[whatwg] hit regions: moving an element out of the shadow tree

[Rik Cabanier]

On Tue, Feb 4, 2014 at 9:13 AM, Ian Hickson <ian at hixie.ch> wrote:

> On Mon, 3 Feb 2014, Rik Cabanier wrote:
> >
> > The spec is currently silent what should happen when an element that is
> > associated with a hit region, is moved to another location in the
> > document, another document or deleted.
> >
> > This should result in removal of the hit region. Maybe this is defined
> > in the HTML spec?
>
> It results in the region no longer having a backing control (see the
> definition of "the control represented by a region"), but why would it
> remove the region? The region might be there for other reasons, e.g. it
> might have a cursor or ID specified, or the author might be using it to
> play a sound when the user tries to click on the space where the control
> used to be drawn, to indicate to the user that the control is gone.


Ok, link:
http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#the-control-represented-by-a-region

It's a bit weird that you can do "ctx.addHitRegion({});" :-)