2

I have an OpenaLayers/gxp application. I have base and overlay layers groups. I want to show some overlay layers when select base layer. For example when I choose BaseLayer1 I want to show OverlayLayer1 and OverlayLayer2 automatically.

I seek something in gxp but can't find anything interesting in class gxp.plugins.LayerTree. So I think only OpenLayers can help me. Is it possible to show layers when I choose another layer?

3

You should listen to the BaseLayer's visibilitychanged event, and then change the visibility of your OverLay layers

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