New feature “Text and reading options” for SetupWizard, Wallpaper, and Settings (13/n).

- Add the ResetPreference for controlling all preferences state in the text and reading options page.
1) Create a new interface ResetStateListener for the other preferences.

- Link-up between the reset, font size, and display size preferences.

Bug: 211503117
Test: make RunSettingsRoboTests ROBOTEST_FILTER=PreviewSizeSeekBarControllerTest
Test: make RunSettingsRoboTests ROBOTEST_FILTER=TextReadingResetControllerTest
Change-Id: Ida773967834e32737b1daac885a2dd71189d32c8

res/drawable/accessibility_text_reading_reset_button_background.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2022 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.
+-->
+
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+    android:shape="rectangle">
+
+    <corners android:radius="100dp" />
+    <solid android:color="?androidprv:attr/colorAccentPrimary" />
+</shape>

res/layout/accessibility_text_reading_reset_button.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2022 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.
+-->
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?android:attr/listPreferredItemHeight"
+    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+    android:paddingStart="?android:attr/listPreferredItemPaddingStart">
+
+    <Button
+        android:id="@+id/reset_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:background="@drawable/accessibility_text_reading_reset_button_background"
+        android:paddingHorizontal="24dp"
+        android:paddingVertical="14dp"
+        android:text="@string/accessibility_text_reading_reset_button_title"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+</FrameLayout>

res/values/strings.xml

@@ -5233,6 +5233,8 @@
     <string name="accessibility_text_reading_preview_mail_from">From: bill@email.com</string>
     <!-- Content for the mail content of the accessibility text reading preview. [CHAR LIMIT=NONE] -->
     <string name="accessibility_text_reading_preview_mail_content">Good morning! Following up on our last conversation, I’d like to check in on the progress of your time machine development plan. Will you be able to have a prototype ready to demo at E3 this year?</string>
+    <!-- Title for the reset button of the accessibility text reading page to reset all preferences state. [CHAR LIMIT=NONE] -->
+    <string name="accessibility_text_reading_reset_button_title">Reset</string>
     <!-- Title for the footer text to explain what option accessibility service does. [CHAR LIMIT=35] -->
     <string name="accessibility_screen_option">Options</string>
     <!-- Summary for the accessibility preference to enable screen magnification. [CHAR LIMIT=25] -->

res/xml/accessibility_text_reading_options.xml

@@ -57,4 +57,10 @@
         android:persistent="false"
         android:title="@string/accessibility_toggle_high_text_contrast_preference_title"
         settings:controller="com.android.settings.accessibility.HighTextContrastPreferenceController"/>
+
+    <com.android.settingslib.widget.LayoutPreference
+        android:key="reset"
+        android:layout="@layout/accessibility_text_reading_reset_button"
+        android:persistent="false"
+        android:selectable="false" />
 </PreferenceScreen>

src/com/android/settings/accessibility/PreviewSizeSeekBarController.java

@@ -29,10 +29,12 @@ import com.android.settings.widget.LabeledSeekBarPreference;
  * The controller of {@link LabeledSeekBarPreference} that listens to display size and font size
  * settings changes and updates preview size threshold smoothly.
  */
-class PreviewSizeSeekBarController extends BasePreferenceController {
+class PreviewSizeSeekBarController extends BasePreferenceController implements
+        TextReadingResetController.ResetStateListener {
     private final PreviewSizeData<? extends Number> mSizeData;
     private boolean mSeekByTouch;
     private ProgressInteractionListener mInteractionListener;
+    private LabeledSeekBarPreference mSeekBarPreference;
 
     private final SeekBar.OnSeekBarChangeListener mSeekBarChangeListener =
             new SeekBar.OnSeekBarChangeListener() {
@@ -81,13 +83,17 @@ class PreviewSizeSeekBarController extends BasePreferenceController {
 
         final int dataSize = mSizeData.getValues().size();
         final int initialIndex = mSizeData.getInitialIndex();
-        final LabeledSeekBarPreference seekBarPreference =
-                screen.findPreference(getPreferenceKey());
+        mSeekBarPreference = screen.findPreference(getPreferenceKey());
+        mSeekBarPreference.setMax(dataSize - 1);
+        mSeekBarPreference.setProgress(initialIndex);
+        mSeekBarPreference.setContinuousUpdates(true);
+        mSeekBarPreference.setOnSeekBarChangeListener(mSeekBarChangeListener);
+    }
 
-        seekBarPreference.setMax(dataSize - 1);
-        seekBarPreference.setProgress(initialIndex);
-        seekBarPreference.setContinuousUpdates(true);
-        seekBarPreference.setOnSeekBarChangeListener(mSeekBarChangeListener);
+    @Override
+    public void resetState() {
+        final int defaultProgress = mSizeData.getValues().indexOf(mSizeData.getDefaultValue());
+        mSeekBarPreference.setProgress(defaultProgress);
     }
 
     /**

src/com/android/settings/accessibility/TextReadingPreferenceFragment.java

@@ -16,6 +16,8 @@
 
 package com.android.settings.accessibility;
 
+import static com.android.settings.accessibility.TextReadingResetController.ResetStateListener;
+
 import android.app.settings.SettingsEnums;
 import android.content.Context;
 
@@ -27,6 +29,7 @@ import com.android.settingslib.search.SearchIndexable;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * Accessibility settings for adjusting the system features which are related to the reading. For
@@ -38,6 +41,7 @@ public class TextReadingPreferenceFragment extends DashboardFragment {
     private static final String FONT_SIZE_KEY = "font_size";
     private static final String DISPLAY_SIZE_KEY = "display_size";
     private static final String PREVIEW_KEY = "preview";
+    private static final String RESET_KEY = "reset";
 
     @Override
     protected int getPreferenceScreenResId() {
@@ -74,6 +78,13 @@ public class TextReadingPreferenceFragment extends DashboardFragment {
         displaySizeController.setInteractionListener(previewController);
         controllers.add(displaySizeController);
 
+        final List<ResetStateListener> resetStateListeners =
+                controllers.stream().filter(c -> c instanceof ResetStateListener).map(
+                        c -> (ResetStateListener) c).collect(Collectors.toList());
+        final TextReadingResetController resetController =
+                new TextReadingResetController(context, RESET_KEY, resetStateListeners);
+        controllers.add(resetController);
+
         return controllers;
     }
 

src/com/android/settings/accessibility/TextReadingResetController.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2022 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.accessibility;
+
+import android.content.Context;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.widget.LayoutPreference;
+
+import java.util.List;
+
+/**
+ * The controller of the reset button in the text and reading options page.
+ */
+class TextReadingResetController extends BasePreferenceController {
+    private final List<ResetStateListener> mListeners;
+
+    TextReadingResetController(Context context, String preferenceKey,
+            @NonNull List<ResetStateListener> listeners) {
+        super(context, preferenceKey);
+        mListeners = listeners;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        final LayoutPreference layoutPreference = screen.findPreference(getPreferenceKey());
+        final View view = layoutPreference.findViewById(R.id.reset_button);
+        view.setOnClickListener(v -> mListeners.forEach(ResetStateListener::resetState));
+    }
+
+    /**
+     * Interface for resetting to default state.
+     */
+    interface ResetStateListener {
+        /**
+         * Called when the reset button was clicked.
+         */
+        void resetState();
+    }
+}

tests/robotests/src/com/android/settings/accessibility/PreviewSizeSeekBarControllerTest.java

@@ -82,4 +82,17 @@ public class PreviewSizeSeekBarControllerTest {
 
         verify(mSeekBarPreference).setProgress(mFontSizeData.getInitialIndex());
     }
+
+    @Test
+    public void resetToDefaultState_matchResult() {
+        final int defaultProgress =
+                mFontSizeData.getValues().indexOf(mFontSizeData.getDefaultValue());
+        when(mPreferenceScreen.findPreference(anyString())).thenReturn(mSeekBarPreference);
+
+        mSeekBarController.displayPreference(mPreferenceScreen);
+        mSeekBarPreference.setProgress(defaultProgress + 1);
+        mSeekBarController.resetState();
+
+        assertThat(mSeekBarPreference.getProgress()).isEqualTo(defaultProgress);
+    }
 }

tests/robotests/src/com/android/settings/accessibility/TextReadingResetControllerTest.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2022 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.accessibility;
+
+import static com.android.settings.accessibility.TextReadingResetController.ResetStateListener;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.view.View;
+
+import androidx.preference.PreferenceScreen;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.widget.LayoutPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Tests for {@link TextReadingResetController}.
+ */
+@RunWith(RobolectricTestRunner.class)
+public class TextReadingResetControllerTest {
+    private static final String TEST_KEY = "test";
+    private static final String RESET_KEY = "reset";
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private final View mResetView = new View(mContext);
+    private final List<ResetStateListener> mListeners = new ArrayList<>();
+    private TextReadingResetController mResetController;
+    private TestPreferenceController mPreferenceController;
+
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+
+    @Mock
+    private LayoutPreference mLayoutPreference;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mPreferenceController = new TestPreferenceController(mContext, TEST_KEY);
+        mListeners.add(mPreferenceController);
+        mResetController = new TextReadingResetController(mContext, RESET_KEY, mListeners);
+    }
+
+    @Test
+    public void setClickListener_success() {
+        setupResetButton();
+
+        mResetController.displayPreference(mPreferenceScreen);
+
+        assertThat(mResetView.hasOnClickListeners()).isTrue();
+    }
+
+    @Test
+    public void triggerResetState_success() {
+        setupResetButton();
+
+        mResetController.displayPreference(mPreferenceScreen);
+        mResetView.callOnClick();
+
+        assertThat(mPreferenceController.isReset()).isTrue();
+    }
+
+    private void setupResetButton() {
+        when(mPreferenceScreen.findPreference(RESET_KEY)).thenReturn(mLayoutPreference);
+        when(mLayoutPreference.findViewById(R.id.reset_button)).thenReturn(mResetView);
+    }
+
+    private static class TestPreferenceController extends BasePreferenceController implements
+            ResetStateListener {
+        private boolean mIsReset = false;
+
+        TestPreferenceController(Context context, String preferenceKey) {
+            super(context, preferenceKey);
+        }
+
+        @Override
+        public void resetState() {
+            mIsReset = true;
+        }
+
+        @Override
+        public int getAvailabilityStatus() {
+            return AVAILABLE;
+        }
+
+        boolean isReset() {
+            return mIsReset;
+        }
+    }
+}