[Users] How to disable a Treenode ?

[Robert Buckley]

Hi,

I want to disable treenode like in this webapp (http://www2.visdat.de/) look at "Freie Webdienste" which nicely disables treenodes after a certain resolution.

The relevant code is this....

"
map.events.register('zoomend', map, function (e) {
            if (map.getZoom() < minZoom) {
                map.zoomTo(minZoom)
            };
            if (map.getZoom() > maxZoom) {
                map.zoomTo(maxZoom)
            };            
            
            for (var k = 0; k < layerArray.length; k++) {
                var layerId = layerArray[k][8];
                if (layerTree.getNodeById(layerId)) {
                    if ((map.getResolution() >= layerArray[k][9] && map.getResolution() <= layerArray[k][10]) || (layerArray[k][9] == null && layerArray[k][10] == null)) {
                        layerTree.getNodeById(layerId).enable();
                    }
                    if (layerArray[k][9] != null && layerArray[k][10] != null) {
                        if (map.getResolution() <= layerArray[k][9] || map.getResolution() >= layerArray[k][10]) {
                            layerTree.getNodeById(layerId).disable();
                        }
                    }
                };
            }
            
            
"

In my Application I wanted to disable a treenode when the zoomlevel goes above 12, but although api docs (http://www.myext.cn/ext-3.2.1/docs/) say that a treenode has a disabled property, firebug says otherwise

According to the geoext docs (http://geoext.org/lib/GeoExt/widgets/tree/LayerNode.html)

"Configuration properties in addition to those listed for Ext.tree.TreeNode."


So I looked at the Ext.tree.TreeNod propertie and saw this...

disabled : Boolean
true to start the node disabled

So, I tried this...

map.events.on({
        "zoomend": function (e) {
            if (this.getZoom() > 12) {
            
                layer_1.setVisibility(true);
                layer_1.disabled="false";



            } else {
                layer_1.setVisibility(false);
                layer_1.disabled="true";
                
                var mapcenter = getMapCenter();
                

            }
        }
    });

and my console reports "has no method 'disable'"
The setVisibility(true); works ok, but this method isn´t even documented!

I am not a javaascript guru unfortunately, but I thought I could understand the docs...now i´m not too sure.

Thanks for any help,

Rob
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