Ticket #750: Openlayers.Layer.Markers.geExtent.patch

Markers.js

@@ -128 +128 @@
-        }
-    },
-    
+    /** Calculates using px-> lonlat translation functions on tl and br 
+     *   corners of viewport
+     * 
+     * @returns A Bounds object which represents the lon/lat bounds of the 
+     *          current viewPort.
+     * @type OpenLayers.Bounds
+     */
+    getExtent: function () {
+
+        var extent = null;
+        
+        if ((this.markers != null) || (this.markers.length > 0)) {
+            var i=0;
+            var tl = new OpenLayers.LonLat(180, -90);
+            var br = new OpenLayers.LonLat(-180, 90);
+            while(this.markers.length > i) {
+                if (this.markers[i].lonlat.lon<tl.lon) tl.lon = this.markers[i].lonlat.lon;
+                if (this.markers[i].lonlat.lon>br.lon) br.lon = this.markers[i].lonlat.lon;
+                if (this.markers[i].lonlat.lat>tl.lat) tl.lat = this.markers[i].lonlat.lat;
+                if (this.markers[i].lonlat.lat<br.lat) br.lat = this.markers[i].lonlat.lat;
+                i++;
+            }
+
+            extent = new OpenLayers.Bounds(tl.lon, br.lat, br.lon, tl.lat);
+        }
+        return extent;
+    },
+    
-    /** @final @type String */
-    CLASS_NAME: "OpenLayers.Layer.Markers"
-});