643 lines
22 KiB
TypeScript
643 lines
22 KiB
TypeScript
'use client'
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import { useState, useCallback, useEffect, useRef } from 'react'
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import { templates } from '@/config/wechat-templates'
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import { cn } from '@/lib/utils'
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import { useToast } from '@/components/ui/use-toast'
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import { ToastAction } from '@/components/ui/toast'
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import { convertToWechat, getCodeThemeStyles, type RendererOptions } from '@/lib/markdown'
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import { useEditorSync } from './hooks/useEditorSync'
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import { useAutoSave } from './hooks/useAutoSave'
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import { EditorToolbar } from './components/EditorToolbar'
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import { EditorPreview } from './components/EditorPreview'
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import { MarkdownToolbar } from './components/MarkdownToolbar'
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import { type PreviewSize } from './constants'
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import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs'
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import { WechatStylePicker } from '@/components/template/WechatStylePicker'
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import { Copy, Clock, Type, Trash2 } from 'lucide-react'
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import { useLocalStorage } from '@/hooks/use-local-storage'
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import { codeThemes, type CodeThemeId } from '@/config/code-themes'
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import '@/styles/code-themes.css'
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import { copyHandler, initializeMermaid, MERMAID_CONFIG } from './utils/copy-handler'
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// 计算阅读时间（假设每分钟阅读300字）
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const calculateReadingTime = (text: string): string => {
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const words = text.trim().length
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const minutes = Math.ceil(words / 300)
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return `${minutes} 分钟`
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}
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// 计算字数
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const calculateWordCount = (text: string): string => {
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const count = text.trim().length
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return count.toLocaleString()
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}
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export default function WechatEditor() {
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const { toast } = useToast()
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const editorRef = useRef<HTMLDivElement>(null)
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const textareaRef = useRef<HTMLTextAreaElement>(null)
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const previewRef = useRef<HTMLDivElement>(null)
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const [value, setValue] = useState('')
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const [selectedTemplate, setSelectedTemplate] = useState<string>('default')
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const [showPreview, setShowPreview] = useState(true)
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const [styleOptions, setStyleOptions] = useState<RendererOptions>({})
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const [previewSize, setPreviewSize] = useState<PreviewSize>('medium')
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const [isConverting, setIsConverting] = useState(false)
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const [isDraft, setIsDraft] = useState(false)
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const [previewContent, setPreviewContent] = useState('')
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const [cursorPosition, setCursorPosition] = useState<{ start: number; end: number }>({ start: 0, end: 0 })
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// 添加字数和阅读时间状态
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const [wordCount, setWordCount] = useState('0')
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const [readingTime, setReadingTime] = useState('1 分钟')
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// 添加 codeTheme 状态
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const [codeTheme, setCodeTheme] = useLocalStorage<CodeThemeId>('code-theme', codeThemes[0].id)
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// 使用自定义 hooks
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const { handleScroll } = useEditorSync(editorRef)
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const { handleEditorChange } = useAutoSave(value, setIsDraft)
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// 初始化 Mermaid
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useEffect(() => {
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const init = async () => {
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await initializeMermaid()
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}
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init()
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}, [])
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// 处理编辑器输入
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const handleInput = useCallback((e: React.ChangeEvent<HTMLTextAreaElement>) => {
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const newValue = e.target.value
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setValue(newValue)
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handleEditorChange(newValue)
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// 保存光标位置
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setCursorPosition({
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start: e.target.selectionStart,
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end: e.target.selectionEnd
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})
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}, [handleEditorChange])
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// 处理Tab键
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const handleKeyDown = useCallback((e: React.KeyboardEvent<HTMLTextAreaElement>) => {
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if (e.key === 'Tab') {
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e.preventDefault()
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const textarea = e.currentTarget
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const start = textarea.selectionStart
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const end = textarea.selectionEnd
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// 插入两个空格作为缩进
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const newValue = value.substring(0, start) + ' ' + value.substring(end)
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setValue(newValue)
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handleEditorChange(newValue)
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// 恢复光标位置
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requestAnimationFrame(() => {
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textarea.selectionStart = textarea.selectionEnd = start + 2
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})
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}
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}, [value, handleEditorChange])
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// 获取预览内容
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const getPreviewContent = useCallback(() => {
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if (!value) return ''
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const template = templates.find(t => t.id === selectedTemplate)
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const mergedOptions: RendererOptions = {
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base: {
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...(template?.options?.base || {}),
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...styleOptions.base,
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},
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block: {
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...(template?.options?.block || {}),
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...(styleOptions.block || {}),
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code_pre: {
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...(template?.options?.block?.code_pre || {}),
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...(styleOptions.block?.code_pre || {}),
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...getCodeThemeStyles(codeTheme)
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},
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h1: {
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...(template?.options?.block?.h1 || {}),
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...(styleOptions.block?.h1 || {}),
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fontSize: styleOptions.block?.h1?.fontSize || template?.options?.block?.h1?.fontSize || '24px',
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color: styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a',
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...(template?.options?.block?.h1?.borderBottom && {
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borderBottom: `2px solid ${styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a'}`
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})
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},
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h2: {
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...(template?.options?.block?.h2 || {}),
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...(styleOptions.block?.h2 || {}),
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fontSize: styleOptions.block?.h2?.fontSize || template?.options?.block?.h2?.fontSize || '20px',
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color: styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a',
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...(template?.options?.block?.h2?.borderBottom && {
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borderBottom: `2px solid ${styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a'}`
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})
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},
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h3: {
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...(template?.options?.block?.h3 || {}),
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...(styleOptions.block?.h3 || {}),
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fontSize: styleOptions.block?.h3?.fontSize || template?.options?.block?.h3?.fontSize || '1.1em',
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color: styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a',
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...(template?.options?.block?.h3?.borderLeft && {
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borderLeft: `3px solid ${styleOptions.base?.themeColor || template?.options?.base?.themeColor || '#1a1a1a'}`
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})
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},
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p: {
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...(template?.options?.block?.p || {}),
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...(styleOptions.block?.p || {}),
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fontSize: styleOptions.base?.fontSize || template?.options?.base?.fontSize || '15px',
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lineHeight: styleOptions.base?.lineHeight || template?.options?.base?.lineHeight || 2
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},
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ol: {
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...(template?.options?.block?.ol || {}),
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...(styleOptions.block?.ol || {}),
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fontSize: styleOptions.base?.fontSize || template?.options?.base?.fontSize || '15px',
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},
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ul: {
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...(template?.options?.block?.ul || {}),
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...(styleOptions.block?.ul || {}),
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fontSize: styleOptions.base?.fontSize || template?.options?.base?.fontSize || '15px',
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}
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},
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inline: {
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...(template?.options?.inline || {}),
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...(styleOptions.inline || {}),
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listitem: {
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...(template?.options?.inline?.listitem || {}),
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...(styleOptions.inline?.listitem || {}),
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fontSize: styleOptions.base?.fontSize || template?.options?.base?.fontSize || '15px',
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}
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},
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codeTheme
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}
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const html = convertToWechat(value, mergedOptions)
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if (!template?.transform) return html
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try {
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const transformed = template.transform(html)
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if (transformed && typeof transformed === 'object') {
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const result = transformed as { html?: string; content?: string }
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if (result.html) return result.html
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if (result.content) return result.content
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return JSON.stringify(transformed)
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}
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return transformed || html
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} catch (error) {
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console.error('Template transformation error:', error)
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return html
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}
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}, [value, selectedTemplate, styleOptions, codeTheme])
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// 处理复制
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const handleCopy = useCallback(async () => {
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// 获取预览容器中的实际内容
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const previewContainer = document.querySelector('.preview-content')
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if (!previewContainer) {
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return copyHandler(window.getSelection(), previewContent, { toast })
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}
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// 使用实际渲染后的内容
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return copyHandler(window.getSelection(), previewContainer.innerHTML, { toast })
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}, [previewContent, toast])
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// 手动保存
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const handleSave = useCallback(() => {
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try {
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localStorage.setItem('wechat_editor_content', value)
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setIsDraft(false)
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toast({
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title: "保存成功",
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description: "内容已保存到本地",
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duration: 3000
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})
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} catch (error) {
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toast({
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variant: "destructive",
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title: "保存失败",
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description: "无法保存内容，请检查浏览器存储空间",
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action: <ToastAction altText="重试">重试</ToastAction>,
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})
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}
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}, [value, toast])
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// 监听快捷键保存事件
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useEffect(() => {
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const handleKeyDown = (e: KeyboardEvent) => {
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if ((e.metaKey || e.ctrlKey) && e.key === 's') {
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e.preventDefault()
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handleSave()
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}
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}
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window.addEventListener('keydown', handleKeyDown)
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return () => window.removeEventListener('keydown', handleKeyDown)
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}, [handleSave])
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// 更新预览内容
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useEffect(() => {
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const updatePreview = async () => {
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if (!value) {
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setPreviewContent('')
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return
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}
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setIsConverting(true)
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try {
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const content = getPreviewContent()
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setPreviewContent(content)
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// 等待下一个渲染周期，确保内容已更新到 DOM
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await new Promise(resolve => requestAnimationFrame(resolve))
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// 重新初始化 Mermaid，但不阻塞界面
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initializeMermaid().catch(error => {
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console.error('Failed to initialize Mermaid:', error)
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// 不显示错误提示，让界面继续运行
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})
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} catch (error) {
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console.error('Error updating preview:', error)
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toast({
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variant: "destructive",
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title: "预览更新失败",
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description: "生成预览内容时发生错误",
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})
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} finally {
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setIsConverting(false)
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}
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}
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updatePreview()
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}, [value, selectedTemplate, styleOptions, codeTheme, getPreviewContent, toast])
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// 加载已保存的内容
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useEffect(() => {
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const draftContent = localStorage.getItem('wechat_editor_draft')
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const savedContent = localStorage.getItem('wechat_editor_content')
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if (draftContent) {
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setValue(draftContent)
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setIsDraft(true)
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toast({
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description: "已恢复未保存的草稿",
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action: <ToastAction altText="放弃">放弃草稿</ToastAction>,
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duration: 5000,
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})
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} else if (savedContent) {
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setValue(savedContent)
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}
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}, [toast])
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// 渲染预览内容
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const renderPreview = useCallback(() => {
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return (
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<div
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className="preview-content"
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dangerouslySetInnerHTML={{ __html: previewContent }}
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/>
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)
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}, [previewContent])
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// 检测是否为移动设备
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const isMobile = useCallback(() => {
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if (typeof window === 'undefined') return false
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return window.innerWidth < 640
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}, [])
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// 自动切换预览模式
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useEffect(() => {
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const handleResize = () => {
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if (isMobile()) {
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setPreviewSize('full')
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}
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}
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handleResize()
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window.addEventListener('resize', handleResize)
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return () => window.removeEventListener('resize', handleResize)
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}, [isMobile])
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// 处理文章选择
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const handleArticleSelect = useCallback((article: { content: string, template: string }) => {
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setValue(article.content)
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setSelectedTemplate(article.template)
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setIsDraft(false)
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toast({
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title: "加载成功",
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description: "已加载选中的文章",
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duration: 2000
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})
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}, [toast])
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// 处理新建文章
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const handleNewArticle = useCallback(() => {
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if (isDraft) {
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toast({
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title: "提示",
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description: "当前文章未保存，是否继续？",
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action: (
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<ToastAction altText="继续" onClick={() => {
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setValue('# 新文章\n\n开始写作...')
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setIsDraft(false)
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}}>
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继续
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</ToastAction>
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),
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duration: 5000,
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})
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return
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}
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setValue('# 新文章\n\n开始写作...')
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setIsDraft(false)
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}, [isDraft, toast])
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// 处理工具栏插入文本
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const handleToolbarInsert = useCallback((text: string, options?: { wrap?: boolean; placeholder?: string; suffix?: string }) => {
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const textarea = textareaRef.current
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if (!textarea) return
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const start = textarea.selectionStart
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const end = textarea.selectionEnd
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const selectedText = value.substring(start, end)
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let newText = ''
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let newCursorPos = 0
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if (options?.wrap && selectedText) {
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// 如果有选中文本且需要包裹
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newText = value.substring(0, start) +
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text + selectedText + (options.suffix || text) +
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value.substring(end)
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newCursorPos = start + text.length + selectedText.length + (options.suffix?.length || text.length)
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} else {
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// 插入新文本
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const insertText = selectedText || options?.placeholder || ''
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newText = value.substring(0, start) +
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text + insertText + (options?.suffix || '') +
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value.substring(end)
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newCursorPos = start + text.length + insertText.length + (options?.suffix?.length || 0)
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}
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setValue(newText)
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handleEditorChange(newText)
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// 恢复焦点并设置光标位置
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requestAnimationFrame(() => {
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textarea.focus()
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textarea.setSelectionRange(newCursorPos, newCursorPos)
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})
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}, [value, handleEditorChange])
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// 处理模版选择
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const handleTemplateSelect = useCallback((templateId: string) => {
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setSelectedTemplate(templateId)
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// 重置样式设置为模版默认值
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setStyleOptions({})
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}, [])
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// 更新字数和阅读时间
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useEffect(() => {
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const plainText = previewContent.replace(/<[^>]+>/g, '')
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setWordCount(calculateWordCount(plainText))
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setReadingTime(calculateReadingTime(plainText))
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}, [previewContent])
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const isScrolling = useRef<boolean>(false)
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const scrollTimeout = useRef<NodeJS.Timeout>()
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const lastScrollTop = useRef<number>(0)
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// 处理滚动同步
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const handleEditorScroll = useCallback((e: React.UIEvent<HTMLTextAreaElement>) => {
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if (isScrolling.current) return
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const textarea = e.currentTarget
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const previewContainer = document.querySelector('.preview-container .overflow-y-auto')
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if (!previewContainer) return
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// 检查滚动方向和幅度
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const currentScrollTop = textarea.scrollTop
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const scrollDiff = currentScrollTop - lastScrollTop.current
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// 如果滚动幅度太小，忽略此次滚动
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if (Math.abs(scrollDiff) < 5) return
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isScrolling.current = true
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lastScrollTop.current = currentScrollTop
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try {
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const scrollPercentage = currentScrollTop / (textarea.scrollHeight - textarea.clientHeight)
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const targetScrollTop = scrollPercentage * (previewContainer.scrollHeight - previewContainer.clientHeight)
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// 使用 scrollTo 带平滑滚动效果
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previewContainer.scrollTo({
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top: targetScrollTop,
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behavior: 'instant' // 使用即时滚动而不是平滑滚动
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})
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} finally {
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// 使用较短的延迟时间
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if (scrollTimeout.current) {
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clearTimeout(scrollTimeout.current)
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}
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scrollTimeout.current = setTimeout(() => {
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isScrolling.current = false
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}, 50) // 减少延迟时间到 50ms
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}
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}, [])
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// 清理定时器
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useEffect(() => {
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return () => {
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if (scrollTimeout.current) {
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clearTimeout(scrollTimeout.current)
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}
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}
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}, [])
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// 清除编辑器内容
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const handleClear = useCallback(() => {
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if (window.confirm('确定要清除所有内容吗？')) {
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setValue('')
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handleEditorChange('')
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toast({
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title: "已清除",
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description: "编辑器内容已清除",
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duration: 2000
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})
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}
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}, [handleEditorChange, toast])
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// 处理代码主题变化
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const handleCodeThemeChange = useCallback((theme: CodeThemeId) => {
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setCodeTheme(theme)
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// 立即重新生成预览内容
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setIsConverting(true)
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try {
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const content = getPreviewContent()
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setPreviewContent(content)
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} catch (error) {
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console.error('Error updating preview:', error)
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toast({
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variant: "destructive",
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title: "预览更新失败",
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description: "生成预览内容时发生错误",
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})
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} finally {
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setIsConverting(false)
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}
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}, [getPreviewContent, toast])
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return (
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<div className="h-screen flex flex-col overflow-hidden">
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<div className="hidden sm:block">
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<EditorToolbar
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value={value}
|
||
isDraft={isDraft}
|
||
showPreview={showPreview}
|
||
selectedTemplate={selectedTemplate}
|
||
onSave={handleSave}
|
||
onCopy={handleCopy}
|
||
onCopyPreview={handleCopy}
|
||
onNewArticle={handleNewArticle}
|
||
onArticleSelect={handleArticleSelect}
|
||
onTemplateSelect={handleTemplateSelect}
|
||
onTemplateChange={() => setValue(value)}
|
||
onStyleOptionsChange={setStyleOptions}
|
||
onPreviewToggle={() => setShowPreview(!showPreview)}
|
||
styleOptions={styleOptions}
|
||
wordCount={wordCount}
|
||
readingTime={readingTime}
|
||
codeTheme={codeTheme}
|
||
onCodeThemeChange={handleCodeThemeChange}
|
||
/>
|
||
</div>
|
||
|
||
<div className="flex-1 flex flex-col sm:flex-row overflow-hidden">
|
||
{/* Mobile View */}
|
||
<div className="sm:hidden flex-1 flex flex-col">
|
||
<div className="flex items-center justify-between p-2 border-b bg-background">
|
||
<div className="flex-1 mr-2">
|
||
<WechatStylePicker
|
||
value={selectedTemplate}
|
||
onSelect={handleTemplateSelect}
|
||
/>
|
||
</div>
|
||
<div className="flex items-center gap-2">
|
||
<button
|
||
onClick={handleClear}
|
||
className="flex items-center justify-center gap-1 px-2 py-1 rounded-md text-xs text-destructive hover:bg-muted transition-colors"
|
||
title="清除内容"
|
||
>
|
||
<Trash2 className="h-3.5 w-3.5" />
|
||
清除
|
||
</button>
|
||
<button
|
||
onClick={handleCopy}
|
||
className="flex items-center justify-center gap-1 px-2 py-1 rounded-md text-xs text-primary hover:bg-muted transition-colors"
|
||
>
|
||
<Copy className="h-3.5 w-3.5" />
|
||
复制
|
||
</button>
|
||
</div>
|
||
</div>
|
||
<Tabs defaultValue="editor" className="flex-1 flex flex-col">
|
||
<TabsList className="grid w-full grid-cols-2">
|
||
<TabsTrigger value="editor">编辑</TabsTrigger>
|
||
<TabsTrigger value="preview">预览</TabsTrigger>
|
||
</TabsList>
|
||
<TabsContent value="editor" className="flex-1 data-[state=inactive]:hidden">
|
||
<div
|
||
ref={editorRef}
|
||
className={cn(
|
||
"h-full",
|
||
selectedTemplate && templates.find(t => t.id === selectedTemplate)?.styles
|
||
)}
|
||
>
|
||
<textarea
|
||
ref={textareaRef}
|
||
value={value}
|
||
onChange={handleInput}
|
||
onKeyDown={handleKeyDown}
|
||
className="w-full h-full resize-none outline-none p-4 font-mono text-base leading-relaxed overflow-y-scroll scrollbar-none"
|
||
placeholder="开始写作..."
|
||
spellCheck={false}
|
||
onScroll={handleEditorScroll}
|
||
/>
|
||
</div>
|
||
</TabsContent>
|
||
<TabsContent value="preview" className="flex-1 data-[state=inactive]:hidden">
|
||
<div className="h-full overflow-y-auto">
|
||
<EditorPreview
|
||
previewRef={previewRef}
|
||
selectedTemplate={selectedTemplate}
|
||
previewSize={previewSize}
|
||
isConverting={isConverting}
|
||
previewContent={previewContent}
|
||
codeTheme={codeTheme}
|
||
onPreviewSizeChange={setPreviewSize}
|
||
/>
|
||
</div>
|
||
</TabsContent>
|
||
</Tabs>
|
||
</div>
|
||
|
||
{/* Desktop Split View */}
|
||
<div className="hidden sm:flex flex-1 flex-row">
|
||
<div
|
||
ref={editorRef}
|
||
className={cn(
|
||
"editor-container bg-background transition-all duration-300 ease-in-out flex flex-col h-full",
|
||
showPreview
|
||
? "w-1/2 border-r"
|
||
: "w-full",
|
||
selectedTemplate && templates.find(t => t.id === selectedTemplate)?.styles
|
||
)}
|
||
>
|
||
<MarkdownToolbar onInsert={handleToolbarInsert} />
|
||
<div className="flex-1 overflow-hidden">
|
||
<textarea
|
||
ref={textareaRef}
|
||
value={value}
|
||
onChange={handleInput}
|
||
onKeyDown={handleKeyDown}
|
||
className="w-full h-full resize-none outline-none p-4 font-mono text-base leading-relaxed overflow-y-scroll scrollbar-none"
|
||
placeholder="开始写作..."
|
||
spellCheck={false}
|
||
onScroll={handleEditorScroll}
|
||
/>
|
||
</div>
|
||
</div>
|
||
|
||
{showPreview && (
|
||
<EditorPreview
|
||
previewRef={previewRef}
|
||
selectedTemplate={selectedTemplate}
|
||
previewSize={previewSize}
|
||
isConverting={isConverting}
|
||
previewContent={previewContent}
|
||
codeTheme={codeTheme}
|
||
onPreviewSizeChange={setPreviewSize}
|
||
/>
|
||
)}
|
||
</div>
|
||
</div>
|
||
|
||
{/* 底部工具栏 */}
|
||
<div className="fixed bottom-0 left-0 right-0 bg-background border-t h-10 flex items-center justify-end px-4 gap-4">
|
||
<div className="flex items-center gap-2 text-sm text-muted-foreground">
|
||
<Type className="h-4 w-4" />
|
||
<span>{wordCount} 字</span>
|
||
</div>
|
||
<div className="flex items-center gap-2 text-sm text-muted-foreground mr-4">
|
||
<Clock className="h-4 w-4" />
|
||
<span>约 {readingTime}</span>
|
||
</div>
|
||
</div>
|
||
|
||
{/* 为底部工具栏添加间距 */}
|
||
<div className="h-10" />
|
||
</div>
|
||
)
|
||
} |