1 /*
2  * Copyright (C) 2017 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 package com.android.settings.bluetooth;
17 
18 import android.content.Context;
19 import android.support.v7.preference.PreferenceScreen;
20 
21 import com.android.internal.annotations.VisibleForTesting;
22 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
23 import com.android.settings.core.PreferenceController;
24 import com.android.settings.core.lifecycle.LifecycleObserver;
25 import com.android.settings.core.lifecycle.events.OnPause;
26 import com.android.settings.core.lifecycle.events.OnResume;
27 import com.android.settings.core.lifecycle.events.OnStart;
28 import com.android.settings.core.lifecycle.events.OnStop;
29 import com.android.settings.overlay.FeatureFactory;
30 import com.android.settings.widget.MasterSwitchController;
31 import com.android.settings.widget.MasterSwitchPreference;
32 import com.android.settings.widget.SummaryUpdater.OnSummaryChangeListener;
33 import com.android.settingslib.bluetooth.LocalBluetoothManager;
34 
35 public class BluetoothMasterSwitchPreferenceController extends PreferenceController
36         implements OnSummaryChangeListener,
37         LifecycleObserver, OnResume, OnPause, OnStart, OnStop {
38 
39     public static final String KEY_TOGGLE_BLUETOOTH = "toggle_bluetooth";
40 
41     private LocalBluetoothManager mBluetoothManager;
42     private MasterSwitchPreference mBtPreference;
43     private BluetoothEnabler mBluetoothEnabler;
44     private BluetoothSummaryUpdater mSummaryUpdater;
45     private RestrictionUtils mRestrictionUtils;
46 
BluetoothMasterSwitchPreferenceController(Context context, LocalBluetoothManager bluetoothManager)47     public BluetoothMasterSwitchPreferenceController(Context context,
48             LocalBluetoothManager bluetoothManager) {
49         this(context, bluetoothManager, new RestrictionUtils());
50     }
51 
52     @VisibleForTesting
BluetoothMasterSwitchPreferenceController(Context context, LocalBluetoothManager bluetoothManager, RestrictionUtils restrictionUtils)53     public BluetoothMasterSwitchPreferenceController(Context context,
54             LocalBluetoothManager bluetoothManager, RestrictionUtils restrictionUtils) {
55         super(context);
56         mBluetoothManager = bluetoothManager;
57         mSummaryUpdater = new BluetoothSummaryUpdater(mContext, this, mBluetoothManager);
58         mRestrictionUtils = restrictionUtils;
59     }
60 
61     @Override
displayPreference(PreferenceScreen screen)62     public void displayPreference(PreferenceScreen screen) {
63         super.displayPreference(screen);
64         mBtPreference = (MasterSwitchPreference) screen.findPreference(KEY_TOGGLE_BLUETOOTH);
65         mBluetoothEnabler = new BluetoothEnabler(mContext,
66             new MasterSwitchController(mBtPreference),
67             FeatureFactory.getFactory(mContext).getMetricsFeatureProvider(), mBluetoothManager,
68             MetricsEvent.ACTION_SETTINGS_MASTER_SWITCH_BLUETOOTH_TOGGLE,
69             mRestrictionUtils);
70     }
71 
72     @Override
isAvailable()73     public boolean isAvailable() {
74         return true;
75     }
76 
77     @Override
getPreferenceKey()78     public String getPreferenceKey() {
79         return KEY_TOGGLE_BLUETOOTH;
80     }
81 
onResume()82     public void onResume() {
83         mSummaryUpdater.register(true);
84     }
85 
86     @Override
onPause()87     public void onPause() {
88         mSummaryUpdater.register(false);
89     }
90 
91     @Override
onStart()92     public void onStart() {
93         if (mBluetoothEnabler != null) {
94             mBluetoothEnabler.resume(mContext);
95         }
96     }
97 
98     @Override
onStop()99     public void onStop() {
100         if (mBluetoothEnabler != null) {
101             mBluetoothEnabler.pause();
102         }
103     }
104 
105     @Override
onSummaryChanged(String summary)106     public void onSummaryChanged(String summary) {
107         if (mBtPreference != null) {
108             mBtPreference.setSummary(summary);
109         }
110     }
111 
112 }
113