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.connecteddevice; 17 18 import android.content.pm.PackageManager; 19 import android.content.Context; 20 import android.support.annotation.VisibleForTesting; 21 import android.support.v7.preference.Preference; 22 import android.support.v7.preference.PreferenceGroup; 23 import android.support.v7.preference.PreferenceScreen; 24 25 import com.android.settings.bluetooth.BluetoothDeviceUpdater; 26 import com.android.settings.bluetooth.ConnectedBluetoothDeviceUpdater; 27 import com.android.settings.connecteddevice.dock.DockUpdater; 28 import com.android.settings.connecteddevice.usb.ConnectedUsbDeviceUpdater; 29 import com.android.settings.core.BasePreferenceController; 30 import com.android.settings.core.PreferenceControllerMixin; 31 import com.android.settings.dashboard.DashboardFragment; 32 import com.android.settings.overlay.DockUpdaterFeatureProvider; 33 import com.android.settings.overlay.FeatureFactory; 34 import com.android.settingslib.core.lifecycle.events.OnStart; 35 import com.android.settingslib.core.lifecycle.events.OnStop; 36 import com.android.settingslib.core.lifecycle.LifecycleObserver; 37 38 /** 39 * Controller to maintain the {@link android.support.v7.preference.PreferenceGroup} for all 40 * connected devices. It uses {@link DevicePreferenceCallback} to add/remove {@link Preference} 41 */ 42 public class ConnectedDeviceGroupController extends BasePreferenceController 43 implements PreferenceControllerMixin, LifecycleObserver, OnStart, OnStop, 44 DevicePreferenceCallback { 45 46 private static final String KEY = "connected_device_list"; 47 48 @VisibleForTesting 49 PreferenceGroup mPreferenceGroup; 50 private BluetoothDeviceUpdater mBluetoothDeviceUpdater; 51 private ConnectedUsbDeviceUpdater mConnectedUsbDeviceUpdater; 52 private DockUpdater mConnectedDockUpdater; 53 ConnectedDeviceGroupController(Context context)54 public ConnectedDeviceGroupController(Context context) { 55 super(context, KEY); 56 } 57 58 @Override onStart()59 public void onStart() { 60 mBluetoothDeviceUpdater.registerCallback(); 61 mConnectedUsbDeviceUpdater.registerCallback(); 62 mConnectedDockUpdater.registerCallback(); 63 } 64 65 @Override onStop()66 public void onStop() { 67 mConnectedUsbDeviceUpdater.unregisterCallback(); 68 mBluetoothDeviceUpdater.unregisterCallback(); 69 mConnectedDockUpdater.unregisterCallback(); 70 } 71 72 @Override displayPreference(PreferenceScreen screen)73 public void displayPreference(PreferenceScreen screen) { 74 super.displayPreference(screen); 75 if (isAvailable()) { 76 mPreferenceGroup = (PreferenceGroup) screen.findPreference(KEY); 77 mPreferenceGroup.setVisible(false); 78 79 mBluetoothDeviceUpdater.setPrefContext(screen.getContext()); 80 mBluetoothDeviceUpdater.forceUpdate(); 81 mConnectedUsbDeviceUpdater.initUsbPreference(screen.getContext()); 82 mConnectedDockUpdater.forceUpdate(); 83 } 84 } 85 86 @Override getAvailabilityStatus()87 public int getAvailabilityStatus() { 88 return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH) 89 ? AVAILABLE 90 : UNSUPPORTED_ON_DEVICE; 91 } 92 93 @Override getPreferenceKey()94 public String getPreferenceKey() { 95 return KEY; 96 } 97 98 @Override onDeviceAdded(Preference preference)99 public void onDeviceAdded(Preference preference) { 100 if (mPreferenceGroup.getPreferenceCount() == 0) { 101 mPreferenceGroup.setVisible(true); 102 } 103 mPreferenceGroup.addPreference(preference); 104 } 105 106 @Override onDeviceRemoved(Preference preference)107 public void onDeviceRemoved(Preference preference) { 108 mPreferenceGroup.removePreference(preference); 109 if (mPreferenceGroup.getPreferenceCount() == 0) { 110 mPreferenceGroup.setVisible(false); 111 } 112 } 113 114 @VisibleForTesting init(BluetoothDeviceUpdater bluetoothDeviceUpdater, ConnectedUsbDeviceUpdater connectedUsbDeviceUpdater, DockUpdater connectedDockUpdater)115 public void init(BluetoothDeviceUpdater bluetoothDeviceUpdater, 116 ConnectedUsbDeviceUpdater connectedUsbDeviceUpdater, 117 DockUpdater connectedDockUpdater) { 118 119 mBluetoothDeviceUpdater = bluetoothDeviceUpdater; 120 mConnectedUsbDeviceUpdater = connectedUsbDeviceUpdater; 121 mConnectedDockUpdater = connectedDockUpdater; 122 } 123 init(DashboardFragment fragment)124 public void init(DashboardFragment fragment) { 125 final Context context = fragment.getContext(); 126 DockUpdaterFeatureProvider dockUpdaterFeatureProvider = 127 FeatureFactory.getFactory(context).getDockUpdaterFeatureProvider(); 128 final DockUpdater connectedDockUpdater = 129 dockUpdaterFeatureProvider.getConnectedDockUpdater(context, this); 130 init(new ConnectedBluetoothDeviceUpdater(context, fragment, this), 131 new ConnectedUsbDeviceUpdater(context, fragment, this), 132 connectedDockUpdater); 133 } 134 } 135