Fix that device isn't responding for a while when resetting all settings on...

import android.app.settings.SettingsEnums;

import android.content.Context;

import android.content.DialogInterface;

import android.os.Bundle;

import androidx.appcompat.app.AlertDialog;

import com.android.settingslib.core.AbstractPreferenceController;

import com.android.settingslib.search.SearchIndexable;

import com.google.common.annotations.VisibleForTesting;

import java.util.ArrayList;

import java.util.List;

import java.util.stream.Collectors;

    private static final String RESET_KEY = "reset";

    private static final String BOLD_TEXT_KEY = "toggle_force_bold_text";

    private static final String HIGHT_TEXT_CONTRAST_KEY = "toggle_high_text_contrast_preference";

    private static final String NEED_RESET_SETTINGS = "need_reset_settings";

    private FontWeightAdjustmentPreferenceController mFontWeightAdjustmentController;

    @VisibleForTesting

    List<ResetStateListener> mResetStateListeners;

    @VisibleForTesting

    boolean mNeedResetSettings;

    @Override

    public void onCreate(Bundle icicle) {

        super.onCreate(icicle);

        mNeedResetSettings = false;

        mResetStateListeners = getResetStateListeners();

        if (icicle != null && icicle.getBoolean(NEED_RESET_SETTINGS)) {

            mResetStateListeners.forEach(ResetStateListener::resetState);

        }

    }

    @Override

    protected int getPreferenceScreenResId() {

    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {

        final List<AbstractPreferenceController> controllers = new ArrayList<>();

        final FontSizeData fontSizeData = new FontSizeData(context);

        final DisplaySizeData displaySizeData = new DisplaySizeData(context);

        final DisplaySizeData displaySizeData = createDisplaySizeData(context);

        final TextReadingPreviewController previewController = new TextReadingPreviewController(

                context, PREVIEW_KEY, fontSizeData, displaySizeData);

        displaySizeController.setInteractionListener(previewController);

        controllers.add(displaySizeController);

        final FontWeightAdjustmentPreferenceController fontWeightController =

        mFontWeightAdjustmentController =

                new FontWeightAdjustmentPreferenceController(context, BOLD_TEXT_KEY);

        controllers.add(fontWeightController);

        controllers.add(mFontWeightAdjustmentController);

        final HighTextContrastPreferenceController highTextContrastController =

                new HighTextContrastPreferenceController(context, HIGHT_TEXT_CONTRAST_KEY);

        return super.getDialogMetricsCategory(dialogId);

    }

    @Override

    public void onSaveInstanceState(Bundle outState) {

        if (mNeedResetSettings) {

            outState.putBoolean(NEED_RESET_SETTINGS, true);

        }

    }

    @VisibleForTesting

    DisplaySizeData createDisplaySizeData(Context context) {

        return new DisplaySizeData(context);

    }

    private void onPositiveButtonClicked(DialogInterface dialog, int which) {

        // To avoid showing the dialog again, probably the onDetach() of SettingsDialogFragment

        // was interrupted by unexpectedly recreating the activity.

        removeDialog(DialogEnums.DIALOG_RESET_SETTINGS);

        getResetStateListeners().forEach(ResetStateListener::resetState);

        if (mFontWeightAdjustmentController.isChecked()) {

            // TODO(b/228956791): Consider replacing or removing it once the root cause is

            //  clarified and the better method is available.

            // Probably has the race condition issue between "Bold text" and  the other features

            // including "Display Size", “Font Size” if they would be enabled at the same time,

            // so our workaround is that the “Bold text” would be reset first and then do the

            // remaining to avoid flickering problem.

            mNeedResetSettings = true;

            mFontWeightAdjustmentController.resetState();

        } else {

            mResetStateListeners.forEach(ResetStateListener::resetState);

        }

    }

    private List<ResetStateListener> getResetStateListeners() {

/*

 * 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.FontWeightAdjustmentPreferenceController.BOLD_TEXT_ADJUSTMENT;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.Mockito.doReturn;

import static org.mockito.Mockito.mock;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

import static org.mockito.Mockito.when;

import android.content.Context;

import android.content.DialogInterface;

import android.provider.Settings;

import androidx.appcompat.app.AlertDialog;

import androidx.fragment.app.FragmentActivity;

import androidx.preference.PreferenceManager;

import androidx.test.core.app.ApplicationProvider;

import com.android.settings.R;

import com.android.settings.accessibility.AccessibilityDialogUtils.DialogEnums;

import com.android.settings.accessibility.TextReadingResetController.ResetStateListener;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Answers;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

import org.robolectric.Robolectric;

import org.robolectric.RobolectricTestRunner;

import java.util.ArrayList;

import java.util.Arrays;

/**

 * Tests for {@link TextReadingPreferenceFragment}.

 */

@RunWith(RobolectricTestRunner.class)

public class TextReadingPreferenceFragmentTest {

    private TextReadingPreferenceFragment mFragment;

    private Context mContext = ApplicationProvider.getApplicationContext();

    @Mock(answer = Answers.RETURNS_DEEP_STUBS)

    private PreferenceManager mPreferenceManager;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mContext.setTheme(R.style.Theme_AppCompat);

        mFragment = spy(new TextReadingPreferenceFragment());

        when(mFragment.getPreferenceManager()).thenReturn(mPreferenceManager);

        when(mFragment.getPreferenceManager().getContext()).thenReturn(mContext);

        when(mFragment.getContext()).thenReturn(mContext);

        when(mFragment.getActivity()).thenReturn(Robolectric.setupActivity(FragmentActivity.class));

        // Avoid a NPE is happened in ShadowWindowManagerGlobal

        doReturn(mock(DisplaySizeData.class)).when(mFragment).createDisplaySizeData(mContext);

        mFragment.createPreferenceControllers(mContext);

    }

    @Test

    public void onDialogPositiveButtonClicked_boldTextEnabled_needResetSettings() {

        Settings.Secure.putInt(mContext.getContentResolver(),

                Settings.Secure.FONT_WEIGHT_ADJUSTMENT, BOLD_TEXT_ADJUSTMENT);

        final AlertDialog dialog = (AlertDialog) mFragment.onCreateDialog(

                DialogEnums.DIALOG_RESET_SETTINGS);

        dialog.show();

        dialog.getButton(DialogInterface.BUTTON_POSITIVE).callOnClick();

        assertThat(mFragment.mNeedResetSettings).isTrue();

    }

    @Test

    public void onDialogPositiveButtonClicked_boldTextDisabled_resetAllListeners() {

        final ResetStateListener listener1 = mock(ResetStateListener.class);

        final ResetStateListener listener2 = mock(ResetStateListener.class);

        mFragment.mResetStateListeners = new ArrayList<>(Arrays.asList(listener1, listener2));

        final AlertDialog dialog = (AlertDialog) mFragment.onCreateDialog(

                DialogEnums.DIALOG_RESET_SETTINGS);

        dialog.show();

        dialog.getButton(DialogInterface.BUTTON_POSITIVE).callOnClick();

        verify(listener1).resetState();

        verify(listener2).resetState();

    }

}