[Webkit-unassigned] [Bug 92050] New: Focus navigation of <summary> element should not be ruled by Shadow DOM spec.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=92050

           Summary: Focus navigation of <summary> element should not be
                    ruled by Shadow DOM spec.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: hayato at chromium.org
                CC: dglazkov at chromium.org, dominicc at chromium.org,
                    morrita at google.com, shinyak at chromium.org,
                    tasak at google.com
            Blocks: 78585


In current WebKit inplementation,  a <summary> element is distributed into an insertion point of shadow DOM subtree inside of <details> element.
Therefore, it follows a rule defined in the Shadow DOM spec: http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#focus-navigation.

That's not a desired behavior. Focus navigation for <summary> elements should follow the usual focus navigation rule of outer document, not Shadow DOM spec.
That means that tabindex attribute of <summary> element should be used for an outer document, not for an inside of Shadow DOM subtree.

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