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Direktori : /www/specpages-backup/themes/dawn/source/js/ |
Current File : /www/specpages-backup/themes/dawn/source/js/utils.js |
/* global NexT, CONFIG */ HTMLElement.prototype.wrap = function(wrapper) { this.parentNode.insertBefore(wrapper, this); this.parentNode.removeChild(this); wrapper.appendChild(this); }; // https://caniuse.com/mdn-api_element_classlist_replace if (typeof DOMTokenList.prototype.replace !== 'function') { DOMTokenList.prototype.replace = function(remove, add) { this.remove(remove); this.add(add); }; } NexT.utils = { /** * Wrap images with fancybox. */ wrapImageWithFancyBox: function() { document.querySelectorAll('.post-body :not(a) > img, .post-body > img').forEach(element => { const $image = $(element); const imageLink = $image.attr('data-src') || $image.attr('src'); const $imageWrapLink = $image.wrap(`<a class="fancybox fancybox.image" href="${imageLink}" itemscope itemtype="http://schema.org/ImageObject" itemprop="url"></a>`).parent('a'); if ($image.is('.post-gallery img')) { $imageWrapLink.attr('data-fancybox', 'gallery').attr('rel', 'gallery'); } else if ($image.is('.group-picture img')) { $imageWrapLink.attr('data-fancybox', 'group').attr('rel', 'group'); } else { $imageWrapLink.attr('data-fancybox', 'default').attr('rel', 'default'); } const imageTitle = $image.attr('title') || $image.attr('alt'); if (imageTitle) { $imageWrapLink.append(`<p class="image-caption">${imageTitle}</p>`); // Make sure img title tag will show correctly in fancybox $imageWrapLink.attr('title', imageTitle).attr('data-caption', imageTitle); } }); $.fancybox.defaults.hash = false; $('.fancybox').fancybox({ loop : true, helpers: { overlay: { locked: false } } }); }, registerExtURL: function() { document.querySelectorAll('span.exturl').forEach(element => { const link = document.createElement('a'); // https://stackoverflow.com/questions/30106476/using-javascripts-atob-to-decode-base64-doesnt-properly-decode-utf-8-strings link.href = decodeURIComponent(atob(element.dataset.url).split('').map(c => { return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2); }).join('')); link.rel = 'noopener external nofollow noreferrer'; link.target = '_blank'; link.className = element.className; link.title = element.title; link.innerHTML = element.innerHTML; element.parentNode.replaceChild(link, element); }); }, /** * One-click copy code support. */ registerCopyCode: function() { let figure = document.querySelectorAll('figure.highlight'); if (figure.length === 0) figure = document.querySelectorAll('pre'); figure.forEach(element => { element.querySelectorAll('.code .line span').forEach(span => { span.classList.forEach(name => { span.classList.replace(name, `hljs-${name}`); }); }); if (!CONFIG.copycode) return; element.insertAdjacentHTML('beforeend', '<div class="copy-btn"><i class="fa fa-copy fa-fw"></i></div>'); const button = element.querySelector('.copy-btn'); button.addEventListener('click', () => { const lines = element.querySelector('.code') || element.querySelector('code'); const code = lines.innerText; if (navigator.clipboard) { navigator.clipboard.writeText(code).then(() => { button.querySelector('i').className = 'fa fa-check-circle fa-fw'; }, () => { button.querySelector('i').className = 'fa fa-times-circle fa-fw'; }); } else { const ta = document.createElement('textarea'); ta.style.top = window.scrollY + 'px'; // Prevent page scrolling ta.style.position = 'absolute'; ta.style.opacity = '0'; ta.readOnly = true; ta.value = code; document.body.append(ta); ta.select(); ta.setSelectionRange(0, code.length); ta.readOnly = false; const result = document.execCommand('copy'); button.querySelector('i').className = result ? 'fa fa-check-circle fa-fw' : 'fa fa-times-circle fa-fw'; ta.blur(); // For iOS button.blur(); document.body.removeChild(ta); } }); element.addEventListener('mouseleave', () => { setTimeout(() => { button.querySelector('i').className = 'fa fa-copy fa-fw'; }, 300); }); }); }, wrapTableWithBox: function() { document.querySelectorAll('table').forEach(element => { const box = document.createElement('div'); box.className = 'table-container'; element.wrap(box); }); }, registerVideoIframe: function() { document.querySelectorAll('iframe').forEach(element => { const supported = [ 'www.youtube.com', 'player.vimeo.com', 'player.youku.com', 'player.bilibili.com', 'www.tudou.com' ].some(host => element.src.includes(host)); if (supported && !element.parentNode.matches('.video-container')) { const box = document.createElement('div'); box.className = 'video-container'; element.wrap(box); const width = Number(element.width); const height = Number(element.height); if (width && height) { box.style.paddingTop = (height / width * 100) + '%'; } } }); }, registerScrollPercent: function() { const backToTop = document.querySelector('.back-to-top'); const readingProgressBar = document.querySelector('.reading-progress-bar'); // For init back to top in sidebar if page was scrolled after page refresh. window.addEventListener('scroll', () => { if (backToTop || readingProgressBar) { const contentHeight = document.body.scrollHeight - window.innerHeight; const scrollPercent = contentHeight > 0 ? Math.min(100 * window.scrollY / contentHeight, 100) : 0; if (backToTop) { backToTop.classList.toggle('back-to-top-on', Math.round(scrollPercent) >= 5); backToTop.querySelector('span').innerText = Math.round(scrollPercent) + '%'; } if (readingProgressBar) { readingProgressBar.style.width = scrollPercent.toFixed(2) + '%'; } } if (!Array.isArray(NexT.utils.sections)) return; let index = NexT.utils.sections.findIndex(element => { return element && element.getBoundingClientRect().top > 0; }); if (index === -1) { index = NexT.utils.sections.length - 1; } else if (index > 0) { index--; } this.activateNavByIndex(index); }); backToTop && backToTop.addEventListener('click', () => { window.anime({ targets : document.scrollingElement, duration : 500, easing : 'linear', scrollTop: 0 }); }); }, /** * Tabs tag listener (without twitter bootstrap). */ registerTabsTag: function() { // Binding `nav-tabs` & `tab-content` by real time permalink changing. document.querySelectorAll('.tabs ul.nav-tabs .tab').forEach(element => { element.addEventListener('click', event => { event.preventDefault(); // Prevent selected tab to select again. if (element.classList.contains('active')) return; // Add & Remove active class on `nav-tabs` & `tab-content`. [...element.parentNode.children].forEach(target => { target.classList.toggle('active', target === element); }); // https://stackoverflow.com/questions/20306204/using-queryselector-with-ids-that-are-numbers const tActive = document.getElementById(element.querySelector('a').getAttribute('href').replace('#', '')); [...tActive.parentNode.children].forEach(target => { target.classList.toggle('active', target === tActive); }); // Trigger event tActive.dispatchEvent(new Event('tabs:click', { bubbles: true })); }); }); window.dispatchEvent(new Event('tabs:register')); }, registerCanIUseTag: function() { // Get responsive height passed from iframe. window.addEventListener('message', ({ data }) => { if (typeof data === 'string' && data.includes('ciu_embed')) { const featureID = data.split(':')[1]; const height = data.split(':')[2]; document.querySelector(`iframe[data-feature=${featureID}]`).style.height = parseInt(height, 10) + 5 + 'px'; } }, false); }, registerActiveMenuItem: function() { document.querySelectorAll('.menu-item a[href]').forEach(target => { const isSamePath = target.pathname === location.pathname || target.pathname === location.pathname.replace('index.html', ''); const isSubPath = !CONFIG.root.startsWith(target.pathname) && location.pathname.startsWith(target.pathname); target.classList.toggle('menu-item-active', target.hostname === location.hostname && (isSamePath || isSubPath)); }); }, registerLangSelect: function() { const selects = document.querySelectorAll('.lang-select'); selects.forEach(sel => { sel.value = CONFIG.page.lang; sel.addEventListener('change', () => { const target = sel.options[sel.selectedIndex]; document.querySelectorAll('.lang-select-label span').forEach(span => { span.innerText = target.text; }); // Disable Pjax to force refresh translation of menu item window.location.href = target.dataset.href; }); }); }, registerSidebarTOC: function() { this.sections = [...document.querySelectorAll('.post-toc li a.nav-link')].map(element => { const target = document.getElementById(decodeURI(element.getAttribute('href')).replace('#', '')); // TOC item animation navigate. element.addEventListener('click', event => { event.preventDefault(); const offset = target.getBoundingClientRect().top + window.scrollY; window.anime({ targets : document.scrollingElement, duration : 500, easing : 'linear', scrollTop: offset + 10 }); }); return target; }); }, activateNavByIndex: function(index) { const target = document.querySelectorAll('.post-toc li a.nav-link')[index]; if (!target || target.classList.contains('active-current')) return; document.querySelectorAll('.post-toc .active').forEach(element => { element.classList.remove('active', 'active-current'); }); target.classList.add('active', 'active-current'); let parent = target.parentNode; while (!parent.matches('.post-toc')) { if (parent.matches('li')) parent.classList.add('active'); parent = parent.parentNode; } // Scrolling to center active TOC element if TOC content is taller then viewport. const tocElement = document.querySelector('.sidebar-panel-container'); window.anime({ targets : tocElement, duration : 200, easing : 'linear', scrollTop: tocElement.scrollTop - (tocElement.offsetHeight / 2) + target.getBoundingClientRect().top - tocElement.getBoundingClientRect().top }); }, getComputedStyle: function(element) { const clone = element.cloneNode(true); clone.style.position = 'absolute'; clone.style.visibility = 'hidden'; clone.style.display = 'block'; element.parentNode.appendChild(clone); const height = clone.clientHeight; element.parentNode.removeChild(clone); return height; }, /** * Init Sidebar & TOC inner dimensions on all pages and for all schemes. * Need for Sidebar/TOC inner scrolling if content taller then viewport. */ initSidebarDimension: function() { const sidebarNav = document.querySelector('.sidebar-nav'); const sidebarb2t = document.querySelector('.sidebar-inner .back-to-top'); const sidebarNavHeight = sidebarNav ? sidebarNav.offsetHeight : 0; const sidebarb2tHeight = sidebarb2t ? sidebarb2t.offsetHeight : 0; const sidebarOffset = CONFIG.sidebar.offset || 12; let sidebarSchemePadding = (CONFIG.sidebar.padding * 2) + sidebarNavHeight + sidebarb2tHeight; if (CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') sidebarSchemePadding += sidebarOffset * 2; // Initialize Sidebar & TOC Height. const sidebarWrapperHeight = document.body.offsetHeight - sidebarSchemePadding + 'px'; document.documentElement.style.setProperty('--sidebar-wrapper-height', sidebarWrapperHeight); }, updateSidebarPosition: function() { NexT.utils.initSidebarDimension(); if (window.innerWidth < 992 || CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') return; // Expand sidebar on post detail page by default, when post has a toc. const hasTOC = document.querySelector('.post-toc'); let display = CONFIG.page.sidebar; if (typeof display !== 'boolean') { // There's no definition sidebar in the page front-matter. display = CONFIG.sidebar.display === 'always' || (CONFIG.sidebar.display === 'post' && hasTOC); } if (display) { window.dispatchEvent(new Event('sidebar:show')); } }, getScript: function(url, callback, condition) { if (condition) { callback(); } else { const script = document.createElement('script'); script.onload = () => { setTimeout(callback); }; script.src = url; document.head.appendChild(script); } }, loadComments: function(selector, callback) { const element = document.querySelector(selector); if (!CONFIG.comments.lazyload || !element) { callback(); return; } const intersectionObserver = new IntersectionObserver((entries, observer) => { const entry = entries[0]; if (entry.isIntersecting) { callback(); observer.disconnect(); } }); intersectionObserver.observe(element); return intersectionObserver; } };