Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/bookmarks/bookmark_model_bridge_observer.h

+// Copyright 2014 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 IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_MODEL_BRIDGE_OBSERVER_H_
+#define IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_MODEL_BRIDGE_OBSERVER_H_
+
+#import <Foundation/Foundation.h>
+
+#include "base/compiler_specific.h"
+#include "components/bookmarks/browser/bookmark_model_observer.h"
+
+// The ObjC translations of the C++ observer callbacks are defined here.
+@protocol BookmarkModelBridgeObserver<NSObject>
+// The bookmark model has loaded.
+- (void)bookmarkModelLoaded;
+// The node has changed, but not its children.
+- (void)bookmarkNodeChanged:(const bookmarks::BookmarkNode*)bookmarkNode;
+// The node has not changed, but the ordering and existence of its children have
+// changed.
+- (void)bookmarkNodeChildrenChanged:
+    (const bookmarks::BookmarkNode*)bookmarkNode;
+// The node has moved to a new parent folder.
+- (void)bookmarkNode:(const bookmarks::BookmarkNode*)bookmarkNode
+     movedFromParent:(const bookmarks::BookmarkNode*)oldParent
+            toParent:(const bookmarks::BookmarkNode*)newParent;
+// |node| was deleted from |folder|.
+- (void)bookmarkNodeDeleted:(const bookmarks::BookmarkNode*)node
+                 fromFolder:(const bookmarks::BookmarkNode*)folder;
+// All non-permanent nodes have been removed.
+- (void)bookmarkModelRemovedAllNodes;
+
+@optional
+// The node favicon changed.
+- (void)bookmarkNodeFaviconChanged:(const bookmarks::BookmarkNode*)bookmarkNode;
+@end
+
+namespace bookmarks {
+// A bridge that translates BookmarkModelObserver C++ callbacks into ObjC
+// callbacks.
+class BookmarkModelBridge : public BookmarkModelObserver {
+ public:
+  explicit BookmarkModelBridge(id<BookmarkModelBridgeObserver> observer,
+                               BookmarkModel* model);
+  ~BookmarkModelBridge() override;
+
+ private:
+  void BookmarkModelLoaded(BookmarkModel* model, bool ids_reassigned) override;
+  void BookmarkModelBeingDeleted(BookmarkModel* model) override;
+  void BookmarkNodeMoved(BookmarkModel* model,
+                         const BookmarkNode* old_parent,
+                         int old_index,
+                         const BookmarkNode* new_parent,
+                         int new_index) override;
+  void BookmarkNodeAdded(BookmarkModel* model,
+                         const BookmarkNode* parent,
+                         int index) override;
+  void BookmarkNodeRemoved(BookmarkModel* model,
+                           const BookmarkNode* parent,
+                           int old_index,
+                           const BookmarkNode* node,
+                           const std::set<GURL>& removed_urls) override;
+  void BookmarkNodeChanged(BookmarkModel* model,
+                           const BookmarkNode* node) override;
+  void BookmarkNodeFaviconChanged(BookmarkModel* model,
+                                  const BookmarkNode* node) override;
+  void BookmarkNodeChildrenReordered(BookmarkModel* model,
+                                     const BookmarkNode* node) override;
+  void BookmarkAllUserNodesRemoved(BookmarkModel* model,
+                                   const std::set<GURL>& removed_urls) override;
+
+  id<BookmarkModelBridgeObserver> observer_;  // weak
+  BookmarkModel* model_;                      // weak
+};
+}  // namespace bookmarks
+
+#endif  // IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_MODEL_BRIDGE_OBSERVER_H_