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1 /*
2  * Copyright (C) 2014 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.systemui.statusbar.policy;
18 
19 import android.app.AlarmManager;
20 import android.content.BroadcastReceiver;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.content.IntentFilter;
24 import android.os.UserHandle;
25 
26 import java.io.FileDescriptor;
27 import java.io.PrintWriter;
28 import java.util.ArrayList;
29 
30 public class NextAlarmController extends BroadcastReceiver {
31 
32     private final ArrayList<NextAlarmChangeCallback> mChangeCallbacks = new ArrayList<>();
33 
34     private AlarmManager mAlarmManager;
35     private AlarmManager.AlarmClockInfo mNextAlarm;
36 
NextAlarmController(Context context)37     public NextAlarmController(Context context) {
38         mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
39         IntentFilter filter = new IntentFilter();
40         filter.addAction(Intent.ACTION_USER_SWITCHED);
41         filter.addAction(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED);
42         context.registerReceiverAsUser(this, UserHandle.ALL, filter, null, null);
43         updateNextAlarm();
44     }
45 
dump(FileDescriptor fd, PrintWriter pw, String[] args)46     public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
47         pw.println("NextAlarmController state:");
48         pw.print("  mNextAlarm="); pw.println(mNextAlarm);
49     }
50 
addStateChangedCallback(NextAlarmChangeCallback cb)51     public void addStateChangedCallback(NextAlarmChangeCallback cb) {
52         mChangeCallbacks.add(cb);
53         cb.onNextAlarmChanged(mNextAlarm);
54     }
55 
removeStateChangedCallback(NextAlarmChangeCallback cb)56     public void removeStateChangedCallback(NextAlarmChangeCallback cb) {
57         mChangeCallbacks.remove(cb);
58     }
59 
onReceive(Context context, Intent intent)60     public void onReceive(Context context, Intent intent) {
61         final String action = intent.getAction();
62         if (action.equals(Intent.ACTION_USER_SWITCHED)
63                 || action.equals(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED)) {
64             updateNextAlarm();
65         }
66     }
67 
updateNextAlarm()68     private void updateNextAlarm() {
69         mNextAlarm = mAlarmManager.getNextAlarmClock(UserHandle.USER_CURRENT);
70         fireNextAlarmChanged();
71     }
72 
fireNextAlarmChanged()73     private void fireNextAlarmChanged() {
74         int n = mChangeCallbacks.size();
75         for (int i = 0; i < n; i++) {
76             mChangeCallbacks.get(i).onNextAlarmChanged(mNextAlarm);
77         }
78     }
79 
80     public interface NextAlarmChangeCallback {
onNextAlarmChanged(AlarmManager.AlarmClockInfo nextAlarm)81         void onNextAlarmChanged(AlarmManager.AlarmClockInfo nextAlarm);
82     }
83 }
84