Swiftgram/Source/ASCollectionViewLayoutFacilitatorProtocol.h
2017-02-26 18:14:13 -08:00

46 lines
1.6 KiB
Objective-C

//
// ASCollectionViewLayoutFacilitatorProtocol.h
// AsyncDisplayKit
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#pragma once
#import <Foundation/Foundation.h>
/**
* This facilitator protocol is intended to help Layout to better
* gel with the CollectionView
*/
@protocol ASCollectionViewLayoutFacilitatorProtocol <NSObject>
/**
* Inform that the collectionView is editing the cells at a list of indexPaths
*
* @param indexPaths an array of NSIndexPath objects of cells being/will be edited.
* @param isBatched indicates whether the editing operation will be batched by the collectionView
*
* NOTE: when isBatched, used in combination with -collectionViewWillPerformBatchUpdates
*/
- (void)collectionViewWillEditCellsAtIndexPaths:(NSArray *)indexPaths batched:(BOOL)isBatched;
/**
* Inform that the collectionView is editing the sections at a set of indexes
*
* @param indexes an NSIndexSet of section indexes being/will be edited.
* @param batched indicates whether the editing operation will be batched by the collectionView
*
* NOTE: when batched, used in combination with -collectionViewWillPerformBatchUpdates
*/
- (void)collectionViewWillEditSectionsAtIndexSet:(NSIndexSet *)indexes batched:(BOOL)batched;
/**
* Informs the delegate that the collectionView is about to call performBatchUpdates
*/
- (void)collectionViewWillPerformBatchUpdates;
@end