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/*
* Copyright (C) 2015 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.deskclock.data;
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 com.android.deskclock.provider.Alarm;
/**
* All alarm data will eventually be accessed via this model.
*/
final class AlarmModel {
/** The model from which settings are fetched. */
private final SettingsModel mSettingsModel;
/** The uri of the default ringtone to play for new alarms; mirrors last selection. */
private Uri mDefaultAlarmRingtoneUri;
AlarmModel(Context context, SettingsModel settingsModel) {
mSettingsModel = settingsModel;
// Clear caches affected by system settings when system settings change.
final ContentResolver cr = context.getContentResolver();
final ContentObserver observer = new SystemAlarmAlertChangeObserver();
cr.registerContentObserver(Settings.System.DEFAULT_ALARM_ALERT_URI, false, observer);
}
Uri getDefaultAlarmRingtoneUri() {
if (mDefaultAlarmRingtoneUri == null) {
mDefaultAlarmRingtoneUri = mSettingsModel.getDefaultAlarmRingtoneUri();
}
return mDefaultAlarmRingtoneUri;
}
void setDefaultAlarmRingtoneUri(Uri uri) {
// Never set the silent ringtone as default; new alarms should always make sound by default.
if (!Alarm.NO_RINGTONE_URI.equals(uri)) {
mSettingsModel.setDefaultAlarmRingtoneUri(uri);
mDefaultAlarmRingtoneUri = uri;
}
}
/**
* This receiver is notified when system settings change. Cached information built on
* those system settings must be cleared.
*/
private final class SystemAlarmAlertChangeObserver extends ContentObserver {
private SystemAlarmAlertChangeObserver() {
super(new Handler());
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
mDefaultAlarmRingtoneUri = null;
}
}
}
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