Victor_Jay
fe81c879b0
- 新增 cdnjs.cloudflare.com CSP 白名单，允许加载 highlight.js - 消毒策略放行 span 元素，保留 highlight.js 高亮 class - 详情页和新帖子页引入 highlight.js 库和 GitHub 主题 - 代码块语言选择器默认 text，支持 prev/next 循环切换语言 - 代码块语言标签注入兼容 data-language 和 code class 双来源 - 修复 utils.js defer 导致 common.js 执行时 getCSRFToken 未定义
415 lines
14 KiB
JavaScript
415 lines
14 KiB
JavaScript
/**
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* MetaLab Editor — Tiptap 所见即所得编辑器
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*
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* Tiptap 基于 ProseMirror，输出 HTML，无需 Markdown 知识即可使用。
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* 后端存储 HTML，通过 bluemonday 消毒确保安全。
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*
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* 安全模型：Tiptap → HTML（富文本）→ 后端 bluemonday 消毒 → 存储
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*/
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import { Editor } from '@tiptap/core'
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import StarterKit from '@tiptap/starter-kit'
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import Placeholder from '@tiptap/extension-placeholder'
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import Image from '@tiptap/extension-image'
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import CodeBlockLowlight from '@tiptap/extension-code-block-lowlight'
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import { common, createLowlight } from 'lowlight'
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// ---- 状态 ----
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let editor = null
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let currentHTML = ''
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let draftTimer = null
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let submitting = false
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// ---- 初始化 ----
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document.addEventListener('DOMContentLoaded', () => {
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const container = document.getElementById('editor-container')
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if (!container) return
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const postId = document.getElementById('postId')?.value
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const isEdit = !!postId
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// 从容器 data-content 属性获取初始 HTML 内容（由后端 SSR 渲染）
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const initialContent = container.dataset.content || ''
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currentHTML = initialContent
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editor = new Editor({
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element: container,
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extensions: [
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StarterKit.configure({
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heading: { levels: [1, 2, 3] },
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link: {
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openOnClick: false,
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HTMLAttributes: { rel: 'noopener noreferrer', target: '_blank' },
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},
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codeBlock: false,
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}),
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CodeBlockLowlight.configure({
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lowlight: createLowlight(common),
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defaultLanguage: null,
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}),
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Placeholder.configure({
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placeholder: '在此输入正文...',
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}),
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Image.configure({
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inline: true,
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}),
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],
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content: initialContent,
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onUpdate: ({ editor }) => {
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const html = editor.getHTML()
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// 忽略空内容（<p></p>）
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currentHTML = html === '<p></p>' ? '' : html
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updateWordCount(editor.getText())
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scheduleDraft(currentHTML)
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},
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})
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// 初始字数统计
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updateWordCount(editor.getText())
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// 恢复草稿（延迟确保编辑器完全初始化）
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if (!isEdit) {
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setTimeout(() => restoreDraft(), 100)
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}
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// 工具栏按钮绑定
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setupToolbar()
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// 全屏切换
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document.getElementById('btnFullscreen')?.addEventListener('click', toggleFullscreen)
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// 表单提交
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document.getElementById('postForm')?.addEventListener('submit', handleSubmit)
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// Ctrl+S / F11 快捷键
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document.addEventListener('keydown', handleKeyboard)
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})
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// ---- 工具栏 ----
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function setupToolbar() {
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const toolbar = document.getElementById('toolbar')
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if (!toolbar) return
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const actionMap = {
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bold: () => editor.chain().focus().toggleBold().run(),
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italic: () => editor.chain().focus().toggleItalic().run(),
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strike: () => editor.chain().focus().toggleStrike().run(),
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code: () => editor.chain().focus().toggleCode().run(),
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h1: () => editor.chain().focus().toggleHeading({ level: 1 }).run(),
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h2: () => editor.chain().focus().toggleHeading({ level: 2 }).run(),
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h3: () => editor.chain().focus().toggleHeading({ level: 3 }).run(),
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bulletList: () => editor.chain().focus().toggleBulletList().run(),
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orderedList: () => editor.chain().focus().toggleOrderedList().run(),
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blockquote: () => editor.chain().focus().toggleBlockquote().run(),
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codeBlock: () => editor.chain().focus().toggleCodeBlock().run(),
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horizontalRule: () => editor.chain().focus().setHorizontalRule().run(),
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undo: () => editor.chain().focus().undo().run(),
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redo: () => editor.chain().focus().redo().run(),
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}
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const activeCheck = {
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bold: () => editor.isActive('bold'),
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italic: () => editor.isActive('italic'),
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strike: () => editor.isActive('strike'),
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code: () => editor.isActive('code'),
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h1: () => editor.isActive('heading', { level: 1 }),
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h2: () => editor.isActive('heading', { level: 2 }),
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h3: () => editor.isActive('heading', { level: 3 }),
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bulletList: () => editor.isActive('bulletList'),
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orderedList: () => editor.isActive('orderedList'),
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blockquote: () => editor.isActive('blockquote'),
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codeBlock: () => editor.isActive('codeBlock'),
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}
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function updateActive() {
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toolbar.querySelectorAll('[data-action]').forEach(btn => {
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const action = btn.dataset.action
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const check = activeCheck[action]
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btn.classList.toggle('is-active', check ? check() : false)
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})
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}
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toolbar.addEventListener('click', (e) => {
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const btn = e.target.closest('[data-action]')
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if (!btn) return
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const action = btn.dataset.action
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if (actionMap[action]) {
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actionMap[action]()
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updateActive()
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}
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})
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// ---- 代码块语言选择器 ----
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const langSelect = document.getElementById('codeLangSelect')
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if (langSelect) {
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// 阻止 select 获取焦点导致编辑器失焦
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langSelect.addEventListener('mousedown', (e) => {
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e.preventDefault()
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// 手动切换选项
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const opts = langSelect.options
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let nextIdx = langSelect.selectedIndex + 1
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if (nextIdx >= opts.length) nextIdx = 0
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langSelect.selectedIndex = nextIdx
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const lang = opts[nextIdx].value
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// 在编辑器内更新代码块语言属性
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editor.chain().focus().updateAttributes('codeBlock', { language: lang === 'text' ? null : lang }).run()
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})
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// 当光标在代码块内时显示语言选择器并同步当前语言，移出时隐藏
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editor.on('selectionUpdate', () => {
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if (editor.isActive('codeBlock')) {
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langSelect.style.display = ''
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const attrs = editor.getAttributes('codeBlock')
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langSelect.value = attrs.language || 'text'
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} else {
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langSelect.style.display = 'none'
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}
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})
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}
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// ---- 代码块语言标签注入 ----
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// 为每个 <pre> 注入语言标签 DOM 元素（因为 CSS ::before 在 overflow:auto 容器中不可靠）
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// Tiptap CodeBlockLowlight 在 pre 上输出 data-language 属性，同时 code 上有 language-xxx class
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function injectCodeLangLabels() {
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const editorEl = document.querySelector('#editor-container .tiptap')
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if (!editorEl) return
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editorEl.querySelectorAll('pre').forEach(pre => {
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// 移除旧标签
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const old = pre.querySelector('.code-lang-label')
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if (old) old.remove()
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// 从 pre 的 data-language 或 code 的 class 中获取语言
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let lang = pre.getAttribute('data-language')
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if (!lang) {
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const code = pre.querySelector('code')
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if (code) {
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const match = code.className.match(/language-(\w+)/)
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if (match) lang = match[1]
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}
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}
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lang = lang || 'text'
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const label = document.createElement('div')
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label.className = 'code-lang-label'
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label.textContent = lang
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pre.insertBefore(label, pre.firstChild)
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pre.style.paddingTop = '32px'
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})
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}
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editor.on('update', injectCodeLangLabels)
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// 初始注入
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setTimeout(injectCodeLangLabels, 50)
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editor.on('selectionUpdate', updateActive)
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editor.on('update', updateActive)
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}
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// ---- 图片上传（拖拽/粘贴） ----
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// Tiptap 默认支持图片拖入，但我们需要上传到服务器并替换 src
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// 通过监听 editor 的 drop/paste 事件处理图片
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document.addEventListener('DOMContentLoaded', () => {
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// 延迟绑定，等 editor 初始化
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setTimeout(() => {
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const editorEl = document.querySelector('#editor-container .tiptap')
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if (!editorEl) return
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// 粘贴图片
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editorEl.addEventListener('paste', async (e) => {
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const items = e.clipboardData?.items
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if (!items) return
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for (const item of items) {
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if (item.type.startsWith('image/')) {
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e.preventDefault()
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const file = item.getAsFile()
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const url = await uploadSingleImage(file)
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if (url) {
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editor.chain().focus().setImage({ src: url }).run()
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}
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break
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}
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}
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})
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// 拖入图片
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editorEl.addEventListener('drop', async (e) => {
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const files = e.dataTransfer?.files
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if (!files || files.length === 0) return
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const imageFiles = Array.from(files).filter(f => f.type.startsWith('image/'))
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if (imageFiles.length === 0) return
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e.preventDefault()
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for (const file of imageFiles) {
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const url = await uploadSingleImage(file)
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if (url) {
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editor.chain().focus().setImage({ src: url }).run()
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}
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}
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})
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}, 200)
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})
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async function uploadSingleImage(file) {
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const csrfMeta = document.querySelector('meta[name="csrf-token"]')
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const csrf = csrfMeta ? csrfMeta.getAttribute('content') : ''
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const formData = new FormData()
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formData.append('file', file)
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try {
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const resp = await fetch('/api/posts/upload-image', {
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method: 'POST',
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headers: { 'X-CSRF-Token': csrf },
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body: formData,
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})
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const data = await resp.json()
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if (data.success || data.code === 200) {
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return data.data?.url || data.url || ''
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}
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} catch (e) {
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// 上传失败，静默忽略
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}
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return ''
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}
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// ---- 字数统计 ----
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function updateWordCount(text) {
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const el = document.getElementById('wordCount')
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if (!el) return
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const len = (text || '').replace(/\s/g, '').length
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el.textContent = len + ' 字'
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}
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// ---- 草稿保存/恢复 ----
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function scheduleDraft(html) {
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clearTimeout(draftTimer)
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draftTimer = setTimeout(() => saveDraft(html), 2000)
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}
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function saveDraft(html) {
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const title = document.getElementById('postTitle')?.value || ''
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if (!html.trim() && !title.trim()) return
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try {
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localStorage.setItem('draft_post_title', title)
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localStorage.setItem('draft_post_body_html', html)
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const statusEl = document.getElementById('draftStatus')
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if (statusEl) {
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statusEl.style.display = ''
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setTimeout(() => { statusEl.style.display = 'none' }, 2000)
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}
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} catch (e) {
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// localStorage 不可用，静默忽略
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}
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}
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function restoreDraft() {
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try {
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const title = localStorage.getItem('draft_post_title')
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const html = localStorage.getItem('draft_post_body_html')
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if (title) {
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document.getElementById('postTitle').value = title
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}
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if (html && editor) {
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editor.commands.setContent(html)
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currentHTML = html
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updateWordCount(editor.getText())
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}
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} catch (e) {
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// 静默忽略
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}
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}
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function clearDraft() {
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try {
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localStorage.removeItem('draft_post_title')
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localStorage.removeItem('draft_post_body_html')
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} catch (e) { /* ignore */ }
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}
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// ---- 全屏 ----
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function toggleFullscreen() {
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const layout = document.querySelector('.editor-layout')
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if (!layout) return
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layout.classList.toggle('fullscreen')
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}
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// ---- 键盘快捷键 ----
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function handleKeyboard(e) {
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if (e.key === 'F11') {
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e.preventDefault()
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toggleFullscreen()
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}
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if ((e.ctrlKey || e.metaKey) && e.key === 's') {
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e.preventDefault()
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document.getElementById('postForm')?.dispatchEvent(new Event('submit'))
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}
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}
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// ---- 表单提交 ----
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async function handleSubmit(e) {
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e.preventDefault()
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if (submitting) return
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submitting = true
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const submitBtn = document.querySelector('.btn-submit')
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if (submitBtn) {
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submitBtn.disabled = true
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submitBtn.textContent = '提交中...'
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}
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try {
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const postId = document.getElementById('postId')?.value
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const title = document.getElementById('postTitle')?.value.trim()
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if (!title) { alert('请输入标题'); return }
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// 获取编辑器 HTML 内容
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const body = editor ? editor.getHTML() : ''
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// 忽略空段落
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const cleanBody = body === '<p></p>' ? '' : body
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if (!cleanBody.trim()) { alert('请输入正文'); return }
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const isEdit = !!postId
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const url = isEdit ? '/api/posts/' + postId : '/api/posts'
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const method = isEdit ? 'PUT' : 'POST'
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const csrfMeta = document.querySelector('meta[name="csrf-token"]')
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const csrf = csrfMeta ? csrfMeta.getAttribute('content') : ''
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const resp = await fetch(url, {
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method,
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headers: {
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'Content-Type': 'application/json',
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'X-CSRF-Token': csrf,
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},
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body: JSON.stringify({ title, body: cleanBody }),
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})
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const data = await resp.json()
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if (data.success || data.code === 200) {
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clearDraft()
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const newPostId = data.data?.id || data.data?.ID || postId
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window.location.href = newPostId ? '/posts/' + newPostId : '/posts'
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} else {
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alert(data.message || '操作失败')
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}
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} catch (err) {
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if (err && err.message === 'refresh_failed') {
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alert('登录已过期，请重新登录')
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window.location.href = '/auth/login?redirect=' + encodeURIComponent(window.location.pathname)
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} else {
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alert('请求失败，请重试')
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}
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} finally {
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submitting = false
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if (submitBtn) {
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submitBtn.disabled = false
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submitBtn.textContent = submitBtn.textContent === '提交中...' ?
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(document.getElementById('postId')?.value ? '保存修改' : '发布帖子') : submitBtn.textContent
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}
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}
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}
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