chrome/browser/chromeos/drive/file_change.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CHANGE_H_
   6 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CHANGE_H_
   7
   8 #include <set>
   9
  10 #include "base/files/file_path.h"
  11
  12 namespace drive {
  13
  14 class FileChange;
  15
  16 // Set of changes.
  17 typedef std::set<FileChange> FileChangeSet;
  18
  19 // Represents change in the filesystem. Rename is represented as two entries:
  20 // of type DELETED and ADDED. CHANGED type is for changed contents of
  21 // directories or for changed metadata and/or contents of files.
  22 class FileChange {
  23  public:
  24   enum Type {
  25     DELETED,
  26     ADDED,
  27     CHANGED,
  28   };
  29
  30   // Created an object representing a change of file or directory pointed by
  31   // |change_path|. The change is of |change_type| type.
  32   FileChange(const base::FilePath& path, Type type);
  33   ~FileChange();
  34
  35   // Factory method to create a FileChangeSet object with only one element.
  36   static FileChangeSet CreateSingleSet(const base::FilePath& path, Type type);
  37
  38   bool operator==(const FileChange &file_change) const {
  39     return path_ == file_change.path() && type_ == file_change.type();
  40   }
  41
  42   bool operator<(const FileChange &file_change) const {
  43     return (path_ < file_change.path()) ||
  44            (path_ == file_change.path() && type_ < file_change.type());
  45   }
  46
  47   const base::FilePath& path() const { return path_; }
  48
  49   Type type() const { return type_; }
  50
  51  private:
  52   const base::FilePath path_;
  53   const Type type_;
  54 };
  55
  56 }  // namespace drive
  57
  58 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CHANGE_H_