340 lines
11 KiB
JavaScript
340 lines
11 KiB
JavaScript
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/* global NexT: true */
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NexT.utils = NexT.$u = {
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/**
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* Wrap images with fancybox support.
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*/
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wrapImageWithFancyBox: function () {
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$('.content img')
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.not('[hidden]')
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.not('.group-picture img, .post-gallery img')
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.each(function () {
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var $image = $(this);
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var imageTitle = $image.attr('title');
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var $imageWrapLink = $image.parent('a');
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if ($imageWrapLink.size() < 1) {
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var imageLink = ($image.attr('data-original')) ? this.getAttribute('data-original') : this.getAttribute('src');
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$imageWrapLink = $image.wrap('<a href="' + imageLink + '"></a>').parent('a');
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}
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$imageWrapLink.addClass('fancybox fancybox.image');
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$imageWrapLink.attr('rel', 'group');
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if (imageTitle) {
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$imageWrapLink.append('<p class="image-caption">' + imageTitle + '</p>');
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//make sure img title tag will show correctly in fancybox
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$imageWrapLink.attr('title', imageTitle);
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}
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});
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$('.fancybox').fancybox({
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helpers: {
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overlay: {
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locked: false
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}
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}
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});
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},
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lazyLoadPostsImages: function () {
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$('#posts').find('img').lazyload({
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//placeholder: '/images/loading.gif',
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effect: 'fadeIn',
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threshold : 0
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});
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},
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/**
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* Tabs tag listener (without twitter bootstrap).
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*/
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registerTabsTag: function () {
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var tNav = '.tabs ul.nav-tabs ';
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// Binding `nav-tabs` & `tab-content` by real time permalink changing.
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$(function() {
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$(window).bind('hashchange', function() {
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var tHash = location.hash;
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if (tHash !== '') {
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$(tNav + 'li:has(a[href="' + tHash + '"])').addClass('active').siblings().removeClass('active');
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$(tHash).addClass('active').siblings().removeClass('active');
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}
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}).trigger('hashchange');
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});
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$(tNav + '.tab').on('click', function (href) {
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href.preventDefault();
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// Prevent selected tab to select again.
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if(!$(this).hasClass('active')){
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// Add & Remove active class on `nav-tabs` & `tab-content`.
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$(this).addClass('active').siblings().removeClass('active');
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var tActive = $(this).find('a').attr('href');
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$(tActive).addClass('active').siblings().removeClass('active');
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// Clear location hash in browser if #permalink exists.
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if (location.hash !== '') {
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history.pushState('', document.title, window.location.pathname + window.location.search);
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}
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}
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});
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},
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registerESCKeyEvent: function () {
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$(document).on('keyup', function (event) {
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var shouldDismissSearchPopup = event.which === 27 &&
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$('.search-popup').is(':visible');
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if (shouldDismissSearchPopup) {
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$('.search-popup').hide();
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$('.search-popup-overlay').remove();
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$('body').css('overflow', '');
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}
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});
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},
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registerBackToTop: function () {
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var THRESHOLD = 50;
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var $top = $('.back-to-top');
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$(window).on('scroll', function () {
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$top.toggleClass('back-to-top-on', window.pageYOffset > THRESHOLD);
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var scrollTop = $(window).scrollTop();
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var contentVisibilityHeight = NexT.utils.getContentVisibilityHeight();
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var scrollPercent = (scrollTop) / (contentVisibilityHeight);
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var scrollPercentRounded = Math.round(scrollPercent*100);
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var scrollPercentMaxed = (scrollPercentRounded > 100) ? 100 : scrollPercentRounded;
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$('#scrollpercent>span').html(scrollPercentMaxed);
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});
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$top.on('click', function () {
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$('body').velocity('scroll');
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});
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},
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/**
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* Transform embedded video to support responsive layout.
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* @see http://toddmotto.com/fluid-and-responsive-youtube-and-vimeo-videos-with-fluidvids-js/
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*/
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embeddedVideoTransformer: function () {
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var $iframes = $('iframe');
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// Supported Players. Extend this if you need more players.
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var SUPPORTED_PLAYERS = [
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'www.youtube.com',
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'player.vimeo.com',
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'player.youku.com',
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'music.163.com',
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'www.tudou.com'
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];
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var pattern = new RegExp( SUPPORTED_PLAYERS.join('|') );
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$iframes.each(function () {
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var iframe = this;
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var $iframe = $(this);
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var oldDimension = getDimension($iframe);
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var newDimension;
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if (this.src.search(pattern) > 0) {
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// Calculate the video ratio based on the iframe's w/h dimensions
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var videoRatio = getAspectRadio(oldDimension.width, oldDimension.height);
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// Replace the iframe's dimensions and position the iframe absolute
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// This is the trick to emulate the video ratio
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$iframe.width('100%').height('100%')
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.css({
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position: 'absolute',
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top: '0',
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left: '0'
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});
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// Wrap the iframe in a new <div> which uses a dynamically fetched padding-top property
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// based on the video's w/h dimensions
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var wrap = document.createElement('div');
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wrap.className = 'fluid-vids';
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wrap.style.position = 'relative';
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wrap.style.marginBottom = '20px';
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wrap.style.width = '100%';
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wrap.style.paddingTop = videoRatio + '%';
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// Fix for appear inside tabs tag.
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(wrap.style.paddingTop === '') && (wrap.style.paddingTop = '50%');
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// Add the iframe inside our newly created <div>
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var iframeParent = iframe.parentNode;
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iframeParent.insertBefore(wrap, iframe);
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wrap.appendChild(iframe);
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// Additional adjustments for 163 Music
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if (this.src.search('music.163.com') > 0) {
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newDimension = getDimension($iframe);
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var shouldRecalculateAspect = newDimension.width > oldDimension.width ||
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newDimension.height < oldDimension.height;
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// 163 Music Player has a fixed height, so we need to reset the aspect radio
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if (shouldRecalculateAspect) {
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wrap.style.paddingTop = getAspectRadio(newDimension.width, oldDimension.height) + '%';
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}
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}
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}
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});
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function getDimension($element) {
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return {
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width: $element.width(),
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height: $element.height()
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};
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}
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function getAspectRadio(width, height) {
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return height / width * 100;
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}
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},
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/**
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* Add `menu-item-active` class name to menu item
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* via comparing location.path with menu item's href.
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*/
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addActiveClassToMenuItem: function () {
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var path = window.location.pathname;
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path = path === '/' ? path : path.substring(0, path.length - 1);
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$('.menu-item a[href^="' + path + '"]:first').parent().addClass('menu-item-active');
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},
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hasMobileUA: function () {
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var nav = window.navigator;
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var ua = nav.userAgent;
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var pa = /iPad|iPhone|Android|Opera Mini|BlackBerry|webOS|UCWEB|Blazer|PSP|IEMobile|Symbian/g;
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return pa.test(ua);
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},
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isTablet: function () {
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return window.screen.width < 992 && window.screen.width > 767 && this.hasMobileUA();
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},
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isMobile: function () {
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return window.screen.width < 767 && this.hasMobileUA();
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},
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isDesktop: function () {
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return !this.isTablet() && !this.isMobile();
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},
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/**
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* Escape meta symbols in jQuery selectors.
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*
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* @param selector
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* @returns {string|void|XML|*}
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*/
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escapeSelector: function (selector) {
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return selector.replace(/[!"$%&'()*+,.\/:;<=>?@[\\\]^`{|}~]/g, '\\$&');
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},
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displaySidebar: function () {
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if (!this.isDesktop() || this.isPisces() || this.isGemini()) {
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return;
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}
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$('.sidebar-toggle').trigger('click');
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},
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isMist: function () {
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return CONFIG.scheme === 'Mist';
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},
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isPisces: function () {
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return CONFIG.scheme === 'Pisces';
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},
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isGemini: function () {
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return CONFIG.scheme === 'Gemini';
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},
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getScrollbarWidth: function () {
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var $div = $('<div />').addClass('scrollbar-measure').prependTo('body');
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var div = $div[0];
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var scrollbarWidth = div.offsetWidth - div.clientWidth;
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$div.remove();
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return scrollbarWidth;
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},
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getContentVisibilityHeight: function () {
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var docHeight = $('#content').height(),
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winHeight = $(window).height(),
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contentVisibilityHeight = (docHeight > winHeight) ? (docHeight - winHeight) : ($(document).height() - winHeight);
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return contentVisibilityHeight;
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},
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getSidebarb2tHeight: function () {
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//var sidebarb2tHeight = (CONFIG.sidebar.b2t) ? document.getElementsByClassName('back-to-top')[0].clientHeight : 0;
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var sidebarb2tHeight = (CONFIG.sidebar.b2t) ? $('.back-to-top').height() : 0;
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//var sidebarb2tHeight = (CONFIG.sidebar.b2t) ? 24 : 0;
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return sidebarb2tHeight;
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},
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getSidebarSchemePadding: function () {
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var sidebarNavHeight = ($('.sidebar-nav').css('display') == 'block') ? $('.sidebar-nav').outerHeight(true) : 0,
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sidebarInner = $('.sidebar-inner'),
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sidebarPadding = sidebarInner.innerWidth() - sidebarInner.width(),
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sidebarSchemePadding = this.isPisces() || this.isGemini() ?
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((sidebarPadding * 2) + sidebarNavHeight + (CONFIG.sidebar.offset * 2) + this.getSidebarb2tHeight()) :
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((sidebarPadding * 2) + (sidebarNavHeight / 2));
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return sidebarSchemePadding;
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}
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/**
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* Affix behaviour for Sidebar.
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*
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* @returns {Boolean}
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*/
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// needAffix: function () {
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// return this.isPisces() || this.isGemini();
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// }
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};
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$(document).ready(function () {
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initSidebarDimension();
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/**
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* Init Sidebar & TOC inner dimensions on all pages and for all schemes.
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* Need for Sidebar/TOC inner scrolling if content taller then viewport.
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*/
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function initSidebarDimension () {
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var updateSidebarHeightTimer;
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$(window).on('resize', function () {
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updateSidebarHeightTimer && clearTimeout(updateSidebarHeightTimer);
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updateSidebarHeightTimer = setTimeout(function () {
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var sidebarWrapperHeight = document.body.clientHeight - NexT.utils.getSidebarSchemePadding();
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updateSidebarHeight(sidebarWrapperHeight);
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}, 0);
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});
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// Initialize Sidebar & TOC Width.
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var scrollbarWidth = NexT.utils.getScrollbarWidth();
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if ($('.site-overview-wrap').height() > (document.body.clientHeight - NexT.utils.getSidebarSchemePadding())) {
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$('.site-overview').css('width', 'calc(100% + ' + scrollbarWidth + 'px)');
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}
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if ($('.post-toc-wrap').height() > (document.body.clientHeight - NexT.utils.getSidebarSchemePadding())) {
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$('.post-toc').css('width', 'calc(100% + ' + scrollbarWidth + 'px)');
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}
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// Initialize Sidebar & TOC Height.
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updateSidebarHeight(document.body.clientHeight - NexT.utils.getSidebarSchemePadding());
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}
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function updateSidebarHeight (height) {
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height = height || 'auto';
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$('.site-overview, .post-toc').css('max-height', height);
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}
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});
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