[OpenLayers-Users] How to prevent overview map update while overview control is minimized

[Franz Buchinger]

Hi,

as a performance improvement I want to prevent the overview map from
updating when it is closed. My approach is to redefine the
isSuitableOverview method when the control is closed or opened. However,
this doesn't work as expected, as no overview control at all is shown.

Any ideas?

OpenLayers.Control.MyOverviewMap =
OpenLayers.Class(OpenLayers.Control.OverviewMap, {

    //refresh overview map with every map request
    isSuitableOverview: function() {
         return true;
    },
   minimizeControl: function (){
        //do not update overview map when it is minimized
        this.isSuitableOverview = function (){
            return true;
        }
    },
    maximizeControl: function (){
        //update overview map when it is maximized
        this.isSuitableOverview = function (){
            return false;
        }
    });

Franz
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