Bug 87982

Summary: [CSS Regions] overflow:scroll does not display scrollbars for overflowing content
Product: WebKit Reporter: Mihai Balan <mibalan>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WORKSFORME    
Severity: Normal CC: donggwan.kim, mihnea, shanestephens, WebkitBugTracker, webkit
Priority: P2 Keywords: AdobeTracked
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 57312    
Attachments:
Description Flags
Ref test highlighting the problem none

Mihai Balan
Reported 2012-05-31 08:51:52 PDT
When region-overflow is set to auto, content overflowing in the last region should obey the value of the overflow property. Visible and hidden are properly processed, but for overflow: scroll, no scrollbar is drawn and the content cannot be scrolled using the mouse scroll wheel.
Attachments
Ref test highlighting the problem (1.06 KB, application/x-zip-compressed)
2012-05-31 09:34 PDT, Mihai Balan 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Mihai Balan
Comment 1 2012-05-31 09:34:09 PDT
Created attachment 145106 [details] Ref test highlighting the problem
Mihai Balan
Comment 2 2013-03-12 03:50:08 PDT
Also, when explicitly setting the overflow property of the last region to overflow: scroll; even though space is reserved for scrollbars, they can't be used (they're disabled, no "thumb" is drawn). Another thing to note here: DOM JavaScript properties related to scrolling return incorrect values or just don't work. This include things like element.scrollHeight, or setting element.scrollTop.
Mihai Balan
Comment 3 2013-03-14 07:44:32 PDT
Another note: horizontal overflow (with lrtb writing mode) doesn't work either, when specifying overflow: auto or overflow-x: scroll. (Note that, in this case, the overflow property should apply to any region in the region chain, not just the last one)
Michelangelo De Simone
Comment 4 2013-06-13 20:35:00 PDT
Still repros on today's nightly (r151543)
Mihnea Ovidenie
Comment 5 2014-03-19 03:03:56 PDT
Fixed in latest nightly, most likely due to the latest fixes in the regions && scrolling area.
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