Add notification channel settings.

If a user has set a preference at an app wide level, it cannot be
undone at a channel level, but channels can be more restrictive.

Tests: changing settings for apps and channels.

Change-Id: I7907b8179ffc24d68197c917f182e63d8e1ff7a7

res/values/strings.xml

@@ -6274,12 +6274,21 @@
     <!-- [CHAR LIMIT=NONE] Text when loading app list in notification settings -->
     <string name="loading_notification_apps">Loading apps...</string>
 
+    <!-- [CHAR LIMIT=NONE] App notification settings: channels title -->
+    <string name="notification_channels">Channels</string>
+
     <!-- [CHAR LIMIT=NONE] App notification settings: Block option title -->
     <string name="app_notification_block_title">Block all</string>
 
     <!-- [CHAR LIMIT=NONE] App notification settings: Block option description-->
     <string name="app_notification_block_summary">Never show notifications from this app</string>
 
+    <!-- [CHAR LIMIT=NONE] Channel notification settings: Block option title -->
+    <string name="channel_notification_block_title">Block all</string>
+
+    <!-- [CHAR LIMIT=NONE] Channel notification settings: Block option description-->
+    <string name="channel_notification_block_summary">Never show notifications from this channel</string>
+
     <!-- [CHAR LIMIT=NONE] App notification settings: Override DND option title -->
     <string name="app_notification_override_dnd_title">Override Do Not Disturb</string>
 
@@ -6304,6 +6313,12 @@
     <!-- [CHAR LIMIT=150] App notification settings: App notifications Importance title -->
     <string name="app_notification_importance_title">Importance</string>
 
+    <!-- [CHAR LIMIT=180] Notification settings: lights -->
+    <string name="notification_show_lights_title">Always pulse notification light</string>
+
+    <!-- [CHAR LIMIT=180] Notification settings: vibration -->
+    <string name="notification_vibrate_title">Always vibrate</string>
+
     <!-- [CHAR LIMIT=40] Zen mode settings: Rule name option and edit dialog title -->
     <string name="zen_mode_rule_name">Rule name</string>
 

res/xml/app_notification_settings.xml

@@ -55,4 +55,9 @@
             android:order="6"
             settings:useAdditionalSummary="true" />
 
+    <PreferenceCategory
+            android:key="channels"
+            android:title="@string/notification_channels"
+            android:order="7" />
+
 </PreferenceScreen>

res/xml/channel_notification_settings.xml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2016 The Android Open Source Project
+
+     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.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:settings="http://schemas.android.com/apk/res/com.android.settings" >
+
+    <!-- Importance -->
+    <!-- Block -->
+    <com.android.settingslib.RestrictedSwitchPreference
+            android:key="block"
+            android:title="@string/channel_notification_block_title"
+            android:summary="@string/app_notification_block_summary"
+            android:order="2"
+            settings:useAdditionalSummary="true"
+            settings:restrictedSwitchSummary="@string/enabled_by_admin" />
+    <!-- Silent -->
+    <com.android.settingslib.RestrictedSwitchPreference
+            android:key="silent"
+            android:title="@string/show_silently"
+            android:summary="@string/show_silently_summary"
+            android:order="3"
+            settings:useAdditionalSummary="true" />
+    <!-- Slider -->
+    <com.android.settings.notification.ImportanceSeekBarPreference
+            android:key="importance"
+            android:title="@string/notification_importance_title"
+            android:order="4"/>
+
+    <!-- Visibility Override -->
+    <com.android.settings.notification.RestrictedDropDownPreference
+            android:key="visibility_override"
+            android:title="@string/app_notification_visibility_override_title"
+            android:order="5" />
+
+    <!-- Bypass DND -->
+    <com.android.settingslib.RestrictedSwitchPreference
+            android:key="bypass_dnd"
+            android:title="@string/app_notification_override_dnd_title"
+            android:summary="@string/app_notification_override_dnd_summary"
+            android:order="6"
+            settings:useAdditionalSummary="true" />
+
+    <!-- Lights -->
+    <com.android.settingslib.RestrictedSwitchPreference
+            android:key="lights"
+            android:title="@string/notification_show_lights_title"
+            android:order="7"
+            settings:useAdditionalSummary="true" />
+
+    <!-- Vibration -->
+    <com.android.settingslib.RestrictedSwitchPreference
+            android:key="vibrate"
+            android:title="@string/notification_vibrate_title"
+            android:order="8"
+            settings:useAdditionalSummary="true" />
+
+    <!-- Default ringtone -->
+    <com.android.settings.notification.DefaultNotificationTonePreference
+            android:key="ringtone"
+            android:title="@string/notification_ringtone_title"
+            android:dialogTitle="@string/notification_ringtone_title"
+            android:order="9"
+            android:ringtoneType="notification" />
+</PreferenceScreen>

src/com/android/settings/DefaultRingtonePreference.java

@@ -31,7 +31,7 @@ public class DefaultRingtonePreference extends RingtonePreference {
     private static final String TAG = "DefaultRingtonePreference";
 
     private int mUserId;
-    private Context mUserContext;
+    protected Context mUserContext;
 
     public DefaultRingtonePreference(Context context, AttributeSet attrs) {
         super(context, attrs);

src/com/android/settings/notification/AppNotificationSettings.java

@@ -17,23 +17,24 @@
 package com.android.settings.notification;
 
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.ResolveInfo;
-import android.content.pm.UserInfo;
 import android.os.Bundle;
-import android.os.UserHandle;
+import android.support.v7.preference.PreferenceCategory;
-import android.service.notification.NotificationListenerService.Ranking;
 import android.util.ArrayMap;
 import android.util.Log;
 
 import com.android.internal.logging.MetricsProto.MetricsEvent;
-import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.AppHeader;
 import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.applications.AppInfoBase;
 import com.android.settings.notification.NotificationBackend.AppRow;
+import com.android.settingslib.RestrictedPreference;
 import com.android.settingslib.RestrictedSwitchPreference;
 
 
@@ -48,8 +49,9 @@ public class AppNotificationSettings extends NotificationSettingsBase {
             = new Intent(Intent.ACTION_MAIN)
                 .addCategory(Notification.INTENT_CATEGORY_NOTIFICATION_PREFERENCES);
 
-    private AppRow mAppRow;
+    private static final String KEY_CHANNELS = "channels";
-    private boolean mDndVisualEffectsSuppressed;
+    private PreferenceCategory mChannels;
+    List<NotificationChannel> mChannelList;
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
@@ -77,51 +79,52 @@ public class AppNotificationSettings extends NotificationSettingsBase {
                         KEY_VISIBILITY_OVERRIDE);
         mBlock = (RestrictedSwitchPreference) getPreferenceScreen().findPreference(KEY_BLOCK);
         mSilent = (RestrictedSwitchPreference) getPreferenceScreen().findPreference(KEY_SILENT);
+        mChannels = (PreferenceCategory) findPreference(KEY_CHANNELS);
 
         if (mPkgInfo != null) {
-            mAppRow = mBackend.loadAppRow(mContext, mPm, mPkgInfo);
-
-            NotificationManager.Policy policy =
-                    NotificationManager.from(mContext).getNotificationPolicy();
-            mDndVisualEffectsSuppressed = policy == null ? false : policy.suppressedVisualEffects != 0;
-
             // load settings intent
             ArrayMap<String, AppRow> rows = new ArrayMap<String, AppRow>();
             rows.put(mAppRow.pkg, mAppRow);
             collectConfigActivities(rows);
+            mChannelList = mBackend.getChannels(mPkg, mUid).getList();
 
-            setupImportancePrefs(mAppRow.systemApp, mAppRow.appImportance, mAppRow.banned);
+            setupImportancePrefs(mAppRow.systemApp, mAppRow.appImportance, mAppRow.banned,
+                    NotificationManager.IMPORTANCE_MAX);
             setupPriorityPref(mAppRow.appBypassDnd);
             setupVisOverridePref(mAppRow.appVisOverride);
+
+            if (mChannelList.isEmpty()) {
+                setVisible(mChannels, false);
+            } else {
+                int N = mChannelList.size();
+                for (int i = 0; i < N; i++) {
+                    final NotificationChannel channel = mChannelList.get(i);
+                    RestrictedPreference channelPref = new RestrictedPreference(getPrefContext());
+                    channelPref.setDisabledByAdmin(mSuspendedAppsAdmin);
+                    channelPref.setKey(channel.getId());
+                    channelPref.setTitle(channel.getName());
+                    Bundle channelArgs = new Bundle();
+                    channelArgs.putInt(AppInfoBase.ARG_PACKAGE_UID, mUid);
+                    channelArgs.putBoolean(AppHeader.EXTRA_HIDE_INFO_BUTTON, true);
+                    channelArgs.putString(AppInfoBase.ARG_PACKAGE_NAME, mPkg);
+                    channelArgs.putString(ARG_CHANNEL, channel.getId());
+
+                    Intent topicIntent = Utils.onBuildStartFragmentIntent(getActivity(),
+                            ChannelNotificationSettings.class.getName(),
+                            channelArgs, null, 0, null, false);
+                    channelPref.setIntent(topicIntent);
+                    mChannels.addPreference(channelPref);
+                }
+            }
             updateDependents(mAppRow.appImportance);
         }
     }
 
     @Override
     protected void updateDependents(int importance) {
-        LockPatternUtils utils = new LockPatternUtils(getActivity());
+        super.updateDependents(importance);
-        boolean lockscreenSecure = utils.isSecure(UserHandle.myUserId());
+        setVisible(mChannels,
-        UserInfo parentUser = mUm.getProfileParent(UserHandle.myUserId());
+                !(mChannelList.isEmpty() || importance == NotificationManager.IMPORTANCE_NONE));
-        if (parentUser != null){
-            lockscreenSecure |= utils.isSecure(parentUser.id);
-        }
-
-        if (getPreferenceScreen().findPreference(mBlock.getKey()) != null) {
-            setVisible(mSilent, checkCanBeVisible(Ranking.IMPORTANCE_MIN, importance));
-            mSilent.setChecked(importance == Ranking.IMPORTANCE_LOW);
-        }
-        setVisible(mPriority, checkCanBeVisible(Ranking.IMPORTANCE_DEFAULT, importance)
-                || (checkCanBeVisible(Ranking.IMPORTANCE_LOW, importance)
-                        && mDndVisualEffectsSuppressed));
-        setVisible(mVisibilityOverride,
-                checkCanBeVisible(Ranking.IMPORTANCE_MIN, importance) && lockscreenSecure);
-    }
-
-    protected boolean checkCanBeVisible(int minImportanceVisible, int importance) {
-        if (importance == Ranking.IMPORTANCE_UNSPECIFIED) {
-            return true;
-        }
-        return importance >= minImportanceVisible;
     }
 
     private List<ResolveInfo> queryNotificationConfigActivities() {

src/com/android/settings/notification/ChannelNotificationSettings.java

@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 com.android.settings.notification;
+
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.settings.AppHeader;
+import com.android.settings.R;
+import com.android.settings.RingtonePreference;
+import com.android.settingslib.RestrictedLockUtils;
+import com.android.settingslib.RestrictedSwitchPreference;
+
+import android.app.NotificationManager;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.provider.Settings;
+import android.service.notification.NotificationListenerService.Ranking;
+import android.support.v7.preference.Preference;
+
+public class ChannelNotificationSettings extends NotificationSettingsBase {
+    protected static final String KEY_LIGHTS = "lights";
+    protected static final String KEY_VIBRATE = "vibrate";
+    protected static final String KEY_RINGTONE = "ringtone";
+
+    protected RestrictedSwitchPreference mLights;
+    protected RestrictedSwitchPreference mVibrate;
+    protected DefaultNotificationTonePreference mRingtone;
+    private int mMaxImportance;
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        if (mAppRow == null || mChannel == null) return;
+        AppHeader.createAppHeader(
+                this, mAppRow.icon, mChannel.getName(), mAppRow.pkg, mAppRow.uid);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.NOTIFICATION_TOPIC_NOTIFICATION;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        addPreferencesFromResource(R.xml.channel_notification_settings);
+
+        mImportance = (ImportanceSeekBarPreference) findPreference(KEY_IMPORTANCE);
+        mPriority =
+                (RestrictedSwitchPreference) findPreference(KEY_BYPASS_DND);
+        mVisibilityOverride =
+                (RestrictedDropDownPreference) findPreference(KEY_VISIBILITY_OVERRIDE);
+        mBlock = (RestrictedSwitchPreference) findPreference(KEY_BLOCK);
+        mSilent = (RestrictedSwitchPreference) findPreference(KEY_SILENT);
+        mLights = (RestrictedSwitchPreference) findPreference(KEY_LIGHTS);
+        mVibrate = (RestrictedSwitchPreference) findPreference(KEY_VIBRATE);
+        mRingtone = (DefaultNotificationTonePreference) findPreference(KEY_RINGTONE);
+
+        if (mPkgInfo != null) {
+            setupPriorityPref(mChannel.canBypassDnd());
+            if (mAppRow.appBypassDnd) {
+                mPriority.setShouldDisableView(true);
+            }
+            setupVisOverridePref(mChannel.getLockscreenVisibility());
+            if (mAppRow.appVisOverride != Ranking.VISIBILITY_NO_OVERRIDE) {
+                mVisibilityOverride.setShouldDisableView(true);
+            }
+            setupLights();
+            setupVibrate();
+            setupRingtone();
+            mMaxImportance = mAppRow.appImportance == NotificationManager.IMPORTANCE_UNSPECIFIED
+                    ? NotificationManager.IMPORTANCE_MAX : mAppRow.appImportance;
+            setupImportancePrefs(false, mChannel.getImportance(),
+                    mChannel.getImportance() == NotificationManager.IMPORTANCE_NONE,
+                    mMaxImportance);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if ((mUid != -1 && getPackageManager().getPackagesForUid(mUid) == null)) {
+            // App isn't around anymore, must have been removed.
+            finish();
+            return;
+        }
+        mSuspendedAppsAdmin = RestrictedLockUtils.checkIfApplicationIsSuspended(
+                mContext, mPkg, mUserId);
+        if (mLights != null) {
+            mLights.setDisabledByAdmin(mSuspendedAppsAdmin);
+        }
+        if (mVibrate != null) {
+            mVibrate.setDisabledByAdmin(mSuspendedAppsAdmin);
+        }
+    }
+
+    private void setupLights() {
+        mLights.setDisabledByAdmin(mSuspendedAppsAdmin);
+        mLights.setChecked(mChannel.shouldShowLights());
+        mLights.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            @Override
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                final boolean lights = (Boolean) newValue;
+                mChannel.setLights(lights);
+                mBackend.updateChannel(mPkg, mUid, mChannel);
+                return true;
+            }
+        });
+    }
+
+    private void setupVibrate() {
+        mVibrate.setDisabledByAdmin(mSuspendedAppsAdmin);
+        mVibrate.setChecked(mChannel.shouldVibrate());
+        mVibrate.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            @Override
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                final boolean vibrate = (Boolean) newValue;
+                mChannel.setVibration(vibrate);
+                mBackend.updateChannel(mPkg, mUid, mChannel);
+                return true;
+            }
+        });
+    }
+
+    private void setupRingtone() {
+        mRingtone.setRingtone(mChannel.getDefaultRingtone());
+        mRingtone.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            @Override
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                Uri ringtone = Uri.parse((String) newValue);
+                mRingtone.setRingtone(ringtone);
+                mChannel.setDefaultRingtone(ringtone);
+                mBackend.updateChannel(mPkg, mUid, mChannel);
+                return false;
+            }
+        });
+    }
+
+    @Override
+    public boolean onPreferenceTreeClick(Preference preference) {
+        if (preference instanceof RingtonePreference) {
+            mRingtone.onPrepareRingtonePickerIntent(mRingtone.getIntent());
+            startActivityForResult(preference.getIntent(), 200);
+            return true;
+        }
+        return super.onPreferenceTreeClick(preference);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (mRingtone != null) {
+            mRingtone.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    private boolean canPulseLight() {
+        if (!getResources()
+                .getBoolean(com.android.internal.R.bool.config_intrusiveNotificationLed)) {
+            return false;
+        }
+        return Settings.System.getInt(getContentResolver(),
+                Settings.System.NOTIFICATION_LIGHT_PULSE, 0) == 1;
+    }
+
+    @Override
+    protected void updateDependents(int importance) {
+        if (importance == NotificationManager.IMPORTANCE_UNSPECIFIED) {
+            importance = mMaxImportance;
+        }
+        importance = Math.min(mMaxImportance, importance);
+
+        super.updateDependents(importance);
+        setVisible(mLights, checkCanBeVisible(
+                NotificationManager.IMPORTANCE_LOW, importance) && canPulseLight());
+        setVisible(mVibrate, checkCanBeVisible(NotificationManager.IMPORTANCE_DEFAULT, importance));
+        setVisible(mRingtone, checkCanBeVisible(
+                NotificationManager.IMPORTANCE_DEFAULT, importance));
+        if (mMaxImportance == NotificationManager.IMPORTANCE_LOW
+                && getPreferenceScreen().findPreference(mBlock.getKey()) != null) {
+            setVisible(mSilent, false);
+        }
+    }
+}

src/com/android/settings/notification/DefaultNotificationTonePreference.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 com.android.settings.notification;
+
+
+import com.android.settings.DefaultRingtonePreference;
+import com.android.settings.Utils;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteException;
+import android.media.Ringtone;
+import android.media.RingtoneManager;
+import android.os.AsyncTask;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.net.Uri;
+import android.provider.MediaStore;
+import android.provider.OpenableColumns;
+import android.util.AttributeSet;
+
+import static android.content.ContentProvider.getUriWithoutUserId;
+
+public class DefaultNotificationTonePreference extends DefaultRingtonePreference {
+    private Uri mRingtone;
+
+    public DefaultNotificationTonePreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected Uri onRestoreRingtone() {
+        return mRingtone;
+    }
+
+    @Override
+    public void onPrepareRingtonePickerIntent(Intent ringtonePickerIntent) {
+        super.onPrepareRingtonePickerIntent(ringtonePickerIntent);
+        ringtonePickerIntent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI,
+                mRingtone);
+    }
+
+    public void setRingtone(Uri ringtone) {
+        mRingtone = ringtone;
+        updateRingtoneName(mRingtone);
+    }
+
+    private void updateRingtoneName(final Uri uri) {
+        AsyncTask ringtoneNameTask = new AsyncTask<Object, Void, CharSequence>() {
+            @Override
+            protected CharSequence doInBackground(Object... params) {
+                return Ringtone.getTitle(mUserContext, uri, false /* followSettingsUri */,
+                        true /* allowRemote */);
+            }
+
+            @Override
+            protected void onPostExecute(CharSequence name) {
+                setSummary(name);
+            }
+        };
+        ringtoneNameTask.execute();
+    }
+}

src/com/android/settings/notification/NotificationBackend.java

@@ -17,11 +17,13 @@ package com.android.settings.notification;
 
 import android.app.INotificationManager;
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.content.pm.ParceledListSlice;
 import android.graphics.drawable.Drawable;
 import android.os.ServiceManager;
 import android.os.UserHandle;
@@ -141,6 +143,35 @@ public class NotificationBackend {
         }
     }
 
+    public NotificationChannel getChannel(String pkg, int uid, String channelId) {
+        if (channelId == null) {
+            return null;
+        }
+        try {
+            return sINM.getNotificationChannelForPackage(pkg, uid, channelId);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+            return null;
+        }
+    }
+
+    public ParceledListSlice<NotificationChannel> getChannels(String pkg, int uid) {
+        try {
+            return sINM.getNotificationChannelsForPackage(pkg, uid);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+            return ParceledListSlice.emptyList();
+        }
+    }
+
+    public void updateChannel(String pkg, int uid, NotificationChannel channel) {
+        try {
+            sINM.updateNotificationChannelForPackage(pkg, uid, channel);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+        }
+    }
+
     static class Row {
         public String section;
     }
@@ -159,4 +190,8 @@ public class NotificationBackend {
         public int appVisOverride;
         public boolean lockScreenSecure;
     }
+
+    public static class ChannelRow extends AppRow {
+        public NotificationChannel channel;
+    }
 }

src/com/android/settings/notification/NotificationSettingsBase.java

@@ -16,6 +16,7 @@
 
 package com.android.settings.notification;
 
+import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.applications.AppInfoBase;
@@ -23,12 +24,15 @@ import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedSwitchPreference;
 
 import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
 import android.app.admin.DevicePolicyManager;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.UserInfo;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
@@ -49,6 +53,8 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
     private static final String TUNER_SETTING = "show_importance_slider";
 
+    protected static final String ARG_CHANNEL = "channel";
+
     protected static final String KEY_BYPASS_DND = "bypass_dnd";
     protected static final String KEY_VISIBILITY_OVERRIDE = "visibility_override";
     protected static final String KEY_IMPORTANCE = "importance";
@@ -71,6 +77,10 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
     protected RestrictedSwitchPreference mSilent;
     protected EnforcedAdmin mSuspendedAppsAdmin;
     protected boolean mShowSlider = false;
+    protected boolean mDndVisualEffectsSuppressed;
+
+    protected NotificationChannel mChannel;
+    protected NotificationBackend.AppRow mAppRow;
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
@@ -122,9 +132,16 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
             return;
         }
 
+        mAppRow = mBackend.loadAppRow(mContext, mPm, mPkgInfo);
+        mChannel = (args != null && args.containsKey(ARG_CHANNEL)) ?
+                mBackend.getChannel(mPkg, mUid, args.getString(ARG_CHANNEL)) : null;
+
         mSuspendedAppsAdmin = RestrictedLockUtils.checkIfApplicationIsSuspended(
                 mContext, mPkg, mUserId);
         mShowSlider = Settings.Secure.getInt(getContentResolver(), TUNER_SETTING, 0) == 1;
+        NotificationManager.Policy policy =
+                NotificationManager.from(mContext).getNotificationPolicy();
+        mDndVisualEffectsSuppressed = policy == null ? false : policy.suppressedVisualEffects != 0;
     }
 
     @Override
@@ -154,21 +171,27 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
         }
     }
 
-    protected void setupImportancePrefs(boolean notBlockable, int importance, boolean banned) {
+    protected void setupImportancePrefs(boolean notBlockable, int importance, boolean banned,
+            int maxImportance) {
         if (mShowSlider) {
             setVisible(mBlock, false);
             setVisible(mSilent, false);
             mImportance.setDisabledByAdmin(mSuspendedAppsAdmin);
             mImportance.setMinimumProgress(
                     notBlockable ? Ranking.IMPORTANCE_MIN : Ranking.IMPORTANCE_NONE);
-            mImportance.setMax(Ranking.IMPORTANCE_MAX);
+            mImportance.setMax(maxImportance);
-            mImportance.setProgress(importance);
+            mImportance.setProgress(Math.min(importance, maxImportance));
             mImportance.setAutoOn(importance == Ranking.IMPORTANCE_UNSPECIFIED);
             mImportance.setCallback(new ImportanceSeekBarPreference.Callback() {
                 @Override
                 public void onImportanceChanged(int progress, boolean fromUser) {
                     if (fromUser) {
-                        mBackend.setImportance(mPkg, mUid, progress);
+                        if (mChannel != null) {
+                            mChannel.setImportance(progress);
+                            mBackend.updateChannel(mPkg, mUid, mChannel);
+                        } else {
+                            mBackend.setImportance(mPkg, mUid, progress);
+                        }
                     }
                     updateDependents(progress);
                 }
@@ -178,33 +201,56 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
             if (notBlockable) {
                 setVisible(mBlock, false);
             } else {
-                boolean blocked = importance == Ranking.IMPORTANCE_NONE || banned;
+                mBlock.setChecked(banned);
-                mBlock.setChecked(blocked);
+                mBlock.setOnPreferenceChangeListener(
-                mBlock.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                        new Preference.OnPreferenceChangeListener() {
-                    @Override
+                            @Override
-                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                            public boolean onPreferenceChange(Preference preference,
-                        final boolean blocked = (Boolean) newValue;
+                                    Object newValue) {
-                        final int importance =
+                                final boolean blocked = (Boolean) newValue;
-                                blocked ? Ranking.IMPORTANCE_NONE : Ranking.IMPORTANCE_UNSPECIFIED;
+                                final int importance = blocked
-                        mBackend.setImportance(mPkgInfo.packageName, mUid, importance);
+                                        ? Ranking.IMPORTANCE_NONE
-                        updateDependents(importance);
+                                        : Ranking.IMPORTANCE_UNSPECIFIED;
-                        return true;
+                                if (mChannel != null) {
-                    }
+                                    mChannel.setImportance(importance);
-                });
+                                    mBackend.updateChannel(mPkg, mUid, mChannel);
+                                } else {
+                                    mBackend.setImportance(mPkgInfo.packageName, mUid,
+                                            importance);
+                                }
+                                updateDependents(importance);
+                                return true;
+                            }
+                        });
+            }
+            // app silenced; cannot un-silence a channel
+            if (maxImportance == NotificationManager.IMPORTANCE_LOW) {
+                setVisible(mSilent, false);
+                updateDependents(banned ? Ranking.IMPORTANCE_NONE : Ranking.IMPORTANCE_LOW);
+            } else {
+                mSilent.setChecked(importance == Ranking.IMPORTANCE_LOW);
+                mSilent.setOnPreferenceChangeListener(
+                        new Preference.OnPreferenceChangeListener() {
+                            @Override
+                            public boolean onPreferenceChange(Preference preference,
+                                    Object newValue) {
+                                final boolean silenced = (Boolean) newValue;
+                                final int importance = silenced
+                                        ? Ranking.IMPORTANCE_LOW
+                                        : Ranking.IMPORTANCE_UNSPECIFIED;
+                                if (mChannel != null) {
+                                    mChannel.setImportance(importance);
+                                    mBackend.updateChannel(mPkg, mUid, mChannel);
+                                } else {
+                                    mBackend.setImportance(mPkgInfo.packageName, mUid,
+                                            importance);
+                                }
+                                updateDependents(importance);
+                                return true;
+                            }
+                        });
+                updateDependents(banned ? Ranking.IMPORTANCE_NONE : importance);
             }
-            mSilent.setChecked(importance == Ranking.IMPORTANCE_LOW);
-            mSilent.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
-                @Override
-                public boolean onPreferenceChange(Preference preference, Object newValue) {
-                    final boolean silenced = (Boolean) newValue;
-                    final int importance =
-                            silenced ? Ranking.IMPORTANCE_LOW : Ranking.IMPORTANCE_UNSPECIFIED;
-                    mBackend.setImportance(mPkgInfo.packageName, mUid, importance);
-                    updateDependents(importance);
-                    return true;
-                }
-            });
-            updateDependents(banned ? Ranking.IMPORTANCE_NONE : importance);
         }
     }
 
@@ -215,7 +261,13 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
             @Override
             public boolean onPreferenceChange(Preference preference, Object newValue) {
                 final boolean bypassZenMode = (Boolean) newValue;
-                return mBackend.setBypassZenMode(mPkgInfo.packageName, mUid, bypassZenMode);
+                if (mChannel != null) {
+                    mChannel.setBypassDnd(bypassZenMode);
+                    mBackend.updateChannel(mPkg, mUid, mChannel);
+                    return true;
+                } else {
+                    return mBackend.setBypassZenMode(mPkgInfo.packageName, mUid, bypassZenMode);
+                }
             }
         });
     }
@@ -261,7 +313,12 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
                 if (sensitive == getGlobalVisibility()) {
                     sensitive = Ranking.VISIBILITY_NO_OVERRIDE;
                 }
-                mBackend.setVisibilityOverride(mPkgInfo.packageName, mUid, sensitive);
+                if (mChannel != null) {
+                    mChannel.setLockscreenVisibility(sensitive);
+                    mBackend.updateChannel(mPkg, mUid, mChannel);
+                } else {
+                    mBackend.setVisibilityOverride(mPkgInfo.packageName, mUid, sensitive);
+                }
                 return true;
             }
         });
@@ -287,17 +344,38 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
         return globalVis;
     }
 
-    protected boolean getLockscreenNotificationsEnabled() {
+    private boolean getLockscreenNotificationsEnabled() {
         return Settings.Secure.getInt(getContentResolver(),
                 Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 0) != 0;
     }
 
-    protected boolean getLockscreenAllowPrivateNotifications() {
+    private boolean getLockscreenAllowPrivateNotifications() {
         return Settings.Secure.getInt(getContentResolver(),
                 Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, 0) != 0;
     }
 
-    abstract void updateDependents(int progress);
+    private boolean isLockScreenSecure() {
+        LockPatternUtils utils = new LockPatternUtils(getActivity());
+        boolean lockscreenSecure = utils.isSecure(UserHandle.myUserId());
+        UserInfo parentUser = mUm.getProfileParent(UserHandle.myUserId());
+        if (parentUser != null){
+            lockscreenSecure |= utils.isSecure(parentUser.id);
+        }
+
+        return lockscreenSecure;
+    }
+
+    protected void updateDependents(int importance) {
+        if (getPreferenceScreen().findPreference(mBlock.getKey()) != null) {
+            setVisible(mSilent, checkCanBeVisible(Ranking.IMPORTANCE_MIN, importance));
+            mSilent.setChecked(importance == Ranking.IMPORTANCE_LOW);
+        }
+        setVisible(mPriority, checkCanBeVisible(Ranking.IMPORTANCE_DEFAULT, importance)
+                || (checkCanBeVisible(Ranking.IMPORTANCE_LOW, importance)
+                && mDndVisualEffectsSuppressed));
+        setVisible(mVisibilityOverride,
+                checkCanBeVisible(Ranking.IMPORTANCE_MIN, importance) && isLockScreenSecure());
+    }
 
     protected void setVisible(Preference p, boolean visible) {
         final boolean isVisible = getPreferenceScreen().findPreference(p.getKey()) != null;
@@ -309,6 +387,13 @@ abstract public class NotificationSettingsBase extends SettingsPreferenceFragmen
         }
     }
 
+    protected boolean checkCanBeVisible(int minImportanceVisible, int importance) {
+        if (importance == Ranking.IMPORTANCE_UNSPECIFIED) {
+            return true;
+        }
+        return importance >= minImportanceVisible;
+    }
+
     protected void toastAndFinish() {
         Toast.makeText(mContext, R.string.app_not_found_dlg_text, Toast.LENGTH_SHORT).show();
         getActivity().finish();