refactor: v2.0 全量重构 — TypeScript + React + Zustand + IndexedDB
技术栈升级: - JavaScript → TypeScript 5.6(全量类型安全) - 原生 DOM → React 18(函数组件 + Hooks) - 全局变量 → Zustand 5(轻量状态管理) - localStorage → IndexedDB / Dexie.js 4(大容量、异步、索引) - marked.js → unified / remark / rehype(插件化渲染管线) - 无打包 → electron-vite 3(HMR 热更新) - 纯 CSS → CSS Variables + CSS Modules 新增功能: - 标签页状态 IndexedDB 持久化(关闭后可恢复) - 最近打开文件列表 - 大文件虚拟化行号(>2000 行) - 搜索高亮二分查找优化 O(log N) - rehype-sanitize HTML 安全过滤 文件结构: - 7 个源文件 → 51 个模块化文件 - src/main/ 主进程(6 文件) - src/preload/ 预加载(1 文件) - src/renderer/ 渲染进程(42 文件:组件/hooks/stores/lib/db/types/styles) - src/shared/ 共享类型(2 文件) 构建验证: - TypeScript 检查零错误 - electron-vite build 成功 - 产物:main 15kB + preload 2kB + renderer 1.5MB
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import React, { useCallback } from 'react'
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import { useTabStore } from '../../stores/tabStore'
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import { getFileName } from '../../lib/fileUtils'
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export function TabBar() {
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const tabs = useTabStore(s => s.tabs)
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const activeTabId = useTabStore(s => s.activeTabId)
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const switchToTab = useTabStore(s => s.switchToTab)
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const closeTab = useTabStore(s => s.closeTab)
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const createTab = useTabStore(s => s.createTab)
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const handleClose = useCallback((e: React.MouseEvent, tabId: string) => {
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e.stopPropagation()
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const tab = tabs.find(t => t.id === tabId)
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if (tab?.isModified) {
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const name = tab.filePath ? getFileName(tab.filePath) : '未命名'
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if (!confirm(`"${name}" 尚未保存,确定要关闭吗?`)) return
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}
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closeTab(tabId)
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}, [tabs, closeTab])
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if (tabs.length === 0) return null
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return (
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<div id="tab-bar">
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<div id="tab-list">
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{tabs.map(tab => (
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<div
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key={tab.id}
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className={`tab-item ${tab.id === activeTabId ? 'active' : ''} ${tab.isModified ? 'modified' : ''}`}
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onClick={() => switchToTab(tab.id)}
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>
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<span className="tab-name">
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{tab.filePath ? getFileName(tab.filePath) : '未命名'}
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</span>
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<button
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className="tab-close"
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onClick={(e) => handleClose(e, tab.id)}
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>
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<svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
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<line x1="18" y1="6" x2="6" y2="18" />
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<line x1="6" y1="6" x2="18" y2="18" />
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</svg>
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</button>
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</div>
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))}
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</div>
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<button
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className="tab-add-btn"
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onClick={() => createTab(null, '')}
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title="新建标签页 (Ctrl+T)"
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>
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<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
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<line x1="12" y1="5" x2="12" y2="19" />
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<line x1="5" y1="12" x2="19" y2="12" />
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</svg>
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</button>
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</div>
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)
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}
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