content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.weex.base;
  
  import android.os.Handler;
  import android.os.Message;
  import android.util.Log;
  
  import java.io.Serializable;
  import java.lang.reflect.Method;
  
  
  public class SystemMessageHandler extends Handler implements Serializable {
  
      private static final String TAG = "SystemMessageHandler";
  
      private static final int SCHEDULED_WORK = 1;
  
      private long mMessagePumpDelegateNative = 0;
  
      private Method mMessageMethodSetAsynchronous;
  
      private native void nativeRunWork(long delegateNative);
  
      private SystemMessageHandler(long messagePumpDelegateNative) {
          this.mMessagePumpDelegateNative = messagePumpDelegateNative;
          try {
              Class<?> messageClass = Class.forName("android.os.Message");
              mMessageMethodSetAsynchronous = messageClass.getMethod(
                      "setAsynchronous", new Class[]{boolean.class});
          } catch (ClassNotFoundException e) {
              Log.e(TAG, "Failed to find android.os.Message class:" + e);
          } catch (NoSuchMethodException e) {
              Log.e(TAG, "Failed to load Message.setAsynchronous method:" + e);
          } catch (RuntimeException e) {
              Log.e(TAG, "Exception while loading Message.setAsynchronous method: " + e);
          }
      }
  
      @CalledByNative
      public static SystemMessageHandler create(long messagePumpDelegateNative) {
          return new SystemMessageHandler(messagePumpDelegateNative);
      }
  
      @CalledByNative
      private void scheduleWork() {
          sendMessage(obtainAsyncMessage(SCHEDULED_WORK));
      }
  
      @CalledByNative
      private void scheduleDelayedWork(long delayMillis) {
          sendMessageDelayed(obtainAsyncMessage(SCHEDULED_WORK), delayMillis);
      }
  
      @CalledByNative
      private void stop() {
          removeMessages(SCHEDULED_WORK);
      }
  
      private Message obtainAsyncMessage(int what) {
          Message msg = Message.obtain();
          msg.what = what;
  //        if (mMessageMethodSetAsynchronous != null) {
  //            // If invocation fails, assume this is indicative of future
  //            // failures, and avoid log spam by nulling the reflected method.
  //            try {
  //                mMessageMethodSetAsynchronous.invoke(msg, true);
  //            } catch (IllegalAccessException e) {
  //                Log.e(TAG, "Illegal access to asynchronous message creation, disabling.");
  //                mMessageMethodSetAsynchronous = null;
  //            } catch (IllegalArgumentException e) {
  //                Log.e(TAG, "Illegal argument for asynchronous message creation, disabling.");
  //                mMessageMethodSetAsynchronous = null;
  //            } catch (InvocationTargetException e) {
  //                Log.e(TAG, "Invocation exception during asynchronous message creation, disabling.");
  //                mMessageMethodSetAsynchronous = null;
  //            } catch (RuntimeException e) {
  //                Log.e(TAG, "Runtime exception during asynchronous message creation, disabling.");
  //                mMessageMethodSetAsynchronous = null;
  //            }
  //        }
          return msg;
      }
  
      @Override
      public void handleMessage(Message msg) {
          nativeRunWork(mMessagePumpDelegateNative);
      }
  }
  