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Code Issues Projects Releases Wiki Activity

Tweak conversation view's "load more" behavior.

This commit is contained in:
Matthew Chen 2019-01-17 14:08:36 -05:00
parent 70f4d69fb7
commit 127ccccb80
1 changed files with 3 additions and 23 deletions
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26
Signal/src/ViewControllers/ConversationView/ConversationViewController.m
View File

@ -1186,27 +1186,6 @@ typedef enum : NSUInteger {
if (@available(iOS 10, *)) {
self.collectionView.prefetchingEnabled = YES;
}
// Now that we're using a "minimal" initial load window,
// try to increase the load window a moment after we've
// settled into the view.
__weak ConversationViewController *weakSelf = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(NSEC_PER_SEC / 2)), dispatch_get_main_queue(), ^{
ConversationViewController *strongSelf = weakSelf;
if (!strongSelf) {
return;
}
// Try to auto-extend the load window.
BOOL isMainAppAndActive = CurrentAppContext().isMainAppAndActive;
if (strongSelf.isUserScrolling || !strongSelf.isViewVisible || !isMainAppAndActive) {
return;
}
if (!strongSelf.conversationViewModel.canLoadMoreItems) {
return;
}
[strongSelf.conversationViewModel loadAnotherPageOfMessages];
});
}
self.conversationViewModel.focusMessageIdOnOpen = nil;
@ -1703,8 +1682,9 @@ typedef enum : NSUInteger {
if (!self.showLoadMoreHeader) {
return;
}
static const CGFloat kThreshold = 50.f;
if (self.collectionView.contentOffset.y < kThreshold) {
CGSize screenSize = UIScreen.mainScreen.bounds.size;
CGFloat loadMoreThreshold = MAX(screenSize.width, screenSize.height);
if (self.collectionView.contentOffset.y < loadMoreThreshold) {
[self.conversationViewModel loadAnotherPageOfMessages];
}
}