309 lines
13 KiB
JavaScript
309 lines
13 KiB
JavaScript
/* common.js —— 全站通用交互
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* 功能：昼/夜主题切换、实时时钟、随机名言刷新、四大板块 hover 浮层、
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* 搜索栏（引擎下拉/清除/回车搜索）、复制到剪贴板、DOM 工具函数
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*/
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(function (global) {
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'use strict';
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/* ---------- 工具 ---------- */
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function $(sel, root) { return (root || document).querySelector(sel); }
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function $$(sel, root) { return Array.prototype.slice.call((root || document).querySelectorAll(sel)); }
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/* ---------- 主题（昼/夜） ---------- */
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var THEME_KEY = 'hp-theme';
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function currentTheme() {
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var saved = null;
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try { saved = localStorage.getItem(THEME_KEY); } catch (e) { /* ignore */ }
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if (saved === 'light' || saved === 'dark') return saved;
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// 未设置：跟随系统
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return (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) ? 'dark' : 'light';
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}
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function applyTheme(t, persist) {
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document.documentElement.setAttribute('data-theme', t);
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if (persist) {
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try { localStorage.setItem(THEME_KEY, t); } catch (e) { /* ignore */ }
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}
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var icons = $$('.js-theme-icon');
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icons.forEach(function (el) { el.textContent = (t === 'dark') ? '☀' : '☾'; });
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var btn = $('.js-theme-btn');
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if (btn) btn.title = (t === 'dark') ? '切换到白天模式' : '切换到黑夜模式';
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}
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function initTheme() {
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applyTheme(currentTheme(), false);
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$$('.js-theme-btn').forEach(function (btn) {
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btn.addEventListener('click', function () {
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var next = (document.documentElement.getAttribute('data-theme') === 'dark') ? 'light' : 'dark';
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applyTheme(next, true);
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});
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});
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if (window.matchMedia) {
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window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', function () {
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// 用户手动选过则不跟随系统变化
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try {
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if (!localStorage.getItem(THEME_KEY)) applyTheme(currentTheme(), false);
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} catch (e) { applyTheme(currentTheme(), false); }
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});
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}
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}
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/* ---------- 实时时钟 ---------- */
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function pad(n) { return (n < 10 ? '0' : '') + n; }
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function formatTime(d) {
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return d.getFullYear() + '-' + pad(d.getMonth() + 1) + '-' + pad(d.getDate()) + ' ' +
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pad(d.getHours()) + ':' + pad(d.getMinutes()) + ':' + pad(d.getSeconds());
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}
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function initClocks() {
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function tick() { $$('.js-clock').forEach(function (el) { el.textContent = formatTime(new Date()); }); }
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tick();
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setInterval(tick, 1000);
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}
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/* ---------- 名言条：点击格言本身切换 ---------- */
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function initQuoteRefresh() {
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$$('.js-quote').forEach(function (quote) {
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quote.addEventListener('click', function () {
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var list = $$('.js-quote-pool span', document); // 服务端把所有名言放入隐藏池
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if (!list.length) return;
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// 定位当前展示文本在池中的位置，避免换到下一条仍是同一条
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var currentText = quote.textContent;
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var cur = -1;
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for (var i = 0; i < list.length; i++) {
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if (list[i].textContent === currentText) { cur = i; break; }
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}
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var n = list.length;
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var idx = Math.floor(Math.random() * n);
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if (n > 1 && cur !== -1) {
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while (idx === cur) idx = (idx + 1) % n;
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}
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quote.textContent = list[idx].textContent;
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});
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});
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}
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/* ---------- 首页四大板块 hover 展开说明 ---------- */
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function initBoardHover() {
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var section = $('.js-boards');
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if (!section) return;
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var cards = $$('.js-board-card', section);
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var overlay = $('.js-board-panel', section);
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if (!cards.length || !overlay) return;
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var titleEl = $('.js-board-panel-title', overlay);
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var descEl = $('.js-board-panel-desc', overlay);
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var bodyEl = section;
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function showPanel(card) {
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var name = card.getAttribute('data-name') || '';
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var desc = card.getAttribute('data-desc') || '';
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var idx = cards.indexOf(card);
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if (titleEl) titleEl.textContent = name;
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if (descEl) descEl.textContent = desc;
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overlay.classList.remove('panel-left', 'panel-right');
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// 第 0 / 1 块吸附左侧边缘，第 2 / 3 块吸附右侧边缘（实际板块位置不变）
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if (idx === 0 || idx === 1) overlay.classList.add('panel-left');
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else overlay.classList.add('panel-right');
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overlay.classList.add('visible');
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}
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cards.forEach(function (card) {
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card.addEventListener('mouseenter', function () { showPanel(card); });
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card.addEventListener('click', function () { /* 点击由 <a> 包裹，这里无额外处理 */ });
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});
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section.addEventListener('mouseleave', function () { overlay.classList.remove('visible'); });
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}
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/* ---------- 搜索栏 ---------- */
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var DEFAULT_ENGINES = [
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{ key: 'bing', name: 'Bing', icon: 'B', url: 'https://www.bing.com/search?q={kw}' },
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{ key: 'baidu', name: '百度', icon: '度', url: 'https://www.baidu.com/s?wd={kw}' },
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{ key: 'github', name: 'GitHub', icon: 'G', url: 'https://github.com/search?q={kw}' },
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{ key: 'google', name: 'Google', icon: 'G', url: 'https://www.google.com/search?q={kw}' }
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];
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function initSearch() {
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var box = $('.js-search');
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if (!box) return;
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var cfg = null;
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try { cfg = JSON.parse(box.getAttribute('data-engines') || 'null'); } catch (e) { cfg = null; }
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var engines = (cfg && cfg.length) ? cfg : DEFAULT_ENGINES;
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var curKey = box.getAttribute('data-engine') || engines[0].key;
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var cur = engines.filter(function (e) { return e.key === curKey; })[0] || engines[0];
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var input = $('.js-search-input', box);
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var clearBtn = $('.js-search-clear', box);
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var engineBtn = $('.js-engine-btn', box);
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var engineName = $('.js-engine-name', box);
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var menu = $('.js-engine-menu', box);
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function setEngine(e) {
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cur = e;
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// 按钮区域只显示图标（全称在展开下拉列表时展示）
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if (engineName) engineName.textContent = e.icon || '';
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if (engineBtn) engineBtn.title = '搜索引擎：' + e.name;
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box.setAttribute('data-engine', e.key);
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hideMenu();
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}
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function showMenu() {
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if (!menu) return;
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if (!menu.children.length) {
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engines.forEach(function (e) {
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var li = document.createElement('li');
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li.textContent = e.icon + ' ' + e.name;
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li.className = (e.key === cur.key) ? 'active' : '';
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li.addEventListener('click', function () { setEngine(e); });
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menu.appendChild(li);
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});
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}
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menu.classList.add('open');
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}
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function hideMenu() { if (menu) menu.classList.remove('open'); }
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function updateClear() {
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if (clearBtn) clearBtn.style.visibility = (input && input.value) ? 'visible' : 'hidden';
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}
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function doSearch() {
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var kw = (input ? input.value : '').trim();
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if (!kw) { if (input) input.focus(); return; }
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window.open(cur.url.replace('{kw}', encodeURIComponent(kw)), '_blank', 'noopener');
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}
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if (engineBtn) engineBtn.addEventListener('click', function (ev) {
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ev.stopPropagation();
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if (menu && menu.classList.contains('open')) hideMenu(); else showMenu();
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});
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if (clearBtn) clearBtn.addEventListener('click', function () {
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if (input) { input.value = ''; input.focus(); }
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updateClear();
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});
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if (input) {
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input.addEventListener('input', updateClear);
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input.addEventListener('keydown', function (ev) { if (ev.key === 'Enter') doSearch(); });
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}
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document.addEventListener('click', function () { hideMenu(); });
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var goBtn = $('.js-search-go', box);
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if (goBtn) goBtn.addEventListener('click', doSearch);
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setEngine(cur);
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updateClear();
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}
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/* ---------- 后台图标控件：文本 / 图片上传（≤200KB → dataURL） ---------- */
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function isIconImage(v) {
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v = String(v || '').trim();
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if (!v) return false;
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if (/^data:image\//i.test(v) || /^https?:\/\//i.test(v)) return true;
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if (/\.(png|jpe?g|gif|svg|webp)(\?|#|$)/i.test(v)) return true;
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return v.charAt(0) === '/' || v.indexOf('./') === 0 || v.indexOf('../') === 0;
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}
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function updateIconPreview(ctl) {
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var input = ctl.querySelector('.icon-input');
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var box = ctl.querySelector('.icon-preview');
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if (!input || !box) return;
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var v = input.value.trim();
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box.innerHTML = '';
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if (!v) return; // 空：显示空心占位框
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if (isIconImage(v)) {
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var img = document.createElement('img');
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img.src = v;
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img.alt = '';
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img.loading = 'lazy';
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box.appendChild(img);
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} else {
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box.textContent = v;
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}
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}
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function initIconControls() {
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// 点击“上传”→ 触发隐藏 file
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document.addEventListener('click', function (ev) {
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var btn = ev.target && ev.target.closest ? ev.target.closest('.icon-upload') : null;
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if (!btn) return;
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var ctl = btn.closest('.icon-ctl');
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var file = ctl ? ctl.querySelector('.icon-file') : null;
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if (file) file.click();
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});
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// 选择图片 → 校验并转 dataURL 写入同控件文本框
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document.addEventListener('change', function (ev) {
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var file = ev.target;
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if (!file || !file.classList || !file.classList.contains('icon-file')) return;
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var ctl = file.closest('.icon-ctl');
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var input = ctl ? ctl.querySelector('.icon-input') : null;
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var f = file.files && file.files[0];
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function reset() { file.value = ''; }
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if (!f) return;
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if (f.type.indexOf('image/') !== 0) { alert('请选择图片文件。'); reset(); return; }
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if (f.size > 200 * 1024) { alert('图片不能超过 200KB。'); reset(); return; }
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var rd = new FileReader();
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rd.onload = function () {
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if (input) {
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input.value = rd.result;
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updateIconPreview(ctl);
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}
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reset();
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};
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rd.onerror = function () { alert('图片读取失败，请重试。'); reset(); };
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rd.readAsDataURL(f);
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});
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// 手动输入文本 → 实时预览
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document.addEventListener('input', function (ev) {
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var t = ev.target;
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if (t && t.classList && t.classList.contains('icon-input')) {
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updateIconPreview(t.closest('.icon-ctl'));
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}
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});
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// 初始化页面既有控件预览
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$$('.icon-ctl').forEach(updateIconPreview);
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}
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/* ---------- 复制 ---------- */
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function copyText(text, btnEl) {
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function done(ok) {
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if (!btnEl) return;
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var old = btnEl.textContent;
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btnEl.textContent = ok ? '✓ 已复制' : '复制失败';
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setTimeout(function () { btnEl.textContent = old; }, 1500);
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}
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if (navigator.clipboard && navigator.clipboard.writeText) {
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navigator.clipboard.writeText(text).then(function () { done(true); }, function () { fallbackCopy(text, done); });
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} else {
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fallbackCopy(text, done);
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}
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}
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function fallbackCopy(text, done) {
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var ta = document.createElement('textarea');
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ta.value = text;
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ta.style.cssText = 'position:fixed;opacity:0;';
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document.body.appendChild(ta);
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ta.select();
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try { done(document.execCommand('copy')); } catch (e) { done(false); }
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document.body.removeChild(ta);
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}
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function initCopyButtons() {
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document.addEventListener('click', function (ev) {
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var btn = ev.target.closest ? ev.target.closest('.js-copy') : null;
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if (!btn) return;
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var text = btn.getAttribute('data-copy');
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if (text === null || text === undefined) {
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var target = $(btn.getAttribute('data-target') || '');
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text = target ? target.value : '';
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}
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copyText(text, btn);
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});
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}
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/* ---------- 自动初始化 ---------- */
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document.addEventListener('DOMContentLoaded', function () {
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initTheme();
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initClocks();
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initQuoteRefresh();
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initBoardHover();
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initSearch();
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initIconControls();
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initCopyButtons();
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});
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global.HomePage = {
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$: $, $$: $$, copyText: copyText, applyTheme: applyTheme, currentTheme: currentTheme
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};
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})(window);
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