[Bug 23607] New: overflow:scroll should mean there's a scrolling box even if there's no overflow

https://www.w3.org/Bugs/Public/show_bug.cgi?id=23607

            Bug ID: 23607
           Summary: overflow:scroll should mean there's a scrolling box
                    even if there's no overflow
           Product: CSS
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: CSSOM View
          Assignee: simonp@opera.com
          Reporter: simonp@opera.com
        QA Contact: public-css-bugzilla@w3.org

http://dev.w3.org/csswg/cssom-view/#terminology

[[
Elements and viewports have an associated scrolling box if it overflows its
content area and either has a scrolling mechanism or the used value of the
'overflow-x' or 'overflow-y' property is 'hidden'. [CSSBOX]
]]

It appears that overflow:scroll should have a scrolling box always.

Change to:

Elements and viewports have an associated scrolling box if it has a scrolling
mechanism or it overflows its content area and the used value of the
'overflow-x' or 'overflow-y' property is 'hidden'. [CSSBOX]

This affects the behavior of document.body.scrollTop in quirks mode when body
has overflow:scroll but no overflowing content. See bug 23603

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Received on Wednesday, 23 October 2013 12:36:13 UTC