorage.getInstance().cloneURI(Uri.parse(values?.getAsString("uri")))
+                val mimes =  values?.getAsString("mimetypes")?.split(",")?.toTypedArray()
+                mimes?.let {
+                    mimeTypes[id] = mimes
+                    executor.execute {
+                        Timber.d("Inserted file uri $id")
+                        fileUriDao.insert(FileUri(id, mimes))
+                    }
+                }
+
+                return ContentUris.withAppendedId(CLIPS_URI, id)
+            }
+            else -> throw IllegalArgumentException("Don't know what this is $uri")
+        }
+    }
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int {
+        when (matcher.match(uri)){
+            CLIP_ITEM -> {
+                val id = ContentUris.parseId(uri)
+                FileStorage.getInstance().deleteById(id)
+                mimeTypes.remove(id)
+                context?.revokeUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                executor.execute {
+                    fileUriDao.delete(id)
+                }
+                return 1
+            }
+            else -> throw IllegalArgumentException("Don't know what this is $uri")
+        }
+    }
+
+    override fun update(uri: Uri, values: ContentValues?, selection: String?, selectionArgs: Array<out String>?): Int {
+        throw IllegalArgumentException("This ContentProvider does not support update.")
+    }
+
+
+    companion object {
+        private var instance: FlorisContentProvider? = null
+        const val AUTHORITY = "dev.patrickgold.florisboard.provider.clip"
+        val CONTENT_URI: Uri = Uri.parse("content://$AUTHORITY")
+        val CLIPS_URI: Uri = Uri.parse("content://$AUTHORITY/clips")
+
+        fun getInstance(): FlorisContentProvider {
+            return instance!!
+        }
+
+        private const val CLIPS_TABLE = 1
+        private const val CLIP_ITEM = 0
+
+        val matcher: UriMatcher = UriMatcher(UriMatcher.NO_MATCH).apply {
+            addURI(AUTHORITY, "clips/#", CLIP_ITEM)
+            addURI(AUTHORITY, "clips", CLIPS_TABLE)
+        }
+
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/clip/provider/FlorisDatabase.kt

@@ -0,0 +1,258 @@
+package dev.patrickgold.florisboard.ime.clip.provider
+
+import android.content.ClipData
+import android.content.ContentValues
+import android.net.Uri
+import android.provider.BaseColumns
+import androidx.room.*
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import java.io.Closeable
+
+
+enum class ItemType(val value: Int) {
+    TEXT(1),
+    IMAGE(2);
+
+    companion object {
+        fun fromInt(value : Int) : ItemType {
+            return values().first { it.value == value }
+        }
+    }
+}
+
+
+/**
+ * Represents an item on the clipboard.
+ * The URI stored belongs to FlorisContentProvider, not whatever app copied the image
+ *
+ * If type == ItemType.IMAGE there must be a uri set
+ * if type == ItemType.TEXT there must be a text set
+ */
+@Entity(tableName = "pins")
+data class ClipboardItem(
+    /** Only used for pins */
+    @PrimaryKey(autoGenerate = true) @ColumnInfo(name=BaseColumns._ID, index=true) var uid: Long?,
+    val type: ItemType,
+    val uri: Uri?,
+    val text: String?,
+    val mimeTypes: Array<String>) : Closeable{
+
+    /**
+     * Creates a new ClipData which has the same contents as this.
+     */
+    fun toClipData(): ClipData {
+        return when (type) {
+            ItemType.IMAGE -> {
+                ClipData.newUri(FlorisBoard.getInstance().context.contentResolver, "Clipboard data", uri)
+            }
+            ItemType.TEXT -> {
+                ClipData.newPlainText("Clipboard data", text)
+            }
+        }
+    }
+
+    /**
+     * Instructs the content provider to delete this URI. If not an image, is a noop
+     */
+    override fun close() {
+        if (type == ItemType.IMAGE) {
+            FlorisBoard.getInstance().context.contentResolver.delete(this.uri!!, null, null)
+        }
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as ClipboardItem
+
+        if (uid != other.uid) return false
+        if (type != other.type) return false
+        if (uri != other.uri) return false
+        if (text != other.text) return false
+        if (!mimeTypes.contentEquals(other.mimeTypes)) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = uid.hashCode()
+        result = 31 * result + type.hashCode()
+        result = 31 * result + (uri?.hashCode() ?: 0)
+        result = 31 * result + (text?.hashCode() ?: 0)
+        result = 31 * result + mimeTypes.contentHashCode()
+        return result
+    }
+
+    fun stringRepresentation(): String {
+        return when {
+            uri != null -> "(Image) $uri"
+            text != null -> text
+            else -> "#ERROR"
+        }
+    }
+
+    companion object {
+        /**
+         * So that every item doesn't have to allocate its own array.
+         */
+        val TEXT_PLAIN = arrayOf("text/plain")
+
+        /**
+         * Returns a new ClipboardItem based on a ClipData
+         *
+         * @param data The ClipData to clone.
+         * @param cloneUri Whether to store the image using [FlorisContentProvider].
+         */
+        fun fromClipData(data: ClipData, cloneUri: Boolean) : ClipboardItem {
+
+            val type = when {
+                data.getItemAt(0)?.uri != null -> ItemType.IMAGE
+                data.getItemAt(0)?.text != null -> ItemType.TEXT
+                else -> null
+            }!!
+
+            val uri = if (type == ItemType.IMAGE) {
+                    if (data.getItemAt(0).uri.authority == FlorisContentProvider.CONTENT_URI.authority || !cloneUri){
+                        data.getItemAt(0).uri
+                    }else {
+                        val values = ContentValues().apply{
+                            put("uri", data.getItemAt(0).uri.toString())
+                            put("mimetypes", data.description.filterMimeTypes("*/*").joinToString(","))
+                        }
+                        FlorisBoard.getInstance().context.contentResolver.insert(FlorisContentProvider.CLIPS_URI, values)
+                    }
+            } else { null }
+
+            val text = data.getItemAt(0).text?.toString()
+            val mimeTypes = when (type) {
+                ItemType.IMAGE -> {
+                    (0 until data.description.mimeTypeCount).map {
+                        data.description.getMimeType(it)
+                    }.toTypedArray()
+                }
+                ItemType.TEXT -> { TEXT_PLAIN }
+            }
+
+            return ClipboardItem(null, type, uri, text, mimeTypes)
+        }
+    }
+}
+
+class Converters {
+    @TypeConverter
+    fun uriFromString(value: String?): Uri? {
+        return Uri.parse(value)
+    }
+
+    @TypeConverter
+    fun stringFromUri(value: Uri?): String {
+        return value.toString()
+    }
+
+    @TypeConverter
+    fun itemTypeToInt(value: ItemType?): Int? {
+        return value?.value
+    }
+
+    @TypeConverter
+    fun intToItemType(value: Int?): ItemType? {
+        return value?.let { ItemType.fromInt(it) }
+    }
+
+    /**
+     * Only works because the string array is a mimetype.
+     * DOES NOT USE A GENERALIZED FORMAT.
+     */
+    @TypeConverter
+    fun mimeTypesToString(mimeTypes: Array<String>): String {
+        return mimeTypes.joinToString(",")
+    }
+    @TypeConverter
+    fun stringToMimeTypes(value: String): Array<String> {
+        return value.split(",").toTypedArray()
+    }
+}
+
+
+@Dao
+interface PinnedClipboardItemDao {
+    @Query("SELECT * FROM pins")
+    fun getAll(): List<ClipboardItem>
+
+    @Insert
+    fun insert(item: ClipboardItem) : Long
+
+    @Delete
+    fun delete(item: ClipboardItem)
+}
+
+@Database(entities = [ClipboardItem::class], version = 1)
+@TypeConverters(Converters::class)
+abstract class PinnedItemsDatabase : RoomDatabase() {
+    abstract fun clipboardItemDao() : PinnedClipboardItemDao
+
+    companion object {
+        private var instance: PinnedItemsDatabase? = null
+
+        fun getInstance(): PinnedItemsDatabase {
+
+            if (instance == null) {
+                instance = Room.databaseBuilder(
+                    FlorisBoard.getInstance().context,
+                    PinnedItemsDatabase::class.java,
+                    "pins").build()
+            }
+
+            return instance!!
+        }
+    }
+}
+
+@Entity(tableName = "file_uris")
+data class FileUri(
+    @PrimaryKey @ColumnInfo(name=BaseColumns._ID, index=true) val fileName: Long,
+    val mimeTypes: Array<String>
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as FileUri
+
+        if (fileName != other.fileName) return false
+        if (!mimeTypes.contentEquals(other.mimeTypes)) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = 31 + fileName.hashCode()
+        result = 31 * result + mimeTypes.contentHashCode()
+        return result
+    }
+}
+
+@Dao
+interface FileUriDao {
+    @Query("SELECT * FROM file_uris WHERE ${BaseColumns._ID} == (:uid)")
+    fun getById(uid: Long) : FileUri
+
+    @Query("DELETE FROM file_uris WHERE ${BaseColumns._ID} == (:id)")
+    fun delete(id: Long)
+
+    @Insert
+    fun insert(vararg fileUris: FileUri)
+
+    @Query("SELECT COUNT(*) FROM file_uris WHERE ${BaseColumns._ID} == (:id)")
+    fun numberWithId(id: Long): Int
+
+    @Query("SELECT * FROM file_uris")
+    fun getAll(): List<FileUri>
+}
+
+@Database(entities = [FileUri::class], version = 1)
+@TypeConverters(Converters::class)
+abstract class FileUriDatabase : RoomDatabase() {
+    abstract fun fileUriDao() : FileUriDao
+}

app/src/main/java/dev/patrickgold/florisboard/ime/core/FlorisActivity.kt

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.core
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
+import android.os.Bundle
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
+import androidx.viewbinding.ViewBinding
+import com.google.android.material.snackbar.Snackbar
+import dev.patrickgold.florisboard.R
+
+abstract class FlorisActivity<V : ViewBinding> : AppCompatActivity() {
+    private var _binding: V? = null
+    protected val binding: V
+        get() = _binding!!
+
+    private var _prefs: PrefHelper? = null
+    protected val prefs: PrefHelper
+        get() = _prefs!!
+
+    private var errorDialog: AlertDialog? = null
+    private var errorSnackbar: Snackbar? = null
+    private var errorThrowable: Throwable? = null
+    private var messageSnackbar: Snackbar? = null
+
+    protected abstract fun onCreateBinding(): V
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        _prefs = PrefHelper.getDefaultInstance(applicationContext)
+        onCreateBinding().let {
+            _binding = it
+            setContentView(it.root)
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
+        _prefs = null
+        errorDialog?.dismiss()
+        errorDialog = null
+        errorSnackbar?.dismiss()
+        errorSnackbar = null
+        errorThrowable = null
+        messageSnackbar?.dismiss()
+        messageSnackbar = null
+    }
+
+    protected fun showMessage(@StringRes snackbarMessageResId: Int) {
+        val snackbarMessage = resources.getString(snackbarMessageResId)
+        showMessage(snackbarMessage)
+    }
+
+    protected fun showMessage(snackbarMessage: String) {
+        messageSnackbar?.dismiss()
+        messageSnackbar = Snackbar.make(binding.root, snackbarMessage, Snackbar.LENGTH_LONG).apply {
+            setAction(android.R.string.ok) {
+                messageSnackbar?.dismiss()
+            }
+            show() }
+    }
+
+    protected fun showError(throwable: Throwable) {
+        val snackbarMessage = resources.getString(R.string.assets__error__snackbar_message)
+        showError(snackbarMessage, throwable)
+    }
+
+    protected fun showError(@StringRes snackbarMessageResId: Int, throwable: Throwable) {
+        val snackbarMessage = resources.getString(snackbarMessageResId)
+        showError(snackbarMessage, throwable)
+    }
+
+    protected fun showError(snackbarMessage: String, throwable: Throwable) {
+        errorDialog?.dismiss()
+        errorDialog = null
+        errorSnackbar?.dismiss()
+        errorSnackbar = Snackbar.make(binding.root, snackbarMessage, Snackbar.LENGTH_LONG).apply {
+            setAction(R.string.assets__error__details) {
+                errorDialog?.dismiss()
+                errorDialog = AlertDialog.Builder(this@FlorisActivity).run {
+                    setTitle(R.string.assets__error__details)
+                    setMessage(errorThrowable.toString())
+                    setPositiveButton(android.R.string.ok, null)
+                    setNeutralButton(R.string.crash_dialog__copy_to_clipboard) { _, _ ->
+                        val clipboardManager = getSystemService(Context.CLIPBOARD_SERVICE)
+                        if (clipboardManager != null && clipboardManager is ClipboardManager) {
+                            clipboardManager.setPrimaryClip(ClipData.newPlainText(errorThrowable.toString(), errorThrowable.toString()))
+                        }
+                    }
+                    create()
+                    show()
+                }
+            }
+            show()
+        }
+        errorThrowable = throwable
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/core/FlorisApplication.kt

@@ -19,6 +19,7 @@ package dev.patrickgold.florisboard.ime.core
 import android.app.Application
 import dev.patrickgold.florisboard.BuildConfig
 import dev.patrickgold.florisboard.crashutility.CrashUtility
+import dev.patrickgold.florisboard.ime.dictionary.DictionaryManager
 import dev.patrickgold.florisboard.ime.extension.AssetManager
 import dev.patrickgold.florisboard.ime.theme.ThemeManager
 import timber.log.Timber
@@ -32,6 +33,7 @@ class FlorisApplication : Application() {
         CrashUtility.install(this)
         val prefHelper = PrefHelper.getDefaultInstance(this)
         val assetManager = AssetManager.init(this)
+        DictionaryManager.init(this)
         ThemeManager.init(this, assetManager, prefHelper)
         prefHelper.initDefaultPreferences()
     }

app/src/main/java/dev/patrickgold/florisboard/ime/core/FlorisBoard.kt

@@ -17,26 +17,35 @@
 package dev.patrickgold.florisboard.ime.core
 
 import android.annotation.SuppressLint
-import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
-import android.content.res.ColorStateList
 import android.content.res.Configuration
 import android.graphics.Color
+import android.inputmethodservice.ExtractEditText
 import android.inputmethodservice.InputMethodService
 import android.media.AudioManager
-import android.os.*
+import android.os.Build
+import android.os.Handler
+import android.os.VibrationEffect
+import android.os.Vibrator
 import android.provider.Settings
-import android.view.Gravity
-import android.view.View
-import android.view.WindowManager
+import android.view.*
 import android.view.inputmethod.EditorInfo
 import android.view.inputmethod.InputConnection
 import android.view.inputmethod.InputMethodManager
+import android.widget.Button
+import android.widget.FrameLayout
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.drawable.DrawableCompat
+import androidx.lifecycle.*
 import com.squareup.moshi.Json
 import dev.patrickgold.florisboard.BuildConfig
 import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.clip.ClipboardInputManager
+import dev.patrickgold.florisboard.ime.clip.FlorisClipboardManager
+import dev.patrickgold.florisboard.ime.landscapeinput.LandscapeInputUiMode
 import dev.patrickgold.florisboard.ime.media.MediaInputManager
+import dev.patrickgold.florisboard.ime.onehanded.OneHandedMode
 import dev.patrickgold.florisboard.ime.popup.PopupLayerView
 import dev.patrickgold.florisboard.ime.text.TextInputManager
 import dev.patrickgold.florisboard.ime.text.gestures.SwipeAction
@@ -45,10 +54,14 @@ import dev.patrickgold.florisboard.ime.text.key.KeyData
 import dev.patrickgold.florisboard.ime.text.keyboard.KeyboardMode
 import dev.patrickgold.florisboard.ime.theme.Theme
 import dev.patrickgold.florisboard.ime.theme.ThemeManager
-import dev.patrickgold.florisboard.settings.SettingsMainActivity
+import dev.patrickgold.florisboard.setup.SetupActivity
 import dev.patrickgold.florisboard.util.*
 import timber.log.Timber
 import java.lang.ref.WeakReference
+import java.util.concurrent.CopyOnWriteArrayList
+import java.util.concurrent.Executor
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
 
 /**
  * Variable which holds the current [FlorisBoard] instance. To get this instance from another
@@ -60,27 +73,42 @@ private var florisboardInstance: FlorisBoard? = null
  * Core class responsible to link together both the text and media input managers as well as
  * managing the one-handed UI.
  */
-class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedListener,
+class FlorisBoard : InputMethodService(), LifecycleOwner, FlorisClipboardManager.OnPrimaryClipChangedListener,
     ThemeManager.OnThemeUpdatedListener {
+
     lateinit var prefs: PrefHelper
         private set
 
     val context: Context
         get() = inputWindowView?.context ?: this
+    private val serviceLifecycleDispatcher: ServiceLifecycleDispatcher = ServiceLifecycleDispatcher(this)
+
+    private var extractEditLayout: WeakReference<ViewGroup?> = WeakReference(null)
     var inputView: InputView? = null
         private set
+    private var inputWindowView: InputWindowView? = null
     var popupLayerView: PopupLayerView? = null
         private set
-    private var inputWindowView: InputWindowView? = null
-    private var eventListeners: MutableList<WeakReference<EventListener?>?> = mutableListOf()
+    private var eventListeners: CopyOnWriteArrayList<EventListener> = CopyOnWriteArrayList()
 
     private var audioManager: AudioManager? = null
-    private var imeManager:InputMethodManager? = null
-    var clipboardManager: ClipboardManager? = null
+    var imeManager:InputMethodManager? = null
+    var florisClipboardManager: FlorisClipboardManager? = null
     private val themeManager: ThemeManager = ThemeManager.default()
     private var vibrator: Vibrator? = null
     private val osHandler = Handler()
 
+    private var internalBatchNestingLevel: Int = 0
+    private val internalSelectionCache = object {
+        var selectionCatchCount: Int = 0
+        var oldSelStart: Int = -1
+        var oldSelEnd: Int = -1
+        var newSelStart: Int = -1
+        var newSelEnd: Int = -1
+        var candidatesStart: Int = -1
+        var candidatesEnd: Int = -1
+    }
+
     var activeEditorInstance: EditorInstance = EditorInstance.default()
 
     lateinit var subtypeManager: SubtypeManager
@@ -88,31 +116,42 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
     private var currentThemeIsNight: Boolean = false
     private var currentThemeResId: Int = 0
     private var isNumberRowVisible: Boolean = false
+    private var isWindowShown: Boolean = false
 
     val textInputManager: TextInputManager
     val mediaInputManager: MediaInputManager
+    val clipInputManager: ClipboardInputManager
+
+    var isClipboardContextMenuShown = false
 
     init {
         florisboardInstance = this
 
         textInputManager = TextInputManager.getInstance()
         mediaInputManager = MediaInputManager.getInstance()
+        clipInputManager = ClipboardInputManager.getInstance()
     }
 
+    lateinit var asyncExecutor: ExecutorService
+
     companion object {
         private const val IME_ID: String = "dev.patrickgold.florisboard/.ime.core.FlorisBoard"
+        private const val IME_ID_BETA: String = "dev.patrickgold.florisboard.beta/dev.patrickgold.florisboard.ime.core.FlorisBoard"
         private const val IME_ID_DEBUG: String = "dev.patrickgold.florisboard.debug/dev.patrickgold.florisboard.ime.core.FlorisBoard"
 
         fun checkIfImeIsEnabled(context: Context): Boolean {
             val activeImeIds = Settings.Secure.getString(
                 context.contentResolver,
                 Settings.Secure.ENABLED_INPUT_METHODS
-            )
+            ) ?: "(none)"
             Timber.i("List of active IMEs: $activeImeIds")
             return when {
                 BuildConfig.DEBUG -> {
                     activeImeIds.split(":").contains(IME_ID_DEBUG)
                 }
+                context.packageName.endsWith(".beta") -> {
+                    activeImeIds.split(":").contains(IME_ID_BETA)
+                }
                 else -> {
                     activeImeIds.split(":").contains(IME_ID)
                 }
@@ -123,12 +162,15 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
             val selectedImeId = Settings.Secure.getString(
                 context.contentResolver,
                 Settings.Secure.DEFAULT_INPUT_METHOD
-            )
+            ) ?: "(none)"
             Timber.i("Selected IME: $selectedImeId")
             return when {
                 BuildConfig.DEBUG -> {
                     selectedImeId == IME_ID_DEBUG
                 }
+                context.packageName.endsWith(".beta") -> {
+                    selectedImeId.split(":").contains(IME_ID_BETA)
+                }
                 else -> {
                     selectedImeId == IME_ID
                 }
@@ -153,8 +195,12 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         }
     }
 
+    override fun getLifecycle(): Lifecycle {
+        return serviceLifecycleDispatcher.lifecycle
+    }
+
     override fun onCreate() {
-        if (BuildConfig.DEBUG) {
+        /*if (BuildConfig.DEBUG) {
             StrictMode.setThreadPolicy(
                 StrictMode.ThreadPolicy.Builder()
                     .detectDiskReads()
@@ -171,14 +217,13 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
                     .penaltyDeath()
                     .build()
             )
-        }
+        }*/
         Timber.i("onCreate()")
+        serviceLifecycleDispatcher.onServicePreSuperOnCreate()
 
-        imeManager = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
-        audioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager
-        clipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
-        clipboardManager?.addPrimaryClipChangedListener(this)
-        vibrator = context.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
+        imeManager = getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
+        audioManager = getSystemService(Context.AUDIO_SERVICE) as? AudioManager
+        vibrator = context.getSystemService(Context.VIBRATOR_SERVICE) as? Vibrator
         prefs = PrefHelper.getDefaultInstance(this)
         prefs.initDefaultPreferences()
         prefs.sync()
@@ -193,8 +238,13 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
 
         AppVersionUtils.updateVersionOnInstallAndLastUse(this, prefs)
 
+        asyncExecutor = Executors.newSingleThreadExecutor()
+        florisClipboardManager = FlorisClipboardManager.getInstance()
+        florisClipboardManager!!.initialize(context)
+        florisClipboardManager?.addPrimaryClipChangedListener(this)
+
         super.onCreate()
-        eventListeners.toList().forEach { it?.get()?.onCreate() }
+        eventListeners.toList().forEach { it?.onCreate() }
     }
 
     @SuppressLint("InflateParams")
@@ -203,45 +253,108 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
 
         baseContext.setTheme(currentThemeResId)
 
-        inputWindowView = layoutInflater.inflate(R.layout.florisboard, null) as InputWindowView
-        popupLayerView = inputWindowView?.findViewById(R.id.popup_layer)
+        inputWindowView = layoutInflater.inflate(R.layout.florisboard, null) as? InputWindowView
+        inputWindowView?.isHapticFeedbackEnabled = true
 
-        eventListeners.toList().forEach { it?.get()?.onCreateInputView() }
+        eventListeners.toList().forEach { it?.onCreateInputView() }
 
         return inputWindowView
     }
 
-    fun registerInputView(inputView: InputView) {
-        Timber.i("registerInputView($inputView)")
+    /**
+     * Disable the default candidates view.
+     */
+    override fun onCreateCandidatesView(): View? {
+        return null
+    }
 
-        this.inputView = inputView
-        initializeOneHandedEnvironment()
-        updateSoftInputWindowLayoutParameters()
-        updateOneHandedPanelVisibility()
-        themeManager.notifyCallbackReceivers()
-        setActiveInput(R.id.text_input)
-
-        eventListeners.toList().forEach { it?.get()?.onRegisterInputView(inputView) }
+    @SuppressLint("InflateParams")
+    override fun onCreateExtractTextView(): View? {
+        val eel = super.onCreateExtractTextView()
+        if (eel !is ViewGroup) {
+            return null
+        }
+        extractEditLayout = WeakReference(eel)
+        eel.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
+            override fun onGlobalLayout() {
+                extractEditLayout.get()?.let { eel ->
+                    eel.viewTreeObserver.removeOnGlobalLayoutListener(this)
+                    eel.layoutParams = FrameLayout.LayoutParams(
+                        FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT
+                    ).also {
+                        it.setMargins(0, 0, 0, 0)
+                    }
+                }
+            }
+        })
+        return eel
     }
 
     override fun onDestroy() {
         Timber.i("onDestroy()")
 
         themeManager.unregisterOnThemeUpdatedListener(this)
-        clipboardManager?.removePrimaryClipChangedListener(this)
+        florisClipboardManager!!.removePrimaryClipChangedListener(this)
+        florisClipboardManager!!.close()
         osHandler.removeCallbacksAndMessages(null)
         florisboardInstance = null
 
-        eventListeners.toList().forEach { it?.get()?.onDestroy() }
+        serviceLifecycleDispatcher.onServicePreSuperOnDestroy()
+
+        eventListeners.toList().forEach { it?.onDestroy() }
         eventListeners.clear()
         super.onDestroy()
     }
 
+    override fun onEvaluateFullscreenMode(): Boolean {
+        return resources?.configuration?.let { config ->
+            if (config.orientation != Configuration.ORIENTATION_LANDSCAPE) {
+                false
+            } else {
+                when (prefs.keyboard.landscapeInputUiMode) {
+                    LandscapeInputUiMode.DYNAMICALLY_SHOW -> !activeEditorInstance.imeOptions.flagNoFullscreen && !activeEditorInstance.imeOptions.flagNoExtractUi
+                    LandscapeInputUiMode.NEVER_SHOW -> false
+                    LandscapeInputUiMode.ALWAYS_SHOW -> true
+                }
+            }
+        } ?: false
+    }
+
+    override fun updateFullscreenMode() {
+        super.updateFullscreenMode()
+        updateSoftInputWindowLayoutParameters()
+    }
+
+    override fun onUpdateExtractingVisibility(ei: EditorInfo?) {
+        isExtractViewShown = !activeEditorInstance.isRawInputEditor && when (prefs.keyboard.landscapeInputUiMode) {
+            LandscapeInputUiMode.DYNAMICALLY_SHOW -> !activeEditorInstance.imeOptions.flagNoExtractUi
+            LandscapeInputUiMode.NEVER_SHOW -> false
+            LandscapeInputUiMode.ALWAYS_SHOW -> true
+        }
+    }
+
+    fun registerInputView(inputView: InputView) {
+        Timber.i("registerInputView($inputView)")
+
+        window?.window?.findViewById<View>(android.R.id.content)?.let { content ->
+            popupLayerView = PopupLayerView(content.context)
+            if (content is ViewGroup) {
+                content.addView(popupLayerView)
+            }
+        }
+        this.inputView = inputView
+        updateSoftInputWindowLayoutParameters()
+        updateOneHandedPanelVisibility()
+        themeManager.notifyCallbackReceivers()
+        setActiveInput(R.id.text_input)
+
+        eventListeners.toList().forEach { it?.onRegisterInputView(inputView) }
+    }
+
     override fun onStartInput(attribute: EditorInfo?, restarting: Boolean) {
         Timber.i("onStartInput($attribute, $restarting)")
-
         super.onStartInput(attribute, restarting)
-        currentInputConnection?.requestCursorUpdates(InputConnection.CURSOR_UPDATE_IMMEDIATE)
+        currentInputConnection?.requestCursorUpdates(InputConnection.CURSOR_UPDATE_MONITOR)
     }
 
     override fun onStartInputView(info: EditorInfo?, restarting: Boolean) {
@@ -252,7 +365,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         activeEditorInstance = EditorInstance.from(info, this)
         themeManager.updateRemoteColorValues(activeEditorInstance.packageName)
         eventListeners.toList().forEach {
-            it?.get()?.onStartInputView(activeEditorInstance, restarting)
+            it?.onStartInputView(activeEditorInstance, restarting)
         }
     }
 
@@ -264,7 +377,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         }
 
         super.onFinishInputView(finishingInput)
-        eventListeners.toList().forEach { it?.get()?.onFinishInputView(finishingInput) }
+        eventListeners.toList().forEach { it?.onFinishInputView(finishingInput) }
     }
 
     override fun onFinishInput() {
@@ -275,7 +388,13 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
     }
 
     override fun onWindowShown() {
-        Timber.i("onWindowShown()")
+        if (isWindowShown) {
+            Timber.i("Ignoring onWindowShown()")
+            return
+        } else {
+            Timber.i("onWindowShown()")
+        }
+        isWindowShown = true
 
         prefs.sync()
         val newIsNumberRowVisible = prefs.keyboard.numberRow
@@ -290,14 +409,20 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         setActiveInput(R.id.text_input)
 
         super.onWindowShown()
-        eventListeners.toList().forEach { it?.get()?.onWindowShown() }
+        eventListeners.toList().forEach { it?.onWindowShown() }
     }
 
     override fun onWindowHidden() {
-        Timber.i("onWindowHidden()")
+        if (!isWindowShown) {
+            Timber.i("Ignoring onWindowHidden()")
+            return
+        } else {
+            Timber.i("onWindowHidden()")
+        }
+        isWindowShown = false
 
         super.onWindowHidden()
-        eventListeners.toList().forEach { it?.get()?.onWindowHidden() }
+        eventListeners.toList().forEach { it?.onWindowHidden() }
     }
 
     override fun onConfigurationChanged(newConfig: Configuration) {
@@ -309,23 +434,74 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         super.onConfigurationChanged(newConfig)
     }
 
+    /**
+     * Begins a FlorisBoard internal batch edit. This enables the application to continue sending selection updates
+     * (some apps need to to this else they absolutely refuse to give visual feedback on cursor movement etc.). The
+     * selection update is then caught if [internalBatchNestingLevel] is greater than 0, thus not delegating the
+     * update to the editor instance. This is needed because else the UI stutters when too many updates arrive in a
+     * row.
+     */
+    fun beginInternalBatchEdit() {
+        internalBatchNestingLevel++
+    }
+
+    /**
+     * Ends an internal batch edit, if [internalBatchNestingLevel] is <= 1 and calls [onUpdateSelection] with the
+     * corresponding reported selection values. This call is not caught and the editor instance and other classes are
+     * able to update the UI. Resets the internal selection cache and is ready for the next batch edit.
+     */
+    fun endInternalBatchEdit() {
+        internalBatchNestingLevel = (internalBatchNestingLevel - 1).coerceAtLeast(0)
+        if (internalBatchNestingLevel == 0) {
+            internalSelectionCache.apply {
+                if (selectionCatchCount > 0) {
+                    onUpdateSelection(
+                        oldSelStart, oldSelEnd,
+                        newSelStart, newSelEnd,
+                        candidatesStart, candidatesEnd
+                    )
+                    selectionCatchCount = 0
+                    oldSelStart = -1
+                    oldSelEnd = -1
+                    newSelStart = -1
+                    newSelEnd = -1
+                    candidatesStart = -1
+                    candidatesEnd = -1
+                }
+            }
+        }
+    }
+
     override fun onUpdateSelection(
         oldSelStart: Int, oldSelEnd: Int,
         newSelStart: Int, newSelEnd: Int,
         candidatesStart: Int, candidatesEnd: Int
     ) {
-        Timber.i("onUpdateSelection($oldSelStart, $oldSelEnd, $newSelStart, $newSelEnd, $candidatesStart, $candidatesEnd)")
-
         super.onUpdateSelection(
             oldSelStart, oldSelEnd,
             newSelStart, newSelEnd,
             candidatesStart, candidatesEnd
         )
-        activeEditorInstance.onUpdateSelection(
-            oldSelStart, oldSelEnd,
-            newSelStart, newSelEnd
-        )
-        eventListeners.toList().forEach { it?.get()?.onUpdateSelection() }
+
+        if (internalBatchNestingLevel == 0) {
+            Timber.i("onUpdateSelection($oldSelStart, $oldSelEnd, $newSelStart, $newSelEnd, $candidatesStart, $candidatesEnd)")
+            activeEditorInstance.onUpdateSelection(
+                oldSelStart, oldSelEnd,
+                newSelStart, newSelEnd,
+                candidatesStart, candidatesEnd
+            )
+            eventListeners.toList().forEach { it?.onUpdateSelection() }
+        } else {
+            Timber.i("onUpdateSelection($oldSelStart, $oldSelEnd, $newSelStart, $newSelEnd, $candidatesStart, $candidatesEnd): caught due to internal batch level of $internalBatchNestingLevel!")
+            if (internalSelectionCache.selectionCatchCount++ == 0) {
+                internalSelectionCache.oldSelStart = oldSelStart
+                internalSelectionCache.oldSelEnd = oldSelEnd
+            }
+            internalSelectionCache.newSelStart = newSelStart
+            internalSelectionCache.newSelEnd = newSelEnd
+            internalSelectionCache.candidatesStart = candidatesStart
+            internalSelectionCache.candidatesEnd = candidatesEnd
+        }
     }
 
     override fun onThemeUpdated(theme: Theme) {
@@ -367,15 +543,36 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
 
         // Update InputView theme
         inputView?.setBackgroundColor(theme.getAttr(Theme.Attr.KEYBOARD_BACKGROUND).toSolidColor().color)
-        inputView?.oneHandedCtrlPanelStart?.setBackgroundColor(theme.getAttr(Theme.Attr.ONE_HANDED_BACKGROUND).toSolidColor().color)
-        inputView?.oneHandedCtrlPanelEnd?.setBackgroundColor(theme.getAttr(Theme.Attr.ONE_HANDED_BACKGROUND).toSolidColor().color)
-        ColorStateList.valueOf(theme.getAttr(Theme.Attr.ONE_HANDED_FOREGROUND).toSolidColor().color).also {
-            inputView?.oneHandedCtrlMoveStart?.imageTintList = it
-            inputView?.oneHandedCtrlMoveEnd?.imageTintList = it
-            inputView?.oneHandedCtrlCloseStart?.imageTintList = it
-            inputView?.oneHandedCtrlCloseEnd?.imageTintList = it
+        inputView?.invalidate()
+
+        // Update ExtractTextView theme and attributes
+        extractEditLayout.get()?.let { eel ->
+            val p = resources.getDimension(R.dimen.landscapeInputUi_padding).toInt()
+            eel.setPadding(p, p, 0, p)
+            eel.setBackgroundColor(theme.getAttr(Theme.Attr.EXTRACT_EDIT_LAYOUT_BACKGROUND).toSolidColor().color)
+            eel.findViewById<ExtractEditText>(android.R.id.inputExtractEditText)?.let { eet ->
+                val p2 = resources.getDimension(R.dimen.landscapeInputUi_editText_padding).toInt()
+                eet.setPadding(p2, p2, p2, p2)
+                eet.background = ContextCompat.getDrawable(this, R.drawable.edit_text_background)?.also { d ->
+                    DrawableCompat.setTint(d, theme.getAttr(Theme.Attr.WINDOW_COLOR_PRIMARY).toSolidColor().color)
+                }
+                eet.setTextColor(theme.getAttr(Theme.Attr.EXTRACT_EDIT_LAYOUT_FOREGROUND).toSolidColor().color)
+                eet.setHintTextColor(theme.getAttr(Theme.Attr.EXTRACT_EDIT_LAYOUT_FOREGROUND_ALT).toSolidColor().color)
+                eet.highlightColor = theme.getAttr(Theme.Attr.WINDOW_COLOR_PRIMARY).toSolidColor().color
+            }
+            eel.findViewWithType(FrameLayout::class)?.let { fra ->
+                fra.background = null
+            }
+            eel.findViewWithType(Button::class)?.let { btn ->
+                btn.background = ContextCompat.getDrawable(this, R.drawable.shape_rect_rounded)?.also { d ->
+                    DrawableCompat.setTint(d, theme.getAttr(Theme.Attr.EXTRACT_ACTION_BUTTON_BACKGROUND).toSolidColor().color)
+                }
+                btn.setTextColor(theme.getAttr(Theme.Attr.EXTRACT_ACTION_BUTTON_FOREGROUND).toSolidColor().color)
+            }
+            eel.invalidate()
         }
-        eventListeners.toList().forEach { it?.get()?.onApplyThemeAttributes() }
+
+        eventListeners.toList().forEach { it?.onApplyThemeAttributes() }
     }
 
     override fun onComputeInsets(outInsets: Insets?) {
@@ -383,6 +580,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         val inputView = this.inputView ?: return
         val inputWindowView = this.inputWindowView ?: return
         // TODO: Check also if the keyboard is currently suppressed by a hardware keyboard
+
         if (!isInputViewShown) {
             outInsets?.contentTopInsets = inputWindowView.height
             outInsets?.visibleTopInsets = inputWindowView.height
@@ -391,11 +589,11 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         val visibleTopY = inputWindowView.height - inputView.measuredHeight
         outInsets?.contentTopInsets = visibleTopY
         outInsets?.visibleTopInsets = visibleTopY
-    }
 
-    override fun updateFullscreenMode() {
-        super.updateFullscreenMode()
-        updateSoftInputWindowLayoutParameters()
+        if (isClipboardContextMenuShown) {
+            outInsets?.touchableInsets = Insets.TOUCHABLE_INSETS_FRAME
+            outInsets?.touchableRegion?.setEmpty()
+        }
     }
 
     /**
@@ -425,7 +623,12 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         if (prefs.keyboard.vibrationEnabled) {
             var vibrationStrength = prefs.keyboard.vibrationStrength
             if (vibrationStrength == -1 && prefs.keyboard.vibrationEnabledSystem) {
-                vibrationStrength = 36
+                val hapticsPerformed =
+                    inputWindowView?.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
+
+                if (hapticsPerformed == false) {
+                    vibrationStrength = 36
+                }
             }
             if (vibrationStrength > 0) {
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
@@ -477,15 +680,15 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
     }
 
     /**
-     * Hides the IME and launches [SettingsMainActivity].
+     * Hides the IME and launches [SetupActivity].
      */
     fun launchSettings() {
         requestHideSelf(0)
-        val i = Intent(this, SettingsMainActivity::class.java)
+        val i = Intent(this, SetupActivity::class.java)
         i.flags = Intent.FLAG_ACTIVITY_NEW_TASK or
                   Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED or
                   Intent.FLAG_ACTIVITY_CLEAR_TOP
-        startActivity(i)
+        applicationContext.startActivity(i)
     }
 
     /**
@@ -501,6 +704,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
                 switchToPreviousInputMethod()
             } else {
                 window.window?.let { window ->
+                    @Suppress("DEPRECATION")
                     imeManager?.switchToLastInputMethod(window.attributes.token)
                 }
             }
@@ -510,6 +714,22 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         }
     }
 
+    fun switchToNextKeyboard(){
+        try {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                switchToNextInputMethod(false)
+            } else {
+                window.window?.let { window ->
+                    @Suppress("DEPRECATION")
+                    imeManager?.switchToNextInputMethod(window.attributes.token, false)
+                }
+            }
+        } catch (e: Exception) {
+            Timber.e(e,"Unable to switch to the next IME")
+            imeManager?.showInputMethodPicker()
+        }
+    }
+
     fun switchToPrevSubtype() {
         activeSubtype = subtypeManager.switchToPrevSubtype() ?: Subtype.DEFAULT
         onSubtypeChanged(activeSubtype)
@@ -523,71 +743,47 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
     private fun onSubtypeChanged(newSubtype: Subtype) {
         textInputManager.onSubtypeChanged(newSubtype)
         mediaInputManager.onSubtypeChanged(newSubtype)
+        clipInputManager.onSubtypeChanged(newSubtype)
     }
 
     fun setActiveInput(type: Int) {
         when (type) {
             R.id.text_input -> {
                 inputView?.mainViewFlipper?.displayedChild = 0
+                textInputManager.inputEventDispatcher.send(InputKeyEvent.downUp(KeyData.VIEW_CHARACTERS))
             }
             R.id.media_input -> {
                 inputView?.mainViewFlipper?.displayedChild = 1
             }
+            R.id.clip_input -> {
+                inputView?.mainViewFlipper?.displayedChild = 2
+            }
         }
     }
 
-    private fun initializeOneHandedEnvironment() {
-        { v:View -> onOneHandedPanelButtonClick(v) }.also {
-            inputView?.oneHandedCtrlMoveStart?.setOnClickListener(it)
-            inputView?.oneHandedCtrlMoveEnd?.setOnClickListener(it)
-            inputView?.oneHandedCtrlCloseStart?.setOnClickListener(it)
-            inputView?.oneHandedCtrlCloseEnd?.setOnClickListener(it)
-        }
-    }
-
-    private fun onOneHandedPanelButtonClick(v: View) {
-        when (v.id) {
-            R.id.one_handed_ctrl_move_start -> {
-                prefs.keyboard.oneHandedMode = "start"
-            }
-            R.id.one_handed_ctrl_move_end -> {
-                prefs.keyboard.oneHandedMode = "end"
-            }
-            R.id.one_handed_ctrl_close_start,
-            R.id.one_handed_ctrl_close_end -> {
-                prefs.keyboard.oneHandedMode = "off"
-            }
+    fun toggleOneHandedMode(isRight: Boolean) {
+        prefs.keyboard.oneHandedMode = when (prefs.keyboard.oneHandedMode) {
+            OneHandedMode.OFF -> if (isRight) { OneHandedMode.END } else { OneHandedMode.START }
+            else -> OneHandedMode.OFF
         }
         updateOneHandedPanelVisibility()
     }
 
-    fun toggleOneHandedMode() {
-        when (prefs.keyboard.oneHandedMode) {
-            "off" -> {
-                prefs.keyboard.oneHandedMode = "end"
-            }
-            else -> {
-                prefs.keyboard.oneHandedMode = "off"
-            }
-        }
-        updateOneHandedPanelVisibility()
-    }
-
-    private fun updateOneHandedPanelVisibility() {
+    fun updateOneHandedPanelVisibility() {
         if (resources.configuration.orientation != Configuration.ORIENTATION_PORTRAIT) {
             inputView?.oneHandedCtrlPanelStart?.visibility = View.GONE
             inputView?.oneHandedCtrlPanelEnd?.visibility = View.GONE
         } else {
             when (prefs.keyboard.oneHandedMode) {
-                "off" -> {
+                OneHandedMode.OFF -> {
                     inputView?.oneHandedCtrlPanelStart?.visibility = View.GONE
                     inputView?.oneHandedCtrlPanelEnd?.visibility = View.GONE
                 }
-                "start" -> {
+                OneHandedMode.START -> {
                     inputView?.oneHandedCtrlPanelStart?.visibility = View.GONE
                     inputView?.oneHandedCtrlPanelEnd?.visibility = View.VISIBLE
                 }
-                "end" -> {
+                OneHandedMode.END -> {
                     inputView?.oneHandedCtrlPanelStart?.visibility = View.VISIBLE
                     inputView?.oneHandedCtrlPanelEnd?.visibility = View.GONE
                 }
@@ -600,7 +796,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
     }
 
     override fun onPrimaryClipChanged() {
-        eventListeners.toList().forEach { it?.get()?.onPrimaryClipChanged() }
+        eventListeners.toList().forEach { it?.onPrimaryClipChanged() }
     }
 
     /**
@@ -610,7 +806,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
      * @return True if the listener has been added successfully, false otherwise.
      */
     fun addEventListener(listener: EventListener): Boolean {
-        return eventListeners.add(WeakReference(listener))
+        return eventListeners.add(listener)
     }
 
     /**
@@ -623,12 +819,7 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
      *  value may also indicate that the [listener] was not added previously.
      */
     fun removeEventListener(listener: EventListener): Boolean {
-        eventListeners.toList().forEach {
-            if (it?.get() == listener) {
-                return eventListeners.remove(it)
-            }
-        }
-        return false
+        return eventListeners.remove(listener)
     }
 
     interface EventListener {
@@ -673,14 +864,21 @@ class FlorisBoard : InputMethodService(), ClipboardManager.OnPrimaryClipChangedL
         val defaultSubtypesLanguageNames: List<String>
 
         init {
-            val tmpCodes = mutableListOf<String>()
-            val tmpNames = mutableListOf<String>()
+            val tmpList = mutableListOf<Pair<String, String>>()
             for (defaultSubtype in defaultSubtypes) {
-                tmpCodes.add(defaultSubtype.locale.toString())
-                tmpNames.add(defaultSubtype.locale.displayName)
+                tmpList.add(Pair(defaultSubtype.locale.toString(), defaultSubtype.locale.displayName))
             }
-            defaultSubtypesLanguageCodes = tmpCodes.toList()
-            defaultSubtypesLanguageNames = tmpNames.toList()
+            // Sort language list alphabetically by the display name of a language
+            tmpList.sortBy { it.second }
+            // Move selected English variants to the top of the list
+            for (languageCode in listOf("en_CA", "en_AU", "en_UK", "en_US")) {
+                val index: Int = tmpList.indexOfFirst { it.first == languageCode }
+                if (index > 0) {
+                    tmpList.add(0, tmpList.removeAt(index))
+                }
+            }
+            defaultSubtypesLanguageCodes = tmpList.map { it.first }.toList()
+            defaultSubtypesLanguageNames = tmpList.map { it.second }.toList()
         }
     }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/core/FlorisViewFlipper.kt

@@ -19,7 +19,6 @@ package dev.patrickgold.florisboard.ime.core
 import android.content.Context
 import android.util.AttributeSet
 import android.widget.ViewFlipper
-import java.lang.IllegalArgumentException
 
 /**
  * Custom ViewFlipper class used to prevent an unnecessary exception to be thrown when it is

app/src/main/java/dev/patrickgold/florisboard/ime/core/InputEventDispatcher.kt

@@ -0,0 +1,373 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.core
+
+import android.os.SystemClock
+import dev.patrickgold.florisboard.BuildConfig
+import dev.patrickgold.florisboard.ime.text.key.KeyCode
+import dev.patrickgold.florisboard.ime.text.key.KeyData
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import timber.log.Timber
+
+/**
+ * The main logic point of processing input events and delegating them to the registered event receivers. Currently,
+ * only [InputKeyEvent]s are supported, but in the future this class is thought to be the single point where input
+ * events can be dispatched.
+ */
+class InputEventDispatcher private constructor(
+    parentScope: CoroutineScope,
+    channelCapacity: Int,
+    private val mainDispatcher: CoroutineDispatcher,
+    private val defaultDispatcher: CoroutineDispatcher,
+    private val repeatableKeyCodes: IntArray
+) : InputKeyEventSender {
+    private val channel: Channel<InputKeyEvent> = Channel(channelCapacity)
+    private val scope: CoroutineScope = CoroutineScope(parentScope.coroutineContext)
+    private val pressedKeys: HashMap<Int, PressedKeyInfo> = hashMapOf()
+    var lastKeyEventDown: InputKeyEvent? = null
+        private set
+    var lastKeyEventUp: InputKeyEvent? = null
+        private set
+
+    /**
+     * The input key event register. If null, the dispatcher will still process input, but won't dispatch them to an
+     * event receiver.
+     */
+    var keyEventReceiver: InputKeyEventReceiver? = null
+
+    companion object {
+        /**
+         * The default input event channel capacity to be used in [new].
+         */
+        private const val DEFAULT_CHANNEL_CAPACITY: Int = 32
+
+        /**
+         * Creates a new [InputEventDispatcher] instance from given arguments and returns it.
+         *
+         * @param parentScope The parent coroutine scope which this dispatcher will attach its own scope to.
+         * @param channelCapacity The capacity of this input channel, defaults to [DEFAULT_CHANNEL_CAPACITY].
+         * @param mainDispatcher The main dispatcher used to switch the context to call the receiver callbacks.
+         *  Defaults to [Dispatchers.Main].
+         * @param defaultDispatcher The default dispatcher used to switch the context to call the receiver callbacks.
+         *  Defaults to [Dispatchers.Default].
+         * @param repeatableKeyCodes An int array of all key codes which are repeatable while being pressed down.
+         *
+         * @return A new [InputEventDispatcher] instance initialized with given arguments.
+         */
+        fun new(
+            parentScope: CoroutineScope,
+            channelCapacity: Int = DEFAULT_CHANNEL_CAPACITY,
+            mainDispatcher: CoroutineDispatcher = Dispatchers.Main,
+            defaultDispatcher: CoroutineDispatcher = Dispatchers.Default,
+            repeatableKeyCodes: IntArray = intArrayOf()
+        ): InputEventDispatcher = InputEventDispatcher(
+            parentScope, channelCapacity, mainDispatcher, defaultDispatcher, repeatableKeyCodes.clone()
+        )
+    }
+
+    init {
+        scope.launch(defaultDispatcher) {
+            for (ev in channel) {
+                if (!isActive) break
+                val startTime = System.nanoTime()
+                if (BuildConfig.DEBUG) {
+                    Timber.d(ev.toString())
+                }
+                when (ev.action) {
+                    InputKeyEvent.Action.DOWN -> {
+                        if (pressedKeys.containsKey(ev.data.code)) continue
+                        pressedKeys[ev.data.code] = PressedKeyInfo(
+                            eventTimeDown = ev.eventTime,
+                            repeatKeyPressJob = if (!repeatableKeyCodes.contains(ev.data.code)) { null } else {
+                                scope.launch(defaultDispatcher) {
+                                    delay(600)
+                                    while (isActive) {
+                                        channel.send(InputKeyEvent.repeat(ev.data))
+                                        delay(50)
+                                    }
+                                }
+                            }
+                        )
+                        withContext(mainDispatcher) {
+                            keyEventReceiver?.onInputKeyDown(ev)
+                        }
+                        if (ev.data.code != KeyCode.INTERNAL_BATCH_EDIT) {
+                            lastKeyEventDown = ev
+                        }
+                    }
+                    InputKeyEvent.Action.DOWN_UP -> {
+                        pressedKeys.remove(ev.data.code)?.repeatKeyPressJob?.cancel()
+                        withContext(mainDispatcher) {
+                            keyEventReceiver?.onInputKeyDown(ev)
+                            keyEventReceiver?.onInputKeyUp(ev)
+                        }
+                        if (ev.data.code != KeyCode.INTERNAL_BATCH_EDIT) {
+                            lastKeyEventDown = ev
+                            lastKeyEventUp = ev
+                        }
+                    }
+                    InputKeyEvent.Action.UP -> {
+                        pressedKeys.remove(ev.data.code)?.repeatKeyPressJob?.cancel()
+                        withContext(mainDispatcher) {
+                            keyEventReceiver?.onInputKeyUp(ev)
+                        }
+                        if (ev.data.code != KeyCode.INTERNAL_BATCH_EDIT) {
+                            lastKeyEventUp = ev
+                        }
+                    }
+                    InputKeyEvent.Action.REPEAT -> {
+                        if (pressedKeys.containsKey(ev.data.code)) {
+                            withContext(mainDispatcher) {
+                                keyEventReceiver?.onInputKeyRepeat(ev)
+                            }
+                        }
+                    }
+                    InputKeyEvent.Action.CANCEL -> {
+                        pressedKeys.remove(ev.data.code)?.repeatKeyPressJob?.cancel()
+                        withContext(mainDispatcher) {
+                            keyEventReceiver?.onInputKeyCancel(ev)
+                        }
+                    }
+                }
+                if (BuildConfig.DEBUG) {
+                    Timber.d("Time elapsed: ${(System.nanoTime() - startTime) / 1_000_000}")
+                }
+            }
+            val pressedKeysIterator = pressedKeys.iterator()
+            while (pressedKeysIterator.hasNext()) {
+                pressedKeysIterator.next().value.repeatKeyPressJob?.cancel()
+                pressedKeysIterator.remove()
+            }
+        }
+    }
+
+    override fun send(ev: InputKeyEvent) {
+        scope.launch(mainDispatcher) {
+            channel.send(ev)
+        }
+    }
+
+    /**
+     * Checks if there's currently a key down with given [code].
+     *
+     * @param code The key code to check for.
+     *
+     * @return True if the given [code] is currently down, false otherwise.
+     */
+    fun isPressed(code: Int): Boolean {
+        return pressedKeys.containsKey(code)
+    }
+
+    /**
+     * Closes this dispatcher and cancels the local coroutine scope.
+     */
+    fun close() {
+        keyEventReceiver = null
+        scope.cancel()
+    }
+
+    data class PressedKeyInfo(
+        val eventTimeDown: Long,
+        val repeatKeyPressJob: Job?
+    )
+}
+
+/**
+ * Data class representing a single input key event.
+ *
+ * @property eventTime The exact event time when this event occurred, measured in milliseconds since a static point in
+ *  the past. The exact point is irrelevant, but while this input dispatcher is active, the point must not change in
+ *  order for difference time calculation to succeed.
+ * @property action The action of this event.
+ * @property data The data of this event.
+ * @property count The count how often this event occurred. Is only respected by other methods if the [action] of this
+ *  event is [Action.DOWN_UP] or [Action.REPEAT], else always 1 is assumed.
+ */
+data class InputKeyEvent(
+    val eventTime: Long,
+    val action: Action,
+    val data: KeyData,
+    val count: Int
+) {
+    companion object {
+        /**
+         * Creates a new input key event with given [keyData] and sets the action to [Action.DOWN].
+         *
+         * @param keyData The key data of the input key event event to create.
+         *
+         * @return The created input key event.
+         */
+        fun down(keyData: KeyData): InputKeyEvent {
+            return InputKeyEvent(
+                eventTime = SystemClock.uptimeMillis(),
+                action = Action.DOWN,
+                data = keyData,
+                count = 1
+            )
+        }
+
+        /**
+         * Creates a new input key event with given [keyData] and sets the action to [Action.DOWN_UP].
+         *
+         * @param keyData The key data of the input key event event to create.
+         * @param count How often this event occurred. Must be grater or equal to 1, defaults to 1.
+         *
+         * @return The created input key event.
+         */
+        fun downUp(keyData: KeyData, count: Int = 1): InputKeyEvent {
+            return InputKeyEvent(
+                eventTime = SystemClock.uptimeMillis(),
+                action = Action.DOWN_UP,
+                data = keyData,
+                count = count
+            )
+        }
+
+        /**
+         * Creates a new input key event with given [keyData] and sets the action to [Action.UP].
+         *
+         * @param keyData The key data of the input key event event to create.
+         *
+         * @return The created input key event.
+         */
+        fun up(keyData: KeyData): InputKeyEvent {
+            return InputKeyEvent(
+                eventTime = SystemClock.uptimeMillis(),
+                action = Action.UP,
+                data = keyData,
+                count = 1
+            )
+        }
+
+        /**
+         * Creates a new input key event with given [keyData] and sets the action to [Action.REPEAT].
+         *
+         * @param keyData The key data of the input key event event to create.
+         * @param count How often this event occurred. Must be grater or equal to 1, defaults to 1.
+         *
+         * @return The created input key event.
+         */
+        fun repeat(keyData: KeyData, count: Int = 1): InputKeyEvent {
+            return InputKeyEvent(
+                eventTime = SystemClock.uptimeMillis(),
+                action = Action.REPEAT,
+                data = keyData,
+                count = count
+            )
+        }
+
+        /**
+         * Creates a new input key event with given [keyData] and sets the action to [Action.CANCEL].
+         *
+         * @param keyData The key data of the input key event event to create.
+         *
+         * @return The created input key event.
+         */
+        fun cancel(keyData: KeyData): InputKeyEvent {
+            return InputKeyEvent(
+                eventTime = SystemClock.uptimeMillis(),
+                action = Action.CANCEL,
+                data = keyData,
+                count = 1
+            )
+        }
+    }
+
+    /**
+     * Checks if the [other] input key event is a consecutive event while respecting [maxEventTimeDiff].
+     *
+     * @param other The other input key event to compare with this one.
+     * @param maxEventTimeDiff The maximum event time diff between this event and [other], in milliseconds.
+     *
+     * @return True if this event is a consecutive event of [other], false otherwise.
+     */
+    fun isConsecutiveEventOf(other: InputKeyEvent?, maxEventTimeDiff: Long): Boolean {
+        return other != null && data.code == other.data.code && eventTime - other.eventTime <= maxEventTimeDiff
+    }
+
+    /**
+     * Returns a string representation of this input key event.
+     */
+    override fun toString(): String {
+        return "FlorisKeyEvent { eventTime=${eventTime}ms, action=$action, data=$data, count=$count }"
+    }
+
+    /**
+     * The action of an input key event.
+     */
+    enum class Action {
+        DOWN,
+        DOWN_UP,
+        UP,
+        REPEAT,
+        CANCEL,
+    }
+}
+
+/**
+ * Interface which represents an input key event sender.
+ */
+interface InputKeyEventSender {
+    /**
+     * Sends given input key event [ev] to the underlying input channel, awaiting to be processed.
+     *
+     * @param ev The input key event to send.
+     */
+    fun send(ev: InputKeyEvent)
+}
+
+/**
+ * Interface which represents an input key event receiver.
+ */
+interface InputKeyEventReceiver {
+    /**
+     * Event method which gets called when a key went down.
+     *
+     * @param ev The associated input key event.
+     */
+    fun onInputKeyDown(ev: InputKeyEvent)
+
+    /**
+     * Event method which gets called when a key went up.
+     *
+     * @param ev The associated input key event.
+     */
+    fun onInputKeyUp(ev: InputKeyEvent)
+
+    /**
+     * Event method which gets called when a key is called repeatedly while being pressed down.
+     *
+     * @param ev The associated input key event.
+     */
+    fun onInputKeyRepeat(ev: InputKeyEvent)
+
+    /**
+     * Event method which gets called when a key press is cancelled.
+     *
+     * @param ev The associated input key event.
+     */
+    fun onInputKeyCancel(ev: InputKeyEvent)
+}

app/src/main/java/dev/patrickgold/florisboard/ime/core/InputView.kt

@@ -20,12 +20,11 @@ import android.content.Context
 import android.content.res.Configuration
 import android.util.AttributeSet
 import android.util.DisplayMetrics
-import android.util.Log
-import android.widget.ImageButton
+import android.view.ViewGroup
 import android.widget.LinearLayout
 import android.widget.ViewFlipper
-import dev.patrickgold.florisboard.BuildConfig
 import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.onehanded.OneHandedMode
 import dev.patrickgold.florisboard.ime.text.key.KeyVariation
 import dev.patrickgold.florisboard.ime.text.keyboard.KeyboardMode
 import dev.patrickgold.florisboard.util.ViewLayoutUtils
@@ -47,20 +46,16 @@ class InputView : LinearLayout {
         private set
     var desiredMediaKeyboardViewHeight: Float = resources.getDimension(R.dimen.mediaKeyboardView_baseHeight)
         private set
+    var heightFactor: Float = 1.0f
+        private set
+    var shouldGiveAdditionalSpace: Boolean = false
+        private set
 
     var mainViewFlipper: ViewFlipper? = null
         private set
-    var oneHandedCtrlPanelStart: LinearLayout? = null
+    var oneHandedCtrlPanelStart: ViewGroup? = null
         private set
-    var oneHandedCtrlPanelEnd: LinearLayout? = null
-        private set
-    var oneHandedCtrlMoveStart: ImageButton? = null
-        private set
-    var oneHandedCtrlMoveEnd: ImageButton? = null
-        private set
-    var oneHandedCtrlCloseStart: ImageButton? = null
-        private set
-    var oneHandedCtrlCloseEnd: ImageButton? = null
+    var oneHandedCtrlPanelEnd: ViewGroup? = null
         private set
 
     constructor(context: Context) : this(context, null)
@@ -79,19 +74,15 @@ class InputView : LinearLayout {
         mainViewFlipper = findViewById(R.id.main_view_flipper)
         oneHandedCtrlPanelStart = findViewById(R.id.one_handed_ctrl_panel_start)
         oneHandedCtrlPanelEnd = findViewById(R.id.one_handed_ctrl_panel_end)
-        oneHandedCtrlMoveStart = findViewById(R.id.one_handed_ctrl_move_start)
-        oneHandedCtrlMoveEnd = findViewById(R.id.one_handed_ctrl_move_end)
-        oneHandedCtrlCloseStart = findViewById(R.id.one_handed_ctrl_close_start)
-        oneHandedCtrlCloseEnd = findViewById(R.id.one_handed_ctrl_close_end)
 
         florisboard.registerInputView(this)
     }
 
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
-        val heightFactor = when (resources.configuration.orientation) {
+        heightFactor = when (resources.configuration.orientation) {
             Configuration.ORIENTATION_LANDSCAPE -> 1.0f
-            else -> if (prefs.keyboard.oneHandedMode != "off") {
-                0.9f
+            else -> if (prefs.keyboard.oneHandedMode != OneHandedMode.OFF) {
+                prefs.keyboard.oneHandedModeScaleFactor / 100.0f
             } else {
                 1.0f
             }
@@ -110,12 +101,12 @@ class InputView : LinearLayout {
         var baseSmartbarHeight = 0.16129f * baseHeight
         var baseTextInputHeight = baseHeight - baseSmartbarHeight
         val tim = florisboard.textInputManager
-        val shouldGiveAdditionalSpace = prefs.keyboard.numberRow &&
+        shouldGiveAdditionalSpace = prefs.keyboard.numberRow &&
                 !(tim.getActiveKeyboardMode() == KeyboardMode.NUMERIC ||
                 tim.getActiveKeyboardMode() == KeyboardMode.PHONE ||
                 tim.getActiveKeyboardMode() == KeyboardMode.PHONE2)
         if (shouldGiveAdditionalSpace) {
-            val additionalHeight = desiredTextKeyboardViewHeight * 0.18f
+            val additionalHeight = baseTextInputHeight * 0.25f
             baseHeight += additionalHeight
             baseTextInputHeight += additionalHeight
         }
@@ -135,7 +126,11 @@ class InputView : LinearLayout {
         // Add bottom offset for curved screens here. As the desired heights have already been set,
         //  adding a value to the height now will result in a bottom padding (aka offset).
         baseHeight += ViewLayoutUtils.convertDpToPixel(
-            florisboard.prefs.keyboard.bottomOffset.toFloat(),
+            if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+                florisboard.prefs.keyboard.bottomOffsetLandscape.toFloat()
+            } else {
+                florisboard.prefs.keyboard.bottomOffsetPortrait.toFloat()
+            },
             context
         )
 
@@ -169,5 +164,4 @@ class InputView : LinearLayout {
             resources.getDimension(R.dimen.inputView_baseHeight)
         )
     }
-
 }

app/src/main/java/dev/patrickgold/florisboard/ime/core/InputWindowView.kt

@@ -18,12 +18,7 @@ package dev.patrickgold.florisboard.ime.core
 
 import android.content.Context
 import android.util.AttributeSet
-import android.util.Log
 import android.widget.FrameLayout
-import android.widget.LinearLayout
-import android.widget.ViewFlipper
-import dev.patrickgold.florisboard.BuildConfig
-import dev.patrickgold.florisboard.R
 
 /**
  * Root view of the keyboard.

app/src/main/java/dev/patrickgold/florisboard/ime/core/PrefHelper.kt

@@ -21,14 +21,17 @@ import android.content.SharedPreferences
 import android.provider.Settings
 import androidx.preference.PreferenceManager
 import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.landscapeinput.LandscapeInputUiMode
+import dev.patrickgold.florisboard.ime.onehanded.OneHandedMode
 import dev.patrickgold.florisboard.ime.text.gestures.DistanceThreshold
 import dev.patrickgold.florisboard.ime.text.gestures.SwipeAction
 import dev.patrickgold.florisboard.ime.text.gestures.VelocityThreshold
 import dev.patrickgold.florisboard.ime.text.key.KeyHintMode
+import dev.patrickgold.florisboard.ime.text.key.UtilityKeyAction
+import dev.patrickgold.florisboard.ime.text.smartbar.CandidateView
 import dev.patrickgold.florisboard.ime.theme.ThemeMode
 import dev.patrickgold.florisboard.util.TimeUtil
 import dev.patrickgold.florisboard.util.VersionName
-import kotlin.collections.HashMap
 
 /**
  * Helper class for an organized access to the shared preferences.
@@ -51,6 +54,7 @@ class PrefHelper(
     val smartbar = Smartbar(this)
     val suggestion = Suggestion(this)
     val theme = Theme(this)
+    val clipboard = Clipboard(this)
 
     /**
      * Checks the cache if an entry for [key] exists, else calls [getPrefInternal] to retrieve the
@@ -307,25 +311,36 @@ class PrefHelper(
      */
     class Keyboard(private val prefHelper: PrefHelper) {
         companion object {
-            const val BOTTOM_OFFSET =                   "keyboard__bottom_offset"
-            const val FONT_SIZE_MULTIPLIER_PORTRAIT =   "keyboard__font_size_multiplier_portrait"
-            const val FONT_SIZE_MULTIPLIER_LANDSCAPE =  "keyboard__font_size_multiplier_landscape"
-            const val HEIGHT_FACTOR =                   "keyboard__height_factor"
-            const val HEIGHT_FACTOR_CUSTOM =            "keyboard__height_factor_custom"
-            const val HINTED_NUMBER_ROW_MODE =          "keyboard__hinted_number_row_mode"
-            const val HINTED_SYMBOLS_MODE =             "keyboard__hinted_symbols_mode"
-            const val LONG_PRESS_DELAY =                "keyboard__long_press_delay"
-            const val NUMBER_ROW =                      "keyboard__number_row"
-            const val ONE_HANDED_MODE =                 "keyboard__one_handed_mode"
-            const val POPUP_ENABLED =                   "keyboard__popup_enabled"
-            const val SOUND_ENABLED =                   "keyboard__sound_enabled"
-            const val SOUND_VOLUME =                    "keyboard__sound_volume"
-            const val VIBRATION_ENABLED =               "keyboard__vibration_enabled"
-            const val VIBRATION_STRENGTH =              "keyboard__vibration_strength"
+            const val BOTTOM_OFFSET_PORTRAIT =          "keyboard__bottom_offset_portrait"
+            const val BOTTOM_OFFSET_LANDSCAPE =             "keyboard__bottom_offset_landscape"
+            const val FONT_SIZE_MULTIPLIER_PORTRAIT =       "keyboard__font_size_multiplier_portrait"
+            const val FONT_SIZE_MULTIPLIER_LANDSCAPE =      "keyboard__font_size_multiplier_landscape"
+            const val HEIGHT_FACTOR =                       "keyboard__height_factor"
+            const val HEIGHT_FACTOR_CUSTOM =                "keyboard__height_factor_custom"
+            const val HINTED_NUMBER_ROW_MODE =              "keyboard__hinted_number_row_mode"
+            const val HINTED_SYMBOLS_MODE =                 "keyboard__hinted_symbols_mode"
+            const val KEY_SPACING_HORIZONTAL =              "keyboard__key_spacing_horizontal"
+            const val KEY_SPACING_VERTICAL =                "keyboard__key_spacing_vertical"
+            const val LANDSCAPE_INPUT_UI_MODE =             "keyboard__landscape_input_ui_mode"
+            const val LONG_PRESS_DELAY =                    "keyboard__long_press_delay"
+            const val NUMBER_ROW =                          "keyboard__number_row"
+            const val ONE_HANDED_MODE =                     "keyboard__one_handed_mode"
+            const val ONE_HANDED_MODE_SCALE_FACTOR =        "keyboard__one_handed_mode_scale_factor"
+            const val POPUP_ENABLED =                       "keyboard__popup_enabled"
+            const val SOUND_ENABLED =                       "keyboard__sound_enabled"
+            const val SOUND_VOLUME =                        "keyboard__sound_volume"
+            const val SPACE_BAR_SWITCHES_TO_CHARACTERS =    "keyboard__space_bar_switches_to_characters"
+            const val UTILITY_KEY_ACTION =                  "keyboard__utility_key_action"
+            const val UTILITY_KEY_ENABLED =                 "keyboard__utility_key_enabled"
+            const val VIBRATION_ENABLED =                   "keyboard__vibration_enabled"
+            const val VIBRATION_STRENGTH =                  "keyboard__vibration_strength"
         }
 
-        var bottomOffset: Int = 0
-            get() = prefHelper.getPref(BOTTOM_OFFSET, 0)
+        var bottomOffsetPortrait: Int = 0
+            get() = prefHelper.getPref(BOTTOM_OFFSET_PORTRAIT, 0)
+            private set
+        var bottomOffsetLandscape: Int = 0
+            get() = prefHelper.getPref(BOTTOM_OFFSET_LANDSCAPE, 0)
             private set
         var fontSizeMultiplierPortrait: Int
             get() =  prefHelper.getPref(FONT_SIZE_MULTIPLIER_PORTRAIT, 100)
@@ -345,6 +360,15 @@ class PrefHelper(
         var hintedSymbolsMode: KeyHintMode
             get() =  KeyHintMode.fromString(prefHelper.getPref(HINTED_SYMBOLS_MODE, KeyHintMode.ENABLED_ACCENT_PRIORITY.toString()))
             set(v) = prefHelper.setPref(HINTED_SYMBOLS_MODE, v)
+        var keySpacingHorizontal: Float = 2f
+            get() = prefHelper.getPref(KEY_SPACING_HORIZONTAL, 4) / 2f
+            private set
+        var keySpacingVertical: Float = 5f
+            get() = prefHelper.getPref(KEY_SPACING_VERTICAL, 10) / 2f
+            private set
+        var landscapeInputUiMode: LandscapeInputUiMode
+            get() =  LandscapeInputUiMode.fromString(prefHelper.getPref(LANDSCAPE_INPUT_UI_MODE, LandscapeInputUiMode.DYNAMICALLY_SHOW.toString()))
+            set(v) = prefHelper.setPref(LANDSCAPE_INPUT_UI_MODE, v)
         var longPressDelay: Int = 0
             get() = prefHelper.getPref(LONG_PRESS_DELAY, 300)
             private set
@@ -352,8 +376,11 @@ class PrefHelper(
             get() =  prefHelper.getPref(NUMBER_ROW, false)
             set(v) = prefHelper.setPref(NUMBER_ROW, v)
         var oneHandedMode: String
-            get() = prefHelper.getPref(ONE_HANDED_MODE, "off")
+            get() = prefHelper.getPref(ONE_HANDED_MODE, OneHandedMode.OFF)
             set(value) = prefHelper.setPref(ONE_HANDED_MODE, value)
+        var oneHandedModeScaleFactor: Int
+            get() =  prefHelper.getPref(ONE_HANDED_MODE_SCALE_FACTOR, 87)
+            set(v) = prefHelper.setPref(ONE_HANDED_MODE_SCALE_FACTOR, v)
         var popupEnabled: Boolean = false
             get() = prefHelper.getPref(POPUP_ENABLED, true)
             private set
@@ -364,6 +391,15 @@ class PrefHelper(
         var soundVolume: Int = 0
             get() = prefHelper.getPref(SOUND_VOLUME, -1)
             private set
+        var spaceBarSwitchesToCharacters: Boolean
+            get() =  prefHelper.getPref(SPACE_BAR_SWITCHES_TO_CHARACTERS, true)
+            set(v) = prefHelper.setPref(SPACE_BAR_SWITCHES_TO_CHARACTERS, v)
+        var utilityKeyAction: UtilityKeyAction
+            get() =  UtilityKeyAction.fromString(prefHelper.getPref(UTILITY_KEY_ACTION, UtilityKeyAction.DYNAMIC_SWITCH_LANGUAGE_EMOJIS.toString()))
+            set(v) = prefHelper.setPref(UTILITY_KEY_ACTION, v)
+        var utilityKeyEnabled: Boolean
+            get() =  prefHelper.getPref(UTILITY_KEY_ENABLED, true)
+            set(v) = prefHelper.setPref(UTILITY_KEY_ENABLED, v)
         var vibrationEnabled: Boolean = false
             get() = prefHelper.getPref(VIBRATION_ENABLED, true)
             private set
@@ -408,17 +444,29 @@ class PrefHelper(
      */
     class Suggestion(private val prefHelper: PrefHelper) {
         companion object {
+            const val BLOCK_POSSIBLY_OFFENSIVE =    "suggestion__block_possibly_offensive"
+            const val CLIPBOARD_CONTENT_ENABLED =   "suggestion__clipboard_content_enabled"
+            const val CLIPBOARD_CONTENT_TIMEOUT =   "suggestion__clipboard_content_timeout"
+            const val DISPLAY_MODE =                "suggestion__display_mode"
             const val ENABLED =                     "suggestion__enabled"
-            const val SUGGEST_CLIPBOARD_CONTENT =   "suggestion__suggest_clipboard_content"
             const val USE_PREV_WORDS =              "suggestion__use_prev_words"
         }
 
+        var blockPossiblyOffensive: Boolean
+            get() =  prefHelper.getPref(BLOCK_POSSIBLY_OFFENSIVE, true)
+            set(v) = prefHelper.setPref(BLOCK_POSSIBLY_OFFENSIVE, v)
+        var clipboardContentEnabled: Boolean
+            get() =  prefHelper.getPref(CLIPBOARD_CONTENT_ENABLED, false)
+            set(v) = prefHelper.setPref(CLIPBOARD_CONTENT_ENABLED, v)
+        var clipboardContentTimeout: Int
+            get() =  prefHelper.getPref(CLIPBOARD_CONTENT_TIMEOUT, 30)
+            set(v) = prefHelper.setPref(CLIPBOARD_CONTENT_TIMEOUT, v)
+        var displayMode: CandidateView.DisplayMode
+            get() =  CandidateView.DisplayMode.fromString(prefHelper.getPref(DISPLAY_MODE, CandidateView.DisplayMode.DYNAMIC_SCROLLABLE.toString()))
+            set(v) = prefHelper.setPref(DISPLAY_MODE, v)
         var enabled: Boolean
             get() =  prefHelper.getPref(ENABLED, true)
             set(v) = prefHelper.setPref(ENABLED, v)
-        var suggestClipboardContent: Boolean
-            get() =  prefHelper.getPref(SUGGEST_CLIPBOARD_CONTENT, false)
-            set(v) = prefHelper.setPref(SUGGEST_CLIPBOARD_CONTENT, v)
         var usePrevWords: Boolean
             get() =  prefHelper.getPref(USE_PREV_WORDS, true)
             set(v) = prefHelper.setPref(USE_PREV_WORDS, v)
@@ -460,4 +508,52 @@ class PrefHelper(
             get() =  prefHelper.getPref(SUNSET_TIME, TimeUtil.encode(18, 0))
             set(v) = prefHelper.setPref(SUNSET_TIME, v)
     }
+
+    /**
+     * Wrapper class for clipboard preferences
+     */
+    class Clipboard(private val prefHelper: PrefHelper) {
+        companion object {
+            const val ENABLE_INTERNAL    = "clipboard__enable_internal"
+            const val SYNC_TO_SYSTEM     = "clipboard__sync_to_system"
+            const val SYNC_TO_FLORIS     = "clipboard__sync_to_floris"
+            const val ENABLE_HISTORY     = "clipboard__enable_history"
+            const val CLEAN_UP_OLD       = "clipboard__clean_up_old"
+            const val LIMIT_HISTORY_SIZE = "clipboard__limit_history_size"
+            const val CLEAN_UP_AFTER     = "clipboard__clean_up_after"
+            const val MAX_HISTORY_SIZE   = "clipboard__max_history_size"
+        }
+
+        var enableInternal: Boolean
+            get() =  prefHelper.getPref(ENABLE_INTERNAL, false)
+            set(v) = prefHelper.setPref(ENABLE_INTERNAL, v)
+
+        var syncToSystem: Boolean
+            get() =  prefHelper.getPref(SYNC_TO_SYSTEM, false)
+            set(v) = prefHelper.setPref(SYNC_TO_SYSTEM, v)
+
+        var syncToFloris: Boolean
+            get() =  prefHelper.getPref(SYNC_TO_FLORIS, true)
+            set(v) = prefHelper.setPref(SYNC_TO_FLORIS, v)
+
+        var enableHistory: Boolean
+            get() =  prefHelper.getPref(ENABLE_HISTORY, false)
+            set(v) = prefHelper.setPref(ENABLE_HISTORY, v)
+
+        var cleanUpOld: Boolean
+            get() =  prefHelper.getPref(CLEAN_UP_OLD, false)
+            set(v) = prefHelper.setPref(CLEAN_UP_OLD, v)
+
+        var limitHistorySize: Boolean
+            get() =  prefHelper.getPref(LIMIT_HISTORY_SIZE, true)
+            set(v) = prefHelper.setPref(LIMIT_HISTORY_SIZE, v)
+
+        var cleanUpAfter: Int
+            get() =  prefHelper.getPref(CLEAN_UP_AFTER, 20)
+            set(v) = prefHelper.setPref(CLEAN_UP_AFTER, v)
+
+        var maxHistorySize: Int
+            get() =  prefHelper.getPref(MAX_HISTORY_SIZE, 20)
+            set(v) = prefHelper.setPref(MAX_HISTORY_SIZE, v)
+    }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/core/SubtypeManager.kt

@@ -20,7 +20,10 @@ import android.content.Context
 import com.squareup.moshi.Moshi
 import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
 import dev.patrickgold.florisboard.util.LocaleUtils
-import kotlinx.coroutines.*
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.launch
 import java.util.*
 
 /**

app/src/main/java/dev/patrickgold/florisboard/ime/dictionary/Dictionary.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.dictionary
+
+import dev.patrickgold.florisboard.ime.extension.Asset
+import dev.patrickgold.florisboard.ime.nlp.LanguageModel
+import dev.patrickgold.florisboard.ime.nlp.MutableLanguageModel
+import dev.patrickgold.florisboard.ime.nlp.Token
+import dev.patrickgold.florisboard.ime.nlp.WeightedToken
+
+/**
+ * Standardized dictionary interface for interacting with dictionaries.
+ */
+interface Dictionary<T : Any, F : Comparable<F>> : Asset {
+    val languageModel: LanguageModel<T, F>
+
+    /**
+     * Gets token predictions based on the given [precedingTokens] and the [currentToken]. The
+     * length of the returned list is limited to [maxSuggestionCount]. Note that the returned list
+     * may at any time give back less items than [maxSuggestionCount] indicates.
+     */
+    fun getTokenPredictions(
+        precedingTokens: List<Token<T>>,
+        currentToken: Token<T>?,
+        maxSuggestionCount: Int,
+        allowPossiblyOffensive: Boolean
+    ): List<WeightedToken<T, F>>
+
+    fun getDate(): Long
+
+    fun getVersion(): Int
+}
+
+interface MutableDictionary<T : Any, F : Comparable<F>> : Dictionary<T, F> {
+    override val languageModel: MutableLanguageModel<T, F>
+
+    fun trainTokenPredictions(
+        precedingTokens: List<Token<T>>,
+        lastToken: Token<T>
+    )
+
+    fun setDate(date: Int)
+
+    fun setVersion(version: Int)
+}

app/src/main/java/dev/patrickgold/florisboard/ime/dictionary/DictionaryManager.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.dictionary
+
+import android.content.Context
+import dev.patrickgold.florisboard.ime.extension.AssetRef
+import timber.log.Timber
+
+/**
+ * TODO: document
+ */
+class DictionaryManager private constructor(private val applicationContext: Context) {
+    private val dictionaryCache: MutableMap<String, Dictionary<String, Int>> = mutableMapOf()
+
+    companion object {
+        private var defaultInstance: DictionaryManager? = null
+
+        fun init(applicationContext: Context): DictionaryManager {
+            val instance = DictionaryManager(applicationContext)
+            defaultInstance = instance
+            return instance
+        }
+
+        fun default(): DictionaryManager {
+            val instance = defaultInstance
+            if (instance != null) {
+                return instance
+            } else {
+                throw UninitializedPropertyAccessException(
+                    "${DictionaryManager::class.simpleName} has not been initialized previously. Make sure to call init(applicationContext) before using default()."
+                )
+            }
+        }
+    }
+
+    fun loadDictionary(ref: AssetRef): Result<Dictionary<String, Int>> {
+        dictionaryCache[ref.toString()]?.let {
+            return Result.success(it)
+        }
+        if (ref.path.endsWith(".flict")) {
+            // Assume this is a Flictionary
+            Flictionary.load(applicationContext, ref).onSuccess { flict ->
+                dictionaryCache[ref.toString()] = flict
+                return Result.success(flict)
+            }.onFailure { err ->
+                Timber.i(err)
+                return Result.failure(err)
+            }
+        } else {
+            return Result.failure(Exception("Unable to determine supported type for given AssetRef!"))
+        }
+        return Result.failure(Exception("If this message is ever thrown, something is completely broken..."))
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/dictionary/Flictionary.kt

@@ -0,0 +1,430 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.dictionary
+
+import android.content.Context
+import dev.patrickgold.florisboard.ime.extension.AssetRef
+import dev.patrickgold.florisboard.ime.extension.AssetSource
+import dev.patrickgold.florisboard.ime.nlp.*
+import java.io.InputStream
+import java.util.*
+import kotlin.jvm.Throws
+
+/**
+ * Class Flictionary which takes care of loading the binary asset as well as providing words for
+ * queries.
+ *
+ * This class accepts binary dictionary files of the type "flict" as defined in here:
+ * https://github.com/florisboard/dictionary-tools/blob/main/flictionary.md
+ */
+class Flictionary private constructor(
+    override val name: String,
+    override val label: String,
+    override val authors: List<String>,
+    private val date: Long,
+    private val version: Int,
+    private val headerStr: String,
+    override val languageModel: LanguageModel<String, Int>
+) : Dictionary<String, Int> {
+    companion object {
+        private const val VERSION_0 =                           0x0
+
+        private const val MASK_BEGIN_PTREE_NODE =               0x80
+        private const val CMDB_BEGIN_PTREE_NODE =               0x00
+        private const val ATTR_PTREE_NODE_ORDER =               0x70
+        private const val ATTR_PTREE_NODE_TYPE =                0x0C
+        private const val ATTR_PTREE_NODE_TYPE_CHAR =           0
+        private const val ATTR_PTREE_NODE_TYPE_WORD_FILLER =    1
+        private const val ATTR_PTREE_NODE_TYPE_WORD =           2
+        private const val ATTR_PTREE_NODE_TYPE_SHORTCUT =       3
+        private const val ATTR_PTREE_NODE_SIZE =                0x03
+
+        private const val MASK_END =                            0xC0
+        private const val CMDB_END =                            0x80
+        private const val ATTR_END_COUNT =                      0x3F
+
+        private const val MASK_BEGIN_HEADER =                   0xE0
+        private const val CMDB_BEGIN_HEADER =                   0xC0
+        private const val ATTR_HEADER_VERSION =                 0x1F
+
+        private const val MASK_DEFINE_SHORTCUT =                0xF0
+        private const val CMDB_DEFINE_SHORTCUT =                0xE0
+
+        /**
+         * Loads a Flictionary binary asset from given [assetRef] and returns a result containing
+         * either the parsed dictionary or an exception giving information about the error which
+         * occurred.
+         */
+        fun load(context: Context, assetRef: AssetRef): Result<Flictionary> {
+            val buffer = ByteArray(5000) { 0 }
+            val inputStream: InputStream
+            if (assetRef.source == AssetSource.Assets) {
+                inputStream = context.assets.open(assetRef.path)
+            } else {
+                return Result.failure(Exception("Only AssetSource.Assets is currently supported!"))
+            }
+
+            var headerStr: String? = null
+            var date: Long = 0
+            var version = 0
+            val ngramTree = NgramTree()
+
+            var pos = 0
+            val ngramOrderStack = mutableListOf<Int>()
+            val ngramTreeStack = mutableListOf<NgramNode>()
+
+            while (true) {
+                if (inputStream.readNext(buffer, 0, 1) <= 0) {
+                    break
+                }
+                val cmd = buffer[0].toInt() and 0xFF
+                when {
+                    (cmd and MASK_BEGIN_PTREE_NODE) == CMDB_BEGIN_PTREE_NODE -> {
+                        if (pos == 0) {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_CMD_BEGIN_PTREE_NODE,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                        val order = ((cmd and ATTR_PTREE_NODE_ORDER) shr 4) + 1
+                        val type = ((cmd and ATTR_PTREE_NODE_TYPE) shr 2)
+                        val size = (cmd and ATTR_PTREE_NODE_SIZE) + 1
+                        val freq: Int
+                        val freqSize: Int
+                        when (type) {
+                            ATTR_PTREE_NODE_TYPE_CHAR -> {
+                                freq = NgramNode.FREQ_CHARACTER
+                                freqSize = 0
+                            }
+                            ATTR_PTREE_NODE_TYPE_WORD_FILLER -> {
+                                freq = NgramNode.FREQ_WORD_FILLER
+                                freqSize = 0
+                            }
+                            ATTR_PTREE_NODE_TYPE_WORD -> {
+                                if (inputStream.readNext(buffer, 1, 1) > 0) {
+                                    freq = buffer[1].toInt() and 0xFF
+                                } else {
+                                    inputStream.close()
+                                    return Result.failure(
+                                        ParseException(
+                                            errorType = ParseException.ErrorType.UNEXPECTED_EOF,
+                                            address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                        )
+                                    )
+                                }
+                                freqSize = 1
+                            }
+                            else -> return Result.failure(Exception("TODO: shortcut not supported"))
+                        }
+                        if (inputStream.readNext(buffer, freqSize + 1, size) > 0) {
+                            val char = String(buffer, freqSize + 1, size, Charsets.UTF_8)[0]
+                            val node = NgramNode(order, char, freq)
+                            val lastOrder = ngramOrderStack.lastOrNull()
+                            if (lastOrder == null) {
+                                ngramTree.higherOrderChildren.add(node)
+                            } else {
+                                if (lastOrder == order) {
+                                    ngramTreeStack.last().sameOrderChildren.add(node)
+                                } else {
+                                    ngramTreeStack.last().higherOrderChildren.add(node)
+                                }
+                            }
+                            ngramOrderStack.add(order)
+                            ngramTreeStack.add(node)
+                            pos += (freqSize + 1 + size)
+                        } else {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_EOF,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                    }
+
+                    (cmd and MASK_BEGIN_HEADER) == CMDB_BEGIN_HEADER -> {
+                        if (pos != 0) {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_CMD_BEGIN_HEADER,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                        version = cmd and ATTR_HEADER_VERSION
+                        if (version != VERSION_0) {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNSUPPORTED_FLICTIONARY_VERSION,
+                                    address = pos,
+                                    cmdByte = cmd.toByte(),
+                                    absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                        if (inputStream.readNext(buffer, 1, 9) > 0) {
+                            val size = (buffer[1].toInt() and 0xFF)
+                            date =
+                                ((buffer[2].toInt() and 0xFF).toLong() shl 56) +
+                                ((buffer[3].toInt() and 0xFF).toLong() shl 48) +
+                                ((buffer[4].toInt() and 0xFF).toLong() shl 40) +
+                                ((buffer[5].toInt() and 0xFF).toLong() shl 32) +
+                                ((buffer[6].toInt() and 0xFF).toLong() shl 24) +
+                                ((buffer[7].toInt() and 0xFF).toLong() shl 16) +
+                                ((buffer[8].toInt() and 0xFF).toLong() shl 8) +
+                                ((buffer[9].toInt() and 0xFF).toLong() shl 0)
+                            if (inputStream.readNext(buffer, 10, size) > 0) {
+                                headerStr = String(buffer, 10, size, Charsets.UTF_8)
+                                ngramOrderStack.add(-1)
+                                ngramTreeStack.add(NgramTree())
+                                pos += (10 + size)
+                            } else {
+                                inputStream.close()
+                                return Result.failure(
+                                    ParseException(
+                                        errorType = ParseException.ErrorType.UNEXPECTED_EOF,
+                                        address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                    )
+                                )
+                            }
+                        } else {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_EOF,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                    }
+
+                    (cmd and MASK_END) == CMDB_END -> {
+                        if (pos == 0) {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_CMD_END,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                        val n = (cmd and ATTR_END_COUNT)
+                        if (n > 0) {
+                            if (n <= ngramTreeStack.size) {
+                                for (c in 0 until n) {
+                                    ngramOrderStack.removeLast()
+                                    ngramTreeStack.removeLast()
+                                }
+                            } else {
+                                inputStream.close()
+                                return Result.failure(
+                                    ParseException(
+                                        errorType = ParseException.ErrorType.UNEXPECTED_ABSOLUTE_DEPTH_DECREASE_BELOW_ZERO,
+                                        address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size - n
+                                    )
+                                )
+                            }
+                        } else {
+                            inputStream.close()
+                            return Result.failure(
+                                ParseException(
+                                    errorType = ParseException.ErrorType.UNEXPECTED_CMD_END_ZERO_VALUE,
+                                    address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                                )
+                            )
+                        }
+                        pos += 1
+                    }
+                    else -> {
+                        inputStream.close()
+                        return Result.failure(
+                            ParseException(
+                                errorType = ParseException.ErrorType.INVALID_CMD_BYTE_PROVIDED,
+                                address = pos, cmdByte = cmd.toByte(), absoluteDepth = ngramTreeStack.size
+                            )
+                        )
+                    }
+                }
+            }
+            inputStream.close()
+
+            if (ngramTreeStack.size != 0) {
+                return Result.failure(
+                    ParseException(
+                        errorType = ParseException.ErrorType.UNEXPECTED_ABSOLUTE_DEPTH_NOT_ZERO_AT_EOF,
+                        address = pos, cmdByte = 0x00.toByte(), absoluteDepth = ngramTreeStack.size
+                    )
+                )
+            }
+
+            return Result.success(
+                Flictionary(
+                    name = "flict",
+                    label = "flict",
+                    authors = listOf(),
+                    headerStr = headerStr ?: "",
+                    date = date,
+                    version = version,
+                    languageModel = FlorisLanguageModel(ngramTree)
+                )
+            )
+        }
+    }
+
+    override fun getDate(): Long = date
+
+    override fun getVersion(): Int = version
+
+    // TODO: preceding tokens are currently ignored
+    override fun getTokenPredictions(
+        precedingTokens: List<Token<String>>,
+        currentToken: Token<String>?,
+        maxSuggestionCount: Int,
+        allowPossiblyOffensive: Boolean
+    ): List<WeightedToken<String, Int>> {
+        currentToken ?: return listOf()
+
+        return if (currentToken.data.isNotEmpty()) {
+            val retList = languageModel.matchAllNgrams(
+                ngram = Ngram(
+                    _tokens = listOf(Token(currentToken.data.toLowerCase(Locale.ENGLISH))),
+                    _freq = -1
+                ),
+                maxEditDistance = 2,
+                maxTokenCount = maxSuggestionCount,
+                allowPossiblyOffensive = allowPossiblyOffensive
+            )
+            retList
+        } else {
+            listOf()
+        }
+    }
+
+    /**
+     * A parse exception to be used by [Flictionary] to indicate where the parsing of a binary file
+     * failed, while also providing some additional information.
+     */
+    class ParseException(
+        private val errorType: ErrorType,
+        private val address: Int,
+        private val cmdByte: Byte,
+        private val absoluteDepth: Int
+    ) : Exception() {
+        enum class ErrorType {
+            UNSUPPORTED_FLICTIONARY_VERSION,
+            UNEXPECTED_CMD_BEGIN_HEADER,
+            UNEXPECTED_CMD_BEGIN_PTREE_NODE,
+            UNEXPECTED_CMD_DEFINE_SHORTCUT,
+            UNEXPECTED_CMD_END,
+            UNEXPECTED_CMD_END_ZERO_VALUE,
+            UNEXPECTED_ABSOLUTE_DEPTH_DECREASE_BELOW_ZERO,
+            UNEXPECTED_ABSOLUTE_DEPTH_NOT_ZERO_AT_EOF,
+            UNEXPECTED_EOF,
+            INVALID_CMD_BYTE_PROVIDED,
+        }
+
+        override val message: String
+            get() = toString()
+        override fun toString(): String {
+            return StringBuilder().run {
+                append(
+                    when (errorType) {
+                        ErrorType.UNSUPPORTED_FLICTIONARY_VERSION -> {
+                            "Unexpected Flictionary version: ${(cmdByte.toInt() and 0xFF) and ATTR_HEADER_VERSION}"
+                        }
+                        ErrorType.UNEXPECTED_CMD_BEGIN_HEADER -> {
+                            "Unexpected command: BEGIN_HEADER"
+                        }
+                        ErrorType.UNEXPECTED_CMD_BEGIN_PTREE_NODE -> {
+                            "Unexpected command: BEGIN_PTREE_NODE"
+                        }
+                        ErrorType.UNEXPECTED_CMD_DEFINE_SHORTCUT -> {
+                            "Unexpected command: DEFINE_SHORTCUT"
+                        }
+                        ErrorType.UNEXPECTED_CMD_END -> {
+                            "Unexpected command: END"
+                        }
+                        ErrorType.UNEXPECTED_CMD_END_ZERO_VALUE -> {
+                            "Unexpected zero value provided for command END"
+                        }
+                        ErrorType.UNEXPECTED_ABSOLUTE_DEPTH_DECREASE_BELOW_ZERO -> {
+                            "Unexpected decrease in absolute depth: cannot go below zero"
+                        }
+                        ErrorType.UNEXPECTED_ABSOLUTE_DEPTH_NOT_ZERO_AT_EOF -> {
+                            "Unexpected non-zero value in absolute depth at end of file"
+                        }
+                        ErrorType.UNEXPECTED_EOF -> {
+                            "Unexpected end of file while try to do look-ahead"
+                        }
+                        ErrorType.INVALID_CMD_BYTE_PROVIDED -> {
+                            "Invalid command byte provided"
+                        }
+                    }
+                )
+                append(
+                    String.format(
+                        "\n at address 0x%08X where cmd_byte=0x%02X and section_depth=%d",
+                        address,
+                        cmdByte,
+                        absoluteDepth
+                    )
+                )
+                toString()
+            }
+        }
+    }
+}
+
+/**
+ * Reads the next [len] bytes from the input stream into the given byte array [b]. This method guarantees to either
+ * read the full length requested or if an EOF file is encountered, -1 is returned. The first byte written is at
+ * `b[off]`, the second byte at `b[off+1]` and so on.
+ *
+ * @param b The byte array to read the next [len] bytes into.
+ * @param off The offset of the first byte written in the byte array [b]. Must be non-negative.
+ * @param len The number of bytes to read. Must be non-negative.
+ *
+ * @return The number of bytes read, always matching [len] or -1 if EOF was encountered.
+ *
+ * @throws IndexOutOfBoundsException if either [off] or [len] is negative or the byte array has insufficient space to
+ *  write the request [len] bytes into it.
+ */
+@Throws(IndexOutOfBoundsException::class)
+fun InputStream.readNext(b: ByteArray, off: Int, len: Int): Int {
+    if (off < 0 || len < 0 || len > b.size - off) {
+        throw IndexOutOfBoundsException()
+    } else if (len == 0) {
+        return 0
+    }
+
+    var lenRead = 0
+    while (lenRead < len) {
+        val c = read()
+        if (c == -1) {
+            return -1
+        } else {
+            b[off + lenRead++] = c.toByte()
+        }
+    }
+    return lenRead
+}

app/src/main/java/dev/patrickgold/florisboard/ime/extension/Asset.kt

@@ -17,8 +17,6 @@
 package dev.patrickgold.florisboard.ime.extension
 
 import android.content.Context
-import com.github.michaelbull.result.Err
-import com.github.michaelbull.result.Result
 
 /**
  * Interface for an Asset to use within FlorisBoard. An asset is everything from a dictionary to a
@@ -61,6 +59,6 @@ interface Asset {
         /**
          * Loads an Asset of type [T] from the specified path.
          */
-        fun fromFile(context: Context, path: String): Result<T, Throwable> = Err(NotImplementedError())
+        fun fromFile(context: Context, path: String): Result<T> = Result.failure(NotImplementedError())
     }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/extension/AssetManager.kt

@@ -17,17 +17,15 @@
 package dev.patrickgold.florisboard.ime.extension
 
 import android.content.Context
-import com.github.michaelbull.result.*
+import android.net.Uri
 import com.squareup.moshi.Moshi
-import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
 import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
-import dev.patrickgold.florisboard.ime.popup.PopupExtension
 import dev.patrickgold.florisboard.ime.text.key.KeyTypeAdapter
 import dev.patrickgold.florisboard.ime.text.key.KeyVariationAdapter
 import dev.patrickgold.florisboard.ime.text.layout.LayoutTypeAdapter
-import dev.patrickgold.florisboard.ime.theme.Theme
 import timber.log.Timber
 import java.io.File
+import kotlin.reflect.KClass
 
 class AssetManager private constructor(private val applicationContext: Context) {
     private val moshi: Moshi = Moshi.Builder()
@@ -62,22 +60,22 @@ class AssetManager private constructor(private val applicationContext: Context)
         }
     }
 
-    fun deleteAsset(ref: AssetRef): Result<Nothing?, Throwable> {
+    fun deleteAsset(ref: AssetRef): Result<Unit> {
         return when (ref.source) {
             AssetSource.Internal -> {
                 val file = File(applicationContext.filesDir.absolutePath + "/" + ref.path)
                 if (file.isFile) {
                     val success = file.delete()
                     if (success) {
-                        Ok(null)
+                        Result.success(Unit)
                     } else {
-                        Err(Exception("Could not delete file."))
+                        Result.failure(Exception("Could not delete file."))
                     }
                 } else {
-                    Err(Exception("Provided reference is not a file."))
+                    Result.failure(Exception("Provided reference is not a file."))
                 }
             }
-            else -> Err(Exception("Can not delete an asset in source '${ref.source}'"))
+            else -> Result.failure(Exception("Can not delete an asset in source '${ref.source}'"))
         }
     }
 
@@ -100,7 +98,7 @@ class AssetManager private constructor(private val applicationContext: Context)
         }
     }
 
-    fun <T: Asset> listAssets(ref: AssetRef, assetClass: Class<T>): Result<Map<AssetRef, T>, Throwable> {
+    fun <T : Asset> listAssets(ref: AssetRef, assetClass: KClass<T>): Result<Map<AssetRef, T>> {
         val retMap = mutableMapOf<AssetRef, T>()
         return when (ref.source) {
             AssetSource.Assets -> {
@@ -117,9 +115,9 @@ class AssetManager private constructor(private val applicationContext: Context)
                             }
                         }
                     }
-                    Ok(retMap.toMap())
+                    Result.success(retMap.toMap())
                 } catch (e: Exception) {
-                    Err(e)
+                    Result.failure(e)
                 }
             }
             AssetSource.Internal -> {
@@ -139,19 +137,19 @@ class AssetManager private constructor(private val applicationContext: Context)
                         }
                     }
                 }
-                Ok(retMap.toMap())
+                Result.success(retMap.toMap())
             }
-            else -> Ok(retMap.toMap())
+            else -> Result.success(retMap.toMap())
         }
     }
 
-    fun <T: Asset> loadAsset(ref: AssetRef, assetClass: Class<T>): Result<T, Throwable> {
+    fun <T : Asset> loadAsset(ref: AssetRef, assetClass: KClass<T>): Result<T> {
         val rawJsonData = when (ref.source) {
             is AssetSource.Assets -> {
                 try {
                     applicationContext.assets.open(ref.path).bufferedReader().use { it.readText() }
                 } catch (e: Exception) {
-                    return Err(e)
+                    return Result.failure(e)
                 }
             }
             is AssetSource.Internal -> {
@@ -166,28 +164,67 @@ class AssetManager private constructor(private val applicationContext: Context)
             else -> "{}"
         }
         return try {
-            val adapter = moshi.adapter(assetClass)
+            val adapter = moshi.adapter(assetClass.java)
             val asset = adapter.fromJson(rawJsonData)
             if (asset != null) {
-                Ok(asset)
+                Result.success(asset)
             } else {
-                Err(NullPointerException("Asset failed to load!"))
+                Result.failure(NullPointerException("Asset failed to load!"))
             }
         } catch (e: Exception) {
-            Err(e)
+            Result.failure(e)
         }
     }
 
-    fun <T: Asset> writeAsset(ref: AssetRef, assetClass: Class<T>, asset: T): Result<Boolean, Throwable> {
+    fun <T : Asset> loadAsset(uri: Uri, assetClass: KClass<T>, maxSize: Int): Result<T> {
+        val rawJsonData = ExternalContentUtils.readTextFromUri(applicationContext, uri, maxSize).getOrElse {
+            return Result.failure(it)
+        }
+        return try {
+            val adapter = moshi.adapter(assetClass.java)
+            val asset = adapter.fromJson(rawJsonData)
+            if (asset != null) {
+                Result.success(asset)
+            } else {
+                Result.failure(NullPointerException("Asset failed to load!"))
+            }
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+
+    fun loadAssetRaw(ref: AssetRef): Result<String> {
+        return when (ref.source) {
+            is AssetSource.Assets -> {
+                try {
+                    Result.success(applicationContext.assets.open(ref.path).bufferedReader().use { it.readText() })
+                } catch (e: Exception) {
+                    Result.failure(e)
+                }
+            }
+            is AssetSource.Internal -> {
+                val file = File(applicationContext.filesDir.absolutePath + "/" + ref.path)
+                val contents = readFile(file)
+                if (contents.isBlank()) {
+                    Result.failure(Exception("File is blank!"))
+                } else {
+                    Result.success(contents)
+                }
+            }
+            else -> Result.failure(Exception("Unsupported asset ref!"))
+        }
+    }
+
+    fun <T : Asset> writeAsset(ref: AssetRef, assetClass: KClass<T>, asset: T): Result<Unit> {
         return when (ref.source) {
             AssetSource.Internal -> {
-                val adapter = moshi.adapter(assetClass)
+                val adapter = moshi.adapter(assetClass.java)
                 val rawJson = adapter.toJson(asset)
                 val file = File(applicationContext.filesDir.absolutePath + "/" + ref.path)
                 writeToFile(file, rawJson)
-                Ok(true)
+                Result.success(Unit)
             }
-            else -> Err(Exception("Can not write an asset in source '${ref.source}'"))
+            else -> Result.failure(Exception("Can not write an asset in source '${ref.source}'"))
         }
     }
 

app/src/main/java/dev/patrickgold/florisboard/ime/extension/AssetRef.kt

@@ -16,11 +16,6 @@
 
 package dev.patrickgold.florisboard.ime.extension
 
-import com.github.michaelbull.result.Err
-import com.github.michaelbull.result.Ok
-import com.github.michaelbull.result.Result
-import com.github.michaelbull.result.getOrElse
-
 /**
  * Data class which is a reference to an asset file. It indicates in which storage medium the asset
  * is as well as the relative path to it.
@@ -36,15 +31,15 @@ data class AssetRef(
     companion object {
         private const val DELIMITER: String = ":"
 
-        fun fromString(str: String): Result<AssetRef, String> {
+        fun fromString(str: String): Result<AssetRef> {
             val items = str.split(DELIMITER)
             if (items.size != 2) {
-                return Err("Unexpected length of given asset ref. Make sure that the asset ref string contains exactly 2 items separated by '$DELIMITER'!")
+                return Result.failure(Exception("Unexpected length of given asset ref. Make sure that the asset ref string contains exactly 2 items separated by '$DELIMITER'!"))
             }
             val retSource = AssetSource.fromString(items[0]).getOrElse {
-                return Err(it)
+                return Result.failure(Exception(it))
             }
-            return Ok(AssetRef(retSource, items[1]))
+            return Result.success(AssetRef(retSource, items[1]))
         }
     }
 

app/src/main/java/dev/patrickgold/florisboard/ime/extension/AssetSource.kt

@@ -16,9 +16,6 @@
 
 package dev.patrickgold.florisboard.ime.extension
 
-import com.github.michaelbull.result.Err
-import com.github.michaelbull.result.Ok
-import com.github.michaelbull.result.Result
 import java.util.*
 
 /**
@@ -52,16 +49,16 @@ sealed class AssetSource {
     companion object {
         private val externalRegex: Regex = """^external\\(([a-z]+\\.)*[a-z]+\\)\$""".toRegex()
 
-        fun fromString(str: String): Result<AssetSource, String> {
+        fun fromString(str: String): Result<AssetSource> {
             return when (val string = str.toLowerCase(Locale.ENGLISH)) {
-                "assets" -> Ok(Assets)
-                "internal" -> Ok(Internal)
+                "assets" -> Result.success(Assets)
+                "internal" -> Result.success(Internal)
                 else -> {
                     if (string.matches(externalRegex)) {
                         val packageName = string.substring(9, string.length - 1)
-                        Ok(External(packageName))
+                        Result.success(External(packageName))
                     } else {
-                        Err("'$str' is not a valid AssetSource.")
+                        Result.failure(Exception("'$str' is not a valid AssetSource."))
                     }
                 }
             }

app/src/main/java/dev/patrickgold/florisboard/ime/extension/ExternalContentUtils.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.extension
+
+import android.content.Context
+import android.net.Uri
+
+class ExternalContentUtils private constructor() {
+    companion object {
+        fun readTextFromUri(context: Context, uri: Uri, maxSize: Int): Result<String> {
+            val contentResolver = context.contentResolver
+                ?: return Result.failure(NullPointerException("System content resolver not available"))
+            val inputStream = contentResolver.openInputStream(uri)
+                ?: return Result.failure(NullPointerException("Cannot open input stream for given uri '$uri'"))
+            val assetFileDescriptor = contentResolver.openAssetFileDescriptor(uri, "r")
+                ?: return Result.failure(NullPointerException("Cannot open asset file descriptor for given uri '$uri'"))
+            if (assetFileDescriptor.length > maxSize) {
+                return Result.failure(Exception("Contents of given uri '$uri' exceeds maximum size of $maxSize bytes!"))
+            }
+            val rawText = inputStream.bufferedReader(Charsets.UTF_8).use { it.readText() }
+            return Result.success(rawText)
+        }
+
+        fun writeTextToUri(context: Context, uri: Uri, text: String): Result<Unit> {
+            val contentResolver = context.contentResolver
+                ?: return Result.failure(NullPointerException("System content resolver not available"))
+            // Must use "rwt" mode to ensure destination file length is truncated after writing.
+            val outputStream = contentResolver.openOutputStream(uri, "rwt")
+                ?: return Result.failure(NullPointerException("Cannot open output stream for given uri '$uri'"))
+            outputStream.bufferedWriter(Charsets.UTF_8).use { it.write(text) }
+            return Result.success(Unit)
+        }
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/landscapeinput/LandscapeInputUiMode.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2020 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.landscapeinput
+
+import java.util.*
+
+enum class LandscapeInputUiMode {
+    DYNAMICALLY_SHOW,
+    NEVER_SHOW,
+    ALWAYS_SHOW;
+
+    companion object {
+        fun fromString(string: String): LandscapeInputUiMode {
+            return valueOf(string.toUpperCase(Locale.ENGLISH))
+        }
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/media/MediaInputManager.kt

@@ -17,7 +17,6 @@
 package dev.patrickgold.florisboard.ime.media
 
 import android.annotation.SuppressLint
-import android.os.Handler
 import android.view.MotionEvent
 import android.view.View
 import android.widget.*
@@ -25,16 +24,13 @@ import com.google.android.material.tabs.TabLayout
 import dev.patrickgold.florisboard.R
 import dev.patrickgold.florisboard.ime.core.EditorInstance
 import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.core.InputKeyEvent
 import dev.patrickgold.florisboard.ime.core.InputView
 import dev.patrickgold.florisboard.ime.media.emoji.EmojiKeyData
 import dev.patrickgold.florisboard.ime.media.emoji.EmojiKeyboardView
 import dev.patrickgold.florisboard.ime.media.emoticon.EmoticonKeyData
 import dev.patrickgold.florisboard.ime.media.emoticon.EmoticonKeyboardView
-import dev.patrickgold.florisboard.ime.text.key.KeyCode
 import dev.patrickgold.florisboard.ime.text.key.KeyData
-import dev.patrickgold.florisboard.ime.text.key.KeyType
-import dev.patrickgold.florisboard.util.cancelAll
-import dev.patrickgold.florisboard.util.postAtScheduledRate
 import kotlinx.coroutines.*
 import timber.log.Timber
 import java.util.*
@@ -58,11 +54,10 @@ class MediaInputManager private constructor() : CoroutineScope by MainScope(),
 
     private var activeTab: Tab? = null
     private var mediaViewFlipper: ViewFlipper? = null
-    private var repeatedKeyPressHandler: Handler? = null
     private var tabLayout: TabLayout? = null
     private val tabViews = EnumMap<Tab, LinearLayout>(Tab::class.java)
 
-    var mediaViewGroup: LinearLayout? = null
+    private var mediaViewGroup: LinearLayout? = null
 
     companion object {
         private var instance: MediaInputManager? = null
@@ -80,11 +75,6 @@ class MediaInputManager private constructor() : CoroutineScope by MainScope(),
         florisboard.addEventListener(this)
     }
 
-    override fun onCreateInputView() {
-        super.onCreateInputView()
-        repeatedKeyPressHandler = Handler(florisboard.context.mainLooper)
-    }
-
     /**
      * Called when a new input view has been registered. Used to initialize all media-relevant
      * views and layouts.
@@ -145,30 +135,21 @@ class MediaInputManager private constructor() : CoroutineScope by MainScope(),
     private fun onBottomButtonEvent(view: View, event: MotionEvent?): Boolean {
         event ?: return false
         val data = when (view.id) {
-            R.id.media_input_switch_to_text_input_button -> {
-                KeyData(code = KeyCode.SWITCH_TO_TEXT_CONTEXT)
-            }
-            R.id.media_input_backspace_button -> {
-                KeyData(code = KeyCode.DELETE, type = KeyType.ENTER_EDITING)
-            }
-            else -> null
+            R.id.media_input_switch_to_text_input_button -> KeyData.SWITCH_TO_TEXT_CONTEXT
+            R.id.media_input_backspace_button -> KeyData.DELETE
+            else -> return false
         }
         when (event.actionMasked) {
             MotionEvent.ACTION_DOWN -> {
                 florisboard.keyPressVibrate()
                 florisboard.keyPressSound(data)
-                if (data?.code == KeyCode.DELETE && data.type == KeyType.ENTER_EDITING) {
-                    val delayMillis = florisboard.prefs.keyboard.longPressDelay.toLong()
-                    repeatedKeyPressHandler?.postAtScheduledRate(delayMillis, 25) {
-                        florisboard.textInputManager.sendKeyPress(data)
-                    }
-                }
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.down(data))
             }
-            MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
-                repeatedKeyPressHandler?.cancelAll()
-                if (event.actionMasked != MotionEvent.ACTION_CANCEL && data != null) {
-                    florisboard.textInputManager.sendKeyPress(data)
-                }
+            MotionEvent.ACTION_UP -> {
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.up(data))
+            }
+            MotionEvent.ACTION_CANCEL -> {
+                florisboard.textInputManager.inputEventDispatcher.send(InputKeyEvent.cancel(data))
             }
         }
         // MUST return false here so the background selector for showing a transparent bg works

app/src/main/java/dev/patrickgold/florisboard/ime/media/MediaInputView.kt

@@ -43,12 +43,11 @@ class MediaInputView : LinearLayout, FlorisBoard.EventListener,
 
     constructor(context: Context) : this(context, null)
     constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
-    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
-        florisboard?.addEventListener(this)
-    }
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
 
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
+        florisboard?.addEventListener(this)
         themeManager.registerOnThemeUpdatedListener(this)
         tabLayout = findViewById(R.id.media_input_tabs)
         switchToTextInputButton = findViewById(R.id.media_input_switch_to_text_input_button)
@@ -57,8 +56,9 @@ class MediaInputView : LinearLayout, FlorisBoard.EventListener,
     }
 
     override fun onDetachedFromWindow() {
-        super.onDetachedFromWindow()
         themeManager.unregisterOnThemeUpdatedListener(this)
+        florisboard?.removeEventListener(this)
+        super.onDetachedFromWindow()
     }
 
     override fun onThemeUpdated(theme: Theme) {

app/src/main/java/dev/patrickgold/florisboard/ime/media/emoji/EmojiCategory.kt

@@ -16,7 +16,7 @@
 
 package dev.patrickgold.florisboard.ime.media.emoji
 
-import android.annotation.SuppressLint
+import java.util.*
 
 /**
  * Enum for emoji category.
@@ -38,9 +38,8 @@ enum class EmojiCategory {
     }
 
     companion object {
-        @SuppressLint("DefaultLocale")
         fun fromString(string: String): EmojiCategory {
-            return valueOf(string.replace(" & ", "_").toUpperCase())
+            return valueOf(string.replace(" & ", "_").toUpperCase(Locale.ENGLISH))
         }
     }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/media/emoji/EmojiKeyView.kt

@@ -33,6 +33,8 @@ import dev.patrickgold.florisboard.ime.core.PrefHelper
 import dev.patrickgold.florisboard.ime.text.key.KeyHintMode
 import dev.patrickgold.florisboard.ime.theme.Theme
 import dev.patrickgold.florisboard.ime.theme.ThemeManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.MainScope
 
 /**
  * View class for managing the rendering and the events of a single emoji keyboard key.
@@ -46,7 +48,7 @@ import dev.patrickgold.florisboard.ime.theme.ThemeManager
 class EmojiKeyView(
     private val emojiKeyboardView: EmojiKeyboardView,
     val data: EmojiKeyData
-) : androidx.appcompat.widget.AppCompatTextView(emojiKeyboardView.context),
+) : androidx.appcompat.widget.AppCompatTextView(emojiKeyboardView.context), CoroutineScope by MainScope(),
     FlorisBoard.EventListener, ThemeManager.OnThemeUpdatedListener {
     private val florisboard: FlorisBoard? = FlorisBoard.getInstanceOrNull()
     private val prefs: PrefHelper = PrefHelper.getDefaultInstance(context)
@@ -64,13 +66,16 @@ class EmojiKeyView(
         triangleDrawable = ContextCompat.getDrawable(context, R.drawable.triangle_bottom_right)
 
         text = data.getCodePointsAsString()
-
-        florisboard?.addEventListener(this)
     }
 
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
-        onApplyThemeAttributes()
+        florisboard?.addEventListener(this)
+    }
+
+    override fun onDetachedFromWindow() {
+        florisboard?.removeEventListener(this)
+        super.onDetachedFromWindow()
     }
 
     /**

app/src/main/java/dev/patrickgold/florisboard/ime/media/emoji/EmojiKeyboardView.kt

@@ -101,11 +101,11 @@ class EmojiKeyboardView : LinearLayout, FlorisBoard.EventListener,
             override fun onTabUnselected(tab: TabLayout.Tab?) {}
         })
         addView(tabLayout)
-        florisboard?.addEventListener(this)
     }
 
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
+        florisboard?.addEventListener(this)
         themeManager.registerOnThemeUpdatedListener(this)
         mainScope.launch {
             layouts.await()
@@ -116,8 +116,9 @@ class EmojiKeyboardView : LinearLayout, FlorisBoard.EventListener,
     }
 
     override fun onDetachedFromWindow() {
-        super.onDetachedFromWindow()
         themeManager.unregisterOnThemeUpdatedListener(this)
+        florisboard?.removeEventListener(this)
+        super.onDetachedFromWindow()
     }
 
     /**

app/src/main/java/dev/patrickgold/florisboard/ime/media/emoji/EmojiLayoutData.kt

@@ -19,13 +19,11 @@ package dev.patrickgold.florisboard.ime.media.emoji
 import android.content.Context
 import android.graphics.Paint
 import android.graphics.Typeface
-import android.util.Log
 import androidx.core.graphics.PaintCompat
 import timber.log.Timber
 import java.io.BufferedReader
 import java.io.IOException
 import java.io.InputStreamReader
-import java.lang.Exception
 import java.util.*
 
 private const val GROUP_IDENTIFIER          = "# group: "
@@ -71,6 +69,8 @@ private fun listStringToListInt(list: List<String>): List<Int> {
     return ret.toList()
 }
 
+private var cachedEmojiLayoutMap: EmojiLayoutDataMap? = null
+
 /**
  * Reads the emoji list at the given [path] and returns an parsed [EmojiLayoutDataMap]. If the
  * given file path does not exist, an empty [EmojiLayoutDataMap] is returned.
@@ -84,6 +84,7 @@ private fun listStringToListInt(list: List<String>): List<Int> {
 fun parseRawEmojiSpecsFile(
     context: Context, path: String
 ): EmojiLayoutDataMap {
+    cachedEmojiLayoutMap?.let { return it }
     val layouts = EmojiLayoutDataMap(EmojiCategory::class.java)
     for (category in EmojiCategory.values()) {
         layouts[category] = mutableListOf()
@@ -182,5 +183,6 @@ fun parseRawEmojiSpecsFile(
             }
         }
     }
+    cachedEmojiLayoutMap = layouts
     return layouts
 }

app/src/main/java/dev/patrickgold/florisboard/ime/nlp/FlorisLanguageModel.kt

@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.nlp
+
+/**
+ * Represents the root node to a n-gram tree.
+ */
+open class NgramTree(
+    sameOrderChildren: MutableList<NgramNode> = mutableListOf(),
+    higherOrderChildren: MutableList<NgramNode> = mutableListOf()
+) : NgramNode(0, '?', -1, sameOrderChildren, higherOrderChildren)
+
+/**
+ * A node of a n-gram tree, which holds the character it represents, the corresponding frequency,
+ * a pre-computed string representing all parent characters and the current one as well as child
+ * nodes, one for the same order n-gram nodes and one for the higher order n-gram nodes.
+ */
+open class NgramNode(
+    val order: Int,
+    val char: Char,
+    val freq: Int,
+    val sameOrderChildren: MutableList<NgramNode> = mutableListOf(),
+    val higherOrderChildren: MutableList<NgramNode> = mutableListOf()
+) {
+    companion object {
+        const val FREQ_CHARACTER = -1
+        const val FREQ_WORD_MIN = 0
+        const val FREQ_WORD_MAX = 255
+        const val FREQ_WORD_FILLER = -2
+        const val FREQ_IS_POSSIBLY_OFFENSIVE = 0
+    }
+
+    val isCharacter: Boolean
+        get() = freq == FREQ_CHARACTER
+
+    val isWord: Boolean
+        get() = freq in FREQ_WORD_MIN..FREQ_WORD_MAX
+
+    val isWordFiller: Boolean
+        get() = freq == FREQ_WORD_FILLER
+
+    val isPossiblyOffensive: Boolean
+        get() = freq == FREQ_IS_POSSIBLY_OFFENSIVE
+
+    fun findWord(word: String): NgramNode? {
+        var currentNode = this
+        for ((pos, char) in word.withIndex()) {
+            val childNode = if (pos == 0) {
+                currentNode.higherOrderChildren.find { it.char == char }
+            } else {
+                currentNode.sameOrderChildren.find { it.char == char }
+            }
+            if (childNode != null) {
+                currentNode = childNode
+            } else {
+                return null
+            }
+        }
+        return if (currentNode.isWord || currentNode.isWordFiller) {
+            currentNode
+        } else {
+            null
+        }
+    }
+
+    /**
+     * This function allows to search for a given [input] word with a given [maxEditDistance] and
+     * adds all matches in the trie to the [list].
+     */
+    fun listSimilarWords(
+        input: String,
+        list: StagedSuggestionList<String, Int>,
+        word: StringBuilder,
+        allowPossiblyOffensive: Boolean,
+        maxEditDistance: Int,
+        deletionCost: Int = 0,
+        insertionCost: Int = 0,
+        substitutionCost: Int = 0,
+        pos: Int = -1
+    ) {
+        if (pos > -1) {
+            word.append(char)
+        }
+        val costSum = deletionCost + insertionCost + substitutionCost
+        if (pos > -1 && (pos + 1 == input.length) && isWord && ((isPossiblyOffensive && allowPossiblyOffensive)
+            || !isPossiblyOffensive)) {
+            // Using shift right instead of divide by 2^(costSum) as it is mathematically the
+            // same but faster.
+            if (list.canAdd(freq shr costSum)) {
+                list.add(word.toString(), freq shr costSum)
+            }
+        }
+        if (pos <= -1) {
+            for (childNode in higherOrderChildren) {
+                childNode.listSimilarWords(
+                    input, list, word, allowPossiblyOffensive, maxEditDistance, 0, 0, 0, 0
+                )
+            }
+        } else if (maxEditDistance == costSum) {
+            if (pos + 1 < input.length) {
+                sameOrderChildren.find { it.char == input[pos + 1] }?.listSimilarWords(
+                    input, list, word, allowPossiblyOffensive, maxEditDistance,
+                    deletionCost, insertionCost, substitutionCost, pos + 1
+                )
+            }
+        } else {
+            // Delete
+            if (pos + 2 < input.length) {
+                sameOrderChildren.find { it.char == input[pos + 2] }?.listSimilarWords(
+                    input, list, word, allowPossiblyOffensive, maxEditDistance,
+                    deletionCost + 1, insertionCost, substitutionCost, pos + 2
+                )
+            }
+            for (childNode in sameOrderChildren) {
+                if (pos + 1 < input.length && childNode.char == input[pos + 1]) {
+                    childNode.listSimilarWords(
+                        input, list, word, allowPossiblyOffensive, maxEditDistance,
+                        deletionCost, insertionCost, substitutionCost, pos + 1
+                    )
+                } else  {
+                    // Insert
+                    childNode.listSimilarWords(
+                        input, list, word, allowPossiblyOffensive, maxEditDistance,
+                        deletionCost, insertionCost + 1, substitutionCost, pos
+                    )
+                    if (pos + 1 < input.length) {
+                        // Substitute
+                        childNode.listSimilarWords(
+                            input, list, word, allowPossiblyOffensive, maxEditDistance,
+                            deletionCost, insertionCost, substitutionCost + 1, pos + 1
+                        )
+                    }
+                }
+            }
+        }
+        if (pos > -1) {
+            word.deleteAt(word.lastIndex)
+        }
+    }
+
+    fun listAllSameOrderWords(list: StagedSuggestionList<String, Int>, word: StringBuilder, allowPossiblyOffensive: Boolean) {
+        word.append(char)
+        if (isWord && ((isPossiblyOffensive && allowPossiblyOffensive) || !isPossiblyOffensive)) {
+            if (list.canAdd(freq)) {
+                list.add(word.toString(), freq)
+            }
+        }
+        for (childNode in sameOrderChildren) {
+            childNode.listAllSameOrderWords(list, word, allowPossiblyOffensive)
+        }
+        word.deleteAt(word.lastIndex)
+    }
+}
+
+open class FlorisLanguageModel(
+    initTreeObj: NgramTree? = null
+) : LanguageModel<String, Int> {
+    protected val ngramTree: NgramTree = initTreeObj ?: NgramTree()
+
+    override fun getNgram(vararg tokens: String): Ngram<String, Int> {
+        val ngramOut = getNgramOrNull(*tokens)
+        if (ngramOut != null) {
+            return ngramOut
+        } else {
+            throw NullPointerException("No n-gram found matching the given tokens: $tokens")
+        }
+    }
+
+    override fun getNgram(ngram: Ngram<String, Int>): Ngram<String, Int> {
+        val ngramOut = getNgramOrNull(ngram)
+        if (ngramOut != null) {
+            return ngramOut
+        } else {
+            throw NullPointerException("No n-gram found matching the given ngram: $ngram")
+        }
+    }
+
+    override fun getNgramOrNull(vararg tokens: String): Ngram<String, Int>? {
+        var currentNode: NgramNode = ngramTree
+        for (token in tokens) {
+            val childNode = currentNode.findWord(token)
+            if (childNode != null) {
+                currentNode = childNode
+            } else {
+                return null
+            }
+        }
+        return Ngram(tokens.toList().map { Token(it) }, currentNode.freq)
+    }
+
+    override fun getNgramOrNull(ngram: Ngram<String, Int>): Ngram<String, Int>? {
+        return getNgramOrNull(*ngram.tokens.toStringList().toTypedArray())
+    }
+
+    override fun hasNgram(ngram: Ngram<String, Int>, doMatchFreq: Boolean): Boolean {
+        val result = getNgramOrNull(ngram)
+        return if (result != null) {
+            if (doMatchFreq) {
+                ngram.freq == result.freq
+            } else {
+                true
+            }
+        } else {
+            false
+        }
+    }
+
+    override fun matchAllNgrams(
+        ngram: Ngram<String, Int>,
+        maxEditDistance: Int,
+        maxTokenCount: Int,
+        allowPossiblyOffensive: Boolean
+    ): List<WeightedToken<String, Int>> {
+        val ngramList = mutableListOf<WeightedToken<String, Int>>()
+        var currentNode: NgramNode = ngramTree
+        for ((t, token) in ngram.tokens.withIndex()) {
+            val word = token.data
+            if (t + 1 >= ngram.tokens.size) {
+                if (word.isNotEmpty()) {
+                    // The last word is not complete, so find all possible words and sort
+                    val splitWord = mutableListOf<Char>()
+                    var splitNode: NgramNode? = currentNode
+                    for ((pos, char) in word.withIndex()) {
+                        val node = if (pos == 0) {
+                            splitNode?.higherOrderChildren?.find { it.char == char }
+                        } else {
+                            splitNode?.sameOrderChildren?.find { it.char == char }
+                        }
+                        splitWord.add(char)
+                        splitNode = node
+                        if (node == null) {
+                            break
+                        }
+                    }
+                    if (splitNode != null) {
+                        // Input thus far is valid
+                        val wordNodes = StagedSuggestionList<String, Int>(maxTokenCount)
+                        val strBuilder = StringBuilder().append(word.substring(0, word.length - 1))
+                        splitNode.listAllSameOrderWords(wordNodes, strBuilder, allowPossiblyOffensive)
+                        ngramList.addAll(wordNodes)
+                    }
+                    if (ngramList.size < maxTokenCount) {
+                        val wordNodes = StagedSuggestionList<String, Int>(maxTokenCount)
+                        val strBuilder = StringBuilder()
+                        currentNode.listSimilarWords(word, wordNodes, strBuilder, allowPossiblyOffensive, maxEditDistance)
+                        ngramList.addAll(wordNodes)
+                    }
+                }
+            } else {
+                val node = currentNode.findWord(word)
+                if (node == null) {
+                    return ngramList
+                } else {
+                    currentNode = node
+                }
+            }
+        }
+        return ngramList
+    }
+
+    fun toFlorisMutableLanguageModel(): FlorisMutableLanguageModel = FlorisMutableLanguageModel(ngramTree)
+}
+
+open class FlorisMutableLanguageModel(
+    initTreeObj: NgramTree? = null
+) : MutableLanguageModel<String, Int>, FlorisLanguageModel(initTreeObj) {
+    override fun deleteNgram(ngram: Ngram<String, Int>) {
+        TODO("Not yet implemented")
+    }
+
+    override fun insertNgram(ngram: Ngram<String, Int>) {
+        TODO("Not yet implemented")
+    }
+
+    override fun updateNgram(ngram: Ngram<String, Int>) {
+        TODO("Not yet implemented")
+    }
+
+    fun toFlorisLanguageModel(): FlorisLanguageModel = FlorisLanguageModel(ngramTree)
+}

app/src/main/java/dev/patrickgold/florisboard/ime/nlp/LanguageModel.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.nlp
+
+/**
+ * Abstract interface for a language model. Can house any n-grams with a minimum order of one.
+ */
+interface LanguageModel<T : Any, F : Comparable<F>> {
+    /**
+     * Tries to get the n-gram for the passed [tokens]. Throws a NPE if no match could be found.
+     */
+    @Throws(NullPointerException::class)
+    fun getNgram(vararg tokens: T): Ngram<T, F>
+
+    /**
+     * Tries to get the n-gram for the passed [ngram], whereas the frequency is ignored while
+     * searching. Throws a NPE if no match could be found.
+     */
+    @Throws(NullPointerException::class)
+    fun getNgram(ngram: Ngram<T, F>): Ngram<T, F>
+
+    /**
+     * Tries to get the n-gram for the passed [tokens]. Returns null if no match could be found.
+     */
+    fun getNgramOrNull(vararg tokens: T): Ngram<T, F>?
+
+    /**
+     * Tries to get the n-gram for the passed [ngram], whereas the frequency is ignored while
+     * searching. Returns null if no match could be found.
+     */
+    fun getNgramOrNull(ngram: Ngram<T, F>): Ngram<T, F>?
+
+    /**
+     * Checks if a given [ngram] exists within this model. If [doMatchFreq] is set to true, the
+     * frequency is also matched.
+     */
+    fun hasNgram(ngram: Ngram<T, F>, doMatchFreq: Boolean = false): Boolean
+
+    /**
+     * Matches all n-grams which match the given [ngram], whereas the last item in the n-gram is
+     * is used to search for predictions.
+     */
+    fun matchAllNgrams(
+        ngram: Ngram<T, F>,
+        maxEditDistance: Int,
+        maxTokenCount: Int,
+        allowPossiblyOffensive: Boolean
+    ): List<WeightedToken<T, F>>
+}
+
+/**
+ * Mutable version of [LanguageModel].
+ */
+interface MutableLanguageModel<T : Any, F : Comparable<F>> : LanguageModel<T, F> {
+    fun deleteNgram(ngram: Ngram<T, F>)
+
+    fun insertNgram(ngram: Ngram<T, F>)
+
+    fun updateNgram(ngram: Ngram<T, F>)
+}

app/src/main/java/dev/patrickgold/florisboard/ime/nlp/Ngram.kt

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.nlp
+
+/**
+ * Abstract interface representing a n-gram of tokens. Each n-gram instance can be assigned a
+ * unique frequency [freq].
+ */
+open class Ngram<T : Any, F : Comparable<F>>(_tokens: List<Token<T>>, _freq: F) {
+    companion object {
+        /** Constant order value for unigrams. */
+        const val ORDER_UNIGRAM: Int = 1
+
+        /** Constant order value for bigrams. */
+        const val ORDER_BIGRAM: Int = 2
+
+        /** Constant order value for trigrams. */
+        const val ORDER_TRIGRAM: Int = 3
+    }
+
+    init {
+        if (_tokens.size < ORDER_UNIGRAM) {
+            throw Exception("A n-gram must contain at least 1 token!")
+        }
+    }
+
+    /**
+     * A list of tokens for this n-gram. The length of this list is guaranteed to be matching
+     * [order].
+     */
+    val tokens: List<Token<T>> = _tokens
+
+    /**
+     * The frequency value of this n-gram.
+     */
+    val freq: F = _freq
+
+    /**
+     * The order of this n-gram (1, 2, 3, ...).
+     */
+    val order: Int
+        get() = tokens.size
+}
+
+/**
+ * Abstract interface representing a token used in [Ngram].
+ */
+open class Token<T : Any>(_data: T) {
+    /**
+     * The data of this token.
+     */
+    val data: T = _data
+
+    override fun toString(): String {
+        return "Token(\"$data\")"
+    }
+
+    override fun hashCode(): Int {
+        return data.hashCode()
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Token<*>
+
+        if (data != other.data) return false
+
+        return true
+    }
+}
+
+/**
+ * Same as [Token] but allows to add a frequency value [freq].
+ */
+open class WeightedToken<T : Any, F : Comparable<F>>(_data: T, _freq: F) : Token<T>(_data) {
+    /**
+     * The frequency of this weighed token.
+     */
+    val freq: F = _freq
+
+    override fun toString(): String {
+        return "WeightedToken(\"$data\", $freq)"
+    }
+
+    override fun hashCode(): Int {
+        return data.hashCode() + 31 * freq.hashCode()
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as WeightedToken<*, *>
+
+        if (data != other.data || freq != other.freq) return false
+
+        return true
+    }
+}
+
+/**
+ * Converts a list of tokens carrying [CharSequence] data to a list of [CharSequence].
+ */
+fun List<Token<CharSequence>>.toCharSequenceList(): List<CharSequence> {
+    return this.map { it.data }
+}
+
+/**
+ * Converts a list of tokens carrying [String] data to a list of [String].
+ */
+fun List<Token<String>>.toStringList(): List<String> {
+    return this.map { it.data }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/nlp/StagedSuggestionList.kt

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.nlp
+
+class StagedSuggestionList<T : Any, F : Comparable<F>>(
+    private val maxSize: Int
+) : Collection<WeightedToken<T, F>> {
+    private val internalArray: Array<WeightedToken<T, F>?> = Array(maxSize) { null }
+    private var internalSize: Int = 0
+
+    override val size: Int
+        get() = internalSize
+
+    fun add(token: T, freq: F): Boolean {
+        if (internalSize < maxSize) {
+            internalArray[internalSize++] = WeightedToken(token, freq)
+            internalArray.sortByDescending { it?.freq }
+            return true
+        } else {
+            if (internalArray.last()!!.freq < freq) {
+                internalArray[internalArray.lastIndex] = WeightedToken(token, freq)
+                internalArray.sortByDescending { it?.freq }
+                return true
+            }
+            return false
+        }
+    }
+
+    fun canAdd(freq: F): Boolean {
+        return internalSize < maxSize || internalArray.last()!!.freq < freq
+    }
+
+    fun clear() {
+        for (n in internalArray.indices) {
+            internalArray[n] = null
+        }
+        internalSize = 0
+    }
+
+    override fun contains(element: WeightedToken<T, F>): Boolean = internalArray.contains(element)
+
+    override fun containsAll(elements: Collection<WeightedToken<T, F>>): Boolean {
+        elements.forEach { if (!contains(it)) return false }
+        return true
+    }
+
+    @Throws(IndexOutOfBoundsException::class)
+    operator fun get(index: Int): WeightedToken<T, F> {
+        val element = getOrNull(index)
+        if (element == null) {
+            throw IndexOutOfBoundsException("The specified index $index is not within the bounds of this list!")
+        } else {
+            return element
+        }
+    }
+
+    fun getOrNull(index: Int): WeightedToken<T, F>? {
+        return internalArray.getOrNull(index)
+    }
+
+    override fun isEmpty(): Boolean = internalSize <= 0
+
+    override fun iterator(): Iterator<WeightedToken<T, F>> {
+        return StagedIterator(this)
+    }
+
+    class StagedIterator<T : Any, F : Comparable<F>> internal constructor (
+        private val stagedSuggestionList: StagedSuggestionList<T, F>
+    ) : Iterator<WeightedToken<T, F>> {
+        var index = 0
+
+        override fun next(): WeightedToken<T, F> = stagedSuggestionList[index++]
+
+        override fun hasNext(): Boolean = stagedSuggestionList.getOrNull(index) != null
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/nlp/TextProcessor.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.nlp
+
+class TextProcessor {
+    data class Word(
+        val word: String,
+        val isPossiblyOffensive: Boolean = false
+    )
+}

app/src/main/java/dev/patrickgold/florisboard/ime/onehanded/OneHandedMode.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.onehanded
+
+/**
+ * Static object which contains all possible one-handed mode strings.
+ */
+object OneHandedMode {
+    const val OFF: String = "off"
+    const val START: String = "start"
+    const val END: String = "end"
+}

app/src/main/java/dev/patrickgold/florisboard/ime/onehanded/OneHandedPanel.kt

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2021 Patrick Goldinger
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.patrickgold.florisboard.ime.onehanded
+
+import android.content.Context
+import android.content.res.ColorStateList
+import android.util.AttributeSet
+import android.view.Gravity
+import android.widget.ImageButton
+import android.widget.LinearLayout
+import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.theme.Theme
+import dev.patrickgold.florisboard.ime.theme.ThemeManager
+
+class OneHandedPanel : LinearLayout, ThemeManager.OnThemeUpdatedListener {
+    private var florisboard: FlorisBoard? = null
+    private var themeManager: ThemeManager? = null
+
+    private var closeBtn: ImageButton? = null
+    private var moveBtn: ImageButton? = null
+
+    private val panelSide: String
+
+    constructor(context: Context) : this(context, null)
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
+        context.obtainStyledAttributes(attrs, R.styleable.OneHandedPanel).apply {
+            panelSide = getString(R.styleable.OneHandedPanel_panelSide) ?: OneHandedMode.START
+            recycle()
+        }
+        orientation = VERTICAL
+        gravity = Gravity.CENTER_VERTICAL
+    }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        florisboard = FlorisBoard.getInstanceOrNull()
+        themeManager = ThemeManager.defaultOrNull()
+
+        closeBtn = findViewWithTag("one_handed_ctrl_close")
+        closeBtn?.setOnClickListener {
+            florisboard?.let {
+                it.prefs.keyboard.oneHandedMode = OneHandedMode.OFF
+                it.updateOneHandedPanelVisibility()
+            }
+        }
+        moveBtn = findViewWithTag("one_handed_ctrl_move")
+        moveBtn?.setOnClickListener {
+            florisboard?.let {
+                it.prefs.keyboard.oneHandedMode = panelSide
+                it.updateOneHandedPanelVisibility()
+            }
+        }
+
+        themeManager?.registerOnThemeUpdatedListener(this)
+    }
+
+    override fun onDetachedFromWindow() {
+        super.onDetachedFromWindow()
+        florisboard = null
+        themeManager?.unregisterOnThemeUpdatedListener(this)
+        themeManager = null
+
+        closeBtn?.setOnClickListener(null)
+        closeBtn = null
+        moveBtn?.setOnClickListener(null)
+        moveBtn = null
+    }
+
+    override fun onThemeUpdated(theme: Theme) {
+        setBackgroundColor(theme.getAttr(Theme.Attr.ONE_HANDED_BACKGROUND).toSolidColor().color)
+        ColorStateList.valueOf(theme.getAttr(Theme.Attr.ONE_HANDED_FOREGROUND).toSolidColor().color).also {
+            closeBtn?.imageTintList = it
+            moveBtn?.imageTintList = it
+        }
+        closeBtn?.invalidate()
+        moveBtn?.invalidate()
+        invalidate()
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        val florisboard = florisboard ?: return super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+        val width = (florisboard.inputView?.measuredWidth ?: 0) *
+            ((100 - florisboard.prefs.keyboard.oneHandedModeScaleFactor) / 100.0f)
+        super.onMeasure(MeasureSpec.makeMeasureSpec(width.toInt(),  MeasureSpec.EXACTLY), heightMeasureSpec)
+    }
+}

app/src/main/java/dev/patrickgold/florisboard/ime/popup/PopupExtendedView.kt

@@ -35,8 +35,12 @@ import kotlin.math.min
 class PopupExtendedView : View, ThemeManager.OnThemeUpdatedListener {
     private val themeManager: ThemeManager = ThemeManager.default()
 
-    private val activeBackgroundDrawable: PaintDrawable = PaintDrawable()
-    private var backgroundDrawable: PaintDrawable = PaintDrawable()
+    private val activeBackgroundDrawable: PaintDrawable = PaintDrawable().apply {
+        setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
+    }
+    private var backgroundDrawable: PaintDrawable = PaintDrawable().apply {
+        setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
+    }
     private val labelPaint: Paint = Paint().apply {
         alpha = 255
         color = 0
@@ -80,6 +84,7 @@ class PopupExtendedView : View, ThemeManager.OnThemeUpdatedListener {
     init {
         visibility = GONE
         background = backgroundDrawable
+        elevation = ViewLayoutUtils.convertDpToPixel(4.0f, context)
     }
 
     override fun onAttachedToWindow() {
@@ -88,20 +93,17 @@ class PopupExtendedView : View, ThemeManager.OnThemeUpdatedListener {
     }
 
     override fun onDetachedFromWindow() {
-        super.onDetachedFromWindow()
         themeManager.unregisterOnThemeUpdatedListener(this)
+        super.onDetachedFromWindow()
     }
 
     override fun onThemeUpdated(theme: Theme) {
         activeBackgroundDrawable.apply {
             setTint(theme.getAttr(Theme.Attr.POPUP_BACKGROUND_ACTIVE).toSolidColor().color)
-            setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
         }
         backgroundDrawable.apply {
             setTint(theme.getAttr(Theme.Attr.POPUP_BACKGROUND).toSolidColor().color)
-            setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
         }
-        elevation = ViewLayoutUtils.convertDpToPixel(4.0f, context)
         labelPaint.color = theme.getAttr(Theme.Attr.POPUP_FOREGROUND).toSolidColor().color
         tldPaint.color = theme.getAttr(Theme.Attr.POPUP_FOREGROUND).toSolidColor().color
         if (isShowing) {

app/src/main/java/dev/patrickgold/florisboard/ime/popup/PopupLayerView.kt

@@ -18,14 +18,21 @@ package dev.patrickgold.florisboard.ime.popup
 
 import android.annotation.SuppressLint
 import android.content.Context
+import android.graphics.Rect
 import android.util.AttributeSet
 import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
 import android.widget.FrameLayout
-import dev.patrickgold.florisboard.ime.core.PrefHelper
+import dev.patrickgold.florisboard.ime.clip.ClipboardPopupManager
+import dev.patrickgold.florisboard.ime.clip.ClipboardPopupView
+import timber.log.Timber
 
+/**
+ * Basic helper view class which acts as a non-interactive layer view, which sits above the whole
+ * input UI. Automatically rejects any touch events and passes it through to the View below.
+ */
 class PopupLayerView : FrameLayout {
-    private val prefs: PrefHelper = PrefHelper.getDefaultInstance(context)
-
     constructor(context: Context) : this(context, null)
     constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
     constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
@@ -34,14 +41,34 @@ class PopupLayerView : FrameLayout {
         background = null
         isClickable = false
         isFocusable = false
+        layoutParams = ViewGroup.LayoutParams(
+            ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT
+        )
     }
 
+    var clipboardPopupManager: ClipboardPopupManager? = null
+    var intercept: ClipboardPopupView? = null
+    var shouldIntercept = true
+
     override fun onInterceptTouchEvent(ev: MotionEvent?): Boolean {
+        if (ev != null) {
+            intercept?.run {
+                val viewRect = Rect()
+                getGlobalVisibleRect(viewRect)
+                return when {
+                    !viewRect.contains(ev.x.toInt(), ev.y.toInt()) -> {
+                        clipboardPopupManager?.hide()
+                        true
+                    }
+                    else -> false
+                }
+            }
+        }
         return true
     }
 
     @SuppressLint("ClickableViewAccessibility")
-    override fun onTouchEvent(event: MotionEvent?): Boolean {
+    override fun onTouchEvent(ev: MotionEvent?): Boolean {
         return false
     }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/popup/PopupManager.kt

@@ -17,7 +17,9 @@
 package dev.patrickgold.florisboard.ime.popup
 
 import android.content.res.Configuration
-import android.view.*
+import android.view.Gravity
+import android.view.MotionEvent
+import android.view.View
 import androidx.core.content.ContextCompat.getDrawable
 import dev.patrickgold.florisboard.R
 import dev.patrickgold.florisboard.ime.media.emoji.EmojiKeyData
@@ -46,7 +48,8 @@ class PopupManager<T_KBD: View, T_KV: View>(
         KeyCode.ENTER,
         KeyCode.LANGUAGE_SWITCH,
         KeyCode.SWITCH_TO_TEXT_CONTEXT,
-        KeyCode.SWITCH_TO_MEDIA_CONTEXT
+        KeyCode.SWITCH_TO_MEDIA_CONTEXT,
+        KeyCode.SWITCH_TO_CLIPBOARD_CONTEXT
     )
     private var keyPopupWidth: Int
     private var keyPopupHeight: Int
@@ -106,12 +109,18 @@ class PopupManager<T_KBD: View, T_KV: View>(
                             PopupExtendedView.Element.Icon(it, adjustedIndex)
                         } ?: PopupExtendedView.Element.Undefined
                     }
+                    KeyCode.SWITCH_TO_CLIPBOARD_CONTEXT -> {
+                        getDrawable(keyView.context, R.drawable.ic_assignment)?.let {
+                            PopupExtendedView.Element.Icon(it, adjustedIndex)
+                        } ?: PopupExtendedView.Element.Undefined
+                    }
                     KeyCode.URI_COMPONENT_TLD -> {
                         PopupExtendedView.Element.Tld(
                             keyView.data.popup[adjustedIndex].label, adjustedIndex
                         )
                     }
-                    KeyCode.TOGGLE_ONE_HANDED_MODE -> {
+                    KeyCode.TOGGLE_ONE_HANDED_MODE_LEFT,
+                    KeyCode.TOGGLE_ONE_HANDED_MODE_RIGHT -> {
                         getDrawable(keyView.context, R.drawable.ic_smartphone)?.let {
                             PopupExtendedView.Element.Icon(it, adjustedIndex)
                         } ?: PopupExtendedView.Element.Undefined
@@ -143,10 +152,10 @@ class PopupManager<T_KBD: View, T_KV: View>(
             when (keyboardView.resources.configuration.orientation) {
                 Configuration.ORIENTATION_LANDSCAPE -> {
                     if (keyboardView.isSmartbarKeyboardView) {
-                        keyPopupWidth = (keyView.measuredWidth * 0.6f).toInt()
+                        keyPopupWidth = (keyView.measuredWidth * 1.0f).toInt()
                         keyPopupHeight = (keyboardView.desiredKeyHeight * 3.0f * 1.2f).toInt()
                     } else {
-                        keyPopupWidth = (keyboardView.desiredKeyWidth * 0.6f).toInt()
+                        keyPopupWidth = (keyboardView.desiredKeyWidth * 1.0f).toInt()
                         keyPopupHeight = (keyboardView.desiredKeyHeight * 3.0f).toInt()
                     }
                 }

app/src/main/java/dev/patrickgold/florisboard/ime/popup/PopupView.kt

@@ -34,7 +34,9 @@ import dev.patrickgold.florisboard.util.ViewLayoutUtils
 class PopupView : View, ThemeManager.OnThemeUpdatedListener {
     private val themeManager: ThemeManager = ThemeManager.default()
 
-    private var backgroundDrawable: PaintDrawable = PaintDrawable()
+    private var backgroundDrawable: PaintDrawable = PaintDrawable().apply {
+        setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
+    }
     private val labelPaint: Paint = Paint().apply {
         alpha = 255
         color = 0
@@ -86,7 +88,6 @@ class PopupView : View, ThemeManager.OnThemeUpdatedListener {
     override fun onThemeUpdated(theme: Theme) {
         backgroundDrawable.apply {
             setTint(theme.getAttr(Theme.Attr.POPUP_BACKGROUND).toSolidColor().color)
-            setCornerRadius(ViewLayoutUtils.convertDpToPixel(6.0f, context))
         }
         elevation = ViewLayoutUtils.convertDpToPixel(4.0f, context)
         threeDotsDrawable?.apply {

app/src/main/java/dev/patrickgold/florisboard/ime/text/TextInputManager.kt

@@ -16,21 +16,25 @@
 
 package dev.patrickgold.florisboard.ime.text
 
-import android.content.Context
-import android.os.Handler
+import android.animation.ObjectAnimator
+import android.animation.ValueAnimator
 import android.view.KeyEvent
-import android.view.inputmethod.*
 import android.widget.LinearLayout
 import android.widget.Toast
 import android.widget.ViewFlipper
+import dev.patrickgold.florisboard.BuildConfig
 import dev.patrickgold.florisboard.R
+import dev.patrickgold.florisboard.ime.clip.provider.ClipboardItem
 import dev.patrickgold.florisboard.ime.core.*
+import dev.patrickgold.florisboard.ime.dictionary.Dictionary
+import dev.patrickgold.florisboard.ime.dictionary.DictionaryManager
+import dev.patrickgold.florisboard.ime.extension.AssetRef
+import dev.patrickgold.florisboard.ime.extension.AssetSource
+import dev.patrickgold.florisboard.ime.nlp.Token
+import dev.patrickgold.florisboard.ime.nlp.toStringList
 import dev.patrickgold.florisboard.ime.text.editing.EditingKeyboardView
 import dev.patrickgold.florisboard.ime.text.gestures.SwipeAction
-import dev.patrickgold.florisboard.ime.text.key.KeyCode
-import dev.patrickgold.florisboard.ime.text.key.KeyData
-import dev.patrickgold.florisboard.ime.text.key.KeyType
-import dev.patrickgold.florisboard.ime.text.key.KeyVariation
+import dev.patrickgold.florisboard.ime.text.key.*
 import dev.patrickgold.florisboard.ime.text.keyboard.KeyboardMode
 import dev.patrickgold.florisboard.ime.text.keyboard.KeyboardView
 import dev.patrickgold.florisboard.ime.text.layout.LayoutManager
@@ -38,6 +42,7 @@ import dev.patrickgold.florisboard.ime.text.smartbar.SmartbarView
 import kotlinx.coroutines.*
 import timber.log.Timber
 import java.util.*
+import kotlin.math.roundToLong
 
 /**
  * TextInputManager is responsible for managing everything which is related to text input. All of
@@ -50,7 +55,7 @@ import java.util.*
  * TextInputManager is also the hub in the communication between the system, the active editor
  * instance and the Smartbar.
  */
-class TextInputManager private constructor() : CoroutineScope by MainScope(),
+class TextInputManager private constructor() : CoroutineScope by MainScope(), InputKeyEventReceiver,
     FlorisBoard.EventListener, SmartbarView.EventListener {
 
     private val florisboard = FlorisBoard.getInstance()
@@ -58,28 +63,41 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         get() = florisboard.activeEditorInstance
 
     private var activeKeyboardMode: KeyboardMode? = null
+    private var animator: ObjectAnimator? = null
     private val keyboardViews = EnumMap<KeyboardMode, KeyboardView>(KeyboardMode::class.java)
     private var editingKeyboardView: EditingKeyboardView? = null
-    private val osHandler = Handler()
+    private var loadingPlaceholderKeyboard: KeyboardView? = null
     private var textViewFlipper: ViewFlipper? = null
-    var textViewGroup: LinearLayout? = null
+    private var textViewGroup: LinearLayout? = null
+    private val dictionaryManager: DictionaryManager = DictionaryManager.default()
+    private var activeDictionary: Dictionary<String, Int>? = null
+    val inputEventDispatcher: InputEventDispatcher = InputEventDispatcher.new(
+        parentScope = this,
+        repeatableKeyCodes = intArrayOf(
+            KeyCode.ARROW_DOWN,
+            KeyCode.ARROW_LEFT,
+            KeyCode.ARROW_RIGHT,
+            KeyCode.ARROW_UP,
+            KeyCode.DELETE,
+            KeyCode.FORWARD_DELETE
+        )
+    )
 
     var keyVariation: KeyVariation = KeyVariation.NORMAL
     val layoutManager = LayoutManager(florisboard)
     private var smartbarView: SmartbarView? = null
 
-    // Caps/Space related properties
+    // Caps/Shift related properties
     var caps: Boolean = false
         private set
     var capsLock: Boolean = false
         private set
-    private var hasCapsRecentlyChanged: Boolean = false
-    private var hasSpaceRecentlyPressed: Boolean = false
+    private var newCapsState: Boolean = false
 
     // Composing text related properties
     var isManualSelectionMode: Boolean = false
-    private var isManualSelectionModeLeft: Boolean = false
-    private var isManualSelectionModeRight: Boolean = false
+    private var isManualSelectionModeStart: Boolean = false
+    private var isManualSelectionModeEnd: Boolean = false
 
     companion object {
         private var instance: TextInputManager? = null
@@ -104,6 +122,7 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     override fun onCreate() {
         Timber.i("onCreate()")
 
+        inputEventDispatcher.keyEventReceiver = this
         var subtypes = florisboard.subtypeManager.subtypes
         if (subtypes.isEmpty()) {
             subtypes = listOf(Subtype.DEFAULT)
@@ -115,6 +134,10 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         }
     }
 
+    override fun onCreateInputView() {
+        keyboardViews.clear()
+    }
+
     private suspend fun addKeyboardView(mode: KeyboardMode) {
         val keyboardView = KeyboardView(florisboard.context)
         keyboardView.computedLayout = layoutManager.fetchComputedLayoutAsync(mode, florisboard.activeSubtype, florisboard.prefs).await()
@@ -128,14 +151,38 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     override fun onRegisterInputView(inputView: InputView) {
         Timber.i("onRegisterInputView(inputView)")
 
-        launch(Dispatchers.Main) {
-            textViewGroup = inputView.findViewById(R.id.text_input)
-            textViewFlipper = inputView.findViewById(R.id.text_input_view_flipper)
-            editingKeyboardView = inputView.findViewById(R.id.editing)
+        textViewGroup = inputView.findViewById(R.id.text_input)
+        textViewFlipper = inputView.findViewById(R.id.text_input_view_flipper)
+        editingKeyboardView = inputView.findViewById(R.id.editing)
+        loadingPlaceholderKeyboard = inputView.findViewById(R.id.keyboard_preview)
 
+        launch(Dispatchers.Main) {
+            textViewGroup?.let {
+                animator = ObjectAnimator.ofFloat(it, "alpha", 0.9f, 1.0f).apply {
+                    duration = 125
+                    repeatCount = ValueAnimator.INFINITE
+                    repeatMode = ValueAnimator.REVERSE
+                    start()
+                    launch {
+                        delay(duration)
+                        try {
+                            duration = 500
+                            setFloatValues(1.0f, 0.4f)
+                        } catch (_: Exception) {}
+                    }
+                }
+            }
             val activeKeyboardMode = getActiveKeyboardMode()
             addKeyboardView(activeKeyboardMode)
             setActiveKeyboardMode(activeKeyboardMode)
+            animator?.cancel()
+            textViewGroup?.let {
+                animator = ObjectAnimator.ofFloat(it, "alpha", it.alpha, 1.0f).apply {
+                    duration = (((1.0f - it.alpha) / 0.6f) * 125f).roundToLong()
+                    repeatCount = 0
+                    start()
+                }
+            }
             for (mode in KeyboardMode.values()) {
                 if (mode != activeKeyboardMode && mode != KeyboardMode.SMARTBAR_NUMBER_ROW) {
                     addKeyboardView(mode)
@@ -149,14 +196,21 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         smartbarView?.setEventListener(this)
     }
 
+    fun unregisterSmartbarView(view: SmartbarView) {
+        if (smartbarView == view) {
+            smartbarView = null
+        }
+    }
+
     /**
      * Cancels all coroutines and cleans up.
      */
     override fun onDestroy() {
         Timber.i("onDestroy()")
 
+        inputEventDispatcher.keyEventReceiver = null
+        inputEventDispatcher.close()
         cancel()
-        osHandler.removeCallbacksAndMessages(null)
         layoutManager.onDestroy()
         instance = null
     }
@@ -219,6 +273,7 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         }
         updateCapsState()
         setActiveKeyboardMode(keyboardMode)
+        smartbarView?.setCandidateSuggestionWords(System.nanoTime(), null)
         smartbarView?.updateSmartbarState()
     }
 
@@ -246,24 +301,31 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     /**
      * Sets [activeKeyboardMode] and updates the [SmartbarView.isQuickActionsVisible] state.
      */
-    fun setActiveKeyboardMode(mode: KeyboardMode) {
+    private fun setActiveKeyboardMode(mode: KeyboardMode) {
         textViewFlipper?.displayedChild = textViewFlipper?.indexOfChild(when (mode) {
             KeyboardMode.EDITING -> editingKeyboardView
             else -> keyboardViews[mode]
-        }) ?: 0
+        })?.coerceAtLeast(0) ?: 0
         keyboardViews[mode]?.updateVisibility()
         keyboardViews[mode]?.requestLayout()
         keyboardViews[mode]?.requestLayoutAllKeys()
         activeKeyboardMode = mode
         isManualSelectionMode = false
-        isManualSelectionModeLeft = false
-        isManualSelectionModeRight = false
+        isManualSelectionModeStart = false
+        isManualSelectionModeEnd = false
         smartbarView?.isQuickActionsVisible = false
         smartbarView?.updateSmartbarState()
     }
 
     override fun onSubtypeChanged(newSubtype: Subtype) {
         launch {
+            if (activeEditorInstance.isComposingEnabled) {
+                withContext(Dispatchers.IO) {
+                    dictionaryManager.loadDictionary(AssetRef(AssetSource.Assets,"ime/dict/en.flict")).let {
+                        activeDictionary = it.getOrDefault(null)
+                    }
+                }
+            }
             val keyboardView = keyboardViews[KeyboardMode.CHARACTERS]
             keyboardView?.computedLayout = layoutManager.fetchComputedLayoutAsync(KeyboardMode.CHARACTERS, newSubtype, florisboard.prefs).await()
             keyboardView?.updateVisibility()
@@ -275,13 +337,39 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
      * and passing this info on to the [SmartbarView] to turn it into candidate suggestions.
      */
     override fun onUpdateSelection() {
-        if (!activeEditorInstance.isNewSelectionInBoundsOfOld) {
-            isManualSelectionMode = false
-            isManualSelectionModeLeft = false
-            isManualSelectionModeRight = false
+        if (!inputEventDispatcher.isPressed(KeyCode.SHIFT)) {
+            updateCapsState()
         }
-        updateCapsState()
         smartbarView?.updateSmartbarState()
+        if (BuildConfig.DEBUG) {
+            Timber.i("current word: ${activeEditorInstance.cachedInput.currentWord.text}")
+        }
+        if (activeEditorInstance.isComposingEnabled && !inputEventDispatcher.isPressed(KeyCode.DELETE)) {
+            if (activeEditorInstance.shouldReevaluateComposingSuggestions) {
+                activeEditorInstance.shouldReevaluateComposingSuggestions = false
+                activeDictionary?.let {
+                    launch(Dispatchers.Default) {
+                        val startTime = System.nanoTime()
+                        val suggestions = it.getTokenPredictions(
+                            precedingTokens = listOf(),
+                            currentToken = Token(activeEditorInstance.cachedInput.currentWord.text),
+                            maxSuggestionCount = 16,
+                            allowPossiblyOffensive = !florisboard.prefs.suggestion.blockPossiblyOffensive
+                        ).toStringList()
+                        if (BuildConfig.DEBUG) {
+                            val elapsed = (System.nanoTime() - startTime) / 1000.0
+                            Timber.i("sugg fetch time: $elapsed us")
+                        }
+                        withContext(Dispatchers.Main) {
+                            smartbarView?.setCandidateSuggestionWords(startTime, suggestions)
+                            smartbarView?.updateCandidateSuggestionCapsState()
+                        }
+                    }
+                }
+            } else {
+                smartbarView?.setCandidateSuggestionWords(System.nanoTime(), null)
+            }
+        }
     }
 
     override fun onPrimaryClipChanged() {
@@ -296,9 +384,7 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         if (!capsLock) {
             caps = florisboard.prefs.correction.autoCapitalization &&
                     activeEditorInstance.cursorCapsMode != InputAttributes.CapsMode.NONE
-            launch(Dispatchers.Main) {
-                keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
-            }
+            keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
         }
     }
 
@@ -307,20 +393,24 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
      * class.
      */
     fun executeSwipeAction(swipeAction: SwipeAction) {
-        when (swipeAction) {
-            SwipeAction.DELETE_WORD -> handleDeleteWord()
-            SwipeAction.INSERT_SPACE -> handleSpace()
-            SwipeAction.MOVE_CURSOR_DOWN -> handleArrow(KeyCode.ARROW_DOWN)
-            SwipeAction.MOVE_CURSOR_UP -> handleArrow(KeyCode.ARROW_UP)
-            SwipeAction.MOVE_CURSOR_LEFT -> handleArrow(KeyCode.ARROW_LEFT)
-            SwipeAction.MOVE_CURSOR_RIGHT -> handleArrow(KeyCode.ARROW_RIGHT)
-            SwipeAction.MOVE_CURSOR_START_OF_LINE -> handleArrow(KeyCode.MOVE_HOME)
-            SwipeAction.MOVE_CURSOR_END_OF_LINE -> handleArrow(KeyCode.MOVE_END)
-            SwipeAction.SHIFT -> handleShift()
-            SwipeAction.SHOW_INPUT_METHOD_PICKER -> sendKeyPress(
-                KeyData(type = KeyType.FUNCTION, code = KeyCode.SHOW_INPUT_METHOD_PICKER)
-            )
-            else -> {}
+        val keyData = when (swipeAction) {
+            SwipeAction.DELETE_WORD -> KeyData.DELETE_WORD
+            SwipeAction.INSERT_SPACE -> KeyData.SPACE
+            SwipeAction.MOVE_CURSOR_DOWN -> KeyData.ARROW_DOWN
+            SwipeAction.MOVE_CURSOR_UP -> KeyData.ARROW_UP
+            SwipeAction.MOVE_CURSOR_LEFT -> KeyData.ARROW_LEFT
+            SwipeAction.MOVE_CURSOR_RIGHT -> KeyData.ARROW_RIGHT
+            SwipeAction.MOVE_CURSOR_START_OF_LINE -> KeyData.MOVE_START_OF_LINE
+            SwipeAction.MOVE_CURSOR_END_OF_LINE -> KeyData.MOVE_END_OF_LINE
+            SwipeAction.MOVE_CURSOR_START_OF_PAGE -> KeyData.MOVE_START_OF_PAGE
+            SwipeAction.MOVE_CURSOR_END_OF_PAGE -> KeyData.MOVE_END_OF_PAGE
+            SwipeAction.SHIFT -> KeyData.SHIFT
+            SwipeAction.SWITCH_TO_CLIPBOARD_CONTEXT -> KeyData.SWITCH_TO_CLIPBOARD_CONTEXT
+            SwipeAction.SHOW_INPUT_METHOD_PICKER -> KeyData.SHOW_INPUT_METHOD_PICKER
+            else -> null
+        }
+        if (keyData != null) {
+            inputEventDispatcher.send(InputKeyEvent.downUp(keyData))
         }
     }
 
@@ -328,6 +418,14 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         setActiveKeyboardMode(KeyboardMode.CHARACTERS)
     }
 
+    override fun onSmartbarCandidatePressed(word: String) {
+        activeEditorInstance.commitCompletion(word)
+    }
+
+    override fun onSmartbarClipboardCandidatePressed(clipboardItem: ClipboardItem) {
+        activeEditorInstance.commitClipboardItem(clipboardItem)
+    }
+
     override fun onSmartbarPrivateModeButtonClicked() {
         Toast.makeText(florisboard.context, R.string.private_mode_dialog__title, Toast.LENGTH_LONG).show()
     }
@@ -343,13 +441,13 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
             }
             R.id.quick_action_switch_to_media_context -> florisboard.setActiveInput(R.id.media_input)
             R.id.quick_action_open_settings -> florisboard.launchSettings()
-            R.id.quick_action_one_handed_toggle -> florisboard.toggleOneHandedMode()
+            R.id.quick_action_one_handed_toggle -> florisboard.toggleOneHandedMode(isRight = true)
             R.id.quick_action_undo -> {
-                handleUndo()
+                activeEditorInstance.performUndo()
                 return
             }
             R.id.quick_action_redo -> {
-                handleRedo()
+                activeEditorInstance.performRedo()
                 return
             }
         }
@@ -357,23 +455,13 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
         smartbarView?.updateSmartbarState()
     }
 
-    private fun handleUndo(){
-        activeEditorInstance.performUndo()
-    }
-
-    private fun handleRedo(){
-        activeEditorInstance.performRedo()
-    }
-
     /**
      * Handles a [KeyCode.DELETE] event.
      */
     private fun handleDelete() {
-        hasCapsRecentlyChanged = false
-        hasSpaceRecentlyPressed = false
         isManualSelectionMode = false
-        isManualSelectionModeLeft = false
-        isManualSelectionModeRight = false
+        isManualSelectionModeStart = false
+        isManualSelectionModeEnd = false
         activeEditorInstance.deleteBackwards()
     }
 
@@ -381,11 +469,9 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
      * Handles a [KeyCode.DELETE_WORD] event.
      */
     private fun handleDeleteWord() {
-        hasCapsRecentlyChanged = false
-        hasSpaceRecentlyPressed = false
         isManualSelectionMode = false
-        isManualSelectionModeLeft = false
-        isManualSelectionModeRight = false
+        isManualSelectionModeStart = false
+        isManualSelectionModeEnd = false
         activeEditorInstance.deleteWordsBeforeCursor(1)
     }
 
@@ -393,8 +479,6 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
      * Handles a [KeyCode.ENTER] event.
      */
     private fun handleEnter() {
-        hasCapsRecentlyChanged = false
-        hasSpaceRecentlyPressed = false
         if (activeEditorInstance.imeOptions.flagNoEnterAction) {
             activeEditorInstance.performEnter()
         } else {
@@ -413,44 +497,82 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     }
 
     /**
-     * Handles a [KeyCode.SHIFT] event.
+     * Handles a [KeyCode.LANGUAGE_SWITCH] event. Also handles if the language switch should cycle
+     * FlorisBoard internal or system-wide.
      */
-    private fun handleShift() {
-        if (hasCapsRecentlyChanged) {
-            osHandler.removeCallbacksAndMessages(null)
+    private fun handleLanguageSwitch() {
+        when (florisboard.prefs.keyboard.utilityKeyAction) {
+            UtilityKeyAction.DYNAMIC_SWITCH_LANGUAGE_EMOJIS,
+            UtilityKeyAction.SWITCH_LANGUAGE -> florisboard.switchToNextSubtype()
+            else -> florisboard.switchToNextKeyboard()
+        }
+    }
+
+    /**
+     * Handles a [KeyCode.SHIFT] down event.
+     */
+    private fun handleShiftDown(ev: InputKeyEvent) {
+        if (ev.isConsecutiveEventOf(inputEventDispatcher.lastKeyEventDown, florisboard.prefs.keyboard.longPressDelay.toLong())) {
+            newCapsState = true
             caps = true
             capsLock = true
-            hasCapsRecentlyChanged = false
         } else {
-            caps = !caps
+            newCapsState = !caps
+            caps = true
             capsLock = false
-            hasCapsRecentlyChanged = true
-            osHandler.postDelayed({
-                hasCapsRecentlyChanged = false
-            }, 300)
         }
         keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
+        smartbarView?.updateCandidateSuggestionCapsState()
+    }
+
+    /**
+     * Handles a [KeyCode.SHIFT] up event.
+     */
+    private fun handleShiftUp() {
+        caps = newCapsState
+        keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
+        smartbarView?.updateCandidateSuggestionCapsState()
+    }
+
+    /**
+     * Handles a [KeyCode.SHIFT] cancel event.
+     */
+    private fun handleShiftCancel() {
+        caps = false
+        capsLock = false
+        keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
+        smartbarView?.updateCandidateSuggestionCapsState()
+    }
+
+    /**
+     * Handles a [KeyCode.SHIFT] up event.
+     */
+    private fun handleShiftLock() {
+        val lastKeyEvent = inputEventDispatcher.lastKeyEventDown ?: return
+        if (lastKeyEvent.data.code == KeyCode.SHIFT && lastKeyEvent.action == InputKeyEvent.Action.DOWN) {
+            newCapsState = true
+            caps = true
+            capsLock = true
+            keyboardViews[activeKeyboardMode]?.invalidateAllKeys()
+            smartbarView?.updateCandidateSuggestionCapsState()
+        }
     }
 
     /**
      * Handles a [KeyCode.SPACE] event. Also handles the auto-correction of two space taps if
      * enabled by the user.
      */
-    private fun handleSpace() {
+    private fun handleSpace(ev: InputKeyEvent) {
+        if (florisboard.prefs.keyboard.spaceBarSwitchesToCharacters && getActiveKeyboardMode() != KeyboardMode.CHARACTERS) {
+            setActiveKeyboardMode(KeyboardMode.CHARACTERS)
+        }
         if (florisboard.prefs.correction.doubleSpacePeriod) {
-            if (hasSpaceRecentlyPressed) {
-                osHandler.removeCallbacksAndMessages(null)
+            if (ev.isConsecutiveEventOf(inputEventDispatcher.lastKeyEventUp, florisboard.prefs.keyboard.longPressDelay.toLong())) {
                 val text = activeEditorInstance.getTextBeforeCursor(2)
                 if (text.length == 2 && !text.matches("""[.!?‽\s][\s]""".toRegex())) {
                     activeEditorInstance.deleteBackwards()
                     activeEditorInstance.commitText(".")
                 }
-                hasSpaceRecentlyPressed = false
-            } else {
-                hasSpaceRecentlyPressed = true
-                osHandler.postDelayed({
-                    hasSpaceRecentlyPressed = false
-                }, 300)
             }
         }
         activeEditorInstance.commitText(KeyCode.SPACE.toChar().toString())
@@ -459,114 +581,64 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     /**
      * Handles [KeyCode] arrow and move events, behaves differently depending on text selection.
      */
-    private fun handleArrow(code: Int) = activeEditorInstance.apply {
-        val selectionStartMin = 0
-        val selectionEndMax = cachedText.length
-        if (selection.isSelectionMode && isManualSelectionMode) {
-            // Text is selected and it is manual selection -> Expand selection depending on started
-            //  direction.
-            when (code) {
-                KeyCode.ARROW_DOWN -> {}
-                KeyCode.ARROW_LEFT -> {
-                    if (isManualSelectionModeLeft) {
-                        setSelection(
-                            (selection.start - 1).coerceAtLeast(selectionStartMin),
-                            selection.end
-                        )
-                    } else {
-                        setSelection(selection.start, selection.end - 1)
-                    }
-                }
-                KeyCode.ARROW_RIGHT -> {
-                    if (isManualSelectionModeRight) {
-                        setSelection(
-                            selection.start,
-                            (selection.end + 1).coerceAtMost(selectionEndMax)
-                        )
-                    } else {
-                        setSelection(selection.start + 1, selection.end)
-                    }
-                }
-                KeyCode.ARROW_UP -> {}
-                KeyCode.MOVE_HOME -> {
-                    if (isManualSelectionModeLeft) {
-                        setSelection(selectionStartMin, selection.end)
-                    } else {
-                        setSelection(selectionStartMin, selection.start)
-                    }
-                }
-                KeyCode.MOVE_END -> {
-                    if (isManualSelectionModeRight) {
-                        setSelection(selection.start, selectionEndMax)
-                    } else {
-                        setSelection(selection.end, selectionEndMax)
-                    }
+    private fun handleArrow(code: Int, count: Int) = activeEditorInstance.apply {
+        val isShiftPressed = isManualSelectionMode || inputEventDispatcher.isPressed(KeyCode.SHIFT)
+        when (code) {
+            KeyCode.ARROW_DOWN -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = false
+                    isManualSelectionModeEnd = true
                 }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_DOWN, meta(shift = isShiftPressed), count)
             }
-        } else if (selection.isSelectionMode && !isManualSelectionMode) {
-            // Text is selected but no manual selection mode -> arrows behave as if selection was
-            //  started in manual left mode
-            when (code) {
-                KeyCode.ARROW_DOWN -> {}
-                KeyCode.ARROW_LEFT -> {
-                    setSelection(selection.start, selection.end - 1)
-                }
-                KeyCode.ARROW_RIGHT -> {
-                    setSelection(
-                        selection.start,
-                        (selection.end + 1).coerceAtMost(selectionEndMax)
-                    )
-                }
-                KeyCode.ARROW_UP -> {}
-                KeyCode.MOVE_HOME -> {
-                    setSelection(selectionStartMin, selection.start)
-                }
-                KeyCode.MOVE_END -> {
-                    setSelection(selection.start, selectionEndMax)
+            KeyCode.ARROW_LEFT -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = true
+                    isManualSelectionModeEnd = false
                 }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_LEFT, meta(shift = isShiftPressed), count)
             }
-        } else if (!selection.isSelectionMode && isManualSelectionMode) {
-            // No text is selected but manual selection mode is active, user wants to start a new
-            //  selection. Must set manual selection direction.
-            when (code) {
-                KeyCode.ARROW_DOWN -> {}
-                KeyCode.ARROW_LEFT -> {
-                    setSelection(
-                        (selection.start - 1).coerceAtLeast(selectionStartMin),
-                        selection.start
-                    )
-                    isManualSelectionModeLeft = true
-                    isManualSelectionModeRight = false
-                }
-                KeyCode.ARROW_RIGHT -> {
-                    setSelection(
-                        selection.end,
-                        (selection.end + 1).coerceAtMost(selectionEndMax)
-                    )
-                    isManualSelectionModeLeft = false
-                    isManualSelectionModeRight = true
-                }
-                KeyCode.ARROW_UP -> {}
-                KeyCode.MOVE_HOME -> {
-                    setSelection(selectionStartMin, selection.start)
-                    isManualSelectionModeLeft = true
-                    isManualSelectionModeRight = false
-                }
-                KeyCode.MOVE_END -> {
-                    setSelection(selection.end, selectionEndMax)
-                    isManualSelectionModeLeft = false
-                    isManualSelectionModeRight = true
+            KeyCode.ARROW_RIGHT -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = false
+                    isManualSelectionModeEnd = true
                 }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_RIGHT, meta(shift = isShiftPressed), count)
             }
-        } else {
-            // No selection and no manual selection mode -> move cursor around
-            when (code) {
-                KeyCode.ARROW_DOWN -> activeEditorInstance.sendSystemKeyEvent(KeyEvent.KEYCODE_DPAD_DOWN)
-                KeyCode.ARROW_LEFT -> activeEditorInstance.sendSystemKeyEvent(KeyEvent.KEYCODE_DPAD_LEFT)
-                KeyCode.ARROW_RIGHT -> activeEditorInstance.sendSystemKeyEvent(KeyEvent.KEYCODE_DPAD_RIGHT)
-                KeyCode.ARROW_UP -> activeEditorInstance.sendSystemKeyEvent(KeyEvent.KEYCODE_DPAD_UP)
-                KeyCode.MOVE_HOME -> activeEditorInstance.sendSystemKeyEventAlt(KeyEvent.KEYCODE_DPAD_UP)
-                KeyCode.MOVE_END -> activeEditorInstance.sendSystemKeyEventAlt(KeyEvent.KEYCODE_DPAD_DOWN)
+            KeyCode.ARROW_UP -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = true
+                    isManualSelectionModeEnd = false
+                }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_UP, meta(shift = isShiftPressed), count)
+            }
+            KeyCode.MOVE_START_OF_PAGE -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = true
+                    isManualSelectionModeEnd = false
+                }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_UP, meta(alt = true, shift = isShiftPressed), count)
+            }
+            KeyCode.MOVE_END_OF_PAGE -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = false
+                    isManualSelectionModeEnd = true
+                }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_DOWN, meta(alt = true, shift = isShiftPressed), count)
+            }
+            KeyCode.MOVE_START_OF_LINE -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = true
+                    isManualSelectionModeEnd = false
+                }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_LEFT, meta(alt = true, shift = isShiftPressed), count)
+            }
+            KeyCode.MOVE_END_OF_LINE -> {
+                if (!selection.isSelectionMode && isManualSelectionMode) {
+                    isManualSelectionModeStart = false
+                    isManualSelectionModeEnd = true
+                }
+                sendDownUpKeyEvent(KeyEvent.KEYCODE_DPAD_RIGHT, meta(alt = true, shift = isShiftPressed), count)
             }
         }
     }
@@ -576,10 +648,10 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
      */
     private fun handleClipboardSelect() = activeEditorInstance.apply {
         if (selection.isSelectionMode) {
-            if (isManualSelectionMode && isManualSelectionModeLeft) {
-                setSelection(selection.start, selection.start)
+            if (isManualSelectionMode && isManualSelectionModeStart) {
+                selection.updateAndNotify(selection.start, selection.start)
             } else {
-                setSelection(selection.end, selection.end)
+                selection.updateAndNotify(selection.end, selection.end)
             }
             isManualSelectionMode = false
         } else {
@@ -590,54 +662,64 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
     }
 
     /**
-     * Handles a [KeyCode.CLIPBOARD_SELECT_ALL] event.
+     * Adjusts a given key data for caps state and returns the correct reference.
      */
-    private fun handleClipboardSelectAll() {
-        activeEditorInstance.setSelection(0, activeEditorInstance.cachedText.length)
+    private fun getAdjustedKeyData(keyData: KeyData): KeyData {
+        return if (caps && keyData is FlorisKeyData && keyData.shift != null) { keyData.shift!! } else { keyData }
     }
 
-    /**
-     * Main logic point for sending a key press. Different actions may occur depending on the given
-     * [KeyData]. This method handles all key press send events, which are text based. For media
-     * input send events see MediaInputManager.
-     *
-     * @param keyData The [KeyData] object which should be sent.
-     */
-    fun sendKeyPress(keyData: KeyData) {
-        when (keyData.code) {
+    override fun onInputKeyDown(ev: InputKeyEvent) {
+        val data = getAdjustedKeyData(ev.data)
+        when (data.code) {
+            KeyCode.INTERNAL_BATCH_EDIT -> {
+                florisboard.beginInternalBatchEdit()
+                return
+            }
+            KeyCode.SHIFT -> {
+                handleShiftDown(ev)
+            }
+        }
+    }
+
+    override fun onInputKeyUp(ev: InputKeyEvent) {
+        val data = getAdjustedKeyData(ev.data)
+        when (data.code) {
             KeyCode.ARROW_DOWN,
             KeyCode.ARROW_LEFT,
             KeyCode.ARROW_RIGHT,
             KeyCode.ARROW_UP,
-            KeyCode.MOVE_HOME,
-            KeyCode.MOVE_END -> handleArrow(keyData.code)
+            KeyCode.MOVE_START_OF_PAGE,
+            KeyCode.MOVE_END_OF_PAGE,
+            KeyCode.MOVE_START_OF_LINE,
+            KeyCode.MOVE_END_OF_LINE -> if (ev.action == InputKeyEvent.Action.DOWN_UP || ev.action == InputKeyEvent.Action.REPEAT) {
+                handleArrow(data.code, ev.count)
+            } else {
+                handleArrow(data.code, 1)
+            }
             KeyCode.CLIPBOARD_CUT -> activeEditorInstance.performClipboardCut()
             KeyCode.CLIPBOARD_COPY -> activeEditorInstance.performClipboardCopy()
-            KeyCode.CLIPBOARD_PASTE -> {
-                activeEditorInstance.performClipboardPaste()
-                smartbarView?.resetClipboardSuggestion()
-            }
+            KeyCode.CLIPBOARD_PASTE -> activeEditorInstance.performClipboardPaste()
             KeyCode.CLIPBOARD_SELECT -> handleClipboardSelect()
-            KeyCode.CLIPBOARD_SELECT_ALL -> handleClipboardSelectAll()
-            KeyCode.DELETE -> {
-                handleDelete()
-                smartbarView?.resetClipboardSuggestion()
+            KeyCode.CLIPBOARD_SELECT_ALL -> activeEditorInstance.performClipboardSelectAll()
+            KeyCode.DELETE -> handleDelete()
+            KeyCode.DELETE_WORD -> handleDeleteWord()
+            KeyCode.ENTER -> handleEnter()
+            KeyCode.INTERNAL_BATCH_EDIT -> {
+                florisboard.endInternalBatchEdit()
+                return
             }
-            KeyCode.ENTER -> {
-                handleEnter()
-                smartbarView?.resetClipboardSuggestion()
-            }
-            KeyCode.LANGUAGE_SWITCH -> florisboard.switchToNextSubtype()
+            KeyCode.LANGUAGE_SWITCH -> handleLanguageSwitch()
             KeyCode.SETTINGS -> florisboard.launchSettings()
-            KeyCode.SHIFT -> handleShift()
-            KeyCode.SHOW_INPUT_METHOD_PICKER -> {
-                val im =
-                    florisboard.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
-                im.showInputMethodPicker()
-            }
+            KeyCode.SHIFT -> handleShiftUp()
+            KeyCode.SHIFT_LOCK -> handleShiftLock()
+            KeyCode.SHOW_INPUT_METHOD_PICKER -> florisboard.imeManager?.showInputMethodPicker()
+            KeyCode.SPACE -> handleSpace(ev)
             KeyCode.SWITCH_TO_MEDIA_CONTEXT -> florisboard.setActiveInput(R.id.media_input)
+            KeyCode.SWITCH_TO_CLIPBOARD_CONTEXT -> florisboard.setActiveInput(R.id.clip_input)
             KeyCode.SWITCH_TO_TEXT_CONTEXT -> florisboard.setActiveInput(R.id.text_input)
-            KeyCode.TOGGLE_ONE_HANDED_MODE -> florisboard.toggleOneHandedMode()
+            KeyCode.CLEAR_CLIPBOARD_HISTORY -> florisboard.florisClipboardManager?.clearHistoryWithAnimation()
+            KeyCode.TOGGLE_ONE_HANDED_MODE_LEFT -> florisboard.toggleOneHandedMode(isRight = false)
+            KeyCode.TOGGLE_ONE_HANDED_MODE_RIGHT -> florisboard.toggleOneHandedMode(isRight = true)
             KeyCode.VIEW_CHARACTERS -> setActiveKeyboardMode(KeyboardMode.CHARACTERS)
             KeyCode.VIEW_NUMERIC -> setActiveKeyboardMode(KeyboardMode.NUMERIC)
             KeyCode.VIEW_NUMERIC_ADVANCED -> setActiveKeyboardMode(KeyboardMode.NUMERIC_ADVANCED)
@@ -650,52 +732,57 @@ class TextInputManager private constructor() : CoroutineScope by MainScope(),
                     KeyboardMode.NUMERIC,
                     KeyboardMode.NUMERIC_ADVANCED,
                     KeyboardMode.PHONE,
-                    KeyboardMode.PHONE2 -> when (keyData.type) {
+                    KeyboardMode.PHONE2 -> when (data.type) {
                         KeyType.CHARACTER,
                         KeyType.NUMERIC -> {
-                            val text = keyData.code.toChar().toString()
+                            val text = data.code.toChar().toString()
                             activeEditorInstance.commitText(text)
                         }
-                        else -> when (keyData.code) {
+                        else -> when (data.code) {
                             KeyCode.PHONE_PAUSE,
                             KeyCode.PHONE_WAIT -> {
-                                val text = keyData.code.toChar().toString()
+                                val text = data.code.toChar().toString()
                                 activeEditorInstance.commitText(text)
                             }
                         }
                     }
-                    else -> when (keyData.type) {
-                        KeyType.CHARACTER, KeyType.NUMERIC -> when (keyData.code) {
-                            KeyCode.SPACE -> handleSpace()
+                    else -> when (data.type) {
+                        KeyType.CHARACTER, KeyType.NUMERIC -> when (data.code) {
                             KeyCode.URI_COMPONENT_TLD -> {
-                                val tld = when (caps) {
-                                    true -> keyData.label.toUpperCase(Locale.getDefault())
-                                    false -> keyData.label.toLowerCase(Locale.getDefault())
-                                }
+                                val tld = data.label.toLowerCase(Locale.ENGLISH)
                                 activeEditorInstance.commitText(tld)
                             }
                             else -> {
-                                hasCapsRecentlyChanged = false
-                                hasSpaceRecentlyPressed = false
-                                var text = keyData.code.toChar().toString()
-                                text = when (caps) {
-                                    true -> text.toUpperCase(Locale.getDefault())
-                                    false -> text.toLowerCase(Locale.getDefault())
+                                var text = data.code.toChar().toString()
+                                val locale = if (florisboard.activeSubtype.locale.language == "el") { Locale.getDefault() } else { florisboard.activeSubtype.locale }
+                                text = when (caps && activeKeyboardMode == KeyboardMode.CHARACTERS) {
+                                    true -> text.toUpperCase(locale)
+                                    false -> text
                                 }
                                 activeEditorInstance.commitText(text)
                             }
                         }
                         else -> {
-                            Timber.e("sendKeyPress(keyData): Received unknown key: $keyData")
+                            Timber.e("sendKeyPress(keyData): Received unknown key: $data")
                         }
                     }
                 }
-                smartbarView?.resetClipboardSuggestion()
             }
         }
-        if (keyData.code != KeyCode.SHIFT && !capsLock) {
+        if (data.code != KeyCode.SHIFT && !capsLock && !inputEventDispatcher.isPressed(KeyCode.SHIFT)) {
             updateCapsState()
         }
         smartbarView?.updateSmartbarState()
     }
+
+    override fun onInputKeyRepeat(ev: InputKeyEvent) {
+        onInputKeyUp(ev)
+    }
+
+    override fun onInputKeyCancel(ev: InputKeyEvent) {
+        val data = getAdjustedKeyData(ev.data)
+        when (data.code) {
+            KeyCode.SHIFT -> handleShiftCancel()
+        }
+    }
 }

app/src/main/java/dev/patrickgold/florisboard/ime/text/editing/EditingKeyView.kt

@@ -30,6 +30,7 @@ import android.widget.Button
 import androidx.appcompat.widget.AppCompatImageButton
 import dev.patrickgold.florisboard.R
 import dev.patrickgold.florisboard.ime.core.FlorisBoard
+import dev.patrickgold.florisboard.ime.core.InputKeyEvent
 import dev.patrickgold.florisboard.ime.core.PrefHelper
 import dev.patrickgold.florisboard.ime.text.key.KeyCode
 import dev.patrickgold.florisboard.ime.text.key.KeyData
@@ -46,10 +47,25 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
     private val florisboard: FlorisBoard? = FlorisBoard.getInstanceOrNull()
     private val prefs: PrefHelper = PrefHelper.getDefaultInstance(context)
     private val themeManager: ThemeManager = ThemeManager.default()
-    private val data: KeyData
+    private val data: KeyData = when (id) {
+        R.id.arrow_down -> KeyData.ARROW_DOWN
+        R.id.arrow_left -> KeyData.ARROW_LEFT
+        R.id.arrow_right -> KeyData.ARROW_RIGHT
+        R.id.arrow_up -> KeyData.ARROW_UP
+        R.id.backspace -> KeyData.DELETE
+        R.id.clipboard_copy -> KeyData.CLIPBOARD_COPY
+        R.id.clipboard_cut -> KeyData.CLIPBOARD_CUT
+        R.id.clipboard_paste -> KeyData.CLIPBOARD_PASTE
+        R.id.move_start_of_line -> KeyData.MOVE_START_OF_LINE
+        R.id.move_end_of_line -> KeyData.MOVE_END_OF_LINE
+        R.id.select -> KeyData.CLIPBOARD_SELECT
+        R.id.select_all -> KeyData.CLIPBOARD_SELECT_ALL
+        else -> KeyData.UNSPECIFIED
+    }
     private var isKeyPressed: Boolean = false
     private val repeatedKeyPressHandler: Handler = Handler(context.mainLooper)
 
+    private val defaultTextSize: Float = Button(context).textSize
     private var label: String? = null
     private var labelPaint: Paint = Paint().apply {
         alpha = 255
@@ -57,7 +73,7 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
         isAntiAlias = true
         isFakeBoldText = false
         textAlign = Paint.Align.CENTER
-        textSize = Button(context).textSize
+        textSize = defaultTextSize
         typeface = Typeface.DEFAULT
     }
 
@@ -71,22 +87,6 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
     constructor(context: Context) : this(context, null)
     constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, R.style.TextEditingButton)
     constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
-        val code = when (id) {
-            R.id.arrow_down -> KeyCode.ARROW_DOWN
-            R.id.arrow_left -> KeyCode.ARROW_LEFT
-            R.id.arrow_right -> KeyCode.ARROW_RIGHT
-            R.id.arrow_up -> KeyCode.ARROW_UP
-            R.id.backspace -> KeyCode.DELETE
-            R.id.clipboard_copy -> KeyCode.CLIPBOARD_COPY
-            R.id.clipboard_cut -> KeyCode.CLIPBOARD_CUT
-            R.id.clipboard_paste -> KeyCode.CLIPBOARD_PASTE
-            R.id.move_home -> KeyCode.MOVE_HOME
-            R.id.move_end -> KeyCode.MOVE_END
-            R.id.select -> KeyCode.CLIPBOARD_SELECT
-            R.id.select_all -> KeyCode.CLIPBOARD_SELECT_ALL
-            else -> 0
-        }
-        data = KeyData(code = code)
         context.obtainStyledAttributes(attrs, R.styleable.EditingKeyView).apply {
             label = getString(R.styleable.EditingKeyView_android_text)
             recycle()
@@ -123,7 +123,7 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
                         val delayMillis = prefs.keyboard.longPressDelay.toLong()
                         repeatedKeyPressHandler.postAtScheduledRate(delayMillis, 25) {
                             if (isKeyPressed) {
-                                florisboard?.textInputManager?.sendKeyPress(data)
+                                florisboard?.textInputManager?.inputEventDispatcher?.send(InputKeyEvent.downUp(data))
                             } else {
                                 repeatedKeyPressHandler.cancelAll()
                             }
@@ -135,7 +135,7 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
                 isKeyPressed = false
                 repeatedKeyPressHandler.cancelAll()
                 if (event.actionMasked != MotionEvent.ACTION_CANCEL) {
-                    florisboard?.textInputManager?.sendKeyPress(data)
+                    florisboard?.textInputManager?.inputEventDispatcher?.send(InputKeyEvent.downUp(data))
                 }
             }
             else -> return false
@@ -173,8 +173,10 @@ class EditingKeyView : AppCompatImageButton, ThemeManager.OnThemeUpdatedListener
             }
             val isPortrait =
                 resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
-            if (!isPortrait) {
-                labelPaint.textSize *= 0.9f
+            labelPaint.textSize = if (isPortrait) {
+                defaultTextSize
+            } else {
+                defaultTextSize * 0.9f
             }
             val centerX = measuredWidth / 2.0f
             val centerY = measuredHeight / 2.0f + (labelPaint.textSize - labelPaint.descent()) / 2

app/src/main/java/dev/patrickgold/florisboard/ime/text/editing/EditingKeyboardView.kt

@@ -35,8 +35,6 @@ class EditingKeyboardView : ConstraintLayout, FlorisBoard.EventListener,
     private val florisboard: FlorisBoard? = FlorisBoard.getInstanceOrNull()
     private val themeManager: ThemeManager = ThemeManager.default()
 
-    private var arrowUpKey: EditingKeyView? = null
-    private var arrowDownKey: EditingKeyView? = null
     private var selectKey: EditingKeyView? = null
     private var selectAllKey: EditingKeyView? = null
     private var cutKey: EditingKeyView? = null
@@ -45,16 +43,13 @@ class EditingKeyboardView : ConstraintLayout, FlorisBoard.EventListener,
 
     constructor(context: Context) : this(context, null)
     constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
-    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
-        florisboard?.addEventListener(this)
-    }
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
 
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
+        florisboard?.addEventListener(this)
         themeManager.registerOnThemeUpdatedListener(this)
 
-        arrowUpKey = findViewById(R.id.arrow_up)
-        arrowDownKey = findViewById(R.id.arrow_down)
         selectKey = findViewById(R.id.select)
         selectAllKey = findViewById(R.id.select_all)
         cutKey = findViewById(R.id.clipboard_cut)
@@ -63,8 +58,9 @@ class EditingKeyboardView : ConstraintLayout, FlorisBoard.EventListener,
     }
 
     override fun onDetachedFromWindow() {
-        super.onDetachedFromWindow()
         themeManager.unregisterOnThemeUpdatedListener(this)
+        florisboard?.removeEventListener(this)
+        super.onDetachedFromWindow()
     }
 
     override fun onThemeUpdated(theme: Theme) {
@@ -74,8 +70,6 @@ class EditingKeyboardView : ConstraintLayout, FlorisBoard.EventListener,
     override fun onUpdateSelection() {
         val isSelectionActive = florisboard?.activeEditorInstance?.selection?.isSelectionMode ?: false
         val isSelectionMode = florisboard?.textInputManager?.isManualSelectionMode ?: false
-        arrowUpKey?.isEnabled = !(isSelectionActive || isSelectionMode)
-        arrowDownKey?.isEnabled = !(isSelectionActive || isSelectionMode)
         selectKey?.isHighlighted = isSelectionActive || isSelectionMode
         selectAllKey?.visibility = when {
             isSelectionActive -> View.GONE
@@ -86,7 +80,11 @@ class EditingKeyboardView : ConstraintLayout, FlorisBoard.EventListener,
             else -> View.GONE
         }
         copyKey?.isEnabled = isSelectionActive
-        pasteKey?.isEnabled = florisboard?.clipboardManager?.hasPrimaryClip() ?: false
+        pasteKey?.isEnabled =
+            florisboard?.florisClipboardManager?.hasPrimaryClip() == true &&
+                florisboard.activeEditorInstance.contentMimeTypes?.any {
+                    florisboard.florisClipboardManager!!.primaryClip?.mimeTypes?.contains(it) ?: false
+                } == true
     }
 
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {