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Merge pull request #1791 from colinmcardell/ASCollectionDataController_supplementaryNodeOfKind-fix

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[ASCollectionDataController] Exposing -supplementaryNodeOfKind
This commit is contained in:
Adlai Holler 2016-07-08 12:50:32 -07:00 committed by GitHub
commit b1626b0f69
3 changed files with 20 additions and 4 deletions
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15
AsyncDisplayKit/ASCollectionView.h
View File

@ -278,9 +278,20 @@ NS_ASSUME_NONNULL_BEGIN
*
* @param indexPath The index path of the requested node.
*
* @returns a node for display at this indexpath.
* @returns a node for display at this indexpath or nil
*/
- (ASCellNode *)nodeForItemAtIndexPath:(NSIndexPath *)indexPath;
- (nullable ASCellNode *)nodeForItemAtIndexPath:(NSIndexPath *)indexPath;
/**
* Similar to -supplementaryViewForElementKind:atIndexPath:
*
* @param elementKind The kind of supplementary node to locate.
* @param indexPath The index path of the requested supplementary node.
*
* @returns The specified supplementary node or nil
*/
- (nullable ASCellNode *)supplementaryNodeForElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath;
/**
* Similar to -indexPathForCell:.

6
AsyncDisplayKit/ASCollectionView.mm
View File

@ -440,6 +440,11 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
return [_dataController nodeAtIndexPath:indexPath];
}
- (ASCellNode *)supplementaryNodeForElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath
{
return [_dataController supplementaryNodeOfKind:elementKind atIndexPath:indexPath];
}
- (NSIndexPath *)indexPathForNode:(ASCellNode *)cellNode
{
return [_dataController indexPathForNode:cellNode];
@ -592,6 +597,7 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
NSString *identifier = [self __reuseIdentifierForKind:kind];
UICollectionReusableView *view = [self dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:identifier forIndexPath:indexPath];
ASCellNode *node = [_dataController supplementaryNodeOfKind:kind atIndexPath:indexPath];
ASDisplayNodeAssert(node != nil, @"Supplementary node should exist. Kind = %@, indexPath = %@, collectionDataSource = %@", kind, indexPath, self);
[_rangeController configureContentView:view forCellNode:node];
return view;
}

3
AsyncDisplayKit/Details/ASCollectionDataController.mm
View File

@ -257,8 +257,7 @@
return nodesOfKindInSection[itemIndex];
}
}
ASDisplayNodeAssert(NO, @"Supplementary node should exist. Kind = %@, indexPath = %@, collectionDataSource = %@", kind, indexPath, self.collectionDataSource);
return [[ASCellNode alloc] init];
return nil;
}
#pragma mark - Private Helpers