From: JJ Allaire <jj@rstudio.org>
Date: Wed, 13 Feb 2013 13:10:27 +0000 (-0500)
Subject: check window.ontouchstart != null (required for qtwebkit)
X-Git-Tag: 2.3.0~54^2
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=45825b61b7ac336dd57dd21380f1f5128dbe7609;p=reveal.js.git

check window.ontouchstart != null (required for qtwebkit)
---

diff --git a/js/reveal.js b/js/reveal.js
index fc5164d..5ed71c1 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -439,7 +439,7 @@ var Reveal = (function(){
 		}
 
 		if ( config.controls && dom.controls ) {
-			var actionEvent = 'ontouchstart' in window ? 'touchstart' : 'click';
+			var actionEvent = 'ontouchstart' in window && window.ontouchstart != null ? 'touchstart' : 'click';
 			dom.controlsLeft.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateLeftClicked, false ); } );
 			dom.controlsRight.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateRightClicked, false ); } );
 			dom.controlsUp.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateUpClicked, false ); } );