components/undo/bookmark_undo_utils.cc

   1 // Copyright 2014 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 #include "components/undo/bookmark_undo_utils.h"
   6
   7 #include "components/undo/bookmark_undo_service.h"
   8 #include "components/undo/undo_manager.h"
   9
  10 // ScopedSuspendBookmarkUndo --------------------------------------------------
  11
  12 ScopedSuspendBookmarkUndo::ScopedSuspendBookmarkUndo(
  13     BookmarkUndoService* bookmark_undo_service)
  14     : undo_manager_(bookmark_undo_service
  15                         ? bookmark_undo_service->undo_manager()
  16                         : nullptr) {
  17   if (undo_manager_)
  18     undo_manager_->SuspendUndoTracking();
  19 }
  20
  21 ScopedSuspendBookmarkUndo::~ScopedSuspendBookmarkUndo() {
  22   if (undo_manager_)
  23     undo_manager_->ResumeUndoTracking();
  24 }