1 /* 2 * Copyright (C) 2008 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.internal.os; 18 19 import android.content.Context; 20 import android.os.Handler; 21 import android.os.Looper; 22 import android.os.Message; 23 24 public class HandlerCaller { 25 final Looper mMainLooper; 26 final Handler mH; 27 28 final Callback mCallback; 29 30 class MyHandler extends Handler { 31 MyHandler(Looper looper, boolean async) { 32 super(looper, null, async); 33 } 34 35 @Override 36 public void handleMessage(Message msg) { 37 mCallback.executeMessage(msg); 38 } 39 } 40 41 public interface Callback { 42 public void executeMessage(Message msg); 43 } 44 45 public HandlerCaller(Context context, Looper looper, Callback callback, 46 boolean asyncHandler) { 47 mMainLooper = looper != null ? looper : context.getMainLooper(); 48 mH = new MyHandler(mMainLooper, asyncHandler); 49 mCallback = callback; 50 } 51 52 public void executeOrSendMessage(Message msg) { 53 // If we are calling this from the main thread, then we can call 54 // right through. Otherwise, we need to send the message to the 55 // main thread. 56 if (Looper.myLooper() == mMainLooper) { 57 mCallback.executeMessage(msg); 58 msg.recycle(); 59 return; 60 } 61 62 mH.sendMessage(msg); 63 } 64 65 public void sendMessageDelayed(Message msg, long delayMillis) { 66 mH.sendMessageDelayed(msg, delayMillis); 67 } 68 69 public boolean hasMessages(int what) { 70 return mH.hasMessages(what); 71 } 72 73 public void removeMessages(int what) { 74 mH.removeMessages(what); 75 } 76 77 public void removeMessages(int what, Object obj) { 78 mH.removeMessages(what, obj); 79 } 80 81 public void sendMessage(Message msg) { 82 mH.sendMessage(msg); 83 } 84 85 public SomeArgs sendMessageAndWait(Message msg) { 86 if (Looper.myLooper() == mH.getLooper()) { 87 throw new IllegalStateException("Can't wait on same thread as looper"); 88 } 89 SomeArgs args = (SomeArgs)msg.obj; 90 args.mWaitState = SomeArgs.WAIT_WAITING; 91 mH.sendMessage(msg); 92 synchronized (args) { 93 while (args.mWaitState == SomeArgs.WAIT_WAITING) { 94 try { 95 args.wait(); 96 } catch (InterruptedException e) { 97 return null; 98 } 99 } 100 } 101 args.mWaitState = SomeArgs.WAIT_NONE; 102 return args; 103 } 104 105 public Message obtainMessage(int what) { 106 return mH.obtainMessage(what); 107 } 108 109 public Message obtainMessageBO(int what, boolean arg1, Object arg2) { 110 return mH.obtainMessage(what, arg1 ? 1 : 0, 0, arg2); 111 } 112 113 public Message obtainMessageBOO(int what, boolean arg1, Object arg2, Object arg3) { 114 SomeArgs args = SomeArgs.obtain(); 115 args.arg1 = arg2; 116 args.arg2 = arg3; 117 return mH.obtainMessage(what, arg1 ? 1 : 0, 0, args); 118 } 119 120 public Message obtainMessageO(int what, Object arg1) { 121 return mH.obtainMessage(what, 0, 0, arg1); 122 } 123 124 public Message obtainMessageI(int what, int arg1) { 125 return mH.obtainMessage(what, arg1, 0); 126 } 127 128 public Message obtainMessageII(int what, int arg1, int arg2) { 129 return mH.obtainMessage(what, arg1, arg2); 130 } 131 132 public Message obtainMessageIO(int what, int arg1, Object arg2) { 133 return mH.obtainMessage(what, arg1, 0, arg2); 134 } 135 136 public Message obtainMessageIIO(int what, int arg1, int arg2, Object arg3) { 137 return mH.obtainMessage(what, arg1, arg2, arg3); 138 } 139 140 public Message obtainMessageIIOO(int what, int arg1, int arg2, 141 Object arg3, Object arg4) { 142 SomeArgs args = SomeArgs.obtain(); 143 args.arg1 = arg3; 144 args.arg2 = arg4; 145 return mH.obtainMessage(what, arg1, arg2, args); 146 } 147 148 public Message obtainMessageIOO(int what, int arg1, Object arg2, Object arg3) { 149 SomeArgs args = SomeArgs.obtain(); 150 args.arg1 = arg2; 151 args.arg2 = arg3; 152 return mH.obtainMessage(what, arg1, 0, args); 153 } 154 155 public Message obtainMessageIOOO(int what, int arg1, Object arg2, Object arg3, Object arg4) { 156 SomeArgs args = SomeArgs.obtain(); 157 args.arg1 = arg2; 158 args.arg2 = arg3; 159 args.arg3 = arg4; 160 return mH.obtainMessage(what, arg1, 0, args); 161 } 162 163 public Message obtainMessageOO(int what, Object arg1, Object arg2) { 164 SomeArgs args = SomeArgs.obtain(); 165 args.arg1 = arg1; 166 args.arg2 = arg2; 167 return mH.obtainMessage(what, 0, 0, args); 168 } 169 170 public Message obtainMessageOOO(int what, Object arg1, Object arg2, Object arg3) { 171 SomeArgs args = SomeArgs.obtain(); 172 args.arg1 = arg1; 173 args.arg2 = arg2; 174 args.arg3 = arg3; 175 return mH.obtainMessage(what, 0, 0, args); 176 } 177 178 public Message obtainMessageOOOO(int what, Object arg1, Object arg2, 179 Object arg3, Object arg4) { 180 SomeArgs args = SomeArgs.obtain(); 181 args.arg1 = arg1; 182 args.arg2 = arg2; 183 args.arg3 = arg3; 184 args.arg4 = arg4; 185 return mH.obtainMessage(what, 0, 0, args); 186 } 187 188 public Message obtainMessageOOOOO(int what, Object arg1, Object arg2, 189 Object arg3, Object arg4, Object arg5) { 190 SomeArgs args = SomeArgs.obtain(); 191 args.arg1 = arg1; 192 args.arg2 = arg2; 193 args.arg3 = arg3; 194 args.arg4 = arg4; 195 args.arg5 = arg5; 196 return mH.obtainMessage(what, 0, 0, args); 197 } 198 199 public Message obtainMessageIIII(int what, int arg1, int arg2, 200 int arg3, int arg4) { 201 SomeArgs args = SomeArgs.obtain(); 202 args.argi1 = arg1; 203 args.argi2 = arg2; 204 args.argi3 = arg3; 205 args.argi4 = arg4; 206 return mH.obtainMessage(what, 0, 0, args); 207 } 208 209 public Message obtainMessageIIIIII(int what, int arg1, int arg2, 210 int arg3, int arg4, int arg5, int arg6) { 211 SomeArgs args = SomeArgs.obtain(); 212 args.argi1 = arg1; 213 args.argi2 = arg2; 214 args.argi3 = arg3; 215 args.argi4 = arg4; 216 args.argi5 = arg5; 217 args.argi6 = arg6; 218 return mH.obtainMessage(what, 0, 0, args); 219 } 220 221 public Message obtainMessageIIIIO(int what, int arg1, int arg2, 222 int arg3, int arg4, Object arg5) { 223 SomeArgs args = SomeArgs.obtain(); 224 args.arg1 = arg5; 225 args.argi1 = arg1; 226 args.argi2 = arg2; 227 args.argi3 = arg3; 228 args.argi4 = arg4; 229 return mH.obtainMessage(what, 0, 0, args); 230 } 231 } 232
