[Users] Tooltip using Param for layers in a GeoExt.tree.LayerNode

[Andrew Stewart]

I am trying to display the minscale/maxscale of a specific layer as a tooltip when the user hoves over the legend item in the LayerNode. With the below code I am getting the tooltip properly but only on the very root of the tree item and not it's children. Is there anyway to use the param variable so that I can put these tooltips on the childnodes instead.. As some of the min/max scales are different. I tried to use the layer.params but could not get it working. Appreciate any advice!


        //AOIs layerList
        layerList_AOIs = new GeoExt.tree.LayerNode({
        "layer": layer_AOIs,
        "isLeaf": true,
        "preloadChildren": true,
        "checked": false,
        "enableDD": true,
        "cls": "rootnode",
        "qtip": layer_AOIs.maxScale + ':' + layer_AOIs.minScale, //this works fine but need it for child nodes instead
        "singleClickExpand": true,
        "listeners":
        {
            'checkchange' :  function(node, checked)
                {
                    // If a parent node is unchecked, uncheck all the children
                    if (node.getUI().isChecked()) {
                    node.expand();
                    }
                    if (!node.getUI().isChecked()) {
                    node.collapse();
                    }
                },
             'load' : function(e) {
             if (bool_aois == false)
                {
                    //change icon of childNodes to GetLegendGraphic from WMS + node text attribute
                    var count = (e.childNodes.length -1);
                    while (count >= 0)
                        {
                            var label = e.childNodes[count].text;
                            var fixed_label = label.replace(/_/g,' ');
                            e.childNodes[count].setText("<img src='http://localhost/WebServices/Request.aspx?request=GetLegendGraphic&version=1.1.1&format=image/png&style=&layer="+label + "'/>" + ' ' +fixed_label);
                            count -=1;
                        }
                    bool_aois = true;
                }
             else
             {
                //do nothing
             }
             }
  },
        "loader": {
            "param": "LAYERS"
        }
        });

And my actual layer is declared like so -

                //Areas of Interest Group
         var layer_AOIs = new OpenLayers.Layer.WMS("Areas of Interest", "http://localhost/WebServices/Request.aspx",
                {
                     layers: ['Community_Shelter', 'Hotel_Motel', 'Library', 'Museum', 'Theatre', 'Place_of_Worship', 'Parking', 'City_Facility', 'Recreation', 'School_Age_Program', 'School' , 'Major_Commercial_Centre' , 'Hospital' , 'Police_Station' , 'Fire_Hall' , 'Attraction'],
                     VERSION: "1.1.1",
                     transparent: true
                    },
                    { isBaseLayer: false,
                      singleTile: true,
                      visibility: false,
                      buffer: 1,
                      ratio: 1
                    }
                );





-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.geoext.org/pipermail/users/attachments/20101220/22ef3f06/attachment.htm