91 lines
3.3 KiB
JavaScript
91 lines
3.3 KiB
JavaScript
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/* 简航 SimpleNav —— 前台交互：搜索引擎切换 + 联想下拉 + 合集标签页 */
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(function () {
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'use strict';
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var cfg = window.SIMPLENAV || {};
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/* ---------- 搜索引擎切换 ---------- */
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var tabs = document.querySelectorAll('#engine-tabs .s-engine');
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var form = document.getElementById('search-form');
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var input = document.getElementById('search-text');
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function activateEngine(el) {
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tabs.forEach(function (t) { t.classList.remove('active'); });
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el.classList.add('active');
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var search = el.getAttribute('data-search');
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var param = el.getAttribute('data-param');
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var slug = el.getAttribute('data-slug');
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var ph = el.getAttribute('data-placeholder') || '搜索';
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if (form) { form.setAttribute('action', search); }
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if (input) { input.setAttribute('name', param); input.setAttribute('placeholder', ph); }
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form.setAttribute('data-slug', slug);
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hideWord();
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}
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tabs.forEach(function (el) {
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el.addEventListener('click', function () { activateEngine(el); input && input.focus(); });
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});
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/* ---------- 联想下拉 ---------- */
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var word = document.getElementById('word');
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var timer = null;
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var lastQ = '';
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function hideWord() { if (word) { word.innerHTML = ''; word.style.display = 'none'; } }
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function showWord(items) {
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if (!word) return;
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if (!items || !items.length) { hideWord(); return; }
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word.innerHTML = items.map(function (t) {
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var d = document.createElement('div');
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d.textContent = t;
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return '<li>' + d.innerHTML + '</li>';
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}).join('');
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word.style.display = 'block';
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}
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if (input) {
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input.addEventListener('input', function () {
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var q = input.value.trim();
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if (q === '') { hideWord(); return; }
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if (q === lastQ) return;
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lastQ = q;
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clearTimeout(timer);
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timer = setTimeout(function () {
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var slug = form ? (form.getAttribute('data-slug') || '') : '';
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fetch(cfg.suggest + '?slug=' + encodeURIComponent(slug) + '&q=' + encodeURIComponent(q))
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.then(function (r) { return r.json(); })
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.then(function (data) { showWord(data && data.items); })
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.catch(function () { hideWord(); });
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}, 180);
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});
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input.addEventListener('keydown', function (e) {
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if (e.key === 'Enter' && word && word.style.display === 'block' && word.firstChild) {
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// 默认走第一条建议
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input.value = word.firstChild.textContent;
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hideWord();
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}
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});
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}
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document.addEventListener('click', function (e) {
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if (word && !word.contains(e.target) && e.target !== input) { hideWord(); }
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var li = e.target.closest ? e.target.closest('#word li') : null;
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if (li) {
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input.value = li.textContent;
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hideWord();
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if (form) { form.submit(); }
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}
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});
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/* ---------- 合集标签页 ---------- */
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var collTabs = document.querySelectorAll('#coll-tabs .tab');
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collTabs.forEach(function (tab) {
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tab.addEventListener('click', function () {
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collTabs.forEach(function (t) { t.classList.remove('active'); });
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tab.classList.add('active');
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document.querySelectorAll('.tab-panel').forEach(function (p) { p.classList.remove('active'); });
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var panel = document.getElementById(tab.getAttribute('data-target'));
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if (panel) { panel.classList.add('active'); }
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});
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});
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})();
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