//    MIT License
//
//    Copyright (c) 2019 https://liangdahong.com
//
//    Permission is hereby granted, free of charge, to any person obtaining a copy
//    of this software and associated documentation files (the "Software"), to deal
//    in the Software without restriction, including without limitation the rights
//    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//    copies of the Software, and to permit persons to whom the Software is
//    furnished to do so, subject to the following conditions:
//
//    The above copyright notice and this permission notice shall be included in all
//    copies or substantial portions of the Software.
//
//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//    SOFTWARE.

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@class BMLongPressDragCellCollectionView;

@protocol BMLongPressDragCellCollectionViewDataSource <UICollectionViewDataSource>

@required

/**
 获取数据源，内部会在合适的时候获取最新的数据源，必须实现
 
 @param dragCellCollectionView dragCellCollectionView
 @return 最新的数据源

  - (nullable NSArray *)dataSourceWithDragCellCollectionView:(BMLongPressDragCellCollectionView *)dragCellCollectionView {
    return self.dataArray;
 }
 */
- (nullable NSArray <NSArray <id> *> *)dataSourceWithDragCellCollectionView:(__kindof BMLongPressDragCellCollectionView *)dragCellCollectionView;

@end

NS_ASSUME_NONNULL_END