[Webkit-unassigned] [Bug 48821] "elements" for form and fieldsset don't conform to the HTML5 spec

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48821





--- Comment #8 from Kent Tamura <tkent at chromium.org>  2010-11-16 23:19:49 PST ---
(In reply to comment #7)
> Kent-san,
> 
> (In reply to comment #6)
> > I think it's doable.  Did you try it and have problems?
> 
> I tried introducing the interface class, say FormAssociatedElementInterface, and changed the argument of checkValidity from Vector<RefPtr<HTMLFormControlElement> to Vector<RefPtr<FormAssociatedElementInterface>. Since RefPtr requires ref() and deref(), I needed to define these functions, but they are also defined in EventTarget class, which is a superclass of HTMLElement subclasses. I think, in this case, virtual inheritance is needed to make both HTMLFormControlElement and HTMLObjectElement to be a subclass of not only HTMLElement but also FormAssociatedElementInterface. I can't come up with a workaround to avoid it.

Could you show me the patch please?
WebCore::Node inherits EventTarget, TreeShared, and ScriptWrappable.  Both of EventTarget and TreeShared have ref() and deref().

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