2008-10-09  David Hyatt  <hyatt@apple.com>

        Add support for pseudo classes on scrollbar pseudo elements.  As an initial proof of concept only
        :enabled/:disabled are supported.  More pseudo classes will follow quickly now that this works.

        Reviewed by Tim Hatcher

        Added scrollbars/disabled-scrollbar.html

        * css/CSSStyleSelector.cpp:
        (WebCore::CSSStyleSelector::SelectorChecker::checkSelector):
        (WebCore::CSSStyleSelector::SelectorChecker::checkOneSelector):
        (WebCore::CSSStyleSelector::SelectorChecker::checkScrollbarPseudoClass):
        * css/CSSStyleSelector.h:
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::getPseudoStyle):
        * rendering/RenderObject.h:
        * rendering/RenderScrollbar.cpp:
        (WebCore::RenderScrollbar::setEnabled):
        (WebCore::RenderScrollbar::scrollbarForStyleResolve):
        (WebCore::RenderScrollbar::getScrollbarPseudoStyle):
        (WebCore::RenderScrollbar::paintPart):
        * rendering/RenderScrollbar.h:

LayoutTests:

2008-10-09  David Hyatt  <hyatt@apple.com>

        Add test case for disabled scrollbars.

        Reviewed by Tim Hatcher

        * platform/mac/scrollbars/disabled-scrollbar-expected.checksum: Added.
        * platform/mac/scrollbars/disabled-scrollbar-expected.png: Added.
        * platform/mac/scrollbars/disabled-scrollbar-expected.txt: Added.
        * scrollbars/disabled-scrollbar.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37472 268f45cc-cd09-0410-ab3c-d52691b4dbfc