[Webkit-unassigned] [Bug 135242] New: compile no-button pseudoclass css selectors

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=135242

           Summary: compile no-button pseudoclass css selectors
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: achristensen at apple.com
                CC: bdakin at apple.com, benjamin at webkit.org


This requires some changes to the css selector compiler that will allow compiling of other pseudoclasses.  I have a few questions:
1) Are the tests in LayoutTests/scrollbars sufficient?
2) Why are the scrollbar pseudoclasses separate in SelectorChecker::checkScrollbarPseudoClass and SelectorChecker::checkOne?  Should I do something similar in the compiler?
3) SelectorChecker::SelectorCheckingContext and SelectorCompiler::CheckingContext are starting to look the same.  Should they be rearranged to be the same class?  Is adding more things into SelectorCompiler::CheckingContext going to have a significant performance cost?

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