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[ASCollectionLayout] Fix element lookup for supplementary attributes (#1707)

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This commit is contained in:
Craig Howarth
2019-12-23 16:17:14 -08:00
committed by Huy Nguyen
parent 88a640add8
commit b59c6d07e1
1 changed files with 12 additions and 2 deletions
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Source/Private/ASCollectionLayout.mm
+12 -2
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@@ -338,7 +338,12 @@ static const ASScrollDirection kASStaticScrollDirection = (ASScrollDirectionRigh
if (NSUInteger count = blockingAttrs.count) {
ASDispatchApply(count, queue, 0, ^(size_t i) {
UICollectionViewLayoutAttributes *attrs = blockingAttrs[i];
ASCellNode *node = [elements elementForItemAtIndexPath:attrs.indexPath].node;
ASCellNode *node;
if (attrs.representedElementKind == nil) {
node = [elements elementForItemAtIndexPath:attrs.indexPath].node;
} else {
node = [elements supplementaryElementOfKind:attrs.representedElementKind atIndexPath:attrs.indexPath].node;
}
CGSize expectedSize = attrs.frame.size;
if (! CGSizeEqualToSize(expectedSize, node.calculatedSize)) {
[node layoutThatFits:ASCollectionLayoutElementSizeRangeFromSize(expectedSize)];
@@ -353,7 +358,12 @@ static const ASScrollDirection kASStaticScrollDirection = (ASScrollDirectionRigh
__strong ASElementMap *strongElements = weakElements;
if (strongElements) {
UICollectionViewLayoutAttributes *attrs = nonBlockingAttrs[i];
ASCellNode *node = [elements elementForItemAtIndexPath:attrs.indexPath].node;
ASCellNode *node;
if (attrs.representedElementKind == nil) {
node = [elements elementForItemAtIndexPath:attrs.indexPath].node;
} else {
node = [elements supplementaryElementOfKind:attrs.representedElementKind atIndexPath:attrs.indexPath].node;
}
CGSize expectedSize = attrs.frame.size;
if (! CGSizeEqualToSize(expectedSize, node.calculatedSize)) {
[node layoutThatFits:ASCollectionLayoutElementSizeRangeFromSize(expectedSize)];