mirror of
https://github.com/mContext/mContext.github.io.git
synced 2024-09-18 06:04:54 +08:00
396 lines
14 KiB
JavaScript
396 lines
14 KiB
JavaScript
/* global NexT, CONFIG */
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HTMLElement.prototype.wrap = function(wrapper) {
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this.parentNode.insertBefore(wrapper, this);
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this.parentNode.removeChild(this);
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wrapper.appendChild(this);
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};
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NexT.utils = {
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/**
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* Wrap images with fancybox.
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*/
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wrapImageWithFancyBox: function() {
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document.querySelectorAll('.post-body :not(a) > img, .post-body > img').forEach(element => {
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var $image = $(element);
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var imageLink = $image.attr('data-src') || $image.attr('src');
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var $imageWrapLink = $image.wrap(`<a class="fancybox fancybox.image" href="${imageLink}" itemscope itemtype="http://schema.org/ImageObject" itemprop="url"></a>`).parent('a');
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if ($image.is('.post-gallery img')) {
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$imageWrapLink.addClass('post-gallery-img');
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$imageWrapLink.attr('data-fancybox', 'gallery').attr('rel', 'gallery');
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} else if ($image.is('.group-picture img')) {
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$imageWrapLink.attr('data-fancybox', 'group').attr('rel', 'group');
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} else {
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$imageWrapLink.attr('data-fancybox', 'default').attr('rel', 'default');
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}
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var imageTitle = $image.attr('title') || $image.attr('alt');
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if (imageTitle) {
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$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).attr('data-caption', imageTitle);
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}
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});
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$.fancybox.defaults.hash = false;
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$('.fancybox').fancybox({
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loop : true,
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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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registerExtURL: function() {
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document.querySelectorAll('.exturl').forEach(element => {
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element.addEventListener('click', event => {
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var exturl = event.currentTarget.getAttribute('data-url');
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var decurl = decodeURIComponent(escape(window.atob(exturl)));
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window.open(decurl, '_blank', 'noopener');
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return false;
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});
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});
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},
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/**
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* One-click copy code support.
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*/
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registerCopyCode: function() {
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document.querySelectorAll('figure.highlight').forEach(element => {
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const box = document.createElement('div');
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element.wrap(box);
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box.classList.add('highlight-container');
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box.insertAdjacentHTML('beforeend', '<div class="copy-btn"><i class="fa fa-clipboard"></i></div>');
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var button = element.parentNode.querySelector('.copy-btn');
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button.addEventListener('click', event => {
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var target = event.currentTarget;
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var code = [...target.parentNode.querySelectorAll('.code .line')].map(line => {
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return line.innerText;
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}).join('\n');
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var ta = document.createElement('textarea');
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ta.style.top = window.scrollY + 'px'; // Prevent page scrolling
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ta.style.position = 'absolute';
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ta.style.opacity = '0';
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ta.readOnly = true;
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ta.value = code;
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document.body.append(ta);
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const selection = document.getSelection();
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const selected = selection.rangeCount > 0 ? selection.getRangeAt(0) : false;
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ta.select();
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ta.setSelectionRange(0, code.length);
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ta.readOnly = false;
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var result = document.execCommand('copy');
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if (CONFIG.copycode.show_result) {
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target.querySelector('i').className = result ? 'fa fa-check' : 'fa fa-times';
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}
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ta.blur(); // For iOS
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target.blur();
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if (selected) {
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selection.removeAllRanges();
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selection.addRange(selected);
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}
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document.body.removeChild(ta);
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});
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button.addEventListener('mouseleave', event => {
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setTimeout(() => {
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event.target.querySelector('i').className = 'fa fa-clipboard';
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}, 300);
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});
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});
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},
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wrapTableWithBox: function() {
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document.querySelectorAll('table').forEach(element => {
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const box = document.createElement('div');
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box.className = 'table-container';
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element.wrap(box);
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});
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},
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registerVideoIframe: function() {
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document.querySelectorAll('iframe').forEach(element => {
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const supported = [
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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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'player.bilibili.com',
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'www.tudou.com'
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].some(host => element.src.includes(host));
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if (supported && !element.parentNode.matches('.video-container')) {
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const box = document.createElement('div');
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box.className = 'video-container';
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element.wrap(box);
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let width = Number(element.width);
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let height = Number(element.height);
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if (width && height) {
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element.parentNode.style.paddingTop = (height / width * 100) + '%';
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}
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}
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});
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},
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registerScrollPercent: function() {
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var THRESHOLD = 50;
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var backToTop = document.querySelector('.back-to-top');
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var readingProgressBar = document.querySelector('.reading-progress-bar');
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// For init back to top in sidebar if page was scrolled after page refresh.
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window.addEventListener('scroll', () => {
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var scrollPercent;
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if (backToTop || readingProgressBar) {
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var docHeight = document.querySelector('.container').offsetHeight;
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var winHeight = window.innerHeight;
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var contentVisibilityHeight = docHeight > winHeight ? docHeight - winHeight : document.body.scrollHeight - winHeight;
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var scrollPercentRounded = Math.round(100 * window.scrollY / contentVisibilityHeight);
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scrollPercent = Math.min(scrollPercentRounded, 100) + '%';
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}
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if (backToTop) {
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backToTop.classList.toggle('back-to-top-on', window.scrollY > THRESHOLD);
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backToTop.querySelector('span').innerText = scrollPercent;
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}
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if (readingProgressBar) {
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readingProgressBar.style.width = scrollPercent;
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}
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});
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backToTop && backToTop.addEventListener('click', () => {
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window.anime({
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targets : [document.documentElement, document.body],
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duration : 500,
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easing : 'linear',
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scrollTop: 0
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});
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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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// Binding `nav-tabs` & `tab-content` by real time permalink changing.
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document.querySelectorAll('.tabs ul.nav-tabs .tab').forEach(element => {
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element.addEventListener('click', event => {
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event.preventDefault();
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var target = event.currentTarget;
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// Prevent selected tab to select again.
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if (!target.classList.contains('active')) {
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// Add & Remove active class on `nav-tabs` & `tab-content`.
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[...target.parentNode.children].forEach(element => {
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element.classList.remove('active');
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});
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target.classList.add('active');
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var tActive = document.getElementById(target.querySelector('a').getAttribute('href').replace('#', ''));
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[...tActive.parentNode.children].forEach(element => {
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element.classList.remove('active');
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});
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tActive.classList.add('active');
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// Trigger event
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tActive.dispatchEvent(new Event('tabs:click', {
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bubbles: true
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}));
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}
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});
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});
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window.dispatchEvent(new Event('tabs:register'));
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},
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registerCanIUseTag: function() {
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// Get responsive height passed from iframe.
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window.addEventListener('message', event => {
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var data = event.data;
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if ((typeof data === 'string') && (data.indexOf('ciu_embed') > -1)) {
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var featureID = data.split(':')[1];
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var height = data.split(':')[2];
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document.querySelector(`iframe[data-feature=${featureID}]`).style.height = parseInt(height, 10) + 'px';
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}
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}, false);
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},
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registerActiveMenuItem: function() {
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document.querySelectorAll('.menu-item').forEach(element => {
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var target = element.querySelector('a[href]');
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if (!target) return;
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var isSamePath = target.pathname === location.pathname || target.pathname === location.pathname.replace('index.html', '');
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var isSubPath = target.pathname !== CONFIG.root && location.pathname.indexOf(target.pathname) === 0;
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element.classList.toggle('menu-item-active', target.hostname === location.hostname && (isSamePath || isSubPath));
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});
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},
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registerSidebarTOC: function() {
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const navItems = document.querySelectorAll('.post-toc li');
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const sections = [...navItems].map(element => {
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var link = element.querySelector('a.nav-link');
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// TOC item animation navigate.
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link.addEventListener('click', event => {
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event.preventDefault();
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var target = document.getElementById(event.currentTarget.getAttribute('href').replace('#', ''));
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var offset = target.getBoundingClientRect().top + window.scrollY;
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window.anime({
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targets : [document.documentElement, document.body],
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duration : 500,
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easing : 'linear',
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scrollTop: offset + 10
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});
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});
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return document.getElementById(link.getAttribute('href').replace('#', ''));
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});
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var tocElement = document.querySelector('.post-toc-wrap');
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function activateNavByIndex(target) {
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if (target.classList.contains('active-current')) return;
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document.querySelectorAll('.post-toc .active').forEach(element => {
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element.classList.remove('active', 'active-current');
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});
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target.classList.add('active', 'active-current');
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var parent = target.parentNode;
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while (!parent.matches('.post-toc')) {
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if (parent.matches('li')) parent.classList.add('active');
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parent = parent.parentNode;
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}
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// Scrolling to center active TOC element if TOC content is taller then viewport.
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window.anime({
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targets : tocElement,
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duration : 200,
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easing : 'linear',
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scrollTop: tocElement.scrollTop - (tocElement.offsetHeight / 2) + target.getBoundingClientRect().top - tocElement.getBoundingClientRect().top
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});
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}
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function findIndex(entries) {
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let index = 0;
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let entry = entries[index];
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if (entry.boundingClientRect.top > 0) {
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index = sections.indexOf(entry.target);
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return index === 0 ? 0 : index - 1;
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}
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for (; index < entries.length; index++) {
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if (entries[index].boundingClientRect.top <= 0) {
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entry = entries[index];
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} else {
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return sections.indexOf(entry.target);
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}
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}
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return sections.indexOf(entry.target);
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}
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function createIntersectionObserver(marginTop) {
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marginTop = Math.floor(marginTop + 10000);
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let intersectionObserver = new IntersectionObserver((entries, observe) => {
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let scrollHeight = document.documentElement.scrollHeight + 100;
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if (scrollHeight > marginTop) {
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observe.disconnect();
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createIntersectionObserver(scrollHeight);
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return;
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}
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let index = findIndex(entries);
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activateNavByIndex(navItems[index]);
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}, {
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rootMargin: marginTop + 'px 0px -100% 0px',
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threshold : 0
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});
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sections.forEach(element => {
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element && intersectionObserver.observe(element);
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});
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}
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createIntersectionObserver(document.documentElement.scrollHeight);
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},
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hasMobileUA: function() {
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var ua = navigator.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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isMuse: function() {
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return CONFIG.scheme === 'Muse';
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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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/**
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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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initSidebarDimension: function() {
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var sidebarNav = document.querySelector('.sidebar-nav');
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var sidebarNavHeight = sidebarNav.style.display !== 'none' ? sidebarNav.offsetHeight : 0;
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var sidebarOffset = CONFIG.sidebar.offset || 12;
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var sidebarb2tHeight = CONFIG.back2top.enable && CONFIG.back2top.sidebar ? document.querySelector('.back-to-top').offsetHeight : 0;
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var sidebarSchemePadding = CONFIG.sidebar.padding * 2 + sidebarNavHeight + sidebarb2tHeight;
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// Margin of sidebar b2t: 8px -10px -20px, brings a different of 12px.
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if (NexT.utils.isPisces() || NexT.utils.isGemini()) sidebarSchemePadding += (sidebarOffset * 2) - 12;
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// Initialize Sidebar & TOC Height.
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var sidebarWrapperHeight = document.body.offsetHeight - sidebarSchemePadding + 'px';
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document.querySelector('.site-overview-wrap').style.maxHeight = sidebarWrapperHeight;
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document.querySelector('.post-toc-wrap').style.maxHeight = sidebarWrapperHeight;
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},
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updateSidebarPosition: function() {
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var sidebarNav = document.querySelector('.sidebar-nav');
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var hasTOC = document.querySelector('.post-toc');
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if (hasTOC) {
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sidebarNav.style.display = '';
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sidebarNav.classList.add('motion-element');
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document.querySelector('.sidebar-nav-toc').click();
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} else {
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sidebarNav.style.display = 'none';
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sidebarNav.classList.remove('motion-element');
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document.querySelector('.sidebar-nav-overview').click();
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}
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NexT.utils.initSidebarDimension();
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if (!this.isDesktop() || this.isPisces() || this.isGemini()) return;
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// Expand sidebar on post detail page by default, when post has a toc.
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var display = CONFIG.page.sidebar;
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if (typeof display !== 'boolean') {
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// There's no definition sidebar in the page front-matter.
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display = CONFIG.sidebar.display === 'always' || (CONFIG.sidebar.display === 'post' && hasTOC);
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}
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if (display) {
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window.dispatchEvent(new Event('sidebar:show'));
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}
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},
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getScript: function(url, callback, condition) {
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if (condition) {
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callback();
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} else {
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var script = document.createElement('script');
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script.onload = script.onreadystatechange = function(_, isAbort) {
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if (isAbort || !script.readyState || /loaded|complete/.test(script.readyState)) {
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script.onload = script.onreadystatechange = null;
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script = undefined;
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if (!isAbort && callback) setTimeout(callback, 0);
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}
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};
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script.src = url;
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document.head.appendChild(script);
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}
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}
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};
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