Refactoring bookmark viewcontrollers

ios/chrome/browser/ui/bookmarks/bookmark_home_view_controller.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_HOME_VIEW_CONTROLLER_H_
-#define IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_HOME_VIEW_CONTROLLER_H_
-
-#import "ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.h"
-
-#include <set>
-#include <vector>
-
-@class BookmarkCollectionView;
-class GURL;
-@protocol UrlLoader;
-
-namespace bookmarks {
-class BookmarkModel;
-class BookmarkNode;
-}  // namespace bookmarks
-
-namespace ios {
-class ChromeBrowserState;
-}  // namespace ios
-
-@class BookmarkHomeViewController;
-@protocol BookmarkHomeViewControllerDelegate
-// The view controller wants to be dismissed.
-// If |url| != GURL(), then the user has selected |url| for navigation.
-- (void)bookmarkHomeViewControllerWantsDismissal:
-            (BookmarkHomeViewController*)controller
-                                 navigationToUrl:(const GURL&)url;
-@end
-
-// Full screen view controller for browsing the bookmark hierarchy, batch
-// editing bookmarks, and navigating to a single bookmark.
-// Abstracty base class that provides common, non-UI functionality.
-@interface BookmarkHomeViewController : UIViewController {
- @protected
-  // The following 2 ivars both represent the set of nodes being edited.
-  // The set is for fast lookup.
-  // The vector maintains the order that edit nodes were added.
-  // Use the relevant instance methods to modify these two ivars in tandem.
-  // DO NOT modify these two ivars directly.
-  std::set<const bookmarks::BookmarkNode*> _editNodes;
-  std::vector<const bookmarks::BookmarkNode*> _editNodesOrdered;
-}
-// Designated initializer.
-- (instancetype)initWithLoader:(id<UrlLoader>)loader
-                  browserState:(ios::ChromeBrowserState*)browserState;
-
-#pragma mark - Properties Relevant To Presenters
-
-@property(nonatomic, weak) id<BookmarkHomeViewControllerDelegate> delegate;
-
-#pragma mark - Properties Relevant To Subclasses
-
-// Whether the view controller is in editing mode.
-@property(nonatomic, assign, readonly) BOOL editing;
-// The set of selected index paths for edition.
-@property(nonatomic, strong, readonly) NSMutableArray* editIndexPaths;
-@property(nonatomic, assign, readonly) bookmarks::BookmarkModel* bookmarks;
-@property(nonatomic, weak, readonly) id<UrlLoader> loader;
-@property(nonatomic, assign, readonly) ios::ChromeBrowserState* browserState;
-
-#pragma mark - Relevant Methods
-// Replaces |_editNodes| and |_editNodesOrdered| with new container objects.
-- (void)resetEditNodes;
-// Adds |node| and |indexPath| if it isn't already present.
-- (void)insertEditNode:(const bookmarks::BookmarkNode*)node
-           atIndexPath:(NSIndexPath*)indexPath;
-// Removes |node| and |indexPath| if it's present.
-- (void)removeEditNode:(const bookmarks::BookmarkNode*)node
-           atIndexPath:(NSIndexPath*)indexPath;
-
-#pragma mark - Methods Intended For Subclass Override
-
-// Subclasses must call the super class implementation.
-// This method updates the property, and resets the edit nodes.
-- (void)setEditing:(BOOL)editing animated:(BOOL)animated;
-
-// Dismisses any modal interaction elements. The base implementation does
-// nothing.
-- (void)dismissModals:(BOOL)animated;
-
-@end
-
-@interface BookmarkHomeViewController (PrivateAPIExposedForTesting)
-- (const std::set<const bookmarks::BookmarkNode*>&)editNodes;
-- (void)setEditNodes:(const std::set<const bookmarks::BookmarkNode*>&)editNodes;
-@end
-
-#endif  // IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_HOME_VIEW_CONTROLLER_H_