Isolated FS for media devices.

webkit/fileapi/media_file_system_proxy.h

+// Copyright (c) 2012 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 WEBKIT_FILEAPI_MEDIA_FILE_SYSTEM_PROXY_H_
+#define WEBKIT_FILEAPI_MEDIA_FILE_SYSTEM_PROXY_H_
+
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+#include "webkit/fileapi/file_system_operation_interface.h"
+
+class GURL;
+
+namespace fileapi {
+
+class FileSystemOperationContext; 
+
+// The interface class for media file system proxy.
+class MediaFileSystemProxyInterface :
+    public base::RefCountedThreadSafe<MediaFileSystemProxyInterface> {
+ public:
+  // Gets the file or directory info for given|path|.
+  virtual void GetFileInfo(const FileSystemURL& url,
+      const FileSystemOperationInterface::GetMetadataCallback& callback) = 0;
+
+  // Copies a file or directory from |src_url| to |dest_url|. If
+  // |src_url| is a directory, the contents of |src_url| are copied to
+  // |dest_url| recursively. A new file or directory is created at
+  // |dest_url| as needed.
+  virtual void Copy(
+      const FileSystemURL& src_url,
+      const FileSystemURL& dest_url,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
+  // Moves a file or directory from |src_url| to |dest_url|. A new file
+  // or directory is created at |dest_url| as needed.
+  virtual void Move(
+      const FileSystemURL& src_url,
+      const FileSystemURL& dest_url,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
+  // Reads contents of a directory at |url|.
+  virtual void ReadDirectory(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url,
+      const FileSystemOperationInterface::ReadDirectoryCallback& callback) = 0;
+
+  // Removes a file or directory at |url|. If |recursive| is true, remove
+  // all files and directories under the directory at |url| recursively.
+  virtual void Remove(const FileSystemURL& url, bool recursive,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
+  // Creates a directory at |url|. If |exclusive| is true, an error is
+  // raised in case a directory is already present at the URL. If
+  // |recursive| is true, create parent directories as needed just like
+  // mkdir -p does.
+  virtual void CreateDirectory(
+      const FileSystemURL& url,
+      bool exclusive,
+      bool recursive,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
+  // Creates a file at |url|. If the flag |is_exclusive| is true, an
+  // error is raised when a file already exists at the path. It is
+  // an error if a directory or a hosted document is already present at the
+  // path, or the parent directory of the path is not present yet.
+  virtual void CreateFile(
+      const FileSystemURL& url,
+      bool exclusive,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
+  // Opens file for a give |url| with specified |flags| (see
+  // base::PlatformFileFlags for details).
+  virtual void OpenFile(
+      const FileSystemURL& url,
+      int flags,
+      base::ProcessHandle peer_handle,
+      const FileSystemOperationInterface::OpenFileCallback& callback) = 0;
+
+  // Notifies that a file opened by OpenFile (at |path|) is closed.
+  virtual void NotifyCloseFile(const FileSystemURL& url) = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<MediaFileSystemProxyInterface>;
+  virtual ~MediaFileSystemProxyInterface() {}
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_MEDIA_FILE_SYSTEM_PROXY_H_