Bug 168376 – WKWebView inside a UICollectionView flashes when items are inserted above it

• Component: New Bugs
• Status: RESOLVED FIXED

[Tim Horton]

WKWebView inside a UICollectionView flashes when items are inserted above it

[Tim Horton]

Created attachment 301627 [details]
Patch

[Build Bot]

Comment on attachment 301627 [details]
Patch

Attachment 301627 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3122794

New failing tests:
scrollingcoordinator/ios/sync-layer-positions-after-scroll.html
scrollingcoordinator/ios/non-stable-viewport-scroll.html

[Build Bot]

Created attachment 301634 [details]
Archive of layout-test-results from ews125 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews125  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Tim Horton]

Gonna need Simon's help with that one.

[Tim Horton]

Created attachment 301643 [details]
Patch

[Build Bot]

Comment on attachment 301643 [details]
Patch

Attachment 301643 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3123568

New failing tests:
fast/text-autosizing/ios/autosize-width.html

[Build Bot]

Created attachment 301646 [details]
Archive of layout-test-results from ews124 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews124  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Tim Horton]

Created attachment 301668 [details]
Patch

[WebKit Commit Bot]

Attachment 301668 [details] did not pass style-queue:


ERROR: Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:292:  Extra space before ( in function call  [whitespace/parens] [4]
Total errors found: 1 in 18 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Simon Fraser (smfr)]

Comment on attachment 301668 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=301668&action=review

> Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:2216
> +        [webView _updateContentRectsWithState:!webView->_hasScheduledVisibleContentRectUpdateFromScrollViewInUnstableState];

It seems a little silly to pass state to _updateContentRectsWithState: which webView has internally.

> Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:2322
> +        _visibleContentRectUpdateCallbacks.takeLast()();

Took me two reads to see ()()
Maybe auto callback = _visibleContentRectUpdateCallbacks.takeLast();
callback();

[Tim Horton]

(In reply to comment #10)
> Comment on attachment 301668 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=301668&action=review
> 
> > Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:2216
> > +        [webView _updateContentRectsWithState:!webView->_hasScheduledVisibleContentRectUpdateFromScrollViewInUnstableState];
> 
> It seems a little silly to pass state to _updateContentRectsWithState: which
> webView has internally.
> 
> > Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:2322
> > +        _visibleContentRectUpdateCallbacks.takeLast()();
> 
> Took me two reads to see ()()
> Maybe auto callback = _visibleContentRectUpdateCallbacks.takeLast();
> callback();

Both fair points, I will fix them (and wait for the bots).

[Build Bot]

Comment on attachment 301668 [details]
Patch

Attachment 301668 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3125027

New failing tests:
scrollingcoordinator/ios/sync-layer-positions-after-scroll.html
pageoverlay/overlay-remove-reinsert-view.html

[Build Bot]

Created attachment 301675 [details]
Archive of layout-test-results from ews126 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews126  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Tim Horton]

Created attachment 301686 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 301686 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=301686&action=review

> Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:2212
> +        return;
> +    _hasInstalledPreCommitHandlerForVisibleRectUpdate = YES;

Blank line after the return please.

[Tim Horton]

Created attachment 301690 [details]
Patch

[WebKit Commit Bot]

Attachment 301690 [details] did not pass style-queue:


ERROR: Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:292:  Extra space before ( in function call  [whitespace/parens] [4]
Total errors found: 1 in 19 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Build Bot]

Comment on attachment 301690 [details]
Patch

Attachment 301690 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3126051

New failing tests:
fast/text-autosizing/ios/autosize-width.html

[Build Bot]

Created attachment 301698 [details]
Archive of layout-test-results from ews124 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews124  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Tim Horton]

This one makes even less sense.

[Tim Horton]

Created attachment 301798 [details]
Patch

[WebKit Commit Bot]

Attachment 301798 [details] did not pass style-queue:


ERROR: Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:292:  Extra space before ( in function call  [whitespace/parens] [4]
Total errors found: 1 in 19 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Tim Horton]

https://trac.webkit.org/changeset/212459