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 3 // found in the LICENSE file. 4 5 #ifndef PPAPI_PROXY_PPB_FILE_REF_PROXY_H_ 6 #define PPAPI_PROXY_PPB_FILE_REF_PROXY_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/memory/linked_ptr.h" 12 #include "ppapi/c/pp_file_info.h" 13 #include "ppapi/c/pp_module.h" 14 #include "ppapi/c/pp_resource.h" 15 #include "ppapi/c/pp_time.h" 16 #include "ppapi/proxy/interface_proxy.h" 17 #include "ppapi/proxy/ppapi_proxy_export.h" 18 #include "ppapi/proxy/proxy_completion_callback_factory.h" 19 #include "ppapi/shared_impl/host_resource.h" 20 #include "ppapi/utility/completion_callback_factory.h" 21 22 namespace ppapi { 23 24 struct PPB_FileRef_CreateInfo; 25 26 namespace proxy { 27 28 class SerializedVarReturnValue; 29 30 class PPAPI_PROXY_EXPORT PPB_FileRef_Proxy 31 : public NON_EXPORTED_BASE(InterfaceProxy) { 32 public: 33 explicit PPB_FileRef_Proxy(Dispatcher* dispatcher); 34 virtual ~PPB_FileRef_Proxy(); 35 36 static PP_Resource CreateProxyResource(PP_Instance instance, 37 PP_Resource file_system, 38 const char* path); 39 static PP_Resource CreateProxyResource( 40 const PPB_FileRef_CreateInfo& serialized); 41 42 // InterfaceProxy implementation. 43 virtual bool OnMessageReceived(const IPC::Message& msg); 44 45 // Takes a resource in the host and converts it into a serialized file ref 46 // "create info" for reconstitution in the plugin. This struct contains all 47 // the necessary information about the file ref. 48 // 49 // Various PPAPI functions return file refs from various interfaces, so this 50 // function is public so anybody can send a file ref. 51 static void SerializeFileRef(PP_Resource file_ref, 52 PPB_FileRef_CreateInfo* result); 53 54 // Creates a plugin resource from the given CreateInfo sent from the host. 55 // The value will be the result of calling SerializeFileRef on the host. 56 // This represents passing the resource ownership to the plugin. This 57 // function also checks the validity of the result and returns 0 on failure. 58 // 59 // Various PPAPI functions return file refs from various interfaces, so this 60 // function is public so anybody can receive a file ref. 61 static PP_Resource DeserializeFileRef( 62 const PPB_FileRef_CreateInfo& serialized); 63 64 static const ApiID kApiID = API_ID_PPB_FILE_REF; 65 66 private: 67 // Plugin -> host message handlers. 68 void OnMsgCreate(PP_Instance instance, 69 PP_Resource file_system, 70 const std::string& path, 71 PPB_FileRef_CreateInfo* result); 72 void OnMsgGetParent(const HostResource& host_resource, 73 PPB_FileRef_CreateInfo* result); 74 void OnMsgMakeDirectory(const HostResource& host_resource, 75 PP_Bool make_ancestors, 76 uint32_t callback_id); 77 void OnMsgTouch(const HostResource& host_resource, 78 PP_Time last_access, 79 PP_Time last_modified, 80 uint32_t callback_id); 81 void OnMsgDelete(const HostResource& host_resource, 82 uint32_t callback_id); 83 void OnMsgRename(const HostResource& file_ref, 84 const HostResource& new_file_ref, 85 uint32_t callback_id); 86 void OnMsgQuery(const HostResource& file_ref, 87 uint32_t callback_id); 88 void OnMsgGetAbsolutePath(const HostResource& host_resource, 89 SerializedVarReturnValue result); 90 void OnMsgReadDirectoryEntries(const HostResource& file_ref, 91 uint32_t callback_id); 92 93 // Host -> Plugin message handlers. 94 void OnMsgCallbackComplete(const HostResource& host_resource, 95 uint32_t callback_id, 96 int32_t result); 97 void OnMsgQueryCallbackComplete(const HostResource& host_resource, 98 const PP_FileInfo& info, 99 uint32_t callback_id, 100 int32_t result); 101 void OnMsgReadDirectoryEntriesCallbackComplete( 102 const HostResource& host_resource, 103 const std::vector<ppapi::PPB_FileRef_CreateInfo>& infos, 104 const std::vector<PP_FileType>& file_types, 105 uint32_t callback_id, 106 int32_t result); 107 108 struct HostCallbackParams { 109 HostCallbackParams(const HostResource& host_res, uint32_t cb_id) 110 : host_resource(host_res), callback_id(cb_id) { 111 } 112 HostResource host_resource; 113 uint32_t callback_id; 114 }; 115 116 void OnCallbackCompleteInHost(int32_t result, 117 const HostResource& host_resource, 118 uint32_t callback_id); 119 void OnQueryCallbackCompleteInHost( 120 int32_t result, 121 const HostResource& host_resource, 122 linked_ptr<PP_FileInfo> info, 123 uint32_t callback_id); 124 void OnReadDirectoryEntriesCallbackCompleteInHost( 125 int32_t result, 126 HostCallbackParams params, 127 linked_ptr<std::vector<ppapi::PPB_FileRef_CreateInfo> > files, 128 linked_ptr<std::vector<PP_FileType> > file_types); 129 130 ProxyCompletionCallbackFactory<PPB_FileRef_Proxy> callback_factory_; 131 132 DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Proxy); 133 }; 134 135 } // namespace proxy 136 } // namespace ppapi 137 138 #endif // PPAPI_PROXY_PPB_FILE_REF_PROXY_H_ 139
