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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // A proxy for NPObject that sends all calls to the object to an NPObjectStub | 5 // A proxy for NPObject that sends all calls to the object to an NPObjectStub |
6 // running in a different process. | 6 // running in a different process. |
7 | 7 |
8 #ifndef CONTENT_COMMON_NPOBJECT_PROXY_H_ | 8 #ifndef CONTENT_COMMON_NPOBJECT_PROXY_H_ |
9 #define CONTENT_COMMON_NPOBJECT_PROXY_H_ | 9 #define CONTENT_COMMON_NPOBJECT_PROXY_H_ |
10 #pragma once | 10 #pragma once |
11 | 11 |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "content/common/npobject_base.h" | 13 #include "content/common/npobject_base.h" |
14 #include "googleurl/src/gurl.h" | 14 #include "googleurl/src/gurl.h" |
15 #include "ipc/ipc_channel.h" | 15 #include "ipc/ipc_listener.h" |
| 16 #include "ipc/ipc_sender.h" |
16 #include "third_party/npapi/bindings/npruntime.h" | 17 #include "third_party/npapi/bindings/npruntime.h" |
17 #include "ui/gfx/native_widget_types.h" | 18 #include "ui/gfx/native_widget_types.h" |
18 | 19 |
19 class NPChannelBase; | 20 class NPChannelBase; |
20 struct NPObject; | 21 struct NPObject; |
21 | 22 |
22 // When running a plugin in a different process from the renderer, we need to | 23 // When running a plugin in a different process from the renderer, we need to |
23 // proxy calls to NPObjects across process boundaries. This happens both ways, | 24 // proxy calls to NPObjects across process boundaries. This happens both ways, |
24 // as a plugin can get an NPObject for the window, and a page can get an | 25 // as a plugin can get an NPObject for the window, and a page can get an |
25 // NPObject for the plugin. In the process that interacts with the NPobject we | 26 // NPObject for the plugin. In the process that interacts with the NPobject we |
26 // give it an NPObjectProxy instead. All calls to it are sent across an IPC | 27 // give it an NPObjectProxy instead. All calls to it are sent across an IPC |
27 // channel (specifically, a NPChannelBase). The NPObjectStub on the other | 28 // channel (specifically, a NPChannelBase). The NPObjectStub on the other |
28 // side translates the IPC messages into calls to the actual NPObject, and | 29 // side translates the IPC messages into calls to the actual NPObject, and |
29 // returns the marshalled result. | 30 // returns the marshalled result. |
30 class NPObjectProxy : public IPC::Channel::Listener, | 31 class NPObjectProxy : public IPC::Listener, |
31 public IPC::Message::Sender, | 32 public IPC::Sender, |
32 public NPObjectBase { | 33 public NPObjectBase { |
33 public: | 34 public: |
34 virtual ~NPObjectProxy(); | 35 virtual ~NPObjectProxy(); |
35 | 36 |
36 static NPObject* Create(NPChannelBase* channel, | 37 static NPObject* Create(NPChannelBase* channel, |
37 int route_id, | 38 int route_id, |
38 gfx::NativeViewId containing_window, | 39 gfx::NativeViewId containing_window, |
39 const GURL& page_url); | 40 const GURL& page_url); |
40 | 41 |
41 // IPC::Message::Sender implementation: | 42 // IPC::Sender implementation: |
42 virtual bool Send(IPC::Message* msg) OVERRIDE; | 43 virtual bool Send(IPC::Message* msg) OVERRIDE; |
43 int route_id() { return route_id_; } | 44 int route_id() { return route_id_; } |
44 NPChannelBase* channel() { return channel_; } | 45 NPChannelBase* channel() { return channel_; } |
45 | 46 |
46 // The next 9 functions are called on NPObjects from the plugin and browser. | 47 // The next 9 functions are called on NPObjects from the plugin and browser. |
47 static bool NPHasMethod(NPObject *obj, | 48 static bool NPHasMethod(NPObject *obj, |
48 NPIdentifier name); | 49 NPIdentifier name); |
49 static bool NPInvoke(NPObject *obj, | 50 static bool NPInvoke(NPObject *obj, |
50 NPIdentifier name, | 51 NPIdentifier name, |
51 const NPVariant *args, | 52 const NPVariant *args, |
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86 const NPVariant *args, | 87 const NPVariant *args, |
87 uint32_t arg_count, | 88 uint32_t arg_count, |
88 NPVariant *result); | 89 NPVariant *result); |
89 | 90 |
90 static NPObjectProxy* GetProxy(NPObject* object); | 91 static NPObjectProxy* GetProxy(NPObject* object); |
91 static const NPClass* npclass() { return &npclass_proxy_; } | 92 static const NPClass* npclass() { return &npclass_proxy_; } |
92 | 93 |
93 // NPObjectBase implementation. | 94 // NPObjectBase implementation. |
94 virtual NPObject* GetUnderlyingNPObject() OVERRIDE; | 95 virtual NPObject* GetUnderlyingNPObject() OVERRIDE; |
95 | 96 |
96 virtual IPC::Channel::Listener* GetChannelListener() OVERRIDE; | 97 virtual IPC::Listener* GetChannelListener() OVERRIDE; |
97 | 98 |
98 private: | 99 private: |
99 NPObjectProxy(NPChannelBase* channel, | 100 NPObjectProxy(NPChannelBase* channel, |
100 int route_id, | 101 int route_id, |
101 gfx::NativeViewId containing_window, | 102 gfx::NativeViewId containing_window, |
102 const GURL& page_url); | 103 const GURL& page_url); |
103 | 104 |
104 // IPC::Channel::Listener implementation: | 105 // IPC::Listener implementation: |
105 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; | 106 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; |
106 virtual void OnChannelError() OVERRIDE; | 107 virtual void OnChannelError() OVERRIDE; |
107 | 108 |
108 static NPObject* NPAllocate(NPP, NPClass*); | 109 static NPObject* NPAllocate(NPP, NPClass*); |
109 static void NPDeallocate(NPObject* npObj); | 110 static void NPDeallocate(NPObject* npObj); |
110 | 111 |
111 // This function is only caled on NPObjects from the plugin. | 112 // This function is only caled on NPObjects from the plugin. |
112 static void NPPInvalidate(NPObject *obj); | 113 static void NPPInvalidate(NPObject *obj); |
113 static NPClass npclass_proxy_; | 114 static NPClass npclass_proxy_; |
114 | 115 |
115 scoped_refptr<NPChannelBase> channel_; | 116 scoped_refptr<NPChannelBase> channel_; |
116 int route_id_; | 117 int route_id_; |
117 gfx::NativeViewId containing_window_; | 118 gfx::NativeViewId containing_window_; |
118 | 119 |
119 // The url of the main frame hosting the plugin. | 120 // The url of the main frame hosting the plugin. |
120 GURL page_url_; | 121 GURL page_url_; |
121 }; | 122 }; |
122 | 123 |
123 #endif // CONTENT_COMMON_NPOBJECT_PROXY_H_ | 124 #endif // CONTENT_COMMON_NPOBJECT_PROXY_H_ |
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