1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_RENDERER_JAVA_JAVA_BRIDGE_DISPATCHER_H_ 6 #define CONTENT_RENDERER_JAVA_JAVA_BRIDGE_DISPATCHER_H_ 7 8 #include <map> 9 10 #include "base/memory/ref_counted.h" 11 #include "content/public/renderer/render_view_observer.h" 12 #include "ipc/ipc_channel_handle.h" 13 #include "third_party/npapi/bindings/npruntime.h" 14 15 namespace content { 16 class JavaBridgeChannel; 17 struct NPVariant_Param; 18 19 // This class handles injecting Java objects into the main frame of a 20 // RenderView. The 'add' and 'remove' messages received from the browser 21 // process modify the entries in a map of 'pending' objects. These objects are 22 // bound to the window object of the main frame when that window object is next 23 // cleared. These objects remain bound until the window object is cleared 24 // again. 25 class JavaBridgeDispatcher : public RenderViewObserver { 26 public: 27 JavaBridgeDispatcher(RenderView* render_view); 28 virtual ~JavaBridgeDispatcher(); 29 30 private: 31 // RenderViewObserver override: 32 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 33 virtual void DidClearWindowObject(WebKit::WebFrame* frame) OVERRIDE; 34 35 // Message handlers 36 void OnAddNamedObject(const string16& name, 37 const NPVariant_Param& variant_param); 38 void OnRemoveNamedObject(const string16& name); 39 40 void EnsureChannelIsSetUp(); 41 42 // Objects that will be bound to the window when the window object is next 43 // cleared. We hold a ref to these. 44 typedef std::map<string16, NPVariant> ObjectMap; 45 ObjectMap objects_; 46 scoped_refptr<JavaBridgeChannel> channel_; 47 }; 48 49 } // namespace content 50 51 #endif // CONTENT_RENDERER_JAVA_JAVA_BRIDGE_DISPATCHER_H_ 52
