From 21b37254735d16a05d61b84ecbc74acf946fa622 Mon Sep 17 00:00:00 2001
From: Brett Mason <brettsmason@gmail.com>
Date: Thu, 17 Nov 2016 08:41:44 +0000
Subject: [PATCH] Add _stopScrolling function to fix iOS issue.

---
 js/foundation.offcanvas.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/js/foundation.offcanvas.js b/js/foundation.offcanvas.js
index c61cc4887..08347c6b5 100644
--- a/js/foundation.offcanvas.js
+++ b/js/foundation.offcanvas.js
@@ -146,6 +146,16 @@ class OffCanvas {
     }
   }
 
+  /**
+   * Stops scrolling of the body when offcanvas is open on mobile Safari and other troublesome browsers.
+   * @private
+   */
+  _stopScrolling(event) {
+  	event.preventDefault();
+  	event.stopPropagation();
+  	return false;
+  }
+
   /**
    * Opens the off-canvas menu.
    * @function
@@ -177,6 +187,7 @@ class OffCanvas {
 
     // If we have an overlay lets make it visible.
     if (this.options.contentOverlay) {
+    	$('body').on('touchmove', this._stopScrolling);
       this.$overlay.addClass('is-visible');
     }
 
@@ -247,6 +258,7 @@ class OffCanvas {
 
     // Remove `is-visible` class from overlay.
     if (this.options.contentOverlay) {
+    	$('body').off('touchmove', this._stopScrolling);
       this.$overlay.removeClass('is-visible');
     }
 
-- 
2.47.2