1 // Copyright 2013 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 PPAPI_CONTENT_RENDERER_PEPPER_HOST_RESOURCE_VAR_H_ 6 #define PPAPI_CONTENT_RENDERER_PEPPER_HOST_RESOURCE_VAR_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "ipc/ipc_message.h" 10 #include "ppapi/c/pp_resource.h" 11 #include "ppapi/shared_impl/resource_var.h" 12 #include "ppapi/shared_impl/var.h" 13 14 namespace content { 15 16 // Represents a resource var, usable on the host side. Can either have a 17 // plugin-side resource or a pending resource host. 18 class HostResourceVar : public ppapi::ResourceVar { 19 public: 20 // Makes a null resource var. 21 HostResourceVar(); 22 23 // Makes a resource var with an existing plugin-side resource. 24 explicit HostResourceVar(PP_Resource pp_resource); 25 26 // Makes a resource var with a pending resource host. 27 // The |pending_renderer_host_id| is a pending resource host ID in the 28 // renderer to attach from the plugin. Depending on the type of resource, this 29 // may be 0. The |creation_message| contains additional data needed to create 30 // the plugin-side resource. Its type depends on the type of resource. 31 HostResourceVar(int pending_renderer_host_id, 32 const IPC::Message& creation_message); 33 34 // ResourceVar override. 35 virtual PP_Resource GetPPResource() const OVERRIDE; 36 virtual int GetPendingRendererHostId() const OVERRIDE; 37 virtual int GetPendingBrowserHostId() const OVERRIDE; 38 virtual const IPC::Message* GetCreationMessage() const OVERRIDE; 39 virtual bool IsPending() const OVERRIDE; 40 41 void set_pending_browser_host_id(int id) { pending_browser_host_id_ = id; } 42 43 protected: 44 virtual ~HostResourceVar(); 45 46 private: 47 // Real resource ID in the plugin. 0 if one has not yet been created 48 // (indicating that there is a pending resource host). 49 PP_Resource pp_resource_; 50 51 // Pending resource host ID in the renderer. 52 int pending_renderer_host_id_; 53 54 // Pending resource host ID in the browser. 55 int pending_browser_host_id_; 56 57 // If the plugin-side resource has not yet been created, carries a message to 58 // create a resource of the specific type on the plugin side. Otherwise, NULL. 59 scoped_ptr<IPC::Message> creation_message_; 60 61 DISALLOW_COPY_AND_ASSIGN(HostResourceVar); 62 }; 63 64 } // namespace content 65 66 #endif 67