/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the
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* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package com.android.settings.display;
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import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;
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import android.app.admin.DevicePolicyManager;
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import android.content.Context;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.provider.Settings;
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import android.util.Log;
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import androidx.preference.Preference;
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import com.android.settings.R;
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import com.android.settings.core.PreferenceControllerMixin;
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import com.android.settingslib.RestrictedLockUtils;
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import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
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import com.android.settingslib.RestrictedLockUtilsInternal;
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import com.android.settingslib.core.AbstractPreferenceController;
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public class TimeoutPreferenceController extends AbstractPreferenceController implements
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PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
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private static final String TAG = "TimeoutPrefContr";
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/** If there is no setting in the provider, use this. */
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public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;
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private final String mScreenTimeoutKey;
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public TimeoutPreferenceController(Context context, String key) {
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super(context);
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mScreenTimeoutKey = key;
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}
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@Override
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public boolean isAvailable() {
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return true;
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}
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@Override
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public String getPreferenceKey() {
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return mScreenTimeoutKey;
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}
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@Override
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public void updateState(Preference preference) {
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final TimeoutListPreference timeoutListPreference = (TimeoutListPreference) preference;
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final long currentTimeout = Settings.System.getLong(mContext.getContentResolver(),
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SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE);
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timeoutListPreference.setValue(String.valueOf(currentTimeout));
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final DevicePolicyManager dpm =
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(DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE);
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if (dpm != null) {
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final RestrictedLockUtils.EnforcedAdmin admin =
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RestrictedLockUtilsInternal.checkIfMaximumTimeToLockIsSet(mContext);
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final long maxTimeout =
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dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId());
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timeoutListPreference.removeUnusableTimeouts(maxTimeout, admin);
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}
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updateTimeoutPreferenceDescription(timeoutListPreference,
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Long.parseLong(timeoutListPreference.getValue()));
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final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
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mContext, UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT,
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UserHandle.myUserId());
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if (admin != null) {
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timeoutListPreference.removeUnusableTimeouts(0/* disable all*/, admin);
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}
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}
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@Override
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public boolean onPreferenceChange(Preference preference, Object newValue) {
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try {
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int value = Integer.parseInt((String) newValue);
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Settings.System.putInt(mContext.getContentResolver(), SCREEN_OFF_TIMEOUT, value);
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updateTimeoutPreferenceDescription((TimeoutListPreference) preference, value);
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} catch (NumberFormatException e) {
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Log.e(TAG, "could not persist screen timeout setting", e);
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}
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return true;
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}
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public static CharSequence getTimeoutDescription(
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long currentTimeout, CharSequence[] entries, CharSequence[] values) {
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if (currentTimeout < 0 || entries == null || values == null
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|| values.length != entries.length) {
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return null;
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}
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for (int i = 0; i < values.length; i++) {
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long timeout = Long.parseLong(values[i].toString());
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if (currentTimeout == timeout) {
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return entries[i];
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}
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}
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return null;
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}
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private void updateTimeoutPreferenceDescription(TimeoutListPreference preference,
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long currentTimeout) {
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final CharSequence[] entries = preference.getEntries();
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final CharSequence[] values = preference.getEntryValues();
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final String summary;
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if (preference.isDisabledByAdmin()) {
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summary = mContext.getString(com.android.settings.R.string.disabled_by_policy_title);
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} else {
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final CharSequence timeoutDescription = getTimeoutDescription(
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currentTimeout, entries, values);
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summary = timeoutDescription == null
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? ""
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: mContext.getString(R.string.screen_timeout_summary, timeoutDescription);
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}
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preference.setSummary(summary);
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}
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}
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