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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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