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.
5 // C++ bridge class to send a selector to a Cocoa object when the
6 // bookmark model changes. Some Cocoa objects edit the bookmark model
7 // and temporarily save a copy of the state (e.g. bookmark button
8 // editor). As a fail-safe, these objects want an easy cancel if the
9 // model changes out from under them. For example, if you have the
10 // bookmark button editor sheet open, then edit the bookmark in the
11 // bookmark manager, we'd want to simply cancel the editor.
13 // This class is conservative and may result in notifications which
14 // aren't strictly necessary. For example, node removal only needs to
15 // cancel an edit if the removed node is a folder (editors often have
16 // a list of "new parents"). But, just to be sure, notification
17 // happens on any removal.
19 #ifndef CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_FOR_COCOA_H
20 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_FOR_COCOA_H
22 #import <Cocoa/Cocoa.h>
26 #include "base/basictypes.h"
27 #include "base/mac/scoped_block.h"
28 #include "chrome/browser/bookmarks/bookmark_model.h"
29 #include "chrome/browser/bookmarks/bookmark_model_observer.h"
31 class BookmarkModelObserverForCocoa : public BookmarkModelObserver {
33 // Callback called on a significant model change. |nodeWasDeleted| will
34 // be YES if an observed node was deleted in the change.
35 typedef void(^ChangeCallback)(BOOL nodeWasDeleted);
37 // When a |model| changes, or an observed node within it does, call a
39 BookmarkModelObserverForCocoa(BookmarkModel* model,
40 ChangeCallback callback);
41 virtual ~BookmarkModelObserverForCocoa();
43 // Starts and stops observing a specified |node|; the node must be contained
45 void StartObservingNode(const BookmarkNode* node);
46 void StopObservingNode(const BookmarkNode* node);
48 // BookmarkModelObserver:
49 virtual void BookmarkModelBeingDeleted(BookmarkModel* model) OVERRIDE;
50 virtual void BookmarkNodeMoved(BookmarkModel* model,
51 const BookmarkNode* old_parent,
53 const BookmarkNode* new_parent,
54 int new_index) OVERRIDE;
55 virtual void BookmarkNodeRemoved(BookmarkModel* model,
56 const BookmarkNode* parent,
58 const BookmarkNode* node) OVERRIDE;
59 virtual void BookmarkAllNodesRemoved(BookmarkModel* model) OVERRIDE;
60 virtual void BookmarkNodeChanged(BookmarkModel* model,
61 const BookmarkNode* node) OVERRIDE;
63 // Some notifications we don't care about, but by being pure virtual
64 // in the base class we must implement them.
66 virtual void Loaded(BookmarkModel* model, bool ids_reassigned) OVERRIDE { }
67 virtual void BookmarkNodeAdded(BookmarkModel* model,
68 const BookmarkNode* parent,
69 int index) OVERRIDE { }
70 virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
71 const BookmarkNode* node) OVERRIDE { }
72 virtual void BookmarkNodeChildrenReordered(
74 const BookmarkNode* node) OVERRIDE { }
76 virtual void ExtensiveBookmarkChangesBeginning(
77 BookmarkModel* model) OVERRIDE { }
79 virtual void ExtensiveBookmarkChangesEnded(BookmarkModel* model) OVERRIDE { }
82 BookmarkModel* model_; // Weak; it is owned by a Profile.
83 std::set<const BookmarkNode*> nodes_; // Weak items owned by a BookmarkModel.
84 base::mac::ScopedBlock<ChangeCallback> callback_;
86 // Send a notification to the client; |deleted| is YES if an observed node was
87 // deleted in the change.
88 void Notify(BOOL deleted);
90 DISALLOW_COPY_AND_ASSIGN(BookmarkModelObserverForCocoa);
93 #endif // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_FOR_COCOA_H