Refactor FileSystem

ppapi/proxy/file_system_resource.h

+// Copyright (c) 2013 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_FILE_SYSTEM_RESOURCE_H_
+#define PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
+
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "ppapi/c/pp_file_info.h"
+#include "ppapi/proxy/connection.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/proxy/resource_message_params.h"
+#include "ppapi/thunk/ppb_file_system_api.h"
+
+namespace ppapi {
+
+class TrackedCallback;
+
+namespace proxy {
+
+class PPAPI_PROXY_EXPORT FileSystemResource
+    : public PluginResource,
+      public NON_EXPORTED_BASE(thunk::PPB_FileSystem_API) {
+ public:
+  FileSystemResource(Connection connection,
+                     PP_Instance instance,
+                     PP_FileSystemType type);
+  virtual ~FileSystemResource();
+
+  // Resource overrides.
+  virtual thunk::PPB_FileSystem_API* AsPPB_FileSystem_API() OVERRIDE;
+
+  // PPB_FileSystem_API implementation.
+  virtual int32_t Open(int64_t expected_size,
+                       scoped_refptr<TrackedCallback> callback) OVERRIDE;
+  virtual PP_FileSystemType GetType() OVERRIDE;
+
+ private:
+  // Called when the host has responded to our open request.
+  void OpenComplete(scoped_refptr<TrackedCallback> callback,
+                    const ResourceMessageReplyParams& params);
+
+  PP_FileSystemType type_;
+  bool called_open_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileSystemResource);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_