Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 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 | |
| 17 | package com.android.server.telecom; |
| 18 | |
| 19 | import android.content.BroadcastReceiver; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.content.IntentFilter; |
Brad Ebinger | a3eccfe | 2016-10-05 15:45:22 -0700 | [diff] [blame] | 23 | import android.telecom.Log; |
Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 24 | |
Hall Liu | f62630a | 2015-10-27 14:53:39 -0700 | [diff] [blame] | 25 | import com.android.internal.annotations.VisibleForTesting; |
Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 26 | import com.android.internal.util.IndentingPrintWriter; |
| 27 | |
| 28 | import java.util.Collections; |
| 29 | import java.util.Set; |
| 30 | import java.util.concurrent.ConcurrentHashMap; |
| 31 | |
| 32 | /** Listens for and caches car dock state. */ |
Hall Liu | f62630a | 2015-10-27 14:53:39 -0700 | [diff] [blame] | 33 | @VisibleForTesting |
| 34 | public class DockManager { |
| 35 | @VisibleForTesting |
| 36 | public interface Listener { |
Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 37 | void onDockChanged(boolean isDocked); |
| 38 | } |
| 39 | |
| 40 | /** Receiver for car dock plugged and unplugged events. */ |
| 41 | private class DockBroadcastReceiver extends BroadcastReceiver { |
| 42 | @Override |
| 43 | public void onReceive(Context context, Intent intent) { |
Brad Ebinger | 58f3658 | 2016-01-21 14:20:07 -0800 | [diff] [blame] | 44 | Log.startSession("DM.oR"); |
| 45 | try { |
| 46 | if (Intent.ACTION_DOCK_EVENT.equals(intent.getAction())) { |
| 47 | int dockState = intent.getIntExtra( |
| 48 | Intent.EXTRA_DOCK_STATE, Intent.EXTRA_DOCK_STATE_UNDOCKED); |
| 49 | onDockChanged(dockState); |
| 50 | } |
| 51 | } finally { |
| 52 | Log.endSession(); |
Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | private final DockBroadcastReceiver mReceiver; |
| 58 | |
| 59 | /** |
| 60 | * ConcurrentHashMap constructor params: 8 is initial table size, 0.9f is |
| 61 | * load factor before resizing, 1 means we only expect a single thread to |
| 62 | * access the map so make only a single shard |
| 63 | */ |
| 64 | private final Set<Listener> mListeners = Collections.newSetFromMap( |
| 65 | new ConcurrentHashMap<Listener, Boolean>(8, 0.9f, 1)); |
| 66 | |
| 67 | private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; |
| 68 | |
| 69 | DockManager(Context context) { |
| 70 | mReceiver = new DockBroadcastReceiver(); |
| 71 | |
| 72 | // Register for misc other intent broadcasts. |
| 73 | IntentFilter intentFilter = new IntentFilter(Intent.ACTION_DOCK_EVENT); |
| 74 | context.registerReceiver(mReceiver, intentFilter); |
| 75 | } |
| 76 | |
Hall Liu | f62630a | 2015-10-27 14:53:39 -0700 | [diff] [blame] | 77 | @VisibleForTesting |
| 78 | public void addListener(Listener listener) { |
Santos Cordon | a04bdca | 2015-03-04 16:57:55 -0800 | [diff] [blame] | 79 | mListeners.add(listener); |
| 80 | } |
| 81 | |
| 82 | void removeListener(Listener listener) { |
| 83 | if (listener != null) { |
| 84 | mListeners.remove(listener); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | boolean isDocked() { |
| 89 | switch (mDockState) { |
| 90 | case Intent.EXTRA_DOCK_STATE_DESK: |
| 91 | case Intent.EXTRA_DOCK_STATE_HE_DESK: |
| 92 | case Intent.EXTRA_DOCK_STATE_LE_DESK: |
| 93 | case Intent.EXTRA_DOCK_STATE_CAR: |
| 94 | return true; |
| 95 | default: |
| 96 | return false; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | private void onDockChanged(int dockState) { |
| 101 | if (mDockState != dockState) { |
| 102 | Log.v(this, "onDockChanged: is docked?%b", dockState == Intent.EXTRA_DOCK_STATE_CAR); |
| 103 | mDockState = dockState; |
| 104 | for (Listener listener : mListeners) { |
| 105 | listener.onDockChanged(isDocked()); |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Dumps the state of the {@link DockManager}. |
| 112 | * |
| 113 | * @param pw The {@code IndentingPrintWriter} to write the state to. |
| 114 | */ |
| 115 | public void dump(IndentingPrintWriter pw) { |
| 116 | pw.println("mIsDocked: " + isDocked()); |
| 117 | } |
| 118 | } |