Ugo Yu | fd8efab | 2019-10-16 20:27:23 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 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; |
| 18 | |
| 19 | import android.bluetooth.BluetoothA2dp; |
| 20 | import android.bluetooth.BluetoothAdapter; |
| 21 | import android.bluetooth.BluetoothHearingAid; |
| 22 | import android.bluetooth.BluetoothProfile; |
| 23 | import android.bluetooth.BluetoothProfile.ServiceListener; |
| 24 | import android.content.Context; |
| 25 | import android.content.res.Resources; |
| 26 | import android.database.ContentObserver; |
| 27 | import android.os.Handler; |
| 28 | import android.os.Looper; |
| 29 | import android.os.Message; |
| 30 | import android.provider.Settings; |
| 31 | import android.util.Log; |
| 32 | import android.widget.Toast; |
| 33 | |
| 34 | import com.android.internal.R; |
| 35 | import com.android.internal.annotations.VisibleForTesting; |
| 36 | |
| 37 | /** |
| 38 | * The BluetoothAirplaneModeListener handles system airplane mode change callback and checks |
| 39 | * whether we need to inform BluetoothManagerService on this change. |
| 40 | * |
| 41 | * The information of airplane mode turns on would not be passed to the BluetoothManagerService |
| 42 | * when Bluetooth is on and Bluetooth is in one of the following situations: |
| 43 | * 1. Bluetooth A2DP is connected. |
| 44 | * 2. Bluetooth Hearing Aid profile is connected. |
| 45 | */ |
| 46 | class BluetoothAirplaneModeListener { |
| 47 | private static final String TAG = "BluetoothAirplaneModeListener"; |
| 48 | @VisibleForTesting static final String TOAST_COUNT = "bluetooth_airplane_toast_count"; |
| 49 | |
| 50 | private static final int MSG_AIRPLANE_MODE_CHANGED = 0; |
| 51 | |
| 52 | @VisibleForTesting static final int MAX_TOAST_COUNT = 10; // 10 times |
| 53 | |
| 54 | private final BluetoothManagerService mBluetoothManager; |
| 55 | private final BluetoothAirplaneModeHandler mHandler; |
| 56 | private AirplaneModeHelper mAirplaneHelper; |
| 57 | |
| 58 | @VisibleForTesting int mToastCount = 0; |
| 59 | |
| 60 | BluetoothAirplaneModeListener(BluetoothManagerService service, Looper looper, Context context) { |
| 61 | mBluetoothManager = service; |
| 62 | |
| 63 | mHandler = new BluetoothAirplaneModeHandler(looper); |
| 64 | context.getContentResolver().registerContentObserver( |
| 65 | Settings.Global.getUriFor(Settings.Global.AIRPLANE_MODE_ON), true, |
| 66 | mAirplaneModeObserver); |
| 67 | } |
| 68 | |
| 69 | private final ContentObserver mAirplaneModeObserver = new ContentObserver(null) { |
| 70 | @Override |
| 71 | public void onChange(boolean unused) { |
| 72 | // Post from system main thread to android_io thread. |
| 73 | Message msg = mHandler.obtainMessage(MSG_AIRPLANE_MODE_CHANGED); |
| 74 | mHandler.sendMessage(msg); |
| 75 | } |
| 76 | }; |
| 77 | |
| 78 | private class BluetoothAirplaneModeHandler extends Handler { |
| 79 | BluetoothAirplaneModeHandler(Looper looper) { |
| 80 | super(looper); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public void handleMessage(Message msg) { |
| 85 | switch (msg.what) { |
| 86 | case MSG_AIRPLANE_MODE_CHANGED: |
| 87 | handleAirplaneModeChange(); |
| 88 | break; |
| 89 | default: |
| 90 | Log.e(TAG, "Invalid message: " + msg.what); |
| 91 | break; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Call after boot complete |
| 98 | */ |
| 99 | @VisibleForTesting |
| 100 | void start(AirplaneModeHelper helper) { |
| 101 | Log.i(TAG, "start"); |
| 102 | mAirplaneHelper = helper; |
| 103 | mToastCount = mAirplaneHelper.getSettingsInt(TOAST_COUNT); |
| 104 | } |
| 105 | |
| 106 | @VisibleForTesting |
| 107 | boolean shouldPopToast() { |
| 108 | if (mToastCount >= MAX_TOAST_COUNT) { |
| 109 | return false; |
| 110 | } |
| 111 | mToastCount++; |
| 112 | mAirplaneHelper.setSettingsInt(TOAST_COUNT, mToastCount); |
| 113 | return true; |
| 114 | } |
| 115 | |
| 116 | @VisibleForTesting |
| 117 | void handleAirplaneModeChange() { |
| 118 | if (shouldSkipAirplaneModeChange()) { |
| 119 | Log.i(TAG, "Ignore airplane mode change"); |
| 120 | // We have to store Bluetooth state here, so if user turns off Bluetooth |
| 121 | // after airplane mode is turned on, we don't forget to turn on Bluetooth |
| 122 | // when airplane mode turns off. |
| 123 | mAirplaneHelper.setSettingsInt(Settings.Global.BLUETOOTH_ON, |
| 124 | BluetoothManagerService.BLUETOOTH_ON_AIRPLANE); |
| 125 | if (shouldPopToast()) { |
| 126 | mAirplaneHelper.showToastMessage(); |
| 127 | } |
| 128 | return; |
| 129 | } |
| 130 | mAirplaneHelper.onAirplaneModeChanged(mBluetoothManager); |
| 131 | } |
| 132 | |
| 133 | @VisibleForTesting |
| 134 | boolean shouldSkipAirplaneModeChange() { |
| 135 | if (mAirplaneHelper == null) { |
| 136 | return false; |
| 137 | } |
| 138 | if (!mAirplaneHelper.isBluetoothOn() || !mAirplaneHelper.isAirplaneModeOn() |
| 139 | || !mAirplaneHelper.isA2dpOrHearingAidConnected()) { |
| 140 | return false; |
| 141 | } |
| 142 | return true; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Helper class that handles callout and callback methods without |
| 147 | * complex logic. |
| 148 | */ |
| 149 | @VisibleForTesting |
| 150 | public static class AirplaneModeHelper { |
| 151 | private volatile BluetoothA2dp mA2dp; |
| 152 | private volatile BluetoothHearingAid mHearingAid; |
| 153 | private final BluetoothAdapter mAdapter; |
| 154 | private final Context mContext; |
| 155 | |
| 156 | AirplaneModeHelper(Context context) { |
| 157 | mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| 158 | mContext = context; |
| 159 | |
| 160 | mAdapter.getProfileProxy(mContext, mProfileServiceListener, BluetoothProfile.A2DP); |
| 161 | mAdapter.getProfileProxy(mContext, mProfileServiceListener, |
| 162 | BluetoothProfile.HEARING_AID); |
| 163 | } |
| 164 | |
| 165 | private final ServiceListener mProfileServiceListener = new ServiceListener() { |
| 166 | @Override |
| 167 | public void onServiceConnected(int profile, BluetoothProfile proxy) { |
| 168 | // Setup Bluetooth profile proxies |
| 169 | switch (profile) { |
| 170 | case BluetoothProfile.A2DP: |
| 171 | mA2dp = (BluetoothA2dp) proxy; |
| 172 | break; |
| 173 | case BluetoothProfile.HEARING_AID: |
| 174 | mHearingAid = (BluetoothHearingAid) proxy; |
| 175 | break; |
| 176 | default: |
| 177 | break; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public void onServiceDisconnected(int profile) { |
| 183 | // Clear Bluetooth profile proxies |
| 184 | switch (profile) { |
| 185 | case BluetoothProfile.A2DP: |
| 186 | mA2dp = null; |
| 187 | break; |
| 188 | case BluetoothProfile.HEARING_AID: |
| 189 | mHearingAid = null; |
| 190 | break; |
| 191 | default: |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | }; |
| 196 | |
| 197 | @VisibleForTesting |
| 198 | public boolean isA2dpOrHearingAidConnected() { |
| 199 | return isA2dpConnected() || isHearingAidConnected(); |
| 200 | } |
| 201 | |
| 202 | @VisibleForTesting |
| 203 | public boolean isBluetoothOn() { |
| 204 | final BluetoothAdapter adapter = mAdapter; |
| 205 | if (adapter == null) { |
| 206 | return false; |
| 207 | } |
| 208 | return adapter.getLeState() == BluetoothAdapter.STATE_ON; |
| 209 | } |
| 210 | |
| 211 | @VisibleForTesting |
| 212 | public boolean isAirplaneModeOn() { |
| 213 | return Settings.Global.getInt(mContext.getContentResolver(), |
| 214 | Settings.Global.AIRPLANE_MODE_ON, 0) == 1; |
| 215 | } |
| 216 | |
| 217 | @VisibleForTesting |
| 218 | public void onAirplaneModeChanged(BluetoothManagerService managerService) { |
| 219 | managerService.onAirplaneModeChanged(); |
| 220 | } |
| 221 | |
| 222 | @VisibleForTesting |
| 223 | public int getSettingsInt(String name) { |
| 224 | return Settings.Global.getInt(mContext.getContentResolver(), |
| 225 | name, 0); |
| 226 | } |
| 227 | |
| 228 | @VisibleForTesting |
| 229 | public void setSettingsInt(String name, int value) { |
| 230 | Settings.Global.putInt(mContext.getContentResolver(), |
| 231 | name, value); |
| 232 | } |
| 233 | |
| 234 | @VisibleForTesting |
| 235 | public void showToastMessage() { |
| 236 | Resources r = mContext.getResources(); |
| 237 | final CharSequence text = r.getString( |
| 238 | R.string.bluetooth_airplane_mode_toast, 0); |
| 239 | Toast.makeText(mContext, text, Toast.LENGTH_LONG).show(); |
| 240 | } |
| 241 | |
| 242 | private boolean isA2dpConnected() { |
| 243 | final BluetoothA2dp a2dp = mA2dp; |
| 244 | if (a2dp == null) { |
| 245 | return false; |
| 246 | } |
| 247 | return a2dp.getConnectedDevices().size() > 0; |
| 248 | } |
| 249 | |
| 250 | private boolean isHearingAidConnected() { |
| 251 | final BluetoothHearingAid hearingAid = mHearingAid; |
| 252 | if (hearingAid == null) { |
| 253 | return false; |
| 254 | } |
| 255 | return hearingAid.getConnectedDevices().size() > 0; |
| 256 | } |
| 257 | }; |
| 258 | } |