2007-05-06 Mitz Pettel <mitz@webkit.org>

2007-05-06  Mitz Pettel  <mitz@webkit.org>

        Reviewed by Hyatt.

        - fix http://bugs.webkit.org/show_bug.cgi?id=13557
          Crash when dragging selection over absolutely positioned generated content on block element

        Test: fast/css-generated-content/positioned-background-hit-test-crash.html

        * rendering/RenderLayer.cpp:
        (WebCore::RenderLayer::enclosingElement): Added. Factored out of hitTestLayer().
        (WebCore::RenderLayer::hitTestLayer): Implemented the fix for <rdar://problem/3552346>
        from r6106 to the self hit test as well, namely: return the enclosing element
        for generated positioned content.
        * rendering/RenderLayer.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@21276 268f45cc-cd09-0410-ab3c-d52691b4dbfc