Implement media path filter

webkit/fileapi/media/native_media_file_util.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_NATIVE_MEDIA_FILE_UTIL_H_
+#define WEBKIT_FILEAPI_MEDIA_NATIVE_MEDIA_FILE_UTIL_H_
+
+#include "webkit/fileapi/fileapi_export.h"
+#include "webkit/fileapi/isolated_file_util.h"
+
+namespace fileapi {
+
+// This class handles native file system operations with media type filtering
+// which is passed to each method via FileSystemOperationContext as
+// MediaPathFilter.
+class FILEAPI_EXPORT_PRIVATE NativeMediaFileUtil : public IsolatedFileUtil {
+ public:
+  NativeMediaFileUtil();
+
+  virtual PlatformFileError CreateOrOpen(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url,
+      int file_flags,
+      PlatformFile* file_handle,
+      bool* created) OVERRIDE;
+  virtual PlatformFileError EnsureFileExists(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url, bool* created) OVERRIDE;
+  virtual AbstractFileEnumerator* CreateFileEnumerator(
+      FileSystemOperationContext* context,
+      const FileSystemURL& root_url,
+      bool recursive) OVERRIDE;
+  virtual PlatformFileError Touch(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url,
+      const base::Time& last_access_time,
+      const base::Time& last_modified_time) OVERRIDE;
+  virtual PlatformFileError Truncate(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url,
+      int64 length) OVERRIDE;
+  virtual bool PathExists(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url) OVERRIDE;
+  virtual bool IsDirectoryEmpty(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url) OVERRIDE;
+  virtual PlatformFileError CopyOrMoveFile(
+      FileSystemOperationContext* context,
+      const FileSystemURL& src_url,
+      const FileSystemURL& dest_url,
+      bool copy) OVERRIDE;
+  virtual PlatformFileError CopyInForeignFile(
+        FileSystemOperationContext* context,
+        const FilePath& src_file_path,
+        const FileSystemURL& dest_url) OVERRIDE;
+  virtual PlatformFileError DeleteFile(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url) OVERRIDE;
+  virtual PlatformFileError GetFileInfo(
+      FileSystemOperationContext* context,
+      const FileSystemURL& url,
+      base::PlatformFileInfo* file_info,
+      FilePath* platform_path) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NativeMediaFileUtil);
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_MEDIA_NATIVE_MEDIA_FILE_UTIL_H_