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/* * jQuery Section Scroll v2 * Contributor: https://github.com/sylvainbaronnet * * Copyright (c) 2016 Danish Iqbal * http://plugins.imdanishiqbal.com/section-scroll * * Licensed under MIT * */ (function ($) { 'use strict'; $.fn.sectionScroll = function (options) { var $container = this, $window = $(window), $section_number = 1, f_lastId, lastId, settings = $.extend({ bulletsClass: 'section-bullets', sectionsClass: 'scrollable-section', scrollDuration: 1000, titles: true, topOffset: 0, easing: '', id:'', position:'left' }, options); var tm_id=settings.id+'-navi'; var cont_cls=''; var $sections2 =$("#"+settings.id).find('.' + settings.sectionsClass); var $sections =$('.' + settings.sectionsClass); if(settings.position=="left" || settings.position=="right"){ cont_cls='ctl-bullets-container'; }else if(settings.position=="bottom"){ cont_cls='ctl-footer-bullets-container'; } var $bullets = $('<div id="'+ tm_id +'" class="'+ cont_cls +'"><ul class="'+ settings.bulletsClass +'"></ul></div>') .prependTo($container) .find('ul'); /* Build navigation */ var bullets_html = ''; $sections2.each(function () { var $this = $(this); var title = $this.data('section-title') || ''; var cls=''; $this.attr('id', 'scrollto-section-'+tm_id+'-'+title); cls= $this.data("cls"); var bullet_title = settings.titles ? '<span>' + title + '</span>' : ''; bullets_html += '<li class="year-' + title + " " + cls + ' "><a title="' + title + '" href="#scrollto-section-'+tm_id+'-'+title + '">' + bullet_title + '</a></li>'; $section_number++; }); var $bullets_items = $(bullets_html).appendTo($bullets); var scrollItems = $bullets_items.map(function () { var item = $($(this).find('a').attr('href')); if (item[0]) { return item; } }); $bullets_items.on('click', function (e) { var href = $(this).find('a').attr('href'), offsetTop = href === '#' ? 0 : $(href).offset().top; $('html, body').stop().animate({ scrollTop: offsetTop - settings.topOffset }, settings.scrollDuration, settings.easing, function(){ $container.trigger('scrolled-to-section').stop(); }); e.preventDefault(); } ); $window.on('scroll', function () { var fromTop = $window.scrollTop() + ($window.height() / 2.5); var cur = scrollItems.map(function () { if ($(this).offset().top < fromTop) { return this; } }); cur = cur.length > 0 ? cur[cur.length - 1] : []; var id = cur[0] ? cur[0].id : ''; if (lastId !== id) { $sections2.removeClass('active-section'); $(cur).addClass('active-section'); $bullets_items .removeClass('active') .find('a[href="#' + id + '"]') .parent() .addClass('active'); var ele= $bullets_items .find('a[href="#' + id + '"]').parent(); if($(ele).position()){ var topPos=parseInt($(ele).position().top); if(topPos && undefined!=topPos){ $('.'+cont_cls).stop().animate({scrollTop: topPos},1000); } } lastId = id; $.fn.sectionScroll.activeSection = cur; $container.trigger('section-reached'); } }); $(function() { $window.scroll(); }); return $container; }; }(jQuery));