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/*
* Copyright (C) 2016 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.provider.Settings.System.SCREEN_OFF_TIMEOUT;
import android.app.admin.DevicePolicyManager;
import android.content.Context;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.util.Log;
import com.android.settings.R;
import com.android.settings.TimeoutListPreference;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
import com.android.settingslib.core.AbstractPreferenceController;
public class TimeoutPreferenceController extends AbstractPreferenceController implements
PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
private static final String TAG = "TimeoutPrefContr";
/** If there is no setting in the provider, use this. */
public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;
private final String mScreenTimeoutKey;
public TimeoutPreferenceController(Context context, String key) {
super(context);
mScreenTimeoutKey = key;
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public String getPreferenceKey() {
return mScreenTimeoutKey;
}
@Override
public void updateState(Preference preference) {
final TimeoutListPreference timeoutListPreference = (TimeoutListPreference) preference;
final long currentTimeout = Settings.System.getLong(mContext.getContentResolver(),
SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE);
timeoutListPreference.setValue(String.valueOf(currentTimeout));
final DevicePolicyManager dpm =
(DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE);
if (dpm != null) {
final RestrictedLockUtils.EnforcedAdmin admin =
RestrictedLockUtils.checkIfMaximumTimeToLockIsSet(mContext);
final long maxTimeout =
dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId());
timeoutListPreference.removeUnusableTimeouts(maxTimeout, admin);
}
updateTimeoutPreferenceDescription(timeoutListPreference, currentTimeout);
EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(
mContext, UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT,
UserHandle.myUserId());
if(admin != null) {
timeoutListPreference.removeUnusableTimeouts(0/* disable all*/, admin);
}
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
try {
int value = Integer.parseInt((String) newValue);
Settings.System.putInt(mContext.getContentResolver(), SCREEN_OFF_TIMEOUT, value);
updateTimeoutPreferenceDescription((TimeoutListPreference) preference, value);
} catch (NumberFormatException e) {
Log.e(TAG, "could not persist screen timeout setting", e);
}
return true;
}
public static CharSequence getTimeoutDescription(
long currentTimeout, CharSequence[] entries, CharSequence[] values) {
if (currentTimeout < 0 || entries == null || values == null
|| values.length != entries.length) {
return null;
}
for (int i = 0; i < values.length; i++) {
long timeout = Long.parseLong(values[i].toString());
if (currentTimeout == timeout) {
return entries[i];
}
}
return null;
}
private void updateTimeoutPreferenceDescription(TimeoutListPreference preference,
long currentTimeout) {
final CharSequence[] entries = preference.getEntries();
final CharSequence[] values = preference.getEntryValues();
final String summary;
if (preference.isDisabledByAdmin()) {
summary = mContext.getString(com.android.settings.R.string.disabled_by_policy_title);
} else {
final CharSequence timeoutDescription = getTimeoutDescription(
currentTimeout, entries, values);
summary = timeoutDescription == null
? ""
: mContext.getString(R.string.screen_timeout_summary, timeoutDescription);
}
preference.setSummary(summary);
}
}
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