https://www.theatre2lacte.com/wp-content/themes/event/themify/them…/js/themify.scroll-highlight.js?ver=6.2.13

1/**
2 * Themify Scroll to element based on its class and highlight it when a menu item is clicked.
3 * Copyright (c) Themify
4 */
5;(function( $, window, document ) {
6
7	'use strict';
8
9	if ( ! String.prototype.trim ) {
10		String.prototype.trim = function () {
11			return this.replace( /^\s+|\s+$/g, '' );
12		};
13	}
14
15	var pluginName = 'themifyScrollHighlight',
16		defaults = {
17			speed: 900,
18			prefix: '.tb_section-',
19			navigation: '#main-nav',
20			context: 'body',
21			element: '.themify_builder_row',
22			scrollRate: 250,
23			considerHeader: false
24		};
25
26	function Plugin( element, options ) {
27		this.element = element;
28		this.options = $.extend( {}, defaults, options );
29		this._defaults = defaults;
30		this.init();
31	}
32
33	Plugin.prototype = {
34
35		getOffset: function(){
36			var $wpAdminBar = $('#wpadminbar'),	$headerWrap = $('#headerwrap'),
37				scrollOffset = 10;
38			if ( this.options.considerHeader && $headerWrap.length > 0 && $('body').hasClass('has-fixed-header') ) {
39				scrollOffset = $headerWrap.outerHeight();
40			}
41			if ( $wpAdminBar.length > 0 ) {
42				scrollOffset += $wpAdminBar.outerHeight();
43			}
44			return scrollOffset;
45		},
46
47		highlightLink: function( hash ){
48			this.dehighlightLinks();
49			if ( '' != hash ) {
50				var $linkHash = $(this.options.navigation).find( 'a[href*=' + hash + ']' );
51				if ( $linkHash.length > 0 ) {
52					$linkHash.each(function(){
53						var $link = $(this);
54						if ( $link.prop('hash') == hash ) {
55							$link.parent().addClass( 'current_page_item' );
56							/**
57							 * Fires event scrollhighlight.themify
58							 * Receives anchor with hash
59							 */
60							$('body').trigger( 'scrollhighlight.themify', [ hash ] );
61							return;
62						}
63					});
64				} 
65			}
66		},
67
68		dehighlightLinks: function() {
69			$(this.options.navigation).find( 'a[href*=#]' ).each(function(){
70				$(this).parent().removeClass( 'current_page_item' ).removeClass( 'current-menu-item' );
71			});
72		},
73
74		isInViewport: function ( obj ) {
75			var $t = $(obj),
76				$window = $(window),
77				windowHeight = $window.height(),
78				windowTop = $window.scrollTop(),
79				// Divided by X to tell it's visible when the section is half way into viewport
80				windowBottom = windowTop + (windowHeight/4),
81				eleTop = $t.offset().top,
82				eleBottom = eleTop + $t.height();
83			return ((eleTop <= windowBottom) && (eleBottom >= windowTop));
84		},
85
86		isHash: function( hash ) {
87			return hash && '' != hash && '#' != hash;
88		},
89
90		removeHash: function() {
91			var windowLocation = window.location;
92			if ( this.isCorrectHash() && this.isHash( windowLocation.hash ) ) {
93				if ( 'replaceState' in history ) {
94					history.replaceState( '', document.title, windowLocation.pathname + windowLocation.search );
95				}
96			}
97		},
98
99		changeHash: function ( href ) {
100			if ( 'replaceState' in history ) {
101				history.replaceState( null, null, href );
102			} else {
103				var section = href.replace(/^.*#/, '');
104				if ( section && '' != section ) {
105					var $elem = $('.tb_section-' + section);
106					if ( $elem.length > 0 ) {
107						var realID = $elem.attr('id');
108						$elem.attr('id', realID + 'tmpobjxyz5783a');
109						window.location.hash = section;
110						$elem.attr('id', realID);
111					}
112				}
113			}
114		},
115
116		isCorrectHash: function() {
117            var hash = location.hash.slice(1);
118            // Compatiblity with Ecwid Plugin
119            return ! ! (hash != '' && hash.indexOf('!') === - 1);
120        },
121
122		linkScroll: function( obj, href ) {
123			var self = this;
124			// Set offset from top
125			var to = $( obj ).offset().top - this.getOffset();
126			// Animate scroll
127			$('html,body').stop().animate({
128				scrollTop: to
129			}, this.options.speed, function() {
130				// Highlight link
131				self.highlightLink( obj.replace( self.options.prefix, '#' ) );
132
133				if ( href != window.location.hash ) {
134					// Change URL hash
135					self.changeHash( href );
136				}
137
138				// Set scrolling state
139				self.scrolling = false;
140			});
141		},
142
143		manualScroll: function( elementsToCheck ) {
144			if ( elementsToCheck.length > 0 ) {
145				if ( $(window).scrollTop() < 50 ) {
146					this.dehighlightLinks();
147					this.removeHash();
148				} else {
149					var self = this,
150						didHighlight = false,
151						href = '';
152					$.each(elementsToCheck, function( i, val ){
153						if ( self.isInViewport( val ) ) {
154							var elemsFirstPass = val.split('.tb_section-');
155							if ( elemsFirstPass[1] ) {
156								var elemsSndPass = elemsFirstPass[1].split('.' );
157
158								href = '';
159								if ( elemsSndPass.length > 1 && elemsSndPass[0] ) {
160									href = '#' + elemsSndPass[0];
161								} else {
162									href = '#' + elemsSndPass;
163								}
164
165								// Set highlight state
166								didHighlight = true;
167

168								if ( '' != href ) {
169									return;
170								}
171							}
172						}
173					});
174					if ( '#' != href && href != window.location.hash ) {
175						// Highlight link
176						self.highlightLink( href );
177
178						// Change URL hash
179						self.changeHash( href );
180					}
181					if ( ! didHighlight ) {
182						self.dehighlightLinks();
183					}
184				}
185			}
186		},
187
188		scrolling: false,
189
190		init: function () {
191			var self = this;
192
193			// Smooth Scroll and Link Highlight
194			$( this.options.context ).find( 'a[href*=#]' ).not( 'a[href=#]' ).on( 'click', function (e) {
195				// Build class to scroll to
196				var href = $(this).prop('hash'),
197					classToScroll = href.replace(/#/, self.options.prefix);
198
199				// If the section exists in this page
200				if ( 1 == $(classToScroll).length ) {
201					// Set state
202					self.scrolling = true;
203					// Perform scroll
204					self.linkScroll( classToScroll, href );
205					// Avoid link behaviour
206					e.preventDefault();
207				}
208			});
209			$('#wpadminbar').find('a').off('click');
210
211
212			// Highlight Link when scroll over element
213			var elementsToCheck = [];
214			// Build list of elements to check visibility
215			$('div[class*=' + self.options.prefix.replace('.', '') + ']').not(self.options.exclude).each(function(){
216				elementsToCheck.push( '.' + $(this).attr('class').trim().replace(/ /g, '.') );
217			});
218
219			// Setup scroll event
220			var didScroll = false;
221			$(window).scroll(function() {
222				didScroll = true;
223			});
224			setInterval(function() {
225				if ( didScroll && ! self.scrolling ) {
226					didScroll = false;
227					self.manualScroll( elementsToCheck );
228				}
229			}, self.options.scrollRate);
230
231			// Initial section visibility check and link highlight
232			$(window).load(function(){
233				if ( self.isHash( window.location.hash ) ) {
234					// If there's a hash, scroll to it
235					var hash = window.location.hash,
236						$linkHash = $( self.options.context ).find( 'a[href*=' + hash + ']' );
237					if ( $linkHash.length > 0 ) {
238						$linkHash.each(function(){
239							var $link = $(this);
240							if ( $link.prop('hash') == hash ) {
241								$link.trigger( 'click' );
242								return;
243							}
244						});
245					}  else {
246						self.manualScroll( elementsToCheck );
247					}
248				} else {
249					self.manualScroll( elementsToCheck );
250				}
251			});
252		}
253	};
254
255	$.fn[pluginName] = function ( options ) {
256		return this.each( function () {
257			if ( ! $.data( this, 'plugin_' + pluginName ) ) {
258				$.data( this, 'plugin_' + pluginName, new Plugin( this, options ) );
259			}
260		});
261	};
262
263})( jQuery, window, document );