[Users] GeoExt.Action (Button) to show/hide Layer

[gbrun]

You try to use a GeoExt action. For this, you need to define an OpenLayers  
control. That's why you received this 'undefined' message.

Instead of GeoExt action, try to use a classic Ext button and it should  
work (only if you don't have any OpenLayers control). For the "checked"  
problem, I think you can use "pressed" instead.

Geoffrey


On Thu, 08 Sep 2011 12:05:44 +0200, Kai Volland <kaivolland at web.de> wrote:

> Hi Users,
>
> i've some issues with using a Button to show/hide a Layer in my map.
>
> 1. "checked:true" doesn't work
> 2. I get an error whne first check and uncheck the button:
>              this.control is undefined
>                   this.control.activate();
>              this.control is undefined
>                   this.control.deactivate();
>
> 3. Afterwards the button seems to work, but unchecking it doesn't affect
> the Layer (it stays visible).
>
> CODE:
>      var action1 = new GeoExt.Action({
>          text: 'Sites',
>          map: map,
>          tooltip: 'NESPOS - SITES',
>          enableToggle: true,
>          handler: function(toggled){
>              if (toggled) {
>                  nespos.setVisibility(true);
>              } else {
>                  nespos.setVisibility(false);
>              }
>          },
>          checked: true
>      });
>      actions["Sites"] = action1;
>      toolbarItems.push(action1);
>      toolbarItems.push("-");
>
>
> Kind regards,
>
> Kai


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