app_Settings/src/com/android/settings/accessibility/AccessibilityControlTimeoutPreferenceFragment.java

/*
 * Copyright (C) 2018 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.app.settings.SettingsEnums;
import android.content.Context;
import android.content.res.Resources;

import androidx.preference.Preference;

import com.android.settings.R;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.search.SearchIndexable;

import java.util.ArrayList;
import java.util.List;

/** Settings fragment containing accessibility control timeout preference. */
@SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
public final class AccessibilityControlTimeoutPreferenceFragment extends DashboardFragment
        implements AccessibilityTimeoutController.OnChangeListener {

    static final String TAG = "AccessibilityControlTimeoutPreferenceFragment";
    private static final List<AbstractPreferenceController> sControllers = new ArrayList<>();

    @Override
    public void onCheckedChanged(Preference preference) {
        for (AbstractPreferenceController controller : sControllers) {
            controller.updateState(preference);
        }
    }

    @Override
    public void onResume() {
        super.onResume();

        for (AbstractPreferenceController controller :
                buildPreferenceControllers(getPrefContext(), getSettingsLifecycle())) {
            ((AccessibilityTimeoutController)controller).setOnChangeListener(this);
        }
    }

    @Override
    public void onPause() {
        super.onPause();

        for (AbstractPreferenceController controller :
                buildPreferenceControllers(getPrefContext(), getSettingsLifecycle())) {
            ((AccessibilityTimeoutController)controller).setOnChangeListener(null);
        }
    }

    @Override
    public int getMetricsCategory() {
        return SettingsEnums.ACCESSIBILITY;
    }

    @Override
    protected String getLogTag() {
        return TAG;
    }

    @Override
    protected int getPreferenceScreenResId() {
        return R.xml.accessibility_control_timeout_settings;
    }

    @Override
    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
        return buildPreferenceControllers(context, getSettingsLifecycle());
    }

    @Override
    public int getHelpResource() {
        return R.string.help_url_timeout;
    }

    private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
            Lifecycle lifecycle) {
        if (sControllers.size() == 0) {
            Resources resources = context.getResources();

            String[] timeoutKeys = resources.getStringArray(
                    R.array.accessibility_timeout_control_selector_keys);

            for (int i=0; i < timeoutKeys.length; i++) {
                sControllers.add(new AccessibilityTimeoutController(
                        context, lifecycle, timeoutKeys[i]));
            }
        }
        return sControllers;
    }

    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
            new BaseSearchIndexProvider(R.xml.accessibility_control_timeout_settings) {

                @Override
                public List<AbstractPreferenceController> createPreferenceControllers(
                        Context context) {
                    return buildPreferenceControllers(context, null);
                }
            };
}