Post a Message from Java to JS

android_webview/renderer/aw_message_port_client.cc

 // Copyright 2015 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.
 
 #include "android_webview/renderer/aw_message_port_client.h"
 
 #include "android_webview/common/aw_message_port_messages.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/v8_value_converter.h"
@@ skipping 14 matching lines @@
     : content::RenderFrameObserver(render_frame) {
 }
 
 AwMessagePortClient::~AwMessagePortClient() {
 }
 
 bool AwMessagePortClient::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AwMessagePortClient, message)
-    IPC_MESSAGE_HANDLER(AwMessagePortMsg_Message, OnPostMessage)
+    IPC_MESSAGE_HANDLER(AwMessagePortMsg_WebToAppMessage, OnWebToAppMessage)
+    IPC_MESSAGE_HANDLER(AwMessagePortMsg_AppToWebMessage, OnAppToWebMessage)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
-void AwMessagePortClient::OnPostMessage(
+void AwMessagePortClient::OnWebToAppMessage(
     int message_port_id,
     const base::string16& message,
     const vector<int>& sent_message_port_ids) {
   v8::HandleScope handle_scope(blink::mainThreadIsolate());
   blink::WebFrame* main_frame =
       render_frame()->GetRenderView()->GetWebView()->mainFrame();
   if (main_frame == nullptr) {
     return;
   }
   v8::Local<v8::Context> context = main_frame->mainWorldScriptContext();
   v8::Context::Scope context_scope(context);
   DCHECK(!context.IsEmpty());
   WebSerializedScriptValue v = WebSerializedScriptValue::fromString(message);
   v8::Handle<v8::Value> v8value = v.deserialize();
 
   scoped_ptr<V8ValueConverter> converter;
   converter.reset(V8ValueConverter::create());
   converter->SetDateAllowed(true);
   converter->SetRegExpAllowed(true);
   base::ListValue result;
   result.Append(converter->FromV8Value(v8value, context));
-  Send(new AwMessagePortHostMsg_ConvertedMessage(render_frame()->GetRoutingID(),
-                                                 message_port_id,
-                                                 result,
-                                                 sent_message_port_ids));
+  Send(new AwMessagePortHostMsg_ConvertedWebToAppMessage(
+      render_frame()->GetRoutingID(), message_port_id,
+      result, sent_message_port_ids));
+}
+
+void AwMessagePortClient::OnAppToWebMessage(
+    int message_port_id,
+    const base::string16& message,
+    const vector<int>& sent_message_port_ids) {
+  v8::HandleScope handle_scope(blink::mainThreadIsolate());
+  blink::WebFrame* main_frame =
+      render_frame()->GetRenderView()->GetWebView()->mainFrame();
+  if (main_frame == nullptr) {
+    return;
+  }
+  v8::Local<v8::Context> context = main_frame->mainWorldScriptContext();
+  v8::Context::Scope context_scope(context);
+  DCHECK(!context.IsEmpty());
+  scoped_ptr<V8ValueConverter> converter;
+  converter.reset(V8ValueConverter::create());
+  converter->SetDateAllowed(true);
+  converter->SetRegExpAllowed(true);
+  scoped_ptr<base::Value> value(new base::StringValue(message));
+  v8::Handle<v8::Value> result_value = converter->ToV8Value(value.get(),
+                                                           context);
+  WebSerializedScriptValue serialized_script_value =
+      WebSerializedScriptValue::serialize(result_value);
+  base::string16 result = serialized_script_value.toString();
+  Send(new AwMessagePortHostMsg_ConvertedAppToWebMessage(
+      render_frame()->GetRoutingID(), message_port_id,
+      result, sent_message_port_ids));
 }
 
 }