🐞 Add innocuous handler to fix iOS 10 scroll

Ref #457
metafizzy · Oct 18, 2016 · 9600348 · 9600348
1 parent a446a34
commit 9600348
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/js/drag.js b/js/drag.js
@@ -51,11 +51,20 @@ utils.extend( proto, Unidragger.prototype );
 
 // --------------------------  -------------------------- //
 
+var isTouch = 'createTouch' in document;
+var isTouchmoveScrollCanceled = false;
+
 proto._createDrag = function() {
   this.on( 'activate', this.bindDrag );
   this.on( 'uiChange', this._uiChangeDrag );
   this.on( 'childUIPointerDown', this._childUIPointerDownDrag );
   this.on( 'deactivate', this.unbindDrag );
+  // HACK - add seemingly innocuous handler to fix iOS 10 scroll behavior
+  // #457, RubaXa/Sortable#973
+  if ( isTouch && !isTouchmoveScrollCanceled ) {
+    window.addEventListener( 'touchmove', function() {});
+    isTouchmoveScrollCanceled = true;
+  }
 };
 
 proto.bindDrag = function() {