"MousePosition control should support mouseOut event", r=bartvde,

initial patch cmoullet, (Closes #2404)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@10127 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/MousePosition.js

@@ -52,6 +52,13 @@ OpenLayers.Control.MousePosition = OpenLayers.Class(OpenLayers.Control, {
      * {Integer} 
      */
     granularity: 10,
+
+    /**
+     * APIProperty: emptyString 
+     * {String} Set this to some value to set when the mouse is outside the
+     *     map.
+     */
+    emptyString: null,
     
     /** 
      * Property: lastXy
@@ -111,7 +118,8 @@ OpenLayers.Control.MousePosition = OpenLayers.Class(OpenLayers.Control, {
         var lonLat;
 
         if (evt == null) {
-            lonLat = new OpenLayers.LonLat(0, 0);
+            this.reset();
+            return;
         } else {
             if (this.lastXy == null ||
                 Math.abs(evt.xy.x - this.lastXy.x) > this.granularity ||
@@ -141,6 +149,15 @@ OpenLayers.Control.MousePosition = OpenLayers.Class(OpenLayers.Control, {
         }
     },
 
+    /**
+     * Method: reset
+     */
+    reset: function(evt) {
+        if (this.emptyString != null) {
+            this.element.innerHTML = this.emptyString;
+        }
+    },
+
     /**
      * Method: formatOutput
      * Override to provide custom display output
@@ -165,6 +182,7 @@ OpenLayers.Control.MousePosition = OpenLayers.Class(OpenLayers.Control, {
     setMap: function() {
         OpenLayers.Control.prototype.setMap.apply(this, arguments);
         this.map.events.register( 'mousemove', this, this.redraw);
+        this.map.events.register( 'mouseout', this, this.reset);
     },     
 
     CLASS_NAME: "OpenLayers.Control.MousePosition"