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
17package com.android.server.content;
18
19import android.app.usage.UsageStatsManagerInternal;
20import android.app.usage.UsageStatsManagerInternal.AppIdleStateChangeListener;
21import android.os.UserHandle;
22
23import com.android.server.LocalServices;
24
25/**
26 * Helper to listen for app idle and charging status changes and restart backed off
27 * sync operations.
28 */
29class AppIdleMonitor extends AppIdleStateChangeListener {
30
31    private final SyncManager mSyncManager;
32    private final UsageStatsManagerInternal mUsageStats;
33    private boolean mAppIdleParoleOn;
34
35    AppIdleMonitor(SyncManager syncManager) {
36        mSyncManager = syncManager;
37        mUsageStats = LocalServices.getService(UsageStatsManagerInternal.class);
38        mAppIdleParoleOn = mUsageStats.isAppIdleParoleOn();
39
40        mUsageStats.addAppIdleStateChangeListener(this);
41    }
42
43    void setAppIdleParoleOn(boolean appIdleParoleOn) {
44        if (mAppIdleParoleOn == appIdleParoleOn) {
45            return;
46        }
47        mAppIdleParoleOn = appIdleParoleOn;
48        if (mAppIdleParoleOn) {
49            mSyncManager.onAppNotIdle(null, UserHandle.USER_ALL);
50        }
51    }
52
53    boolean isAppIdle(String packageName, int uidForAppId, int userId) {
54        return !mAppIdleParoleOn && mUsageStats.isAppIdle(packageName, uidForAppId, userId);
55    }
56
57    @Override
58    public void onAppIdleStateChanged(String packageName, int userId, boolean idle) {
59        // Don't care if the app is becoming idle
60        if (idle) return;
61        mSyncManager.onAppNotIdle(packageName, userId);
62    }
63
64    @Override
65    public void onParoleStateChanged(boolean isParoleOn) {
66        setAppIdleParoleOn(isParoleOn);
67    }
68}
69