components/undo/bookmark_undo_service.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 COMPONENTS_UNDO_BOOKMARK_UNDO_SERVICE_H_
   6 #define COMPONENTS_UNDO_BOOKMARK_UNDO_SERVICE_H_
   7
   8 #include <map>
   9
  10 #include "base/scoped_observer.h"
  11 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
  12 #include "components/bookmarks/browser/bookmark_node_data.h"
  13 #include "components/keyed_service/core/keyed_service.h"
  14 #include "components/undo/bookmark_renumber_observer.h"
  15 #include "components/undo/undo_manager.h"
  16
  17 namespace bookmarks {
  18 class BookmarkModel;
  19 class BookmarkModelObserver;
  20 }
  21
  22 // BookmarkUndoService --------------------------------------------------------
  23
  24 // BookmarkUndoService is owned by the profile, and is responsible for observing
  25 // BookmarkModel changes in order to provide an undo for those changes.
  26 class BookmarkUndoService : public bookmarks::BaseBookmarkModelObserver,
  27                             public KeyedService,
  28                             public BookmarkRenumberObserver {
  29  public:
  30   BookmarkUndoService();
  31   ~BookmarkUndoService() override;
  32
  33   // Starts the BookmarkUndoService and register it as a BookmarkModelObserver.
  34   // Calling this method is optional, but the service will be inactive until it
  35   // is called.
  36   void Start(bookmarks::BookmarkModel* model);
  37
  38   UndoManager* undo_manager() { return &undo_manager_; }
  39
  40   // KeyedService:
  41   void Shutdown() override;
  42
  43  private:
  44   // bookmarks::BaseBookmarkModelObserver:
  45   void BookmarkModelChanged() override {}
  46   void BookmarkModelLoaded(bookmarks::BookmarkModel* model,
  47                            bool ids_reassigned) override;
  48   void BookmarkModelBeingDeleted(bookmarks::BookmarkModel* model) override;
  49   void BookmarkNodeMoved(bookmarks::BookmarkModel* model,
  50                          const bookmarks::BookmarkNode* old_parent,
  51                          int old_index,
  52                          const bookmarks::BookmarkNode* new_parent,
  53                          int new_index) override;
  54   void BookmarkNodeAdded(bookmarks::BookmarkModel* model,
  55                          const bookmarks::BookmarkNode* parent,
  56                          int index) override;
  57   void OnWillRemoveBookmarks(bookmarks::BookmarkModel* model,
  58                              const bookmarks::BookmarkNode* parent,
  59                              int old_index,
  60                              const bookmarks::BookmarkNode* node) override;
  61   void OnWillRemoveAllUserBookmarks(bookmarks::BookmarkModel* model) override;
  62   void OnWillChangeBookmarkNode(bookmarks::BookmarkModel* model,
  63                                 const bookmarks::BookmarkNode* node) override;
  64   void OnWillReorderBookmarkNode(bookmarks::BookmarkModel* model,
  65                                  const bookmarks::BookmarkNode* node) override;
  66   void GroupedBookmarkChangesBeginning(
  67       bookmarks::BookmarkModel* model) override;
  68   void GroupedBookmarkChangesEnded(bookmarks::BookmarkModel* model) override;
  69
  70   // BookmarkRenumberObserver:
  71   void OnBookmarkRenumbered(int64 old_id, int64 new_id) override;
  72
  73   UndoManager undo_manager_;
  74   ScopedObserver<bookmarks::BookmarkModel, bookmarks::BookmarkModelObserver>
  75       scoped_observer_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(BookmarkUndoService);
  78 };
  79
  80 #endif  // COMPONENTS_UNDO_BOOKMARK_UNDO_SERVICE_H_