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

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();
+    }
+}