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_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_ 6 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_ 7 8 class BookmarkModel; 9 class BookmarkNode; 10 11 // Observer for the BookmarkModel. 12 class BookmarkModelObserver { 13 public: 14 // Invoked when the model has finished loading. |ids_reassigned| mirrors 15 // that of BookmarkLoadDetails::ids_reassigned. See it for details. 16 virtual void Loaded(BookmarkModel* model, bool ids_reassigned) = 0; 17 18 // Invoked from the destructor of the BookmarkModel. 19 virtual void BookmarkModelBeingDeleted(BookmarkModel* model) {} 20 21 // Invoked when a node has moved. 22 virtual void BookmarkNodeMoved(BookmarkModel* model, 23 const BookmarkNode* old_parent, 24 int old_index, 25 const BookmarkNode* new_parent, 26 int new_index) = 0; 27 28 // Invoked when a node has been added. 29 virtual void BookmarkNodeAdded(BookmarkModel* model, 30 const BookmarkNode* parent, 31 int index) = 0; 32 33 // Invoked before a node is removed. 34 // |parent| the parent of the node that will be removed. 35 // |old_index| the index of the node about to be removed in |parent|. 36 // |node| is the node to be removed. 37 virtual void OnWillRemoveBookmarks(BookmarkModel* model, 38 const BookmarkNode* parent, 39 int old_index, 40 const BookmarkNode* node) {} 41 42 // Invoked when a node has been removed, the item may still be starred though. 43 // |parent| the parent of the node that was removed. 44 // |old_index| the index of the removed node in |parent| before it was 45 // removed. 46 // |node| is the node that was removed. 47 virtual void BookmarkNodeRemoved(BookmarkModel* model, 48 const BookmarkNode* parent, 49 int old_index, 50 const BookmarkNode* node) = 0; 51 52 // Invoked before the title or url of a node is changed. 53 virtual void OnWillChangeBookmarkNode(BookmarkModel* model, 54 const BookmarkNode* node) {} 55 56 // Invoked when the title or url of a node changes. 57 virtual void BookmarkNodeChanged(BookmarkModel* model, 58 const BookmarkNode* node) = 0; 59 60 // Invoked when a favicon has been loaded or changed. 61 virtual void BookmarkNodeFaviconChanged(BookmarkModel* model, 62 const BookmarkNode* node) = 0; 63 64 // Invoked before the direct children of |node| have been reordered in some 65 // way, such as sorted. 66 virtual void OnWillReorderBookmarkNode(BookmarkModel* model, 67 const BookmarkNode* node) {} 68 69 // Invoked when the children (just direct children, not descendants) of 70 // |node| have been reordered in some way, such as sorted. 71 virtual void BookmarkNodeChildrenReordered(BookmarkModel* model, 72 const BookmarkNode* node) = 0; 73 74 // Invoked before an extensive set of model changes is about to begin. 75 // This tells UI intensive observers to wait until the updates finish to 76 // update themselves. 77 // These methods should only be used for imports and sync. 78 // Observers should still respond to BookmarkNodeRemoved immediately, 79 // to avoid holding onto stale node pointers. 80 virtual void ExtensiveBookmarkChangesBeginning(BookmarkModel* model) {} 81 82 // Invoked after an extensive set of model changes has ended. 83 // This tells observers to update themselves if they were waiting for the 84 // update to finish. 85 virtual void ExtensiveBookmarkChangesEnded(BookmarkModel* model) {} 86 87 // Invoked before all non-permanent bookmark nodes are removed. 88 virtual void OnWillRemoveAllBookmarks(BookmarkModel* model) {} 89 90 // Invoked when all non-permanent bookmark nodes have been removed. 91 virtual void BookmarkAllNodesRemoved(BookmarkModel* model) = 0; 92 93 protected: 94 virtual ~BookmarkModelObserver() {} 95 }; 96 97 #endif // CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_ 98
