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[ASCellNode] Upgrades to ASCellNodeVisibilityEvent to ensure it is always synchronized with visibilityDidChange:

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This commit is contained in:
Scott Goodson
2016-03-10 20:21:00 -08:00
parent c2b0670132
commit ff8ffffb7b
5 changed files with 47 additions and 31 deletions
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32
AsyncDisplayKit/ASTableView.mm
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@@ -615,24 +615,23 @@ static NSString * const kCellReuseIdentifier = @"_ASTableViewCell";
- (void)tableView:(UITableView *)tableView willDisplayCell:(_ASTableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
_pendingVisibleIndexPath = indexPath;
[_rangeController visibleNodeIndexPathsDidChangeWithScrollDirection:self.scrollDirection];
ASCellNode *cellNode = [cell node];
cellNode.scrollView = tableView;
if ([_asyncDelegate respondsToSelector:@selector(tableView:willDisplayNodeForRowAtIndexPath:)]) {
[_asyncDelegate tableView:self willDisplayNodeForRowAtIndexPath:indexPath];
}
[_rangeController visibleNodeIndexPathsDidChangeWithScrollDirection:self.scrollDirection];
ASCellNode *cellNode = [cell node];
if (ASSubclassOverridesSelector([ASCellNode class], [cellNode class], @selector(cellNodeVisibilityEvent:inScrollView:withCellFrame:))) {
[_cellsForVisibilityUpdates addObject:cell];
[cellNode cellNodeVisibilityEvent:ASCellNodeVisibilityEventVisible
inScrollView:tableView
withCellFrame:cell.frame];
}
if (cellNode.neverShowPlaceholders) {
[cellNode recursivelyEnsureDisplaySynchronously:YES];
}
if (ASSubclassOverridesSelector([ASCellNode class], [cellNode class], @selector(cellNodeVisibilityEvent:inScrollView:withCellFrame:))) {
[_cellsForVisibilityUpdates addObject:cell];
}
}
- (void)tableView:(UITableView *)tableView didEndDisplayingCell:(_ASTableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath
@@ -640,21 +639,18 @@ static NSString * const kCellReuseIdentifier = @"_ASTableViewCell";
if ([_pendingVisibleIndexPath isEqual:indexPath]) {
_pendingVisibleIndexPath = nil;
}
ASCellNode *cellNode = [cell node];
[_rangeController visibleNodeIndexPathsDidChangeWithScrollDirection:self.scrollDirection];
if ([_asyncDelegate respondsToSelector:@selector(tableView:didEndDisplayingNode:forRowAtIndexPath:)]) {
ASCellNode *node = ((_ASTableViewCell *)cell).node;
ASDisplayNodeAssertNotNil(node, @"Expected node associated with removed cell not to be nil.");
[_asyncDelegate tableView:self didEndDisplayingNode:node forRowAtIndexPath:indexPath];
ASDisplayNodeAssertNotNil(cellNode, @"Expected node associated with removed cell not to be nil.");
[_asyncDelegate tableView:self didEndDisplayingNode:cellNode forRowAtIndexPath:indexPath];
}
if ([_cellsForVisibilityUpdates containsObject:cell]) {
[_cellsForVisibilityUpdates removeObject:cell];
ASCellNode *node = ((_ASTableViewCell *)cell).node;
[node cellNodeVisibilityEvent:ASCellNodeVisibilityEventInvisible
inScrollView:tableView
withCellFrame:cell.frame];
}
#pragma clang diagnostic push
@@ -663,6 +659,8 @@ static NSString * const kCellReuseIdentifier = @"_ASTableViewCell";
[_asyncDelegate tableView:self didEndDisplayingNodeForRowAtIndexPath:indexPath];
}
#pragma clang diagnostic pop
cellNode.scrollView = nil;
}