Hi Adrian, Hi Alexandre,
thank you for your hints, nevertheless I didn`t get it.
With "my_layer.visibility" I will get easily the status (true/false),
but the problem I have is that I don`t know how to get the function
setVisibility() (that is called after activatin/deactivating a layer in
Control.LayerSwitcher).
I mean:
I turn the layer on/off and the function obviously is called.
But how can I do a request on that?
Something like:
if (setVisibility()) {
alert ("change");
alert (my_layer.visibility);
}
of
If this.map.events.triggerEvent("visibilitychanged")) {
...
....
}
Well, I will try on.....
Best regards, Kai
-------- Original-Nachricht --------
> Datum: Fri, 14 Aug 2009 15:37:30 +0300
> Von: Adrian Popa <[email protected]>
> An: Kai Behncke <[email protected]>
> CC: [email protected]
> Betreff: Re: [OpenLayers-Users] Starting function if layerstatus is changed
> Hello Kai,
>
> Not sure if this is what you're looking for, but I registered my
> function to run when the layer changes visibility (is toggled on/off):
>
> markers.events.on({ "featureselected": onMarkerSelect,
> "featureunselected": onMarkerUnselect, *"visibilitychanged":
> onMarkerToggle* });
>
> markers is a Vector layer, but the event should be available for every
> layer. You can check in your function to see if the layer has been
> toggled off or on by looking at markers.visibility:
>
> *function onMarkerToggle(event) {
> //do something if visibility becomes true
> if(markers.visibility == true){
> alert("This layer just turned visible!");
> }
> }
> *
> Regards,
> Adrian
> Kai Behncke wrote:
> > Dear users,
> >
> >
> >
> >
> > I would like to start a function if the layer is on/off.
> >
> > I tried e.g.
> >
> >
> > if (this.map.events.triggerEvent("changelayer")){
> > alert ("here we go");
> > }
> >
> >
> > and
> >
> > if (my_layer.display()){
> >
> > alert ("here we go");
> > }
> >
> >
> > ...but so far without success.
> > Can anybody help please?
> >
> > Thank you very much, Kai
> >
>
>
> --
> ---
> Adrian Popa
> NOC Division
> Network Engineer
> Divizia Centrul National de Operare Retea
> Departament Transport IP & Metro
> Compartiment IP Core & Backbone
> Phone: +40 21 400 3099
>
--
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