1 files changed, 77 insertions, 0 deletions
diff --git a/webkit/browser/fileapi/syncable/file_change.h b/webkit/browser/fileapi/syncable/file_change.h
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+++ b/webkit/browser/fileapi/syncable/file_change.h
@@ -0,0 +1,77 @@
+// Copyright 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 WEBKIT_BROWSER_FILEAPI_SYNCABLE_FILE_CHANGE_H_
+#define WEBKIT_BROWSER_FILEAPI_SYNCABLE_FILE_CHANGE_H_
+
+#include <deque>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/files/file_path.h"
+#include "webkit/browser/fileapi/file_system_url.h"
+#include "webkit/browser/fileapi/syncable/sync_file_type.h"
+#include "webkit/storage/webkit_storage_export.h"
+
+namespace sync_file_system {
+
+class WEBKIT_STORAGE_EXPORT FileChange {
+ public:
+  enum ChangeType {
+    FILE_CHANGE_ADD_OR_UPDATE,
+    FILE_CHANGE_DELETE,
+  };
+
+  FileChange(ChangeType change, SyncFileType file_type);
+
+  bool IsAddOrUpdate() const { return change_ == FILE_CHANGE_ADD_OR_UPDATE; }
+  bool IsDelete() const { return change_ == FILE_CHANGE_DELETE; }
+
+  bool IsFile() const { return file_type_ == SYNC_FILE_TYPE_FILE; }
+  bool IsDirectory() const { return file_type_ == SYNC_FILE_TYPE_DIRECTORY; }
+  bool IsTypeUnknown() const { return !IsFile() && !IsDirectory(); }
+
+  ChangeType change() const { return change_; }
+  SyncFileType file_type() const { return file_type_; }
+
+  std::string DebugString() const;
+
+  bool operator==(const FileChange& that) const {
+    return change() == that.change() &&
+        file_type() == that.file_type();
+  }
+
+ private:
+  ChangeType change_;
+  SyncFileType file_type_;
+};
+
+class WEBKIT_STORAGE_EXPORT FileChangeList {
+ public:
+  typedef std::deque<FileChange> List;
+
+  FileChangeList();
+  ~FileChangeList();
+
+  // Updates the list with the |new_change|.
+  void Update(const FileChange& new_change);
+
+  size_t size() const { return list_.size(); }
+  bool empty() const { return list_.empty(); }
+  void clear() { list_.clear(); }
+  const List& list() const { return list_; }
+  const FileChange& front() const { return list_.front(); }
+  const FileChange& back() const { return list_.back(); }
+
+  FileChangeList PopAndGetNewList() const;
+
+  std::string DebugString() const;
+
+ private:
+  List list_;
+};
+
+}  // namespace sync_file_system
+
+#endif  // WEBKIT_BROWSER_FILEAPI_SYNCABLE_FILE_CHANGE_H_