On Thu, Jul 26, 2012 at 2:29 PM, Alexandru Chiculita <ach...@adobe.com>wrote:
> > On 25.07.2012, at 18:16, Alan Stearns wrote: > > > From: Adam Barth <aba...@webkit.org> > > Date: Wednesday, July 25, 2012 6:05 PM > > To: Sam Weinig <s...@webkit.org> > > Cc: Elliott Sprehn <espr...@google.com>, Alan Stearns > > <stea...@adobe.com>, Kentaro Hara <hara...@chromium.org>, > > "webkit-dev@lists.webkit.org" <webkit-dev@lists.webkit.org> > > Subject: Re: [webkit-dev] Multiple inheritance in the DOM > > > > On Wed, Jul 25, 2012 at 6:00 PM, Sam Weinig <s...@webkit.org> wrote: > > > > On Jul 25, 2012, at 5:53 PM, Elliott Sprehn <espr...@google.com> wrote: > > > >>>> It seems like this should really be a [NoInterfaceObject]. > >>>> That resolves the issue of multiple inheritance since you > >>>> can no longer do instanceof Region, and I'm not sure why > >>>> you'd ever want to do that anyway. > > > >>> I agree. > > > >> That doesn't solve the problem. > > > > But it's a good idea. I'll add it to the spec. > > I don't see any advantage in having the interface anyway, so why don't we > just it let be a separate object and add two helper methods instead. I can > only imagine that other browsers might have the same issue anyway. > > document.getRegionForElement(element) > -> where element can be both Element and CSSPseudoElement > -> this may return null in case of no region being associated, so there's > no need for instanceof tricks anymore. > > region.element > -> that can return either Element or CSSPseudoElement > > BTW, is there any base class shared across Element and CSSPseudoElement? > Greping for CSSPseudoElement in WebCore appears to return zero results. Discussing this issue with Sam in #webkit, we wondered whether another solution is to not implement the CSSOM for Regions. Is there are strong use case for having this CSSOM in the first place? Adam
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