From 29758c296658725f09e2d03ce923ac965ca1d8e3 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Thu, 28 Jan 2016 20:53:12 +0100
Subject: [PATCH] Added polyfill for smooth scrooling

---
 wcfsetup/install/files/js/WCF.Assets.js         | 12 +++++++++++-
 .../install/files/js/WoltLab/WCF/Dom/Util.js    |  8 ++++----
 .../files/js/WoltLab/WCF/Ui/Page/JumpToTop.js   |  2 ++
 .../install/files/js/WoltLab/WCF/Ui/Tooltip.js  | 17 ++++++-----------
 4 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/wcfsetup/install/files/js/WCF.Assets.js b/wcfsetup/install/files/js/WCF.Assets.js
index f4baf65a9b..145db8d8bf 100644
--- a/wcfsetup/install/files/js/WCF.Assets.js
+++ b/wcfsetup/install/files/js/WCF.Assets.js
@@ -44,4 +44,14 @@
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+
+/**
+ * Polyfill for smooth scrolling.
+ * https://github.com/iamdustan/smoothscroll
+ * 
+ * Copyright 2013, Dustan Kasten
+ * Released under the MIT license.
+ * https://github.com/iamdustan/smoothscroll/blob/master/LICENSE
+ */
+!function(e,t,r){"use strict";function n(){return e.performance!==r&&e.performance.now!==r?e.performance.now():Date.now()}function o(e){return.5*(1-Math.cos(Math.PI*e))}function a(e){if("object"!=typeof e||e.behavior===r||"auto"===e.behavior||"instant"===e.behavior)return!0;if("smooth"===e.behavior)return!1;throw new TypeError(e.behavior+" is not a valid value for enumeration ScrollBehavior")}function l(e,t,r){e.scrollTop=r,e.scrollLeft=t}function i(e){return e.clientHeight<e.scrollHeight||e.clientWidth<e.scrollWidth?e:e.parentNode.parentNode?i(e.parentNode):void 0}function s(t,r){function a(){var u,p,g,v=n(),d=(v-s)/f;return d=d>1?1:d,u=o(d),p=l+(t-l)*u,g=i+(r-i)*u,m(p,g),p===t&&g===r?(l=i=s=null,void e.cancelAnimationFrame(c)):void(c=e.requestAnimationFrame(a))}var l=e.scrollX||e.pageXOffset,i=e.scrollY||e.pageYOffset,s=n();c&&e.cancelAnimationFrame(c),c=e.requestAnimationFrame(a)}function u(t,r){function a(){var r,g,v,d=n(),h=(d-p)/f;return h=h>1?1:h,r=o(h),g=i+(u-i)*r,v=s+(m-s)*r,l(t,g,v),g===u&&v===m?(i=s=p=null,void e.cancelAnimationFrame(c)):void(c=e.requestAnimationFrame(a))}var i=t.scrollLeft,s=t.scrollTop,u=r.left,m=r.top,p=n();c&&e.cancelAnimationFrame(c),c=e.requestAnimationFrame(a)}if(!("scrollBehavior"in t.documentElement.style)){var c,f=768,m=e.scrollTo,p=e.scrollBy,g=e.Element.prototype.scrollIntoView;e.scroll=e.scrollTo=function(){return a(arguments[0])?m.call(e,arguments[0].left||arguments[0],arguments[0].top||arguments[1]):s.call(e,~~arguments[0].left,~~arguments[0].top)},e.scrollBy=function(){if(a(arguments[0]))return p.call(e,arguments[0].left||arguments[0],arguments[0].top||arguments[1]);var t=e.scrollX||e.pageXOffset,r=e.scrollY||e.pageYOffset;return s(~~arguments[0].left+t,~~arguments[0].top+r)},Element.prototype.scrollIntoView=function(){var t,r,n,o,l,s;return a(arguments[0])?g.call(this,arguments[0]||!0):(l=i(this),l&&(s=e.getComputedStyle(l,null),r=parseInt(s.getPropertyValue("padding-left"),10),n=parseInt(s.getPropertyValue("padding-top"),10),t={top:this.offsetTop-2*n,left:this.offsetLeft-2*r},o=u(l,t)),o)}}}(window,document);
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
index 3d4754e83d..d2acaae6c9 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
@@ -125,8 +125,8 @@ define([], function() {
 		/**
 		 * Returns the outer dimensions of an element including margins.
 		 * 
-		 * @param	{Element}		el		element
-		 * @return	{{height: integer, width: integer}}	dimensions in px
+		 * @param	{Element}       el	        element
+		 * @return	{{height: int, width: int}}     dimensions in px
 		 */
 		outerDimensions: function(el) {
 			var styles = window.getComputedStyle(el);
@@ -140,8 +140,8 @@ define([], function() {
 		/**
 		 * Returns the element's offset relative to the document's top left corner.
 		 * 
-		 * @param	{Element}	el	element
-		 * @return	{{left: integer, top: integer}}		offset relative to top left corner
+		 * @param	{Element}	el	        element
+		 * @return	{{left: int, top: int}}         offset relative to top left corner
 		 */
 		offset: function(el) {
 			var rect = el.getBoundingClientRect();
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/JumpToTop.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/JumpToTop.js
index 41e82bda13..f286043312 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/JumpToTop.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/JumpToTop.js
@@ -50,6 +50,8 @@ define(['Environment', 'Language', './Action'], function(Environment, Language,
 		 */
 		_jump: function(event) {
 			event.preventDefault();
+			
+			elById('top').scrollIntoView({ behavior: 'smooth' });
 		},
 		
 		/**
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Tooltip.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Tooltip.js
index bd579569a4..26fda8b889 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Tooltip.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Tooltip.js
@@ -17,7 +17,7 @@ define(['Environment', 'Dom/ChangeListener', 'Ui/Alignment'], function(Environme
 	/**
 	 * @exports	WoltLab/WCF/Ui/Tooltip
 	 */
-	var UiTooltip = {
+	return {
 		/**
 		 * Initializes the tooltip element and binds event listener.
 		 */
@@ -51,13 +51,12 @@ define(['Environment', 'Dom/ChangeListener', 'Ui/Alignment'], function(Environme
 		 * Initializes tooltip elements.
 		 */
 		init: function() {
+			var element, title;
 			while (_elements.length) {
-				var element = _elements[0];
+				element = _elements[0];
 				element.classList.remove('jsTooltip');
 				
-				var title = elAttr(element, 'title');
-				title = (typeof title === 'string') ? title.trim() : '';
-				
+				title = elAttr(element, 'title').trim();
 				if (title.length) {
 					elData(element, 'tooltip', title);
 					element.removeAttribute('title');
@@ -72,7 +71,7 @@ define(['Environment', 'Dom/ChangeListener', 'Ui/Alignment'], function(Environme
 		/**
 		 * Displays the tooltip on mouse enter.
 		 * 
-		 * @param	{object}	event	event object
+		 * @param	{Event}         event	event object
 		 */
 		_mouseEnter: function(event) {
 			var element = event.currentTarget;
@@ -111,13 +110,9 @@ define(['Environment', 'Dom/ChangeListener', 'Ui/Alignment'], function(Environme
 		
 		/**
 		 * Hides the tooltip once the mouse leaves the element.
-		 * 
-		 * @param	{object}	event	event object
 		 */
-		_mouseLeave: function(event) {
+		_mouseLeave: function() {
 			_tooltip.classList.remove('active');
 		}
 	};
-	
-	return UiTooltip;
 });
-- 
2.20.1