[OpenLayers-Dev] mouse wheel on popups

[Erik Uzureau]

Yes, this is something we definitely have to deal with. I am going to
try to resolve as many of these issues as possible today in my OL day.
Hopefully it works out.

at any rate, I've added the comment to the  [now very long] ticket

http://trac.openlayers.org/ticket/926#comment:30

erik

On 2/27/08, Tim Schaub <tschaub at openplans.org> wrote:
> Hey-
>
> Pierre, just a quick note here to say I totally agree.  I think the
> mouse wheel situation is a critical one to fix. (And the solution should
> not be specific to popups.)  Just haven't had the time to get in to it
> yet.
>
> Tim
>
> Pierre GIRAUD wrote:
> > Hello Erik, Tim and all,
> >
> > I would first like to congratulate Erik for his great and useful job
> > on the new popups. It sounds like it's almost ready to go in.
> > However, there are still some issues to fix.
> >
> > The most important for me (and a customer I work on this for) is the
> > ability to scroll the popup content without any interaction with the
> > map (avoid zoom in/out).
> >
> > I first wondered I we were able to prevent map from zooming when
> > wheeling on controls UI's (LayerSwitcher, panZoomBar) and proposed a
> > simple patch to fix this. [1]
> >
> > Back to the popup specific issue, my first thought was to observe
> > mousewheel events and simply stop event propagation. But, the
> > MouseWheel has already observers for those events and as they are
> > registered before, they are informed first and the map is zoomed
> > in/out. We could imagine dealing with some sort of priority but I
> > didn't find a way to do it.
> > Should we consider having a proper registry for mousewheel events and
> > not simply calling observe() ?
> >
> > We could also imagine temporarily disabling the MouseWheel handler.
> > Tim, are you confident with the feature proposed by sbenthall [2] ?
> > How could we implement this ? Do we have to detect that the mouse
> > cursor entered and leaved the popup to call enable/disable the wheel
> > handler ?
> >
> > Any help on that would be appreciated.
> >
> > Regards,
> > Pierre
> >
> >
> > [1] http://trac.openlayers.org/ticket/1382
> > [2] http://trac.openlayers.org/ticket/1339
> >
> > !DSPAM:4033,47c29af0271455332866982!
> >
>
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