NavigationHistory - move the code for getting the current state from an anonymous function to a method of the class, r=bartvde (closes #2377)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9867 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/NavigationHistory.js

@@ -126,12 +126,7 @@ OpenLayers.Control.NavigationHistory = OpenLayers.Class(OpenLayers.Control, {
         OpenLayers.Control.prototype.initialize.apply(this, [options]);
         
         this.registry = OpenLayers.Util.extend({
-            "moveend": function() {
-                return {
-                    center: this.map.getCenter(),
-                    resolution: this.map.getResolution()                
-                };
-            }
+            "moveend": this.getState
         }, this.registry);
         
         this.clear();
@@ -288,6 +283,20 @@ OpenLayers.Control.NavigationHistory = OpenLayers.Class(OpenLayers.Control, {
         this.nextStack = [];
     },
 
+    /**
+     * Method: getState
+     * Get the current state and return it.
+     *
+     * Returns:
+     * {Object} An object representing the current state.
+     */
+    getState: function() {
+        return {
+            center: this.map.getCenter(),
+            resolution: this.map.getResolution()
+        };
+    },
+
     /**
      * Method: restore
      * Update the state with the given object.