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| 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_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_H_ | |
| 6 #define CONTENT_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 #include "base/memory/ref_counted.h" | |
| 10 #include "base/memory/weak_ptr.h" | |
| 11 #include "base/strings/string16.h" | |
| 12 #include "content/child/npapi/npobject_stub.h" | |
| 13 | |
| 14 class RouteIDGenerator; | |
| 15 struct NPObject; | |
| 16 | |
| 17 namespace IPC { | |
| 18 class Message; | |
| 19 } | |
| 20 | |
| 21 namespace content { | |
| 22 class NPChannelBase; | |
| 23 class RenderFrameHost; | |
| 24 struct NPVariant_Param; | |
| 25 | |
| 26 // This class handles injecting Java objects into a single RenderFrame. The Java | |
| 27 // object itself lives in the browser process on a background thread, while a | |
| 28 // proxy object is created in the renderer. An instance of this class exists | |
| 29 // for each RenderViewHost. | |
| 30 class JavaBridgeDispatcherHost | |
| 31 : public base::RefCountedThreadSafe<JavaBridgeDispatcherHost> { | |
| 32 public: | |
| 33 // We hold a weak pointer to the RenderFrameHost. It must outlive this object. | |
| 34 explicit JavaBridgeDispatcherHost(RenderFrameHost* render_frame_host); | |
| 35 | |
| 36 // Injects |object| into the main frame of the corresponding RenderView. A | |
| 37 // proxy object is created in the renderer and when the main frame's window | |
| 38 // object is next cleared, this proxy object is bound to the window object | |
| 39 // using |name|. The proxy object remains bound until the next time the | |
| 40 // window object is cleared after a call to RemoveNamedObject() or | |
| 41 // AddNamedObject() with the same name. The proxy object proxies calls back | |
| 42 // to |object|, which is manipulated on the background thread. This class | |
| 43 // holds a reference to |object| for the time that the proxy object is bound | |
| 44 // to the window object. | |
| 45 void AddNamedObject(const base::string16& name, NPObject* object); | |
| 46 void RemoveNamedObject(const base::string16& name); | |
| 47 | |
| 48 // Since this object is ref-counted, it might outlive render_frame_host. | |
| 49 void RenderFrameDeleted(); | |
| 50 | |
| 51 void OnGetChannelHandle(IPC::Message* reply_msg); | |
| 52 void Send(IPC::Message* msg); | |
| 53 | |
| 54 private: | |
| 55 friend class base::RefCountedThreadSafe<JavaBridgeDispatcherHost>; | |
| 56 virtual ~JavaBridgeDispatcherHost(); | |
| 57 | |
| 58 void GetChannelHandle(IPC::Message* reply_msg); | |
| 59 void CreateNPVariantParam(NPObject* object, NPVariant_Param* param); | |
| 60 void CreateObjectStub(NPObject* object, int render_process_id, int route_id); | |
| 61 | |
| 62 scoped_refptr<NPChannelBase> channel_; | |
| 63 RenderFrameHost* render_frame_host_; | |
| 64 std::vector<base::WeakPtr<NPObjectStub> > stubs_; | |
| 65 | |
| 66 DISALLOW_COPY_AND_ASSIGN(JavaBridgeDispatcherHost); | |
| 67 }; | |
| 68 | |
| 69 } // namespace content | |
| 70 | |
| 71 #endif // CONTENT_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_H_ | |
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