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
17package com.android.systemui.statusbar.policy;
18
19import android.app.AlarmManager;
20import android.content.BroadcastReceiver;
21import android.content.Context;
22import android.content.Intent;
23import android.content.IntentFilter;
24import android.os.UserHandle;
25
26import com.android.systemui.statusbar.policy.NextAlarmController.NextAlarmChangeCallback;
27
28import java.io.FileDescriptor;
29import java.io.PrintWriter;
30import java.util.ArrayList;
31
32public class NextAlarmControllerImpl extends BroadcastReceiver
33        implements NextAlarmController {
34
35    private final ArrayList<NextAlarmChangeCallback> mChangeCallbacks = new ArrayList<>();
36
37    private AlarmManager mAlarmManager;
38    private AlarmManager.AlarmClockInfo mNextAlarm;
39
40    public NextAlarmControllerImpl(Context context) {
41        mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
42        IntentFilter filter = new IntentFilter();
43        filter.addAction(Intent.ACTION_USER_SWITCHED);
44        filter.addAction(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED);
45        context.registerReceiverAsUser(this, UserHandle.ALL, filter, null, null);
46        updateNextAlarm();
47    }
48
49    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
50        pw.println("NextAlarmController state:");
51        pw.print("  mNextAlarm="); pw.println(mNextAlarm);
52    }
53
54    public void addCallback(NextAlarmChangeCallback cb) {
55        mChangeCallbacks.add(cb);
56        cb.onNextAlarmChanged(mNextAlarm);
57    }
58
59    public void removeCallback(NextAlarmChangeCallback cb) {
60        mChangeCallbacks.remove(cb);
61    }
62
63    public void onReceive(Context context, Intent intent) {
64        final String action = intent.getAction();
65        if (action.equals(Intent.ACTION_USER_SWITCHED)
66                || action.equals(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED)) {
67            updateNextAlarm();
68        }
69    }
70
71    private void updateNextAlarm() {
72        mNextAlarm = mAlarmManager.getNextAlarmClock(UserHandle.USER_CURRENT);
73        fireNextAlarmChanged();
74    }
75
76    private void fireNextAlarmChanged() {
77        int n = mChangeCallbacks.size();
78        for (int i = 0; i < n; i++) {
79            mChangeCallbacks.get(i).onNextAlarmChanged(mNextAlarm);
80        }
81    }
82}
83