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(function () { 'use strict'; const SETTING_KEY = 'cssMap' const RAND = (Math.random() * 100000).toFixed(0) const debug = function (...args) { if (GM_getValue('debug', 'false') === 'true') { console.log(...args) } } const on = function (eventName, selector, handler) { document.addEventListener(eventName, function (e) { for (let target = e.target; target && target !== this; target = target.parentNode) { if (target.matches !== undefined && target.matches(selector)) { handler.call(target, e); break; } if (target.tagName === 'HTML') { break; } } }, false); } debug('Hello, Inject CSS.')
function start() { const cssMap = cssValue() const html = document.getElementsByTagName('html')[0] const inject = `<div id="inject-watermark-${RAND}" class="inject-watermark"></div><style> #inject-watermark-${RAND} { position: fixed; left: 0; top: 0; right: 0; bottom: 0; z-index: 1; pointer-events: none; } #inject-css-${RAND} { display: none; position: fixed; left: 0; top: 0; right: 0; bottom: 0; z-index: 999; background-color: rgba(0,0,0,.8); justify-content: center; align-items: center; font-size: 16px; } #inject-css-setting { max-height: 100%; overflow: auto; color: #000; } #inject-css-setting button { border: 1px solid #ccc; background-color: #fff; cursor: pointer; padding: .5em; border-top-left-radius: 5px; border-top-right-radius: 5px; } #inject-css-setting table { border-collapse: collapse; background-color: #fff; } #inject-css-setting th, #inject-css-setting td { border: 1px solid #ccc; padding: .5em; max-width: 50vw; overflow: auto; } #inject-css-setting tr.active { font-weight: bold; } #inject-css-setting td.active:after { content: ' ⭐️'; } #inject-css-setting tr:nth-child(even) { background-color: #f2f2f2; } #inject-css-setting tr:hover { background-color: #ddd; } #inject-css-setting .inject-css-delete,#inject-css-setting .inject-css-add { width: 100%; border-radius: 5px; } </style><div id="inject-css-${RAND}"></div>` html.insertAdjacentHTML('beforeend', inject) const wrapper = document.getElementById(`inject-css-${RAND}`) GM_registerMenuCommand('Settings|设置', function (e) { debug('Settings', e) wrapper.style.display = 'flex' }, 's') render(cssMap, wrapper) on('click', '.inject-css-delete', function (e) { const deleteKey = e.target.dataset.key cssMap.delete(deleteKey) save(cssMap) render(cssMap, wrapper) }) on('click', '.inject-css-add', function (e) { e.preventDefault() const k = document.querySelector('#inject-css-url').value.trim() const v = document.querySelector('#inject-css-value').value.trim() if (k !== '' && v !== '') { try { new RegExp(k) } catch (e) { alert('`' + k + '`: 不是有效的正则表达式. error=' + e) return } cssMap.set(k, v) save(cssMap) render(cssMap, wrapper) } }) on('click', '.inject-css-hide', function () { wrapper.style.display = 'none' }) on('keyup', 'html', function (e) { if (e.code === 'Escape') { wrapper.style.display = 'none' } } ) document.querySelector('.inject-css-hide').click() }
function cssValue() { const settingValue = GM_getValue(SETTING_KEY, '{}'); debug('setting value:', settingValue) let cssMap = JSON.parse(settingValue) cssMap = new Map(Object.entries(cssMap)) return cssMap }
function save(cssMap) { const s = JSON.stringify(Object.fromEntries(cssMap)); GM_setValue(SETTING_KEY, s) debug('saved', s, 'get:', cssValue()) }
function render(cssMap, wrapper) { const url = window.location.href debug('cssMap:', cssMap, 'url:', url) let injectCss = `` let tableBody = '' for (const entry of cssMap) { try { let active = '' if (new RegExp(entry[0]).test(url)) { injectCss += entry[1] + "\n" active = 'active' } tableBody += `<tr class="${active}"><td class="${active}"><code>${entry[0]}</code></td><td><pre>${entry[1]}</pre></td><td><button data-key="${entry[0]}" class="inject-css-delete">-</button></td></tr>` } catch (e) { debug('regexp error', e) cssMap.delete(entry[0]) } } wrapper.innerHTML = `<style>${injectCss}</style><div id="inject-css-setting"><button class="inject-css-hide">关闭(Esc)</button> <table><tbody><tr><th>URL 正则</th><th>注入 CSS</th><th>操作</th></tr> ${tableBody} <tr><td><label><input type="text" id="inject-css-url" placeholder="点号斜线记得转义"></label></td> <td><textarea id="inject-css-value" cols="30" rows="3" placeholder="html { background-color: #ccc; }"></textarea></td> <td><button class="inject-css-add">+</button></td></tr> </tbody></table></div>` }
setTimeout(start, 2000)
})();
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