#475: * merge 'dev' branch

Sortable.js

@@ -25,6 +25,7 @@
 	"use strict";
 
 	var dragEl,
+		parentEl,
 		ghostEl,
 		cloneEl,
 		rootEl,
@@ -303,6 +304,7 @@
 
 				rootEl = el;
 				dragEl = target;
+				parentEl = target.parentNode;
 				nextEl = dragEl.nextSibling;
 				activeGroup = options.group;
 
@@ -706,19 +708,20 @@
 					_disableDraggable(dragEl);
 					_toggleClass(dragEl, this.options.ghostClass, false);
 
-					if (rootEl !== dragEl.parentNode) {
+					if (rootEl !== parentEl) {
 						newIndex = _index(dragEl);
-
+						if (newIndex != -1) {
 							// drag from one list and drop into another
-						_dispatchEvent(null, dragEl.parentNode, 'sort', dragEl, rootEl, oldIndex, newIndex);
+							_dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
 							_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
 
 							// Add event
-						_dispatchEvent(null, dragEl.parentNode, 'add', dragEl, rootEl, oldIndex, newIndex);
+							_dispatchEvent(null, parentEl, 'add', dragEl, rootEl, oldIndex, newIndex);
 
 							// Remove event
 							_dispatchEvent(this, rootEl, 'remove', dragEl, rootEl, oldIndex, newIndex);
 						}
+					}
 					else {
 						// Remove clone
 						cloneEl && cloneEl.parentNode.removeChild(cloneEl);
@@ -726,12 +729,13 @@
 						if (dragEl.nextSibling !== nextEl) {
 							// Get the index of the dragged element within its parent
 							newIndex = _index(dragEl);
-
+							if (newIndex != -1) {
 								// drag & drop within the same list
 								_dispatchEvent(this, rootEl, 'update', dragEl, rootEl, oldIndex, newIndex);
 								_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
 							}
 						}
+					}
 
 					if (Sortable.active) {
 						// Drag end event
@@ -745,6 +749,7 @@
 				// Nulling
 				rootEl =
 				dragEl =
+				parentEl =
 				ghostEl =
 				nextEl =
 				cloneEl =
@@ -1092,6 +1097,9 @@
 	 * @private
 	 */
 	function _index(/**HTMLElement*/el) {
+		if (!el || !el.parentNode) {
+			return -1;
+		}
 		var index = 0;
 		while (el && (el = el.previousElementSibling)) {
 			if (el.nodeName.toUpperCase() !== 'TEMPLATE') {
@@ -1152,9 +1160,6 @@
 	};
 
 
-	Sortable.version = '1.2.2';
-
-
 	/**
 	 * Create sortable instance
 	 * @param {HTMLElement}  el
@@ -1164,6 +1169,8 @@
 		return new Sortable(el, options);
 	};
 	
+
 	// Export
+	Sortable.version = '1.2.2';
 	return Sortable;
 });