fix up issue with Sencha Touch example not handling double tap to zoom in, r=elemoine (closes #3079)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11226 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Handler/Click.js

@@ -96,6 +96,12 @@ OpenLayers.Handler.Click = OpenLayers.Class(OpenLayers.Handler, {
      */
     last: null,
 
+    /**
+     * Property: touch
+     * {Boolean} Are we on a touch enabled device? Default is false.
+     */
+    touch: false,
+
     /**
      * Property: rightclickTimerId
      * {Number} The id of the right mouse timeout waiting to clear the 
@@ -148,6 +154,7 @@ OpenLayers.Handler.Click = OpenLayers.Class(OpenLayers.Handler, {
      * {Boolean} Continue propagating this event.
      */
     touchstart: function(evt) {
+        this.touch = true;
         this.down = evt;
         this.last = null;
         return true;
@@ -279,6 +286,10 @@ OpenLayers.Handler.Click = OpenLayers.Class(OpenLayers.Handler, {
      * {Boolean} Continue propagating this event.
      */
     click: function(evt) {
+        // Sencha Touch emulates click events, see ticket 3079 for more info
+        if (this.touch === true && evt.type === "click") {
+            return !this.stopSingle;
+        }
         if(this.passesTolerance(evt)) {
             if(this.timerId != null) {
                 // already received a click