Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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.content.BroadcastReceiver; |
| 20 | import android.content.Context; |
| 21 | import android.content.ContextWrapper; |
| 22 | import android.content.Intent; |
| 23 | import android.content.IntentFilter; |
Dianne Hackborn | e0e413e | 2015-12-09 17:22:26 -0800 | [diff] [blame] | 24 | import android.os.Bundle; |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 25 | import android.os.Handler; |
Jeff Sharkey | 3671b1e | 2013-01-31 17:22:26 -0800 | [diff] [blame] | 26 | import android.os.UserHandle; |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 27 | |
| 28 | import com.google.common.collect.Lists; |
| 29 | import com.google.common.util.concurrent.AbstractFuture; |
| 30 | |
| 31 | import java.util.Iterator; |
| 32 | import java.util.List; |
Jeff Sharkey | b5d55e3 | 2011-08-10 17:53:27 -0700 | [diff] [blame] | 33 | import java.util.concurrent.ExecutionException; |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 34 | import java.util.concurrent.Future; |
Jeff Sharkey | b5d55e3 | 2011-08-10 17:53:27 -0700 | [diff] [blame] | 35 | import java.util.concurrent.TimeUnit; |
| 36 | import java.util.concurrent.TimeoutException; |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 37 | |
| 38 | /** |
| 39 | * {@link ContextWrapper} that can attach listeners for upcoming |
| 40 | * {@link Context#sendBroadcast(Intent)}. |
| 41 | */ |
| 42 | public class BroadcastInterceptingContext extends ContextWrapper { |
| 43 | private static final String TAG = "WatchingContext"; |
| 44 | |
| 45 | private final List<BroadcastInterceptor> mInterceptors = Lists.newArrayList(); |
| 46 | |
| 47 | public class BroadcastInterceptor extends AbstractFuture<Intent> { |
| 48 | private final BroadcastReceiver mReceiver; |
| 49 | private final IntentFilter mFilter; |
| 50 | |
| 51 | public BroadcastInterceptor(BroadcastReceiver receiver, IntentFilter filter) { |
| 52 | mReceiver = receiver; |
| 53 | mFilter = filter; |
| 54 | } |
| 55 | |
| 56 | public boolean dispatchBroadcast(Intent intent) { |
| 57 | if (mFilter.match(getContentResolver(), intent, false, TAG) > 0) { |
| 58 | if (mReceiver != null) { |
| 59 | final Context context = BroadcastInterceptingContext.this; |
| 60 | mReceiver.onReceive(context, intent); |
| 61 | return false; |
| 62 | } else { |
| 63 | set(intent); |
| 64 | return true; |
| 65 | } |
| 66 | } else { |
| 67 | return false; |
| 68 | } |
| 69 | } |
Jeff Sharkey | b5d55e3 | 2011-08-10 17:53:27 -0700 | [diff] [blame] | 70 | |
| 71 | @Override |
| 72 | public Intent get() throws InterruptedException, ExecutionException { |
| 73 | try { |
| 74 | return get(5, TimeUnit.SECONDS); |
| 75 | } catch (TimeoutException e) { |
| 76 | throw new RuntimeException(e); |
| 77 | } |
| 78 | } |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | public BroadcastInterceptingContext(Context base) { |
| 82 | super(base); |
| 83 | } |
| 84 | |
| 85 | public Future<Intent> nextBroadcastIntent(String action) { |
| 86 | return nextBroadcastIntent(new IntentFilter(action)); |
| 87 | } |
| 88 | |
| 89 | public Future<Intent> nextBroadcastIntent(IntentFilter filter) { |
| 90 | final BroadcastInterceptor interceptor = new BroadcastInterceptor(null, filter); |
| 91 | synchronized (mInterceptors) { |
| 92 | mInterceptors.add(interceptor); |
| 93 | } |
| 94 | return interceptor; |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter) { |
| 99 | synchronized (mInterceptors) { |
| 100 | mInterceptors.add(new BroadcastInterceptor(receiver, filter)); |
| 101 | } |
| 102 | return null; |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter, |
| 107 | String broadcastPermission, Handler scheduler) { |
| 108 | return registerReceiver(receiver, filter); |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public void unregisterReceiver(BroadcastReceiver receiver) { |
| 113 | synchronized (mInterceptors) { |
| 114 | final Iterator<BroadcastInterceptor> i = mInterceptors.iterator(); |
| 115 | while (i.hasNext()) { |
| 116 | final BroadcastInterceptor interceptor = i.next(); |
| 117 | if (receiver.equals(interceptor.mReceiver)) { |
| 118 | i.remove(); |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void sendBroadcast(Intent intent) { |
| 126 | synchronized (mInterceptors) { |
| 127 | final Iterator<BroadcastInterceptor> i = mInterceptors.iterator(); |
| 128 | while (i.hasNext()) { |
| 129 | final BroadcastInterceptor interceptor = i.next(); |
| 130 | if (interceptor.dispatchBroadcast(intent)) { |
| 131 | i.remove(); |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | @Override |
Jeff Sharkey | 3671b1e | 2013-01-31 17:22:26 -0800 | [diff] [blame] | 138 | public void sendBroadcast(Intent intent, String receiverPermission) { |
| 139 | sendBroadcast(intent); |
| 140 | } |
| 141 | |
| 142 | @Override |
Fyodor Kupolov | d4fd8c7 | 2015-07-13 19:19:25 -0700 | [diff] [blame] | 143 | public void sendBroadcastMultiplePermissions(Intent intent, String[] receiverPermissions) { |
| 144 | sendBroadcast(intent); |
| 145 | } |
| 146 | |
| 147 | @Override |
Jeff Sharkey | 3671b1e | 2013-01-31 17:22:26 -0800 | [diff] [blame] | 148 | public void sendBroadcastAsUser(Intent intent, UserHandle user) { |
| 149 | sendBroadcast(intent); |
| 150 | } |
| 151 | |
| 152 | @Override |
| 153 | public void sendBroadcastAsUser(Intent intent, UserHandle user, |
| 154 | String receiverPermission) { |
| 155 | sendBroadcast(intent); |
| 156 | } |
| 157 | |
| 158 | @Override |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 159 | public void sendStickyBroadcast(Intent intent) { |
| 160 | sendBroadcast(intent); |
| 161 | } |
| 162 | |
| 163 | @Override |
Jeff Sharkey | 3671b1e | 2013-01-31 17:22:26 -0800 | [diff] [blame] | 164 | public void sendStickyBroadcastAsUser(Intent intent, UserHandle user) { |
Jeff Sharkey | b5d55e3 | 2011-08-10 17:53:27 -0700 | [diff] [blame] | 165 | sendBroadcast(intent); |
| 166 | } |
| 167 | |
| 168 | @Override |
Dianne Hackborn | e0e413e | 2015-12-09 17:22:26 -0800 | [diff] [blame] | 169 | public void sendStickyBroadcastAsUser(Intent intent, UserHandle user, Bundle options) { |
| 170 | sendBroadcast(intent); |
| 171 | } |
| 172 | |
| 173 | @Override |
Jeff Sharkey | 9599cc5 | 2011-05-22 14:59:31 -0700 | [diff] [blame] | 174 | public void removeStickyBroadcast(Intent intent) { |
| 175 | // ignored |
| 176 | } |
| 177 | } |