Refactor FileSystem

content/renderer/pepper/pepper_file_system_host.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 CONTENT_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_
+#define CONTENT_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_
+
+#include "base/basictypes.h"
+#include "base/memory/weak_ptr.h"
+#include "googleurl/src/gurl.h"
+#include "ppapi/c/pp_file_info.h"
+#include "ppapi/host/host_message_context.h"
+#include "ppapi/host/resource_host.h"
+
+namespace content {
+
+class RendererPpapiHost;
+
+class PepperFileSystemHost :
+    public ppapi::host::ResourceHost,
+    public base::SupportsWeakPtr<PepperFileSystemHost> {
+ public:
+  PepperFileSystemHost(RendererPpapiHost* host,
+                       PP_Instance instance,
+                       PP_Resource resource,
+                       PP_FileSystemType type);
+  virtual ~PepperFileSystemHost();
+
+  // ppapi::host::ResourceHost override.
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+  // Supports FileRefs direct access on the host side.
+  PP_FileSystemType GetType() const { return type_; }
+  bool IsOpened() const { return opened_; }
+  GURL GetRootUrl() const { return root_url_; }
+
+  // It's public only to allow PlatformCallbackAdaptor to access.
+  void OpenFileSystemReply(int32_t pp_error,
+                           const GURL& root);
+
+ private:
+  int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
+                        int64_t expected_size);
+
+  RendererPpapiHost* renderer_ppapi_host_;
+  ppapi::host::ReplyMessageContext reply_context_;
+  base::WeakPtrFactory<PepperFileSystemHost> weak_factory_;
+
+  PP_FileSystemType type_;
+  bool opened_;  // whether open is successful.
+  GURL root_url_;
+  bool called_open_;  // whether open has been called.
+
+  DISALLOW_COPY_AND_ASSIGN(PepperFileSystemHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_