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      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 android.os;
     18 
     19 import com.android.layoutlib.bridge.android.BridgeContext;
     20 import com.android.layoutlib.bridge.impl.RenderAction;
     21 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
     22 
     23 import java.util.ArrayList;
     24 import java.util.HashMap;
     25 import java.util.List;
     26 import java.util.Map;
     27 
     28 /**
     29  * Delegate overriding selected methods of android.os.HandlerThread
     30  *
     31  * Through the layoutlib_create tool, selected methods of Handler have been replaced
     32  * by calls to methods of the same name in this delegate class.
     33  *
     34  *
     35  */
     36 public class HandlerThread_Delegate {
     37 
     38     private static Map<BridgeContext, List<HandlerThread>> sThreads =
     39             new HashMap<BridgeContext, List<HandlerThread>>();
     40 
     41     public static void cleanUp(BridgeContext context) {
     42         List<HandlerThread> list = sThreads.get(context);
     43         if (list != null) {
     44             for (HandlerThread thread : list) {
     45                 thread.quit();
     46             }
     47 
     48             list.clear();
     49             sThreads.remove(context);
     50         }
     51     }
     52 
     53     // -------- Delegate methods
     54 
     55     @LayoutlibDelegate
     56     /*package*/ static void run(HandlerThread theThread) {
     57         // record the thread so that it can be quit() on clean up.
     58         BridgeContext context = RenderAction.getCurrentContext();
     59         List<HandlerThread> list = sThreads.get(context);
     60         if (list == null) {
     61             list = new ArrayList<HandlerThread>();
     62             sThreads.put(context, list);
     63         }
     64 
     65         list.add(theThread);
     66 
     67         // ---- START DEFAULT IMPLEMENTATION.
     68 
     69         theThread.mTid = Process.myTid();
     70         Looper.prepare();
     71         synchronized (theThread) {
     72             theThread.mLooper = Looper.myLooper();
     73             theThread.notifyAll();
     74         }
     75         Process.setThreadPriority(theThread.mPriority);
     76         theThread.onLooperPrepared();
     77         Looper.loop();
     78         theThread.mTid = -1;
     79     }
     80 }
     81