Move some touch logic to the handler base class.

lib/OpenLayers/Handler/Drag.js

@@ -50,13 +50,6 @@ OpenLayers.Handler.Drag = OpenLayers.Class(OpenLayers.Handler, {
      */
     dragging: false,
 
-    /**
-     * Property: touch
-     * {Boolean} When a touchstart event is fired, touch will be true and all
-     *     mouse related listeners will do nothing.
-     */
-    touch: false,
-
     /** 
      * Property: last
      * {<OpenLayers.Pixel>} The last pixel location of the drag.
@@ -344,17 +337,7 @@ OpenLayers.Handler.Drag = OpenLayers.Class(OpenLayers.Handler, {
      * {Boolean} Let the event propagate.
      */
     touchstart: function(evt) {
-        if (!this.touch) {
-            this.touch = true;
-            // unregister mouse listeners
-            this.map.events.un({
-                mousedown: this.mousedown,
-                mouseup: this.mouseup,
-                mousemove: this.mousemove,
-                click: this.click,
-                scope: this
-            });
-        }
+        this.startTouch();
         return this.dragstart(evt);
     },
 
@@ -508,7 +491,6 @@ OpenLayers.Handler.Drag = OpenLayers.Class(OpenLayers.Handler, {
     deactivate: function() {
         var deactivated = false;
         if(OpenLayers.Handler.prototype.deactivate.apply(this, arguments)) {
-            this.touch = false;
             this.started = false;
             this.dragging = false;
             this.start = null;