src/com/android/settings/display/ScreenTimeoutSettings.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2020 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.display;

 import static android.app.admin.DevicePolicyResources.Strings.Settings.OTHER_OPTIONS_DISABLED_BY_ADMIN;
 import static android.hardware.SensorPrivacyManager.Sensors.CAMERA;
 import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;

 import android.app.admin.DevicePolicyManager;
 import android.app.settings.SettingsEnums;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.hardware.SensorPrivacyManager;
 import android.os.PowerManager;
 import android.os.UserHandle;
 import android.provider.Settings;
 import android.util.Log;

 import androidx.preference.PreferenceScreen;

 import com.android.settings.R;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.support.actionbar.HelpResourceProvider;
 import com.android.settings.widget.RadioButtonPickerFragment;
 import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedLockUtilsInternal;
 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
 import com.android.settingslib.search.SearchIndexable;
 import com.android.settingslib.search.SearchIndexableRaw;
 import com.android.settingslib.widget.CandidateInfo;
 import com.android.settingslib.widget.FooterPreference;
 import com.android.settingslib.widget.SelectorWithWidgetPreference;

 import com.google.common.annotations.VisibleForTesting;

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

 /**
  * Fragment that is used to control screen timeout.
  */
 @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
 public class ScreenTimeoutSettings extends RadioButtonPickerFragment implements
         HelpResourceProvider {
     private static final String TAG = "ScreenTimeout";
     /** If there is no setting in the provider, use this. */
     public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;

     private static final int DEFAULT_ORDER_OF_LOWEST_PREFERENCE = Integer.MAX_VALUE - 1;

     private CharSequence[] mInitialEntries;
     private CharSequence[] mInitialValues;
     private FooterPreference mPrivacyPreference;
     private final MetricsFeatureProvider mMetricsFeatureProvider;
     private SensorPrivacyManager mPrivacyManager;
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             mAdaptiveSleepBatterySaverPreferenceController.updateVisibility();
             mAdaptiveSleepController.updatePreference();
         }
     };

     private DevicePolicyManager mDevicePolicyManager;
     private SensorPrivacyManager.OnSensorPrivacyChangedListener mPrivacyChangedListener;

     @VisibleForTesting
     Context mContext;

     @VisibleForTesting
     RestrictedLockUtils.EnforcedAdmin mAdmin;

     @VisibleForTesting
     FooterPreference mDisableOptionsPreference;

     @VisibleForTesting
     AdaptiveSleepPermissionPreferenceController mAdaptiveSleepPermissionController;

     @VisibleForTesting
     AdaptiveSleepCameraStatePreferenceController mAdaptiveSleepCameraStatePreferenceController;

     @VisibleForTesting
     AdaptiveSleepPreferenceController mAdaptiveSleepController;

     @VisibleForTesting
     AdaptiveSleepBatterySaverPreferenceController mAdaptiveSleepBatterySaverPreferenceController;

     public ScreenTimeoutSettings() {
         super();
         mMetricsFeatureProvider = FeatureFactory.getFactory(getContext())
                 .getMetricsFeatureProvider();
     }

     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
         mContext = context;
         mDevicePolicyManager = mContext.getSystemService(DevicePolicyManager.class);
         mInitialEntries = getResources().getStringArray(R.array.screen_timeout_entries);
         mInitialValues = getResources().getStringArray(R.array.screen_timeout_values);
         mAdaptiveSleepController = new AdaptiveSleepPreferenceController(context);
         mAdaptiveSleepPermissionController = new AdaptiveSleepPermissionPreferenceController(
                 context);
         mAdaptiveSleepCameraStatePreferenceController =
                 new AdaptiveSleepCameraStatePreferenceController(context, getLifecycle());
         mAdaptiveSleepBatterySaverPreferenceController =
                 new AdaptiveSleepBatterySaverPreferenceController(context);
         mPrivacyPreference = new FooterPreference(context);
         mPrivacyPreference.setIcon(R.drawable.ic_privacy_shield_24dp);
         mPrivacyPreference.setTitle(R.string.adaptive_sleep_privacy);
         mPrivacyPreference.setSelectable(false);
         mPrivacyPreference.setLayoutResource(R.layout.preference_footer);
         mPrivacyManager = SensorPrivacyManager.getInstance(context);
         mPrivacyChangedListener = (sensor, enabled) -> mAdaptiveSleepController.updatePreference();
     }

     @Override
     protected List<? extends CandidateInfo> getCandidates() {
         final List<CandidateInfo> candidates = new ArrayList<>();
         final long maxTimeout = getMaxScreenTimeout(getContext());
         if (mInitialValues != null) {
             for (int i = 0; i < mInitialValues.length; ++i) {
                 if (Long.parseLong(mInitialValues[i].toString()) <= maxTimeout) {
                     candidates.add(new TimeoutCandidateInfo(mInitialEntries[i],
                             mInitialValues[i].toString(), true));
                 }
             }
         } else {
             Log.e(TAG, "Screen timeout options do not exist.");
         }
         return candidates;
     }

     @Override
     public void onStart() {
         super.onStart();
         mAdaptiveSleepPermissionController.updateVisibility();
         mAdaptiveSleepCameraStatePreferenceController.updateVisibility();
         mAdaptiveSleepBatterySaverPreferenceController.updateVisibility();
         mAdaptiveSleepController.updatePreference();
         mContext.registerReceiver(mReceiver,
                 new IntentFilter(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED));
         mPrivacyManager.addSensorPrivacyListener(CAMERA, mPrivacyChangedListener);
     }

     @Override
     public void onStop() {
         super.onStop();
         mContext.unregisterReceiver(mReceiver);
         mPrivacyManager.removeSensorPrivacyListener(CAMERA, mPrivacyChangedListener);
     }

     @Override
     public void updateCandidates() {
         final String defaultKey = getDefaultKey();
         final PreferenceScreen screen = getPreferenceScreen();
         screen.removeAll();

         final List<? extends CandidateInfo> candidateList = getCandidates();
         if (candidateList == null) {
             return;
         }

         for (CandidateInfo info : candidateList) {
             SelectorWithWidgetPreference pref =
                     new SelectorWithWidgetPreference(getPrefContext());
             bindPreference(pref, info.getKey(), info, defaultKey);
             screen.addPreference(pref);
         }

         final long selectedTimeout = Long.parseLong(defaultKey);
         final long maxTimeout = getMaxScreenTimeout(getContext());
         if (!candidateList.isEmpty() && (selectedTimeout > maxTimeout)) {
             // The selected time out value is longer than the max timeout allowed by the admin.
             // Select the largest value from the list by default.
             final SelectorWithWidgetPreference preferenceWithLargestTimeout =
                     (SelectorWithWidgetPreference) screen.getPreference(candidateList.size() - 1);
             preferenceWithLargestTimeout.setChecked(true);
         }

         mPrivacyPreference = new FooterPreference(mContext);
         mPrivacyPreference.setIcon(R.drawable.ic_privacy_shield_24dp);
         mPrivacyPreference.setTitle(R.string.adaptive_sleep_privacy);
         mPrivacyPreference.setSelectable(false);
         mPrivacyPreference.setLayoutResource(R.layout.preference_footer);

         if (isScreenAttentionAvailable(getContext())) {
             mAdaptiveSleepPermissionController.addToScreen(screen);
             mAdaptiveSleepCameraStatePreferenceController.addToScreen(screen);
             mAdaptiveSleepController.addToScreen(screen);
             mAdaptiveSleepBatterySaverPreferenceController.addToScreen(screen);
             screen.addPreference(mPrivacyPreference);
         }

         if (mAdmin != null) {
             setupDisabledFooterPreference();
             screen.addPreference(mDisableOptionsPreference);
         }
     }

     @VisibleForTesting
     void setupDisabledFooterPreference() {
         final String textDisabledByAdmin = mDevicePolicyManager.getResources().getString(
                 OTHER_OPTIONS_DISABLED_BY_ADMIN, () -> getResources().getString(
                         R.string.admin_disabled_other_options));
         final String textMoreDetails = getResources().getString(R.string.admin_more_details);

         mDisableOptionsPreference = new FooterPreference(getContext());
         mDisableOptionsPreference.setTitle(textDisabledByAdmin);
         mDisableOptionsPreference.setSelectable(false);
         mDisableOptionsPreference.setLearnMoreText(textMoreDetails);
         mDisableOptionsPreference.setLearnMoreAction(v -> {
             RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getContext(), mAdmin);
         });
         mDisableOptionsPreference.setIcon(R.drawable.ic_info_outline_24dp);

         // The 'disabled by admin' preference should always be at the end of the setting page.
         mDisableOptionsPreference.setOrder(DEFAULT_ORDER_OF_LOWEST_PREFERENCE);
         mPrivacyPreference.setOrder(DEFAULT_ORDER_OF_LOWEST_PREFERENCE - 1);
     }

     @Override
     protected String getDefaultKey() {
         return getCurrentSystemScreenTimeout(getContext());
     }

     @Override
     protected boolean setDefaultKey(String key) {
         setCurrentSystemScreenTimeout(getContext(), key);
         return true;
     }

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

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

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

     private Long getMaxScreenTimeout(Context context) {
         if (context == null) {
             return Long.MAX_VALUE;
         }
         final DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class);
         if (dpm == null) {
             return Long.MAX_VALUE;
         }
         mAdmin = RestrictedLockUtilsInternal.checkIfMaximumTimeToLockIsSet(context);
         if (mAdmin != null) {
             return dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId());
         }
         return Long.MAX_VALUE;
     }

     private String getCurrentSystemScreenTimeout(Context context) {
         if (context == null) {
             return Long.toString(FALLBACK_SCREEN_TIMEOUT_VALUE);
         } else {
             return Long.toString(Settings.System.getLong(context.getContentResolver(),
                     SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE));
         }
     }

     private void setCurrentSystemScreenTimeout(Context context, String key) {
         try {
             if (context != null) {
                 final long value = Long.parseLong(key);
                 mMetricsFeatureProvider.action(context, SettingsEnums.ACTION_SCREEN_TIMEOUT_CHANGED,
                         (int) value);
                 Settings.System.putLong(context.getContentResolver(), SCREEN_OFF_TIMEOUT, value);
             }
         } catch (NumberFormatException e) {
             Log.e(TAG, "could not persist screen timeout setting", e);
         }
     }

     private static boolean isScreenAttentionAvailable(Context context) {
         return AdaptiveSleepPreferenceController.isAdaptiveSleepSupported(context);
     }

     private static class TimeoutCandidateInfo extends CandidateInfo {
         private final CharSequence mLabel;
         private final String mKey;

         TimeoutCandidateInfo(CharSequence label, String key, boolean enabled) {
             super(enabled);
             mLabel = label;
             mKey = key;
         }

         @Override
         public CharSequence loadLabel() {
             return mLabel;
         }

         @Override
         public Drawable loadIcon() {
             return null;
         }

         @Override
         public String getKey() {
             return mKey;
         }
     }

     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.screen_timeout_settings) {
                 public List<SearchIndexableRaw> getRawDataToIndex(Context context,
                         boolean enabled) {
                     if (!isScreenAttentionAvailable(context)) {
                         return null;
                     }
                     final Resources res = context.getResources();
                     final SearchIndexableRaw data = new SearchIndexableRaw(context);
                     data.title = res.getString(R.string.adaptive_sleep_title);
                     data.key = AdaptiveSleepPreferenceController.PREFERENCE_KEY;
                     data.keywords = res.getString(R.string.adaptive_sleep_title);

                     final List<SearchIndexableRaw> result = new ArrayList<>(1);
                     result.add(data);
                     return result;
                 }
             };
 }
	/*
	* Copyright (C) 2020 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.display;

	import static android.app.admin.DevicePolicyResources.Strings.Settings.OTHER_OPTIONS_DISABLED_BY_ADMIN;
	import static android.hardware.SensorPrivacyManager.Sensors.CAMERA;
	import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;

	import android.app.admin.DevicePolicyManager;
	import android.app.settings.SettingsEnums;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.res.Resources;
	import android.graphics.drawable.Drawable;
	import android.hardware.SensorPrivacyManager;
	import android.os.PowerManager;
	import android.os.UserHandle;
	import android.provider.Settings;
	import android.util.Log;

	import androidx.preference.PreferenceScreen;

	import com.android.settings.R;
	import com.android.settings.overlay.FeatureFactory;
	import com.android.settings.search.BaseSearchIndexProvider;
	import com.android.settings.support.actionbar.HelpResourceProvider;
	import com.android.settings.widget.RadioButtonPickerFragment;
	import com.android.settingslib.RestrictedLockUtils;
	import com.android.settingslib.RestrictedLockUtilsInternal;
	import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
	import com.android.settingslib.search.SearchIndexable;
	import com.android.settingslib.search.SearchIndexableRaw;
	import com.android.settingslib.widget.CandidateInfo;
	import com.android.settingslib.widget.FooterPreference;
	import com.android.settingslib.widget.SelectorWithWidgetPreference;

	import com.google.common.annotations.VisibleForTesting;

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

	/**
	* Fragment that is used to control screen timeout.
	*/
	@SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
	public class ScreenTimeoutSettings extends RadioButtonPickerFragment implements
	HelpResourceProvider {
	private static final String TAG = "ScreenTimeout";
	/** If there is no setting in the provider, use this. */
	public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;

	private static final int DEFAULT_ORDER_OF_LOWEST_PREFERENCE = Integer.MAX_VALUE - 1;

	private CharSequence[] mInitialEntries;
	private CharSequence[] mInitialValues;
	private FooterPreference mPrivacyPreference;
	private final MetricsFeatureProvider mMetricsFeatureProvider;
	private SensorPrivacyManager mPrivacyManager;
	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	mAdaptiveSleepBatterySaverPreferenceController.updateVisibility();
	mAdaptiveSleepController.updatePreference();
	}
	};

	private DevicePolicyManager mDevicePolicyManager;
	private SensorPrivacyManager.OnSensorPrivacyChangedListener mPrivacyChangedListener;

	@VisibleForTesting
	Context mContext;

	@VisibleForTesting
	RestrictedLockUtils.EnforcedAdmin mAdmin;

	@VisibleForTesting
	FooterPreference mDisableOptionsPreference;

	@VisibleForTesting
	AdaptiveSleepPermissionPreferenceController mAdaptiveSleepPermissionController;

	@VisibleForTesting
	AdaptiveSleepCameraStatePreferenceController mAdaptiveSleepCameraStatePreferenceController;

	@VisibleForTesting
	AdaptiveSleepPreferenceController mAdaptiveSleepController;

	@VisibleForTesting
	AdaptiveSleepBatterySaverPreferenceController mAdaptiveSleepBatterySaverPreferenceController;

	public ScreenTimeoutSettings() {
	super();
	mMetricsFeatureProvider = FeatureFactory.getFactory(getContext())
	.getMetricsFeatureProvider();
	}

	@Override
	public void onAttach(Context context) {
	super.onAttach(context);
	mContext = context;
	mDevicePolicyManager = mContext.getSystemService(DevicePolicyManager.class);
	mInitialEntries = getResources().getStringArray(R.array.screen_timeout_entries);
	mInitialValues = getResources().getStringArray(R.array.screen_timeout_values);
	mAdaptiveSleepController = new AdaptiveSleepPreferenceController(context);
	mAdaptiveSleepPermissionController = new AdaptiveSleepPermissionPreferenceController(
	context);
	mAdaptiveSleepCameraStatePreferenceController =
	new AdaptiveSleepCameraStatePreferenceController(context, getLifecycle());
	mAdaptiveSleepBatterySaverPreferenceController =
	new AdaptiveSleepBatterySaverPreferenceController(context);
	mPrivacyPreference = new FooterPreference(context);
	mPrivacyPreference.setIcon(R.drawable.ic_privacy_shield_24dp);
	mPrivacyPreference.setTitle(R.string.adaptive_sleep_privacy);
	mPrivacyPreference.setSelectable(false);
	mPrivacyPreference.setLayoutResource(R.layout.preference_footer);
	mPrivacyManager = SensorPrivacyManager.getInstance(context);
	mPrivacyChangedListener = (sensor, enabled) -> mAdaptiveSleepController.updatePreference();
	}

	@Override
	protected List<? extends CandidateInfo> getCandidates() {
	final List<CandidateInfo> candidates = new ArrayList<>();
	final long maxTimeout = getMaxScreenTimeout(getContext());
	if (mInitialValues != null) {
	for (int i = 0; i < mInitialValues.length; ++i) {
	if (Long.parseLong(mInitialValues[i].toString()) <= maxTimeout) {
	candidates.add(new TimeoutCandidateInfo(mInitialEntries[i],
	mInitialValues[i].toString(), true));
	}
	}
	} else {
	Log.e(TAG, "Screen timeout options do not exist.");
	}
	return candidates;
	}

	@Override
	public void onStart() {
	super.onStart();
	mAdaptiveSleepPermissionController.updateVisibility();
	mAdaptiveSleepCameraStatePreferenceController.updateVisibility();
	mAdaptiveSleepBatterySaverPreferenceController.updateVisibility();
	mAdaptiveSleepController.updatePreference();
	mContext.registerReceiver(mReceiver,
	new IntentFilter(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED));
	mPrivacyManager.addSensorPrivacyListener(CAMERA, mPrivacyChangedListener);
	}

	@Override
	public void onStop() {
	super.onStop();
	mContext.unregisterReceiver(mReceiver);
	mPrivacyManager.removeSensorPrivacyListener(CAMERA, mPrivacyChangedListener);
	}

	@Override
	public void updateCandidates() {
	final String defaultKey = getDefaultKey();
	final PreferenceScreen screen = getPreferenceScreen();
	screen.removeAll();

	final List<? extends CandidateInfo> candidateList = getCandidates();
	if (candidateList == null) {
	return;
	}

	for (CandidateInfo info : candidateList) {
	SelectorWithWidgetPreference pref =
	new SelectorWithWidgetPreference(getPrefContext());
	bindPreference(pref, info.getKey(), info, defaultKey);
	screen.addPreference(pref);
	}

	final long selectedTimeout = Long.parseLong(defaultKey);
	final long maxTimeout = getMaxScreenTimeout(getContext());
	if (!candidateList.isEmpty() && (selectedTimeout > maxTimeout)) {
	// The selected time out value is longer than the max timeout allowed by the admin.
	// Select the largest value from the list by default.
	final SelectorWithWidgetPreference preferenceWithLargestTimeout =
	(SelectorWithWidgetPreference) screen.getPreference(candidateList.size() - 1);
	preferenceWithLargestTimeout.setChecked(true);
	}

	mPrivacyPreference = new FooterPreference(mContext);
	mPrivacyPreference.setIcon(R.drawable.ic_privacy_shield_24dp);
	mPrivacyPreference.setTitle(R.string.adaptive_sleep_privacy);
	mPrivacyPreference.setSelectable(false);
	mPrivacyPreference.setLayoutResource(R.layout.preference_footer);

	if (isScreenAttentionAvailable(getContext())) {
	mAdaptiveSleepPermissionController.addToScreen(screen);
	mAdaptiveSleepCameraStatePreferenceController.addToScreen(screen);
	mAdaptiveSleepController.addToScreen(screen);
	mAdaptiveSleepBatterySaverPreferenceController.addToScreen(screen);
	screen.addPreference(mPrivacyPreference);
	}

	if (mAdmin != null) {
	setupDisabledFooterPreference();
	screen.addPreference(mDisableOptionsPreference);
	}
	}

	@VisibleForTesting
	void setupDisabledFooterPreference() {
	final String textDisabledByAdmin = mDevicePolicyManager.getResources().getString(
	OTHER_OPTIONS_DISABLED_BY_ADMIN, () -> getResources().getString(
	R.string.admin_disabled_other_options));
	final String textMoreDetails = getResources().getString(R.string.admin_more_details);

	mDisableOptionsPreference = new FooterPreference(getContext());
	mDisableOptionsPreference.setTitle(textDisabledByAdmin);
	mDisableOptionsPreference.setSelectable(false);
	mDisableOptionsPreference.setLearnMoreText(textMoreDetails);
	mDisableOptionsPreference.setLearnMoreAction(v -> {
	RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getContext(), mAdmin);
	});
	mDisableOptionsPreference.setIcon(R.drawable.ic_info_outline_24dp);

	// The 'disabled by admin' preference should always be at the end of the setting page.
	mDisableOptionsPreference.setOrder(DEFAULT_ORDER_OF_LOWEST_PREFERENCE);
	mPrivacyPreference.setOrder(DEFAULT_ORDER_OF_LOWEST_PREFERENCE - 1);
	}

	@Override
	protected String getDefaultKey() {
	return getCurrentSystemScreenTimeout(getContext());
	}

	@Override
	protected boolean setDefaultKey(String key) {
	setCurrentSystemScreenTimeout(getContext(), key);
	return true;
	}

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

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

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

	private Long getMaxScreenTimeout(Context context) {
	if (context == null) {
	return Long.MAX_VALUE;
	}
	final DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class);
	if (dpm == null) {
	return Long.MAX_VALUE;
	}
	mAdmin = RestrictedLockUtilsInternal.checkIfMaximumTimeToLockIsSet(context);
	if (mAdmin != null) {
	return dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId());
	}
	return Long.MAX_VALUE;
	}

	private String getCurrentSystemScreenTimeout(Context context) {
	if (context == null) {
	return Long.toString(FALLBACK_SCREEN_TIMEOUT_VALUE);
	} else {
	return Long.toString(Settings.System.getLong(context.getContentResolver(),
	SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE));
	}
	}

	private void setCurrentSystemScreenTimeout(Context context, String key) {
	try {
	if (context != null) {
	final long value = Long.parseLong(key);
	mMetricsFeatureProvider.action(context, SettingsEnums.ACTION_SCREEN_TIMEOUT_CHANGED,
	(int) value);
	Settings.System.putLong(context.getContentResolver(), SCREEN_OFF_TIMEOUT, value);
	}
	} catch (NumberFormatException e) {
	Log.e(TAG, "could not persist screen timeout setting", e);
	}
	}

	private static boolean isScreenAttentionAvailable(Context context) {
	return AdaptiveSleepPreferenceController.isAdaptiveSleepSupported(context);
	}

	private static class TimeoutCandidateInfo extends CandidateInfo {
	private final CharSequence mLabel;
	private final String mKey;

	TimeoutCandidateInfo(CharSequence label, String key, boolean enabled) {
	super(enabled);
	mLabel = label;
	mKey = key;
	}

	@Override
	public CharSequence loadLabel() {
	return mLabel;
	}

	@Override
	public Drawable loadIcon() {
	return null;
	}

	@Override
	public String getKey() {
	return mKey;
	}
	}

	public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
	new BaseSearchIndexProvider(R.xml.screen_timeout_settings) {
	public List<SearchIndexableRaw> getRawDataToIndex(Context context,
	boolean enabled) {
	if (!isScreenAttentionAvailable(context)) {
	return null;
	}
	final Resources res = context.getResources();
	final SearchIndexableRaw data = new SearchIndexableRaw(context);
	data.title = res.getString(R.string.adaptive_sleep_title);
	data.key = AdaptiveSleepPreferenceController.PREFERENCE_KEY;
	data.keywords = res.getString(R.string.adaptive_sleep_title);

	final List<SearchIndexableRaw> result = new ArrayList<>(1);
	result.add(data);
	return result;
	}
	};
	}