Post a Message from Java to JS

android_webview/java/src/org/chromium/android_webview/AwContents.java

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.android_webview;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
@@ skipping 1772 matching lines @@
      *
      * @param frameName The name of the frame. If the name is null the message is posted
      *                  to the main frame.
      * @param message   The message
      * @param sourceOrigin  The source origin
      * @param targetOrigin  The target origin
      * @param msgPorts The sent message ports, if any. Pass null if there is no
      *                 message ports to pass.
      */
     public void postMessageToFrame(String frameName, String message,
-            String sourceOrigin, String targetOrigin, MessagePort[] msgPorts) {
+            String sourceOrigin, String targetOrigin, MessagePort[] sentPorts) {
         if (isDestroyed()) return;
         int[] portIds = null;
-        if (msgPorts != null) {
-            portIds = new int[msgPorts.length];
-            for (int i = 0; i < msgPorts.length; i++)
-                portIds[i] = msgPorts[i].portId();
+        if (sentPorts != null) {
+            portIds = new int[sentPorts.length];
+            for (int i = 0; i < sentPorts.length; i++) {
+                portIds[i] = sentPorts[i].portId();
+            }
+            mBrowserContext.getMessagePortService().removeSentPorts(portIds);
         }
         nativePostMessageToFrame(mNativeAwContents, frameName, message, sourceOrigin,
                 targetOrigin, portIds);
     }
 
     /**
      * Creates a message channel.
      *
      * @param callback The message channel created.
      */
     public void createMessageChannel(ValueCallback<MessageChannel> callback) {
         if (isDestroyed()) return;
         // Make sure the message port service is created.
-        mBrowserContext.createMessagePortService();
+        mBrowserContext.createMessagePortServiceIfNecessary();
         nativeCreateMessageChannel(mNativeAwContents, callback);
     }
 
     //--------------------------------------------------------------------------------------------
     //  View and ViewGroup method implementations
     //--------------------------------------------------------------------------------------------
 
     /**
      * @see android.webkit.View#onTouchEvent()
      */
@@ skipping 882 matching lines @@
 
     private native void nativePreauthorizePermission(long nativeAwContents, String origin,
             long resources);
 
     private native void nativePostMessageToFrame(long nativeAwContents, String frameId,
             String message, String sourceOrigin, String targetOrigin, int[] msgPorts);
 
     private native void nativeCreateMessageChannel(long nativeAwContents,
             ValueCallback<MessageChannel> callback);
 }