[webkit-dev] Constructors for DOM4 Events
mjs at apple.com
Sun Sep 30 22:11:53 PDT 2012
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.
On Sep 30, 2012, at 6:32 PM, Kentaro Hara <haraken at 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 . 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] . 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@  and a
> www.w3.org bug . It looks like there is a consensus on introducing
> constructors for DOM4 Events. However, the spec is still a draft 
> and the www.w3.org bug  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 ==
>  The spec draft by Jacob Rossi:
>  The spec of Pointer Events:
>  www.w3.org bug:
>  Discussion on www-dom@:
>  WebKit bug:
> Kentaro Hara, Tokyo, Japan (http://haraken.info)
> webkit-dev mailing list
> webkit-dev at lists.webkit.org
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