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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 // A proxy for NPObject that sends all calls to the object to an NPObjectStub | |
| 6 // running in a different process. | |
| 7 | |
| 8 #ifndef CONTENT_COMMON_NPOBJECT_PROXY_H_ | |
| 9 #define CONTENT_COMMON_NPOBJECT_PROXY_H_ | |
| 10 | |
| 11 #include "base/memory/ref_counted.h" | |
| 12 #include "content/common/npobject_base.h" | |
| 13 #include "googleurl/src/gurl.h" | |
| 14 #include "ipc/ipc_listener.h" | |
| 15 #include "ipc/ipc_sender.h" | |
| 16 #include "third_party/npapi/bindings/npruntime.h" | |
| 17 #include "ui/gfx/native_widget_types.h" | |
| 18 | |
| 19 struct NPObject; | |
| 20 | |
| 21 namespace content { | |
| 22 class NPChannelBase; | |
| 23 | |
| 24 // When running a plugin in a different process from the renderer, we need to | |
| 25 // proxy calls to NPObjects across process boundaries. This happens both ways, | |
| 26 // as a plugin can get an NPObject for the window, and a page can get an | |
| 27 // NPObject for the plugin. In the process that interacts with the NPobject we | |
| 28 // give it an NPObjectProxy instead. All calls to it are sent across an IPC | |
| 29 // channel (specifically, a NPChannelBase). The NPObjectStub on the other | |
| 30 // side translates the IPC messages into calls to the actual NPObject, and | |
| 31 // returns the marshalled result. | |
| 32 class NPObjectProxy : public IPC::Listener, | |
| 33 public IPC::Sender, | |
| 34 public NPObjectBase { | |
| 35 public: | |
| 36 virtual ~NPObjectProxy(); | |
| 37 | |
| 38 static NPObject* Create(NPChannelBase* channel, | |
| 39 int route_id, | |
| 40 int render_view_id, | |
| 41 const GURL& page_url); | |
| 42 | |
| 43 // IPC::Sender implementation: | |
| 44 virtual bool Send(IPC::Message* msg) OVERRIDE; | |
| 45 int route_id() { return route_id_; } | |
| 46 NPChannelBase* channel() { return channel_; } | |
| 47 | |
| 48 // The next 9 functions are called on NPObjects from the plugin and browser. | |
| 49 static bool NPHasMethod(NPObject *obj, | |
| 50 NPIdentifier name); | |
| 51 static bool NPInvoke(NPObject *obj, | |
| 52 NPIdentifier name, | |
| 53 const NPVariant *args, | |
| 54 uint32_t arg_count, | |
| 55 NPVariant *result); | |
| 56 static bool NPInvokeDefault(NPObject *npobj, | |
| 57 const NPVariant *args, | |
| 58 uint32_t arg_count, | |
| 59 NPVariant *result); | |
| 60 static bool NPHasProperty(NPObject *obj, | |
| 61 NPIdentifier name); | |
| 62 static bool NPGetProperty(NPObject *obj, | |
| 63 NPIdentifier name, | |
| 64 NPVariant *result); | |
| 65 static bool NPSetProperty(NPObject *obj, | |
| 66 NPIdentifier name, | |
| 67 const NPVariant *value); | |
| 68 static bool NPRemoveProperty(NPObject *obj, | |
| 69 NPIdentifier name); | |
| 70 static bool NPNEnumerate(NPObject *obj, | |
| 71 NPIdentifier **value, | |
| 72 uint32_t *count); | |
| 73 static bool NPNConstruct(NPObject *npobj, | |
| 74 const NPVariant *args, | |
| 75 uint32_t arg_count, | |
| 76 NPVariant *result); | |
| 77 | |
| 78 // The next two functions are only called on NPObjects from the browser. | |
| 79 static bool NPNEvaluate(NPP npp, | |
| 80 NPObject *obj, | |
| 81 NPString *script, | |
| 82 NPVariant *result); | |
| 83 | |
| 84 static bool NPInvokePrivate(NPP npp, | |
| 85 NPObject *obj, | |
| 86 bool is_default, | |
| 87 NPIdentifier name, | |
| 88 const NPVariant *args, | |
| 89 uint32_t arg_count, | |
| 90 NPVariant *result); | |
| 91 | |
| 92 static NPObjectProxy* GetProxy(NPObject* object); | |
| 93 static const NPClass* npclass() { return &npclass_proxy_; } | |
| 94 | |
| 95 // NPObjectBase implementation. | |
| 96 virtual NPObject* GetUnderlyingNPObject() OVERRIDE; | |
| 97 | |
| 98 virtual IPC::Listener* GetChannelListener() OVERRIDE; | |
| 99 | |
| 100 private: | |
| 101 NPObjectProxy(NPChannelBase* channel, | |
| 102 int route_id, | |
| 103 int render_view_id, | |
| 104 const GURL& page_url); | |
| 105 | |
| 106 // IPC::Listener implementation: | |
| 107 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; | |
| 108 virtual void OnChannelError() OVERRIDE; | |
| 109 | |
| 110 static NPObject* NPAllocate(NPP, NPClass*); | |
| 111 static void NPDeallocate(NPObject* npObj); | |
| 112 | |
| 113 // This function is only caled on NPObjects from the plugin. | |
| 114 static void NPPInvalidate(NPObject *obj); | |
| 115 static NPClass npclass_proxy_; | |
| 116 | |
| 117 scoped_refptr<NPChannelBase> channel_; | |
| 118 int route_id_; | |
| 119 int render_view_id_; | |
| 120 | |
| 121 // The url of the main frame hosting the plugin. | |
| 122 GURL page_url_; | |
| 123 }; | |
| 124 | |
| 125 } // namespace content | |
| 126 | |
| 127 #endif // CONTENT_COMMON_NPOBJECT_PROXY_H_ | |
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Chromium Code Reviews
Issue 15047014:
Move child-common classes to content/common_child (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src