Since TPAC is less than a month away, I don't understand why we can't wait for that discussion. I do support the idea in general, and I plan to be at TPAC and will advocate for it.
I understand that sometimes we need to move ahead of the spec. If there's a reason not to wait a few extra weeks in this case, then please at least use a prefix. Cheers, Maciej On Sep 30, 2012, at 6:32 PM, Kentaro Hara <hara...@chromium.org> wrote: > TL;DR: Would it be OK to implement constructors for DOM4 Events in > WebKit without waiting for the spec? > > > == Background == > > Events should have constructors. 'new XXXEvent()' is much easier than > 'e = document.createEvent(...); e.initXXXEvent(_a_lot_of_arguments_)'. > We have already implemented constructors for a bunch of Events such as > Event, CustomEvent, ProgressEvent, etc [5]. However, we have not yet > implemented constructors for DOM4 Events (i.e. UIEvent, MouseEvent, > KeyboardEvent, WheelEvent, TextEvent, CompositionEvent) because they > are not yet speced. > > Recently PointerEvent was speced with [Constructor] [2]. Considering > that PointerEvent inherits MouseEvent, now we want to support > [Constructor] on MouseEvent > too. In terms of implementation, it is possible to implement > [Constructor] on PointerEvent without implementing [Constructor] on > MouseEvent. However, implementing [Constructor] on both PointerEvent > and MouseEvent would be best. > > == Rationale for implementing constructors for DOM4 Events == > > I have been discussing this topic for one year, in www-dom@ [4] and a > www.w3.org bug [3]. It looks like there is a consensus on introducing > constructors for DOM4 Events. However, the spec is still a draft [1] > and the www.w3.org bug [3] is marked as LATER. Last week I discussed > the timeline of the spec with Jacob Rossi (a.k.a. a spec author of > PointerEvent and DOM4 Events). According to him: > > - Their primary focus is on finishing DOM3 Events first. > - With DOM3 Events in Candidate Recommendation, they are going to > start working on the DOM4 Events. They will discuss it in TPAC. > - They will introduce constructors to DOM4 Events. > > In summary, constructors for DOM4 Events are going to be speced, but > it will take time. So I would like to implement them in WebKit a bit > ahead of the spec (and thus implement PointerEvent constructors too). > If you have any concern, please let me know. > > > == References == > [1] The spec draft by Jacob Rossi: > http://html5labs.interoperabilitybridges.com/dom4events/ > > [2] The spec of Pointer Events: > http://www.w3.org/Submission/pointer-events/ > > [3] www.w3.org bug: > https://www.w3.org/Bugs/Public/show_bug.cgi?id=14051 > > [4] Discussion on www-dom@: > http://lists.w3.org/Archives/Public/www-dom/2011OctDec/0081.html > http://lists.w3.org/Archives/Public/www-dom/2012JanMar/0025.html > > [5] WebKit bug: > https://bugs.webkit.org/show_bug.cgi?id=67824 > > > -- > Kentaro Hara, Tokyo, Japan (http://haraken.info) > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > http://lists.webkit.org/mailman/listinfo/webkit-dev _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo/webkit-dev