25323 2014-04-11 10:36:12 +0000 "fire an event named scroll" use UIEvent? 2016-03-14 15:33:47 +0000 1 1 1 Unclassified CSS CSSOM View unspecified PC All NEW P2 normal --- 1 zcorpan zcorpan crimsteam rbyers travil w3bugs public-css-bugzilla oldest_to_newest 103729 0 zcorpan 2014-04-11 10:36:12 +0000 http://dev.w3.org/csswg/cssom-view/#scrolling-0 [[ fire an event named scroll ]] Gecko uses UIEvent for scroll. http://software.hixie.ch/utilities/js/live-dom-viewer/saved/2937 103740 1 crimsteam 2014-04-11 12:33:35 +0000 I just wanted to add that in IE we have other behavior. Simple comparison: - Chrome always use Event - Firefox use UIEvent only for scroll event. << according D3E it should also be resize (https://dvcs.w3.org/hg/dom3events/raw-file/tip/html/DOM3-Events.html#event-type-resize) - IE use UIEvent for select, resize and scroll. More detail https://bugzilla.mozilla.org/show_bug.cgi?id=992703. Next problem is that when event is generated directly from UI then can be UIEvent interface. But sometimes we can make some synthetic action from script (using dedicated method) and how interpretate this? One browser use Event but other still use UIEvent. All specifications do not devote much space to exactly specify this behaviour. 125420 2 w3bugs 2016-03-09 22:58:24 +0000 In Edge, scroll is a UIEvent. In Safari, scroll is a plain Event. 125444 3 zcorpan 2016-03-11 15:53:04 +0000 So it's 50/50. :-( It seems .pageY contains potentially useful information in Gecko. Searching on github reveals that there are some pages that use it to record/store scroll position: https://github.com/search?l=javascript&q=onscroll+pagey&type=Code&utf8=✓ It seems less risky for WebKit/Blink to switch to UIEvent than the other way around, so I suggest we change scroll to use UIEvent. Relatedly, in Gecko, .pageY is on UIEvent, not on MouseEvent as the current spec says. Though Chromium has it on MouseEvent. http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3987 Rick, do you have opinions? 125476 4 zcorpan 2016-03-14 15:33:47 +0000 According to MSDN pageX is on MouseEvent in IE/Edge, so I suppose scroll being a UIEvent is only useful in Gecko currently. Travis, does MSDN match what Edge does? Do you have any thoughts what we should spec here?