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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 #ifndef PPAPI_PROXY_INTERFACE_PROXY_H_ | 5 #ifndef PPAPI_PROXY_INTERFACE_PROXY_H_ |
| 6 #define PPAPI_PROXY_INTERFACE_PROXY_H_ | 6 #define PPAPI_PROXY_INTERFACE_PROXY_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "ipc/ipc_channel.h" | 9 #include "ipc/ipc_channel.h" |
| 10 #include "ipc/ipc_message.h" | 10 #include "ipc/ipc_message.h" |
| 11 #include "ppapi/c/pp_completion_callback.h" | 11 #include "ppapi/c/pp_completion_callback.h" |
| 12 #include "ppapi/c/pp_resource.h" | 12 #include "ppapi/c/pp_resource.h" |
| 13 #include "ppapi/c/pp_var.h" | 13 #include "ppapi/c/pp_var.h" |
| 14 #include "ppapi/proxy/interface_id.h" | 14 #include "ppapi/proxy/interface_id.h" |
| 15 | 15 |
| 16 namespace pp { | 16 namespace pp { |
| 17 namespace proxy { | 17 namespace proxy { |
| 18 | 18 |
| 19 class Dispatcher; | 19 class Dispatcher; |
| 20 | 20 |
| 21 class InterfaceProxy : public IPC::Channel::Listener, | 21 class InterfaceProxy : public IPC::Channel::Listener, |
| 22 public IPC::Message::Sender { | 22 public IPC::Message::Sender { |
| 23 public: | 23 public: |
| 24 // Creates the given interface associated with the given dispatcher. The | 24 // Factory function type for interfaces. Ownership of the returned pointer |
| 25 // dispatcher manages our lifetime. | 25 // is transferred to the caller. |
| 26 // | 26 typedef InterfaceProxy* (*Factory)(Dispatcher* dispatcher, |
| 27 // The target interface pointer, when non-NULL, indicates that this is a | 27 const void* target_interface); |
| 28 // target proxy (see dispatcher.h for a definition). In this case, the proxy | 28 |
| 29 // will interpret this pointer to the actual implementation of the interface | 29 // Information about the interface. Each interface has a static function to |
| 30 // in the local process. | 30 // return its info, which allows either construction on the target side, and |
| 31 // | 31 // getting the proxied interface on the source side (see dispatcher.h for |
| 32 // If the target interface is NULL, this proxy will be a "source" interface. | 32 // terminology). |
| 33 InterfaceProxy(Dispatcher* dispatcher, const void* target_interface); | 33 struct Info { |
| 34 const void* interface; | |
| 35 | |
| 36 const char* name; | |
| 37 InterfaceID id; | |
| 38 | |
| 39 bool is_trusted; | |
| 40 | |
| 41 InterfaceProxy::Factory create; | |
|
piman
2011/02/07 21:29:22
create->create_proxy ?
| |
| 42 }; | |
| 43 | |
| 34 virtual ~InterfaceProxy(); | 44 virtual ~InterfaceProxy(); |
| 35 | 45 |
| 36 // See dispatcher.h for definitions of source and target. | 46 // The actual implementation of the given interface in the current process. |
| 37 bool is_source_proxy() const { return !target_interface_; } | |
| 38 bool is_target_proxy() const { return !!target_interface_; } | |
| 39 | |
| 40 // When this proxy is the "target" of the IPC communication (see | |
| 41 // dispatcher.h), this target_interface pointer will indicate the local | |
| 42 // side's interface pointer. This contains the functions that actually | |
| 43 // implement the proxied interface. | |
| 44 // | |
| 45 // This will be NULL when this proxy is a source proxy. | |
| 46 const void* target_interface() const { return target_interface_; } | 47 const void* target_interface() const { return target_interface_; } |
| 47 | 48 |
| 48 Dispatcher* dispatcher() const { return dispatcher_; } | 49 Dispatcher* dispatcher() const { return dispatcher_; } |
| 49 | 50 |
| 50 // IPC::Message::Sender implementation. | 51 // IPC::Message::Sender implementation. |
| 51 virtual bool Send(IPC::Message* msg); | 52 virtual bool Send(IPC::Message* msg); |
| 52 | 53 |
| 53 // Returns the local implementation of the interface that will proxy it to | |
| 54 // the remote side. This is used on the source side only (see dispatcher.h). | |
| 55 virtual const void* GetSourceInterface() const = 0; | |
| 56 | |
| 57 // Returns the interface ID associated with this proxy. Implemented by each | |
| 58 // derived class to identify itself. | |
| 59 virtual InterfaceID GetInterfaceId() const = 0; | |
| 60 | |
| 61 // Sub-classes must implement IPC::Channel::Listener which contains this: | 54 // Sub-classes must implement IPC::Channel::Listener which contains this: |
| 62 //virtual bool OnMessageReceived(const IPC::Message& msg); | 55 //virtual bool OnMessageReceived(const IPC::Message& msg); |
| 63 | 56 |
| 64 protected: | 57 protected: |
| 58 // Creates the given interface associated with the given dispatcher. The | |
| 59 // dispatcher manages our lifetime. | |
| 60 // | |
| 61 // The target interface pointer, when non-NULL, indicates that this is a | |
| 62 // target proxy (see dispatcher.h for a definition). In this case, the proxy | |
| 63 // will interpret this pointer to the actual implementation of the interface | |
| 64 // in the local process. | |
| 65 InterfaceProxy(Dispatcher* dispatcher, const void* target_interface); | |
| 66 | |
| 65 uint32 SendCallback(PP_CompletionCallback callback); | 67 uint32 SendCallback(PP_CompletionCallback callback); |
| 66 PP_CompletionCallback ReceiveCallback(uint32 serialized_callback); | 68 PP_CompletionCallback ReceiveCallback(uint32 serialized_callback); |
| 67 | 69 |
| 68 private: | 70 private: |
| 69 Dispatcher* dispatcher_; | 71 Dispatcher* dispatcher_; |
| 70 const void* target_interface_; | 72 const void* target_interface_; |
| 71 }; | 73 }; |
| 72 | 74 |
| 73 inline PP_Bool BoolToPPBool(bool value) { | 75 inline PP_Bool BoolToPPBool(bool value) { |
| 74 return value ? PP_TRUE : PP_FALSE; | 76 return value ? PP_TRUE : PP_FALSE; |
| 75 } | 77 } |
| 76 | 78 |
| 77 inline bool PPBoolToBool(PP_Bool value) { | 79 inline bool PPBoolToBool(PP_Bool value) { |
| 78 return (PP_TRUE == value); | 80 return (PP_TRUE == value); |
| 79 } | 81 } |
| 80 | 82 |
| 81 } // namespace proxy | 83 } // namespace proxy |
| 82 } // namespace pp | 84 } // namespace pp |
| 83 | 85 |
| 84 #endif // PPAPI_PROXY_INTERFACE_PROXY_H_ | 86 #endif // PPAPI_PROXY_INTERFACE_PROXY_H_ |
| 85 | 87 |
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