1 /*
2  * Copyright (C) 2018 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.server.deviceidle;
18 
19 import android.annotation.Nullable;
20 import android.content.Context;
21 import android.content.pm.PackageManager;
22 import android.os.Handler;
23 
24 import com.android.server.DeviceIdleInternal;
25 import com.android.server.LocalServices;
26 
27 /**
28  * Device idle constraints for television devices.
29  *
30  * <p>Televisions are devices with {@code FEATURE_LEANBACK_ONLY}. Other devices might support
31  * some kind of leanback mode but they should not follow the same rules for idle state.
32  */
33 public class TvConstraintController implements ConstraintController {
34     private final Context mContext;
35     private final Handler mHandler;
36     private final DeviceIdleInternal mDeviceIdleService;
37 
38     @Nullable
39     private final BluetoothConstraint mBluetoothConstraint;
40 
TvConstraintController(Context context, Handler handler)41     public TvConstraintController(Context context, Handler handler) {
42         mContext = context;
43         mHandler = handler;
44         mDeviceIdleService = LocalServices.getService(DeviceIdleInternal.class);
45 
46         final PackageManager pm = context.getPackageManager();
47         mBluetoothConstraint = pm.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)
48                 ? new BluetoothConstraint(mContext, mHandler, mDeviceIdleService)
49                 : null;
50     }
51 
52     @Override
start()53     public void start() {
54         if (mBluetoothConstraint != null) {
55             mDeviceIdleService.registerDeviceIdleConstraint(
56                     mBluetoothConstraint, "bluetooth", IDeviceIdleConstraint.SENSING_OR_ABOVE);
57         }
58     }
59 
60     @Override
stop()61     public void stop() {
62         if (mBluetoothConstraint != null) {
63             mDeviceIdleService.unregisterDeviceIdleConstraint(mBluetoothConstraint);
64         }
65     }
66 }
67