Changeset 3645 for TI05-delivery/ows_framework

Timestamp:

18/03/08 14:12:19 (12 years ago)

Author:

cbyrom

Message:

Add in basic GetLegend? support (NB, this isn't displaying anything atm...).

Also, add the ddc-control.js - this should've been added earlier but must have
failed or not picked up by eclipse.

Location:

TI05-delivery/ows_framework/trunk/ows_server/ows_server/public/js

Files:

• ddc-control.js (added)
• vis-app.js (modified) (3 diffs)

TI05-delivery/ows_framework/trunk/ows_server/ows_server/public/js/vis-app.js

@@ -110 +110 @@
                                 // extract the required info and load the map
                                 // NB, these values are set in the wmscControl._updateLeafLayer() method
+                                // NB, for transparancy to be fully supported, the format must be gif
+                                // - png is only partially supported and jpg not at all
                                 endpoint = child.getAttribute("wmcURL");
                                 title = child.getAttribute("title");
@@ -136 +138 @@
                 this.map.addLayer(this.boxesLayer);
                 
-//              this.loadLegend();
+                this.loadLegend();
     },  
 
@@ -147 +149 @@
     loadLegend: function() 
     {
-                function setLegend(response) 
-                {
-                $('legend').innerHTML = response.responseText;
-                }
-
-                if (this.layerControl.wmsEndpoint == null) 
+                function setLegend(xhr) 
+                {
+                        alert('bloo');
+                $('legend').innerHTML = xhr.responseXML.documentElement;
+                }
+
+                function noLegend(response) 
+                {
+                alert('blah');
+                }
+
+                // set the legend to be the topmost layer that has been picked
+                // NB, there is a boxes layer and coastline layer on top of this
+                // - also, there is a base map - so ignore legend if only three layers
+                var layerNo = this.map.layers.length;
+                if (layerNo < 4)
                 {
                 $('legend').innerHTML = '';
+                        return;
+                }
+                        
+                var topLayer = this.map.layers[layerNo - 3];
+                
+                if (topLayer.url == null) 
+                {
+                $('legend').innerHTML = '';
                 }
                 else 
                 {
-                var url = this.visLayer.getFullRequestString({
+                var url = topLayer.getFullRequestString({
                                 REQUEST: 'GetLegend',
                                 FORMAT: 'text/html'
                 });
-                OpenLayers.loadURL(url, '', this, setLegend);
+                
+                new Ajax.Request(url, 
+                                {parameters: {},
+                        method: "get",
+                        onSuccess: setLegend.bindAsEventListener(this)
+                                });
+                
+                //OpenLayers.loadURL(url, '', this, setLegend, noLegend);
                 }
     },