Implement proxying for FileRef and FileChooser....

ppapi/proxy/ppb_file_ref_proxy.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_PROXY_PPB_FILE_REF_PROXY_H_
+#define PPAPI_PROXY_PPB_FILE_REF_PROXY_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "ppapi/c/pp_module.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_time.h"
+#include "ppapi/proxy/interface_proxy.h"
+
+struct PPB_FileRef_Dev;
+
+namespace pp {
+namespace proxy {
+
+class HostResource;
+struct PPBFileRef_CreateInfo;
+
+class PPB_FileRef_Proxy : public InterfaceProxy {
+ public:
+  PPB_FileRef_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  virtual ~PPB_FileRef_Proxy();
+
+  static const Info* GetInfo();
+
+  const PPB_FileRef_Dev* ppb_file_ref_target() const {
+    return static_cast<const PPB_FileRef_Dev*>(target_interface());
+  }
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+  // Takes a resource in the host and converts it into a serialized file ref
+  // "create info" for reconstitution in the plugin. This struct contains all
+  // the necessary information about the file ref.
+  //
+  // This function is not static because it needs access to the particular
+  // dispatcher and host interface.
+  //
+  // Various PPAPI functions return file refs from various interfaces, so this
+  // function is public so anybody can send a file ref.
+  void SerializeFileRef(PP_Resource file_ref,
+                        PPBFileRef_CreateInfo* result);
+
+  // Creates a plugin resource from the given CreateInfo sent from the host.
+  // The value will be the result of calling SerializeFileRef on the host.
+  // This represents passing the resource ownership to the plugin. This
+  // function also checks the validity of the result and returns 0 on failure.
+  //
+  // Various PPAPI functions return file refs from various interfaces, so this
+  // function is public so anybody can receive a file ref.
+  static PP_Resource DeserializeFileRef(
+      const PPBFileRef_CreateInfo& serialized);
+
+ private:
+  // Message handlers.
+  void OnMsgCreate(const HostResource& file_system,
+                   const std::string& path,
+                   PPBFileRef_CreateInfo* result);
+  void OnMsgGetParent(const HostResource& host_resource,
+                      PPBFileRef_CreateInfo* result);
+  void OnMsgMakeDirectory(const HostResource& host_resource,
+                          PP_Bool make_ancestors,
+                          uint32_t serialized_callback);
+  void OnMsgTouch(const HostResource& host_resource,
+                  PP_Time last_access,
+                  PP_Time last_modified,
+                  uint32_t serialized_callback);
+  void OnMsgDelete(const HostResource& host_resource,
+                   uint32_t serialized_callback);
+  void OnMsgRename(const HostResource& file_ref,
+                   const HostResource& new_file_ref,
+                   uint32_t serialized_callback);
+
+  DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Proxy);
+};
+
+}  // namespace proxy
+}  // namespace pp
+
+#endif  // PPAPI_PROXY_PPB_FILE_REF_PROXY_H_