[OpenLayers-Dev] OpenLayers. Control. LayerSwitcher

[Dom Lehr]

Thanks guys! I appriciate it!

On Thu, Nov 26, 2009 at 8:34 AM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
> Dom Lehr wrote:
>>
>> Hey Guys!
>>
>> I'm new to this list, but a big fan of OpenLayers! Needless to say,
>> I'm to a point where I need some help: Here is my problem:
>>
>> I got four layers on my map; Enabling and disabling them thru the
>> Control.LayerSwitcher works perfect. Tho, my layers depend on each
>> other, which means I have to select certain layers, if one is
>> selected. Example: If layer4 is selected, I also wanne have layer3, 2
>> and 1 selected. If layer3 is selected, I wanne have 2 and 1 selected.
>> Is there any way to achieve this?
>>
>
> layer4.events.on({
>   visibilitychanged: function() {
>       var vis = layer4.getVisibility();
>       layer3.setVisibility(vis);
>   }
> });
> layer3.events.on({
>   visibilitychanged: function() {
>       var vis = layer3.getVisibility();
>       layer2.setVisibility(vis);
>       layer1.setVisibility(vis);
>   }
> });
>
> Regards,
> Andreas.
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
>