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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.notification;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.support.v7.preference.TwoStatePreference;
import android.util.Log;
import com.android.settings.core.PreferenceController;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
import static android.provider.Settings.System.NOTIFICATION_LIGHT_PULSE;
public class PulseNotificationPreferenceController extends PreferenceController implements
Preference.OnPreferenceChangeListener, LifecycleObserver, OnResume, OnPause {
private static final String TAG = "PulseNotifPrefContr";
private static final String KEY_NOTIFICATION_PULSE = "notification_pulse";
private SettingObserver mSettingObserver;
public PulseNotificationPreferenceController(Context context) {
super(context);
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
Preference preference = screen.findPreference(KEY_NOTIFICATION_PULSE);
if (preference != null) {
mSettingObserver = new SettingObserver(preference);
}
}
@Override
public void onResume() {
if (mSettingObserver != null) {
mSettingObserver.register(mContext.getContentResolver(), true /* register */);
}
}
@Override
public void onPause() {
if (mSettingObserver != null) {
mSettingObserver.register(mContext.getContentResolver(), false /* register */);
}
}
@Override
public String getPreferenceKey() {
return KEY_NOTIFICATION_PULSE;
}
@Override
public boolean isAvailable() {
return mContext.getResources()
.getBoolean(com.android.internal.R.bool.config_intrusiveNotificationLed);
}
@Override
public void updateState(Preference preference) {
try {
final boolean checked = Settings.System.getInt(mContext.getContentResolver(),
NOTIFICATION_LIGHT_PULSE) == 1;
((TwoStatePreference) preference).setChecked(checked);
} catch (Settings.SettingNotFoundException snfe) {
Log.e(TAG, NOTIFICATION_LIGHT_PULSE + " not found");
}
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
final boolean val = (Boolean) newValue;
return Settings.System.putInt(mContext.getContentResolver(),
NOTIFICATION_LIGHT_PULSE, val ? 1 : 0);
}
class SettingObserver extends ContentObserver {
private final Uri NOTIFICATION_LIGHT_PULSE_URI =
Settings.System.getUriFor(Settings.System.NOTIFICATION_LIGHT_PULSE);
private final Preference mPreference;
public SettingObserver(Preference preference) {
super(new Handler());
mPreference = preference;
}
public void register(ContentResolver cr, boolean register) {
if (register) {
cr.registerContentObserver(NOTIFICATION_LIGHT_PULSE_URI, false, this);
} else {
cr.unregisterContentObserver(this);
}
}
@Override
public void onChange(boolean selfChange, Uri uri) {
super.onChange(selfChange, uri);
if (NOTIFICATION_LIGHT_PULSE_URI.equals(uri)) {
updateState(mPreference);
}
}
}
}
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