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483 lines (419 loc) · 15.8 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="theme-color" content="#FFFFFF">
<meta name="color-scheme" content="light">
<title>HTML 编辑器</title>
<!-- 异步加载字体 -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;500&family=Roboto+Mono:wght@400&display=swap" rel="stylesheet" media="print" onload="this.media='all'">
<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200" rel="stylesheet" media="print" onload="this.media='all'">
<noscript>
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;500&family=Roboto+Mono:wght@400&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200" rel="stylesheet">
</noscript>
<style>
:root {
--md-sys-color-primary-container: #EADDFF;
--md-sys-color-on-primary-container: #21005D;
--md-sys-color-outline: #79747E;
--md-sys-color-surface-variant: #F3EDF7;
--md-sys-color-on-surface: #1D1B20;
--md-sys-typescale-body: 'Roboto', sans-serif;
--md-sys-typescale-code: 'Roboto Mono', monospace;
}
* {
-webkit-tap-highlight-color: transparent;
box-sizing: border-box;
}
@keyframes force-show {
0% { opacity: 0; }
100% { opacity: 1; }
}
html, body {
margin: 0;
padding: 0;
background-color: #FFFFFF;
color: #1D1B20;
height: 100dvh;
width: 100vw;
overflow: hidden;
display: flex;
flex-direction: column;
opacity: 0;
animation: force-show 0.5s ease-in 1.5s forwards;
}
body.js-loaded {
animation: none;
opacity: 1;
transition: opacity 0.4s ease;
}
.app-container {
display: flex;
flex-direction: column;
width: 100%;
height: 100%;
position: relative;
max-width: none;
}
.editor-wrapper {
flex-grow: 1;
padding: 0;
display: flex;
flex-direction: column;
overflow: hidden;
position: relative;
}
#visualEditor {
width: 100%;
height: 100%;
border: none;
outline: none;
padding: 16px;
padding-bottom: 180px; /* 增加底部留白，防止被面板遮挡 */
font-size: 16px;
line-height: 1.6;
color: #1D1B20;
resize: none;
overflow-y: auto;
-webkit-overflow-scrolling: touch;
display: block;
font-family: var(--md-sys-typescale-body);
}
#visualEditor:empty:before {
content: attr(data-placeholder);
color: var(--md-sys-color-outline);
opacity: 0.6;
display: block;
}
/* 图片在编辑器中最大宽度限制，防止撑破布局 */
#visualEditor img {
max-width: 100%;
height: auto;
}
#codeEditor {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border: none;
outline: none;
padding: 16px;
padding-top: 20px;
padding-bottom: 140px;
font-family: var(--md-sys-typescale-code);
white-space: pre;
font-size: 13px;
color: #333;
background-color: #FFFFFF !important;
resize: none;
overflow-y: auto;
-webkit-overflow-scrolling: touch;
display: none;
z-index: 10;
}
.switch-container {
position: absolute;
bottom: 30px;
width: 100%;
display: flex;
justify-content: center;
pointer-events: none;
z-index: 20;
}
.segmented-switch {
pointer-events: auto;
display: flex;
background-color: var(--md-sys-color-surface-variant);
border-radius: 50px;
padding: 4px;
height: 56px;
box-shadow: 0 4px 8px rgba(0,0,0,0.12);
}
.segment-btn {
border: none;
background: transparent;
display: flex;
align-items: center;
justify-content: center;
gap: 8px;
cursor: pointer;
font-family: var(--md-sys-typescale-body);
font-size: 14px;
font-weight: 500;
color: #49454F;
padding: 0 24px;
border-radius: 50px;
min-width: 110px;
transition: all 0.2s ease;
}
.segment-btn.active {
background-color: var(--md-sys-color-primary-container);
color: var(--md-sys-color-on-primary-container);
box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.material-symbols-outlined {
font-family: 'Material Symbols Outlined';
font-weight: normal;
font-style: normal;
font-size: 20px;
line-height: 1;
letter-spacing: normal;
text-transform: none;
display: inline-block;
white-space: nowrap;
word-wrap: normal;
direction: ltr;
}
/* --- 新增：属性检查器面板样式 --- */
#inspectorPanel {
position: absolute;
bottom: 100px; /* 位于切换按钮上方 */
left: 16px;
right: 16px;
background-color: #2b2930; /* 深色背景，突出显示 */
color: #f2f0f4;
border-radius: 12px;
padding: 12px 16px;
box-shadow: 0 4px 12px rgba(0,0,0,0.2);
z-index: 30;
display: none; /* 默认隐藏 */
flex-direction: column;
gap: 8px;
font-family: var(--md-sys-typescale-code);
font-size: 12px;
animation: slideUp 0.2s ease-out;
}
@keyframes slideUp {
from { transform: translateY(10px); opacity: 0; }
to { transform: translateY(0); opacity: 1; }
}
.inspector-header {
display: flex;
justify-content: space-between;
align-items: center;
border-bottom: 1px solid rgba(255,255,255,0.2);
padding-bottom: 8px;
margin-bottom: 4px;
}
.inspector-tag {
font-weight: bold;
color: #d0bcff;
text-transform: uppercase;
font-size: 14px;
}
.inspector-close {
background: none;
border: none;
color: rgba(255,255,255,0.7);
cursor: pointer;
padding: 4px;
margin: -4px;
}
.inspector-row {
display: flex;
flex-direction: column;
gap: 2px;
word-break: break-all;
}
.inspector-label {
color: rgba(255,255,255,0.6);
font-size: 10px;
}
.inspector-value {
color: #e6e1e5;
background: rgba(255,255,255,0.1);
padding: 4px 6px;
border-radius: 4px;
user-select: text; /* 允许复制 */
}
</style>
</head>
<body>
<div class="app-container">
<div class="editor-wrapper">
<div id="visualEditor" contenteditable="true" data-placeholder="在此粘贴内容..."></div>
<textarea id="codeEditor" spellcheck="false"></textarea>
<!-- 新增：属性检查器面板 -->
<div id="inspectorPanel">
<div class="inspector-header">
<span id="inspectorTag" class="inspector-tag">TAG</span>
<button id="inspectorClose" class="inspector-close">
<span class="material-symbols-outlined" style="font-size: 18px;">close</span>
</button>
</div>
<div id="inspectorContent">
<!-- 动态内容将插入这里 -->
</div>
</div>
</div>
<div class="switch-container">
<div class="segmented-switch">
<button id="btnVisual" class="segment-btn active">
<span class="material-symbols-outlined">visibility</span>
<span class="btn-text">预览</span>
</button>
<button id="btnCode" class="segment-btn">
<span class="material-symbols-outlined">code</span>
<span class="btn-text">代码</span>
</button>
</div>
</div>
</div>
<script>
// --- 1. 国际化 (i18n) 处理 ---
const userLang = navigator.language || navigator.userLanguage;
const isChinese = userLang.startsWith('zh');
const i18n = {
title: isChinese ? "HTML 编辑器" : "HTML Editor",
placeholder: isChinese ? "在此粘贴内容..." : "Paste content here...",
preview: isChinese ? "预览" : "Preview",
code: isChinese ? "代码" : "Code",
style: isChinese ? "样式" : "Style",
src: isChinese ? "图片源" : "Source",
href: isChinese ? "链接" : "Link",
class: isChinese ? "类名" : "Class"
};
(function() {
if (!isChinese) {
document.title = i18n.title;
const visualEditor = document.getElementById('visualEditor');
if (visualEditor) visualEditor.setAttribute('data-placeholder', i18n.placeholder);
const btnVisualText = document.querySelector('#btnVisual .btn-text');
if (btnVisualText) btnVisualText.textContent = i18n.preview;
const btnCodeText = document.querySelector('#btnCode .btn-text');
if (btnCodeText) btnCodeText.textContent = i18n.code;
document.documentElement.lang = "en";
}
})();
// --- 2. 智能显示逻辑 ---
function showApp() {
document.body.classList.add('js-loaded');
}
if (document.fonts && document.fonts.ready) {
document.fonts.ready.then(showApp).catch(showApp);
} else {
showApp();
}
// --- 3. 编辑器核心逻辑 ---
const visualEditor = document.getElementById('visualEditor');
const codeEditor = document.getElementById('codeEditor');
const btnVisual = document.getElementById('btnVisual');
const btnCode = document.getElementById('btnCode');
// 检查器相关元素
const inspectorPanel = document.getElementById('inspectorPanel');
const inspectorTag = document.getElementById('inspectorTag');
const inspectorContent = document.getElementById('inspectorContent');
const inspectorClose = document.getElementById('inspectorClose');
let isCodeView = false;
const voidTags = ['area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source', 'track', 'wbr'];
// --- 新增：点击元素显示属性逻辑 ---
visualEditor.addEventListener('click', (e) => {
// 如果点击的是编辑器本身（空白处），则隐藏面板
if (e.target === visualEditor) {
inspectorPanel.style.display = 'none';
return;
}
// 如果是链接，阻止默认跳转行为，方便编辑和查看
if (e.target.tagName === 'A') {
e.preventDefault();
}
const target = e.target;
const tagName = target.tagName.toLowerCase();
// 准备显示的数据
let infoHtml = '';
// 1. 获取 src (针对图片)
if (target.hasAttribute('src')) {
infoHtml += createInspectorRow(i18n.src, target.getAttribute('src'));
}
// 2. 获取 href (针对链接)
if (target.hasAttribute('href')) {
infoHtml += createInspectorRow(i18n.href, target.getAttribute('href'));
}
// 3. 获取 style (内联样式)
if (target.hasAttribute('style')) {
infoHtml += createInspectorRow(i18n.style, target.getAttribute('style'));
}
// 4. 获取 class
if (target.className && typeof target.className === 'string') {
infoHtml += createInspectorRow(i18n.class, target.className);
}
// 如果没有任何特殊属性，显示提示或仅显示标签
if (infoHtml === '') {
// 也可以选择不显示面板，或者显示“无内联样式”
// 这里我们选择显示面板，方便用户确认选中了什么
infoHtml = `<div class="inspector-row"><span class="inspector-label">Info</span><span class="inspector-value">No inline styles</span></div>`;
}
// 更新 UI
inspectorTag.textContent = `<${tagName}>`;
inspectorContent.innerHTML = infoHtml;
inspectorPanel.style.display = 'flex';
});
// 辅助函数：创建面板行 HTML
function createInspectorRow(label, value) {
// 简单的转义防止 XSS
const safeValue = value.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/"/g, """).replace(/'/g, "'");
return `
<div class="inspector-row">
<span class="inspector-label">${label}</span>
<span class="inspector-value">${safeValue}</span>
</div>
`;
}
// 关闭面板
inspectorClose.addEventListener('click', () => {
inspectorPanel.style.display = 'none';
});
// 切换到代码模式时隐藏面板
function hideInspector() {
inspectorPanel.style.display = 'none';
}
// --- 格式化 HTML ---
function formatHTML(html) {
const tab = ' ';
let result = '';
let indent = '';
html = html.replace(/[\r\n]+/g, ' ').replace(/>\s+</g, '><').trim();
const tokens = html.split(/(<[^>]+>)/g).filter(s => s.trim() !== '');
tokens.forEach(token => {
let isClosing = token.startsWith('</');
let isOpening = token.startsWith('<') && !isClosing;
if (!token.startsWith('<')) token = token.trim();
if (token.length === 0) return;
let tagName = '';
if (isOpening) {
const match = token.match(/^<([a-z0-9]+)/i);
if (match) tagName = match[1].toLowerCase();
}
if (isClosing) indent = indent.substring(tab.length);
result += indent + token + '\n';
if (isOpening && !voidTags.includes(tagName) && !token.includes('/>')) indent += tab;
});
return result.trim();
}
btnVisual.addEventListener('click', () => {
if (!isCodeView) return;
visualEditor.innerHTML = codeEditor.value;
codeEditor.style.display = 'none';
btnVisual.classList.add('active');
btnCode.classList.remove('active');
isCodeView = false;
});
btnCode.addEventListener('click', () => {
if (isCodeView) return;
hideInspector(); // 切换时隐藏面板
const rawHTML = visualEditor.innerHTML;
codeEditor.value = formatHTML(rawHTML);
codeEditor.style.display = 'block';
visualEditor.innerHTML = '';
btnCode.classList.add('active');
btnVisual.classList.remove('active');
isCodeView = true;
});
</script>
</body>
</html>