| // Copyright (c) 2012 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 CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_ |
| #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_ |
| |
| #include <set> |
| |
| #include "chrome/browser/bookmarks/base_bookmark_model_observer.h" |
| |
| class BookmarkModel; |
| class BookmarkNode; |
| class PrefService; |
| |
| // BookmarkExpandedStateTracker is used to track a set of expanded nodes. The |
| // nodes are persisted in preferences. If an expanded node is removed from the |
| // model BookmarkExpandedStateTracker removes the node. |
| class BookmarkExpandedStateTracker : public BaseBookmarkModelObserver { |
| public: |
| typedef std::set<const BookmarkNode*> Nodes; |
| |
| BookmarkExpandedStateTracker(BookmarkModel* bookmark_model, |
| PrefService* pref_service); |
| virtual ~BookmarkExpandedStateTracker(); |
| |
| // The set of expanded nodes. |
| void SetExpandedNodes(const Nodes& nodes); |
| Nodes GetExpandedNodes(); |
| |
| private: |
| // BaseBookmarkModelObserver: |
| virtual void Loaded(BookmarkModel* model, bool ids_reassigned) OVERRIDE; |
| virtual void BookmarkModelChanged() OVERRIDE; |
| virtual void BookmarkModelBeingDeleted(BookmarkModel* model) OVERRIDE; |
| virtual void BookmarkNodeRemoved(BookmarkModel* model, |
| const BookmarkNode* parent, |
| int old_index, |
| const BookmarkNode* node) OVERRIDE; |
| virtual void BookmarkAllNodesRemoved(BookmarkModel* model) OVERRIDE; |
| |
| // Updates the value for |prefs::kBookmarkEditorExpandedNodes| from |
| // GetExpandedNodes(). |
| void UpdatePrefs(const Nodes& nodes); |
| |
| BookmarkModel* bookmark_model_; |
| PrefService* pref_service_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BookmarkExpandedStateTracker); |
| }; |
| |
| #endif // CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_ |