283 lines
12 KiB
JavaScript
283 lines
12 KiB
JavaScript
(function () {
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'use strict';
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var config = window.aksrtWidgets || {};
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var reducedMotion = window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
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function once(el, key) {
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var name = 'aksrt' + key;
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if (el.dataset[name]) return false;
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el.dataset[name] = '1';
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return true;
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}
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function moveTabFocus(event, root) {
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var current = event.target.closest('[role="tab"]');
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if (!current) return;
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var tabs = Array.prototype.slice.call(root.querySelectorAll('[role="tab"]'));
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var index = tabs.indexOf(current);
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var next = index;
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if (event.key === 'ArrowRight') next = (index + 1) % tabs.length;
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else if (event.key === 'ArrowLeft') next = (index - 1 + tabs.length) % tabs.length;
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else if (event.key === 'Home') next = 0;
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else if (event.key === 'End') next = tabs.length - 1;
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else return;
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event.preventDefault();
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tabs[next].focus();
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tabs[next].click();
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}
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function videoType(url) {
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if (/\.m3u8(?:\?|$)/i.test(url)) return 'hls';
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if (/\.flv(?:\?|$)/i.test(url)) return 'flv';
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if (/\.mpd(?:\?|$)/i.test(url)) return 'dash';
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return 'auto';
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}
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function initVideo(el) {
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if (!once(el, 'Video')) return;
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var fallback = el.querySelector('video');
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if (fallback) {
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fallback.addEventListener('error', function () {
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var message = el.querySelector('.aksrt-widget-media-error');
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if (message) message.hidden = false;
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});
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}
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function mountPlayer(event) {
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if (typeof window.DPlayer !== 'function' || el.aksrtPlayer) return;
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if (event) event.preventDefault();
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var holder = document.createElement('div');
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holder.className = 'aksrt-widget-video__player';
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el.insertBefore(holder, fallback || el.firstChild);
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try {
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el.aksrtPlayer = new window.DPlayer({
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container: holder,
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autoplay: el.dataset.autoplay === '1' && !reducedMotion,
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video: {
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url: el.dataset.videoUrl || '',
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pic: el.dataset.videoPoster || '',
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type: videoType(el.dataset.videoUrl || '')
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}
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});
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if (el.dataset.muted === '1' && el.aksrtPlayer.video) el.aksrtPlayer.video.muted = true;
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if (fallback) fallback.hidden = true;
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} catch (error) {
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holder.remove();
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}
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}
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if (fallback && fallback.classList.contains('lazyload')) {
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fallback.addEventListener('lazybeforeunveil', mountPlayer, { once: true });
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} else {
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mountPlayer();
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}
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}
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function initToc(toc) {
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if (!once(toc, 'Toc')) return;
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var scope = document.querySelector('.article-content, .wp-posts-content, article .entry-content');
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var headings = scope ? Array.prototype.slice.call(scope.querySelectorAll('h2,h3,h4')) : [];
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var minimum = Number(toc.dataset.minHeadings || 3);
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var list = toc.querySelector('.aksrt-widget-toc__list');
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if (headings.length < minimum || !list) {
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toc.hidden = true;
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return;
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}
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headings.forEach(function (heading, index) {
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if (!heading.id) heading.id = 'aksrt-heading-' + (index + 1);
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var item = document.createElement('li');
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item.className = 'level-' + heading.tagName.toLowerCase();
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var link = document.createElement('a');
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link.href = '#' + heading.id;
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link.textContent = heading.textContent.trim();
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link.addEventListener('click', function (event) {
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event.preventDefault();
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window.scrollTo({ top: heading.getBoundingClientRect().top + window.scrollY - Number(toc.dataset.scrollOffset || 70), behavior: reducedMotion ? 'auto' : 'smooth' });
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history.replaceState(null, '', link.href);
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});
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item.appendChild(link);
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list.appendChild(item);
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});
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var empty = toc.querySelector('.aksrt-widget-toc__empty');
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if (empty) empty.remove();
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var toggle = toc.querySelector('.aksrt-widget-toc__toggle');
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if (toggle) toggle.addEventListener('click', function () {
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var expanded = toggle.getAttribute('aria-expanded') === 'true';
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toggle.setAttribute('aria-expanded', expanded ? 'false' : 'true');
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toc.classList.toggle('is-collapsed', expanded);
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});
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}
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function updateQuote(figure) {
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if (figure.dataset.source !== 'api' || !config.quoteUrl) return Promise.resolve();
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var button = figure.querySelector('button');
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if (button) button.disabled = true;
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return fetch(config.quoteUrl, { credentials: 'same-origin', headers: { Accept: 'application/json' } })
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.then(function (response) { if (!response.ok) throw new Error('quote'); return response.json(); })
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.then(function (data) {
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if (data && data.text) figure.querySelector('blockquote').textContent = data.text;
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})
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.catch(function () {})
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.finally(function () { if (button) button.disabled = false; });
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}
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function initQuote(figure) {
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if (!once(figure, 'Quote')) return;
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var button = figure.querySelector('button');
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if (button) button.addEventListener('click', function () { updateQuote(figure); });
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if (!reducedMotion && figure.dataset.source === 'api') {
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window.setInterval(function () { if (!document.hidden) updateQuote(figure); }, Math.max(5, Number(figure.dataset.interval || 30)) * 1000);
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}
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}
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function errorMarkup() {
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var i18n = config.i18n || {};
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return '<div class="aksrt-widget-request-error" role="alert"><span>' + (i18n.error || '加载失败，请重试。') + '</span><button type="button" data-widget-retry>' + (i18n.retry || '重试') + '</button></div>';
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}
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function itemsUrl(widget, instance, page, segment) {
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var base = String(config.restUrl || '').replace(/\/$/, '');
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var url = base + '/' + encodeURIComponent(widget) + '/items?instance=' + encodeURIComponent(instance) + '&page=' + encodeURIComponent(page);
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if (segment !== undefined && segment !== '') url += '&segment=' + encodeURIComponent(segment);
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return url;
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}
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function loadItems(container, page, append) {
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var owner = container.closest('[data-widget]') || container;
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var widget = owner.dataset.widget || container.dataset.widget;
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var instance = owner.dataset.instance || container.dataset.instance;
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var segment = container.dataset.segment || owner.dataset.segment || '';
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if (!widget || !instance || !config.restUrl || container.dataset.loading === '1') return;
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container.dataset.loading = '1';
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container.classList.add('is-loading');
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container.setAttribute('aria-busy', 'true');
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fetch(itemsUrl(widget, instance, page, segment), { credentials: 'same-origin', headers: { Accept: 'application/json' } })
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.then(function (response) { if (!response.ok) throw new Error('items'); return response.json(); })
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.then(function (data) {
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var oldPagination = container.querySelector('.aksrt-widget-pagination, .aksrt-widget-load-more');
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if (oldPagination) oldPagination.remove();
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var fragment = document.createElement('div');
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fragment.innerHTML = String(data.html || '');
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if (append) {
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var target = container.querySelector('.aksrt-widget-posts, .posts-row, .swiper-wrapper') || container;
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var source = fragment.querySelector('.aksrt-widget-posts, .posts-row, .swiper-wrapper');
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Array.prototype.slice.call((source || fragment).children).forEach(function (node) { target.appendChild(node); });
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} else {
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container.innerHTML = fragment.innerHTML;
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}
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if (data.paginate_html) container.insertAdjacentHTML('beforeend', data.paginate_html);
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container.dataset.page = String(data.page || page);
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scan(container);
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})
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.catch(function () { container.innerHTML = errorMarkup(); })
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.finally(function () {
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delete container.dataset.loading;
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container.classList.remove('is-loading');
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container.setAttribute('aria-busy', 'false');
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});
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}
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function initItems(container) {
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if (!once(container, 'Items')) return;
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if (container.classList.contains('is-loading')) loadItems(container, 1, false);
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container.addEventListener('click', function (event) {
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var retry = event.target.closest('[data-widget-retry]');
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var more = event.target.closest('.aksrt-widget-load-more');
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var pageButton = event.target.closest('[data-widget-page]');
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if (retry) loadItems(container, Number(container.dataset.page || 1), false);
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if (more) loadItems(container, Number(more.dataset.nextPage || 2), true);
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if (pageButton) loadItems(container, Number(pageButton.dataset.widgetPage || 1), false);
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});
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}
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function initTabs(tabs) {
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if (!once(tabs, 'Tabs')) return;
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tabs.addEventListener('keydown', function (event) { moveTabFocus(event, tabs); });
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tabs.addEventListener('click', function (event) {
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var button = event.target.closest('[data-segment]');
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if (!button) return;
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tabs.querySelectorAll('[role="tab"]').forEach(function (tab) {
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tab.setAttribute('aria-selected', tab === button ? 'true' : 'false');
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tab.setAttribute('tabindex', tab === button ? '0' : '-1');
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});
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var panel = tabs.querySelector('[data-widget-items]');
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panel.dataset.segment = button.dataset.segment;
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panel.setAttribute('aria-labelledby', button.id);
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loadItems(panel, 1, false);
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});
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}
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function initFaq(faq) {
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if (!once(faq, 'Faq')) return;
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faq.addEventListener('click', function (event) {
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var button = event.target.closest('.aksrt-faq__item > button');
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if (!button) return;
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var expanded = button.getAttribute('aria-expanded') === 'true';
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button.setAttribute('aria-expanded', expanded ? 'false' : 'true');
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var panel = document.getElementById(button.getAttribute('aria-controls'));
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if (panel) panel.hidden = expanded;
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});
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var search = faq.querySelector('input[type="search"]');
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if (search) search.addEventListener('input', function () {
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var needle = search.value.trim().toLowerCase();
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faq.querySelectorAll('.aksrt-faq__item').forEach(function (item) { item.hidden = needle && String(item.dataset.search || '').toLowerCase().indexOf(needle) === -1; });
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});
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}
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function initFeatures(features) {
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if (!once(features, 'Features')) return;
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features.addEventListener('keydown', function (event) { moveTabFocus(event, features); });
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features.addEventListener('click', function (event) {
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var button = event.target.closest('[data-feature-index]');
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if (!button) return;
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var index = button.dataset.featureIndex;
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features.querySelectorAll('[data-feature-index]').forEach(function (tab) {
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tab.setAttribute('aria-selected', tab === button ? 'true' : 'false');
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tab.setAttribute('tabindex', tab === button ? '0' : '-1');
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});
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features.querySelectorAll('[data-feature-panel]').forEach(function (panel) { panel.hidden = panel.dataset.featurePanel !== index; });
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});
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}
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function initCount(el) {
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if (!once(el, 'Count') || reducedMotion) return;
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var raw = el.dataset.countUp || '';
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var match = raw.match(/-?[0-9]+(?:\.[0-9]+)?/);
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if (!match) return;
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var target = Number(match[0]);
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var prefix = raw.slice(0, match.index);
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var suffix = raw.slice(match.index + match[0].length);
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var start = performance.now();
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function frame(now) {
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var progress = Math.min(1, (now - start) / 900);
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el.textContent = prefix + Math.round(target * (1 - Math.pow(1 - progress, 3))) + suffix;
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if (progress < 1) requestAnimationFrame(frame);
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}
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requestAnimationFrame(frame);
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}
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function scan(root) {
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var scope = root || document;
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scope.querySelectorAll('.aksrt-widget-video[data-video-url]').forEach(initVideo);
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scope.querySelectorAll('.aksrt-widget-toc').forEach(initToc);
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scope.querySelectorAll('.aksrt-widget-quote').forEach(initQuote);
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scope.querySelectorAll('[data-widget-items]').forEach(initItems);
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scope.querySelectorAll('.aksrt-widget-tabs').forEach(initTabs);
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scope.querySelectorAll('.aksrt-faq').forEach(initFaq);
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scope.querySelectorAll('.aksrt-feature-intro').forEach(initFeatures);
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scope.querySelectorAll('[data-count-up]').forEach(initCount);
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if (typeof window.VanillaTilt !== 'undefined') scope.querySelectorAll('[data-aksrt-tilt]').forEach(function (el) { if (once(el, 'Tilt')) window.VanillaTilt.init(el); });
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}
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function ready() {
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scan(document);
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if ('MutationObserver' in window) {
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new MutationObserver(function (mutations) {
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mutations.forEach(function (mutation) { mutation.addedNodes.forEach(function (node) { if (node.nodeType === 1) scan(node); }); });
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}).observe(document.body, { childList: true, subtree: true });
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}
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}
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if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', ready);
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else ready();
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})();
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