Ticket #2630: IntegerTextbox.patch

src/widget/IntegerTextbox.js

@@ -52 +52 @@
 
                 isValid: function(){
                         // summary: Over-ride for integer validation
+                        if(!this.isMissing()){
+                                if(this.textbox.value == ""){
+                                        return true;
+                                }       
+                        }
                         return dojo.validate.isInteger(this.textbox.value, this.flags);
                 },
                 isInRange: function(){