From 9136141cf700599f019a0f894058a76ac52492f0 Mon Sep 17 00:00:00 2001
From: jos <wjosdejong@gmail.com>
Date: Wed, 20 Jan 2016 15:28:42 +0100
Subject: [PATCH] Fixed #1584: Navigation buttons broken

---
 HISTORY.md        |  3 ++-
 lib/hammerUtil.js | 23 ++---------------------
 2 files changed, 4 insertions(+), 22 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index d13c55f3..61558462 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -6,12 +6,13 @@ http://visjs.org
 
 ### Network
 
+- Added options to customize the hierarchical layout without the use of physics.
 - Altered edges for arrows and added the arrowStrikethrough option.
 - Improved the hierarchical layout algorithm by adding a condensing method to remove whitespace.
 - Fixed #1556: Network throwing an error when clicking the "Edit" button
   on the manipulation toolbar.
 - Fixed #1334 (again): Network now ignores scroll when interaction:zoomView is false.
-- Added options to customize the hierarchical layout without the use of physics.
+- Fixed #1584: Navigation buttons broken.
 
 ### Graph2d
 
diff --git a/lib/hammerUtil.js b/lib/hammerUtil.js
index 9a2f1615..4e1b79d2 100644
--- a/lib/hammerUtil.js
+++ b/lib/hammerUtil.js
@@ -7,23 +7,14 @@ var Hammer = require('./module/hammer');
  */
 exports.onTouch = function (hammer, callback) {
   callback.inputHandler = function (event) {
-    if (event.isFirst && !isTouching) {
+    if (event.isFirst) {
       callback(event);
-
-      isTouching = true;
-      setTimeout(function () {
-        isTouching = false;
-      }, 0);
     }
   };
 
   hammer.on('hammer.input', callback.inputHandler);
 };
 
-// isTouching is true while a touch action is being emitted
-// this is a hack to prevent `touch` from being fired twice
-var isTouching = false;
-
 /**
  * Register a release event, taking place after a gesture
  * @param {Hammer} hammer       A hammer instance
@@ -31,13 +22,8 @@ var isTouching = false;
  */
 exports.onRelease = function (hammer, callback) {
   callback.inputHandler = function (event) {
-    if (event.isFinal && !isReleasing) {
+    if (event.isFinal) {
       callback(event);
-
-      isReleasing = true;
-      setTimeout(function () {
-        isReleasing = false;
-      }, 0);
     }
   };
 
@@ -45,11 +31,6 @@ exports.onRelease = function (hammer, callback) {
 };
 
 
-// isReleasing is true while a release action is being emitted
-// this is a hack to prevent `release` from being fired twice
-var isReleasing = false;
-
-
 /**
  * Unregister a touch event, taking place before a gesture
  * @param {Hammer} hammer       A hammer instance