Fix ka-Map's clone method, to fix bug with Overview Map reported by Stephen

Woodbridge. (Thx Stephen.)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@3087 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/KaMap.js

@@ -145,6 +145,36 @@ OpenLayers.Layer.KaMap.prototype =
         this.spiralTileLoad();
 
     },
+    
+    /**
+     * @param {Object} obj
+     * 
+     * @returns An exact clone of this OpenLayers.Layer.Grid
+     * @type OpenLayers.Layer.Grid
+     */
+    clone: function (obj) {
+        
+        if (obj == null) {
+            obj = new OpenLayers.Layer.KaMap(this.name,
+                                            this.url,
+                                            this.params,
+                                            this.options);
+        }
+
+        //get all additions from superclasses
+        obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]);
+
+        // copy/set any non-init, non-simple values here
+        if (this.tileSize != null) {
+            obj.tileSize = this.tileSize.clone();
+        }
+        
+        // we do not want to copy reference to grid, so we make a new array
+        obj.grid = new Array();
+
+        return obj;
+    },    
+
 
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Layer.KaMap"