Merge pull request #1266 from noelheesen/master

Extend scrollCustomFn

README.md

@@ -98,10 +98,10 @@ var sortable = new Sortable(el, {
 
 	fallbackClass: "sortable-fallback",  // Class name for the cloned DOM Element when using forceFallback
 	fallbackOnBody: false,  // Appends the cloned DOM Element into the Document's Body
-	fallbackTolerance: 0, // Specify in pixels how far the mouse should move before it's considered as a drag.        
-	
+	fallbackTolerance: 0, // Specify in pixels how far the mouse should move before it's considered as a drag.
+
 	scroll: true, // or HTMLElement
-	scrollFn: function(offsetX, offsetY, originalEvent) { ... }, // if you have custom scrollbar scrollFn may be used for autoscrolling
+	scrollFn: function(offsetX, offsetY, originalEvent, touchEvt, hoverTargetEl) { ... }, // if you have custom scrollbar scrollFn may be used for autoscrolling
 	scrollSensitivity: 30, // px, how near the mouse must be to an edge to start scrolling.
 	scrollSpeed: 10, // px
 
@@ -163,7 +163,7 @@ var sortable = new Sortable(el, {
 		originalEvent.clientY; // mouse position
 		// return false; — for cancel
 	},
-	
+
 	// Called when creating a clone of element
 	onClone: function (/**Event*/evt) {
 		var origEl = evt.item;
@@ -347,7 +347,7 @@ Demo: http://jsbin.com/yacuqib/edit?html,css,js,output
 Emulates the native drag threshold. Specify in pixels how far the mouse should move before it's considered as a drag.
 Useful if the items are also clickable like in a list of links.
 
-When the user clicks inside a sortable element, it's not uncommon for your hand to move a little between the time you press and the time you release.  
+When the user clicks inside a sortable element, it's not uncommon for your hand to move a little between the time you press and the time you release.
 Dragging only starts if you move the pointer past a certain tolerance, so that you don't accidentally start dragging every time you click.
 
 3 to 5 are probably good values.

Sortable.js

@@ -167,7 +167,9 @@
 							scrollOffsetX = vx ? vx * speed : 0;
 
 							if ('function' === typeof(scrollCustomFn)) {
-								return scrollCustomFn.call(_this, scrollOffsetX, scrollOffsetY, evt);
+								if (scrollCustomFn.call(_this, scrollOffsetX, scrollOffsetY, evt, touchEvt, el) !== 'continue') {
+									return;
+								}
 							}
 
 							if (el === win) {
@@ -262,7 +264,7 @@
 			disabled: false,
 			store: null,
 			handle: null,
-			scroll: true,
+      scroll: true,
 			scrollSensitivity: 30,
 			scrollSpeed: 10,
 			draggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',