agent.js in poltergeist-1.13.0

- old
+ new

@@ -95,11 +95,11 @@
   PoltergeistAgent.prototype.afterUpload = function(id) {
     return this.get(id).removeAttribute('_poltergeist_selected');
   };
 
   PoltergeistAgent.prototype.clearLocalStorage = function() {
-    return localStorage.clear();
+    return typeof localStorage !== "undefined" && localStorage !== null ? localStorage.clear() : void 0;
   };
 
   return PoltergeistAgent;
 
 })();
@@ -387,10 +387,12 @@
     rect = this.element.getBoundingClientRect();
     return rect.top >= 0 && rect.left >= 0 && rect.bottom <= window.innerHeight && rect.right <= window.innerWidth;
   };
 
   Node.prototype.isDisabled = function() {
-    return this.element.disabled || this.element.tagName === 'OPTION' && this.element.parentNode.disabled;
+    var xpath;
+    xpath = 'parent::optgroup[@disabled] | ancestor::select[@disabled] | parent::fieldset[@disabled] | ancestor::*[not(self::legend) or preceding-sibling::legend][parent::fieldset[@disabled]]';
+    return this.element.disabled || document.evaluate(xpath, this.element, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
   };
 
   Node.prototype.path = function() {
     var elements, selectors;
     elements = this.parentIds().reverse().map((function(_this) {