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This commit is contained in:
Li Tan
2015-02-11 19:15:08 -08:00
parent 6a2c472910
commit 831aa47ae0
8 changed files with 226 additions and 211 deletions
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22
AsyncDisplayKit/ASCollectionView.h
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@@ -36,6 +36,14 @@
/**
* Initializer.
*
* @discussion If asyncDataFetching is enabled, the `AScollectionView` will fetch data through `collectionView:numberOfRowsInSection:` and
* `collectionView:nodeForRowAtIndexPath:` in async mode from background thread. Otherwise, the methods will be invoked synchronically
* from calling thread.
* Enabling asyncDataFetching could avoid blocking main thread for `ASCellNode` allocation, which is frequently reported issue for
* large scale data. On another hand, the application code need take the responsibility to avoid data inconsistence. Specifically,
* we will lock the data source through `collectionViewLockDataSource`, and unlock it by `collectionViewUnlockDataSource` after the data fetching.
* The application should not update the data source while the data source is locked, to keep data consistence.
*/
- (instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(UICollectionViewLayout *)layout asyncDataFetching:(BOOL)asyncDataFetchingEnabled;
@@ -112,25 +120,23 @@
*/
- (ASCellNode *)collectionView:(ASCollectionView *)collectionView nodeForItemAtIndexPath:(NSIndexPath *)indexPath;
@optional
/**
* Indicator to lock the data source for data loading in asyn mode.
* Indicator to lock the data source for data fetching in asyn mode.
* We should not update the data source until the data source has been unlocked. Otherwise, it will incur data inconsistence or exception
* due to the data access in async mode.
*
* @param tableView The sender.
* @param collectionView The sender.
*/
- (void)collectionViewLockDataSourceForDataUpdating:(ASCollectionView *)collectionView;
- (void)collectionViewLockDataSource:(ASCollectionView *)collectionView;
/**
* Indicator to unlock the data source for data loading in asyn mode.
* Indicator to unlock the data source for data fetching in asyn mode.
* We should not update the data source until the data source has been unlocked. Otherwise, it will incur data inconsistence or exception
* due to the data access in async mode.
*
* @param tableView The sender.
* @param collectionView The sender.
*/
- (void)collectionViewUnlockDataSourceForDataUpdating:(ASCollectionView *)collectionView;
- (void)collectionViewUnlockDataSource:(ASCollectionView *)collectionView;
@end