Make it so the measurepartial event is triggered only if measure isn't coming soon. This keeps you from having to do a quadruple click to finish in IE when a reflow is triggered by the measurepartial listener. r=crschmidt (closes #2037)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9263 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/Measure.js

@@ -76,6 +76,23 @@ OpenLayers.Control.Measure = OpenLayers.Class(OpenLayers.Control, {
         metric: ['km', 'm']
     },
 
+    /**
+     * Property: delay
+     * {Number} Number of milliseconds between clicks before the event is
+     *     considered a double-click.  The "measurepartial" event will not
+     *     be triggered if the sketch is completed within this time.  This
+     *     is required for IE where creating a browser reflow (if a listener
+     *     is modifying the DOM by displaying the measurement values) messes
+     *     with the dblclick listener in the sketch handler.
+     */
+    partialDelay: 300,
+
+    /**
+     * Property: delayedTrigger
+     * {Number} Timeout id of trigger for measurepartial.
+     */
+    delayedTrigger: null,
+    
     /**
      * APIProperty: persist
      * {Boolean} Keep the temporary measurement sketch drawn after the
@@ -147,6 +164,9 @@ OpenLayers.Control.Measure = OpenLayers.Class(OpenLayers.Control, {
      * geometry - {<OpenLayers.Geometry>}
      */
     measureComplete: function(geometry) {
+        if(this.delayedTrigger) {
+            window.clearTimeout(this.delayedTrigger);
+        }
         this.measure(geometry, "measure");
     },
     
@@ -159,7 +179,12 @@ OpenLayers.Control.Measure = OpenLayers.Class(OpenLayers.Control, {
      * geometry - {<OpenLayers.Geometry>} The sketch geometry.
      */
     measurePartial: function(point, geometry) {
-        this.measure(geometry, "measurepartial");
+        this.delayedTrigger = window.setTimeout(
+            OpenLayers.Function.bind(function() {
+                this.measure(geometry, "measurepartial");
+            }, this),
+            this.partialDelay
+        );
     },
 
     /**