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Add support to move supplementary nodes with section position changes

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This commit is contained in:
Levi McCallum
2015-10-06 12:17:11 -07:00
parent 9235ce5ac2
commit 3f0092435a
3 changed files with 19 additions and 6 deletions
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15
AsyncDisplayKit/Details/ASCollectionDataController.mm
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@@ -141,7 +141,20 @@
- (void)willMoveSection:(NSInteger)section toSection:(NSInteger)newSection
{
// TODO: Implement
NSArray *elementKinds = [self.collectionDataSource supplementaryNodeKindsInDataController:self];
[elementKinds enumerateObjectsUsingBlock:^(NSString *kind, NSUInteger idx, BOOL *stop) {
NSArray *indexPaths = ASIndexPathsForMultidimensionalArrayAtIndexSet([self editingNodesOfKind:kind], [NSIndexSet indexSetWithIndex:section]);
NSArray *nodes = ASFindElementsInMultidimensionalArrayAtIndexPaths([self editingNodesOfKind:kind], indexPaths);
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
// update the section of indexpaths
NSIndexPath *sectionIndexPath = [[NSIndexPath alloc] initWithIndex:newSection];
NSMutableArray *updatedIndexPaths = [[NSMutableArray alloc] initWithCapacity:indexPaths.count];
[indexPaths enumerateObjectsUsingBlock:^(NSIndexPath *indexPath, NSUInteger idx, BOOL *stop) {
[updatedIndexPaths addObject:[sectionIndexPath indexPathByAddingIndex:[indexPath indexAtPosition:indexPath.length - 1]]];
}];
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
}];
}
- (void)_populateSupplementaryNodesOfKind:(NSString *)kind withMutableNodes:(NSMutableArray *)nodes mutableIndexPaths:(NSMutableArray *)indexPaths