1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.deskclock.data; 18 19 import android.content.ContentResolver; 20 import android.content.Context; 21 import android.database.ContentObserver; 22 import android.net.Uri; 23 import android.os.Handler; 24 import android.provider.Settings; 25 26 import com.android.deskclock.data.DataModel.AlarmVolumeButtonBehavior; 27 import com.android.deskclock.provider.Alarm; 28 29 /** 30 * All alarm data will eventually be accessed via this model. 31 */ 32 final class AlarmModel { 33 34 /** The model from which settings are fetched. */ 35 private final SettingsModel mSettingsModel; 36 37 /** The uri of the default ringtone to play for new alarms; mirrors last selection. */ 38 private Uri mDefaultAlarmRingtoneUri; 39 AlarmModel(Context context, SettingsModel settingsModel)40 AlarmModel(Context context, SettingsModel settingsModel) { 41 mSettingsModel = settingsModel; 42 43 // Clear caches affected by system settings when system settings change. 44 final ContentResolver cr = context.getContentResolver(); 45 final ContentObserver observer = new SystemAlarmAlertChangeObserver(); 46 cr.registerContentObserver(Settings.System.DEFAULT_ALARM_ALERT_URI, false, observer); 47 } 48 getDefaultAlarmRingtoneUri()49 Uri getDefaultAlarmRingtoneUri() { 50 if (mDefaultAlarmRingtoneUri == null) { 51 mDefaultAlarmRingtoneUri = mSettingsModel.getDefaultAlarmRingtoneUri(); 52 } 53 54 return mDefaultAlarmRingtoneUri; 55 } 56 setDefaultAlarmRingtoneUri(Uri uri)57 void setDefaultAlarmRingtoneUri(Uri uri) { 58 // Never set the silent ringtone as default; new alarms should always make sound by default. 59 if (!Alarm.NO_RINGTONE_URI.equals(uri)) { 60 mSettingsModel.setDefaultAlarmRingtoneUri(uri); 61 mDefaultAlarmRingtoneUri = uri; 62 } 63 } 64 getAlarmCrescendoDuration()65 long getAlarmCrescendoDuration() { 66 return mSettingsModel.getAlarmCrescendoDuration(); 67 } 68 getAlarmVolumeButtonBehavior()69 AlarmVolumeButtonBehavior getAlarmVolumeButtonBehavior() { 70 return mSettingsModel.getAlarmVolumeButtonBehavior(); 71 } 72 getAlarmTimeout()73 int getAlarmTimeout() { 74 return mSettingsModel.getAlarmTimeout(); 75 } 76 getSnoozeLength()77 int getSnoozeLength() { 78 return mSettingsModel.getSnoozeLength(); 79 } 80 81 /** 82 * This receiver is notified when system settings change. Cached information built on 83 * those system settings must be cleared. 84 */ 85 private final class SystemAlarmAlertChangeObserver extends ContentObserver { 86 SystemAlarmAlertChangeObserver()87 private SystemAlarmAlertChangeObserver() { 88 super(new Handler()); 89 } 90 91 @Override onChange(boolean selfChange)92 public void onChange(boolean selfChange) { 93 super.onChange(selfChange); 94 mDefaultAlarmRingtoneUri = null; 95 } 96 } 97 }