[Webkit-unassigned] [Bug 31224] New: When using V8 engine to get style sheet from document.styleSheets by using name, it should return StyleSheet object instead of HTMLStyleElement

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=31224

           Summary: When using V8 engine to get style sheet from
                    document.styleSheets by using name, it should return
                    StyleSheet object instead of HTMLStyleElement
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://soren.qzone.qq.com/cgi-bin/soren/cgi_userinfo_s
                    earch?bSimple=0&ptlang=2052
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebCore JavaScript
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: johnnyding.webkit at gmail.com
                CC: dglazkov at chromium.org


In page
http://soren.qzone.qq.com/cgi-bin/soren/cgi_userinfo_search?bSimple=0&ptlang=2052,
it uses document.styleSheets["CssId"].rules to get style css rule list.

In safari, the page run well, but in Google Chrome, accessing
document.styleSheets["CssId"].rules got "undefined".

After investigation, Safari returns a [CSSStyleSheet] object when accessing
document.styleSheets["CssId"], so the "rules" can be gotten. Chrome returns a
[HTMLStyleElement] object when accessing document.styleSheets["CssId"], so the
"rules" can not be gotten.

I believe it's v8 binding's fault. See JS binding (JSStyleSheetListCustom.cpp,
line 60), it returns stylesheet instead of returning style element.

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