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Ignore typing indicators when updating lastVisibleSortId

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This commit is contained in:
Nora Trapp 2019-06-11 19:48:50 -07:00
parent 943a5f1a55
commit b77fac0729
1 changed files with 12 additions and 1 deletions
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13
Signal/src/ViewControllers/ConversationView/ConversationViewController.m
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@ -3460,7 +3460,18 @@ typedef enum : NSUInteger {
return;
}
id<ConversationViewItem> _Nullable lastVisibleViewItem = [self lastVisibleViewItem];
NSIndexPath *_Nullable lastVisibleIndexPath = [self lastVisibleIndexPath];
id<ConversationViewItem> _Nullable lastVisibleViewItem;
if (lastVisibleIndexPath) {
lastVisibleViewItem = [self viewItemForIndex:lastVisibleIndexPath.row];
}
// If the last item is currently a typing indicator, check the previous
// view item (if one exists), since typing indicators don't have sortIds
if ([lastVisibleViewItem.interaction isKindOfClass:[OWSTypingIndicatorInteraction class]] && lastVisibleIndexPath.row > 0) {
lastVisibleViewItem = [self viewItemForIndex:lastVisibleIndexPath.row - 1];
}
if (lastVisibleViewItem) {
uint64_t lastVisibleSortId = lastVisibleViewItem.interaction.sortId;
self.lastVisibleSortId = MAX(self.lastVisibleSortId, lastVisibleSortId);