chrome/browser/sync_file_system/file_change.h

   1 // Copyright 2013 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_SYNC_FILE_SYSTEM_FILE_CHANGE_H_
   6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_FILE_CHANGE_H_
   7
   8 #include <deque>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/files/file_path.h"
  13 #include "chrome/browser/sync_file_system/sync_file_type.h"
  14 #include "storage/browser/fileapi/file_system_url.h"
  15
  16 namespace sync_file_system {
  17
  18 class FileChange {
  19  public:
  20   enum ChangeType {
  21     FILE_CHANGE_ADD_OR_UPDATE,
  22     FILE_CHANGE_DELETE,
  23   };
  24
  25   FileChange(ChangeType change, SyncFileType file_type);
  26
  27   bool IsAddOrUpdate() const { return change_ == FILE_CHANGE_ADD_OR_UPDATE; }
  28   bool IsDelete() const { return change_ == FILE_CHANGE_DELETE; }
  29
  30   bool IsFile() const { return file_type_ == SYNC_FILE_TYPE_FILE; }
  31   bool IsDirectory() const { return file_type_ == SYNC_FILE_TYPE_DIRECTORY; }
  32   bool IsTypeUnknown() const { return !IsFile() && !IsDirectory(); }
  33
  34   ChangeType change() const { return change_; }
  35   SyncFileType file_type() const { return file_type_; }
  36
  37   std::string DebugString() const;
  38
  39   bool operator==(const FileChange& that) const {
  40     return change() == that.change() &&
  41         file_type() == that.file_type();
  42   }
  43
  44  private:
  45   ChangeType change_;
  46   SyncFileType file_type_;
  47 };
  48
  49 class FileChangeList {
  50  public:
  51   typedef std::deque<FileChange> List;
  52
  53   FileChangeList();
  54   ~FileChangeList();
  55
  56   // Updates the list with the |new_change|.
  57   void Update(const FileChange& new_change);
  58
  59   size_t size() const { return list_.size(); }
  60   bool empty() const { return list_.empty(); }
  61   void clear() { list_.clear(); }
  62   const List& list() const { return list_; }
  63   const FileChange& front() const { return list_.front(); }
  64   const FileChange& back() const { return list_.back(); }
  65
  66   FileChangeList PopAndGetNewList() const;
  67
  68   std::string DebugString() const;
  69
  70  private:
  71   List list_;
  72 };
  73
  74 }  // namespace sync_file_system
  75
  76 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_FILE_CHANGE_H_