雨霖铃
286 lines
11 KiB
TypeScript
286 lines
11 KiB
TypeScript
import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
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import { Code, Download, Printer, Trash2 } from 'lucide-react';
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import { useLazyTranslation } from '@/utils/useLazyTranslation';
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import PageHeader from '@/components/PageHeader';
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import CopyButton from '@/components/CopyButton';
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import SwitchButtonGroup from '@/components/SwitchButtonGroup';
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import { Button } from '@/components/ui/button'; // 💡 1. 全面回归原子组件规范
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import { useStorageState } from '@/utils/useStorageState';
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import type { MarkdownToHtmlPreviewMode } from '@/types/storage';
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import {
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downloadHtmlFile,
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markdownToHtml,
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printHtml,
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SAMPLE_MARKDOWN,
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wrapHtmlDocument,
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} from '@/utils/markdownToHtml';
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import { cn } from '@/lib/utils';
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const isValidPreviewMode = (val: unknown): val is MarkdownToHtmlPreviewMode =>
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typeof val === 'string' && ['split', 'preview', 'html'].includes(val);
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// 💡 2. 样式超进化：将实色系全部改为标准 rgba 通道，确保在 iframe 内部能跟随宿主主题自适应混色
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const PREVIEW_STYLES = `
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.markdown-body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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line-height: 1.6;
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color: var(--md-foreground, #1f2328);
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background-color: transparent;
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}
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.markdown-body h1, .markdown-body h2, .markdown-body h3 {
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margin-top: 24px;
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margin-bottom: 16px;
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font-weight: 600;
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line-height: 1.25;
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}
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.markdown-body h1 { font-size: 1.6em; border-bottom: 1px solid var(--md-border, rgba(128,128,128,0.2)); padding-bottom: 0.3em; }
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.markdown-body h2 { font-size: 1.35em; border-bottom: 1px solid var(--md-border, rgba(128,128,128,0.2)); padding-bottom: 0.3em; }
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.markdown-body p { margin-top: 0; margin-bottom: 16px; font-size: 14px; }
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.markdown-body a { color: #2563eb; text-decoration: none; }
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.markdown-body a:hover { text-decoration: underline; }
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.markdown-body code {
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background-color: var(--md-code-bg, rgba(128,128,128,0.08));
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border-radius: 4px;
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font-size: 85%;
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padding: 0.2em 0.4em;
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font-family: Menlo, Consolas, monospace;
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}
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.markdown-body pre {
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background-color: var(--md-pre-bg, rgba(128,128,128,0.05));
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border-radius: 8px;
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font-size: 85%;
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line-height: 1.45;
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overflow: auto;
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padding: 16px;
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margin: 0 0 16px;
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border: 1px solid var(--md-border, rgba(128,128,128,0.15));
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}
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.markdown-body pre code {
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background-color: transparent;
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border: 0;
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padding: 0;
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}
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.markdown-body blockquote {
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border-left: 0.25em solid var(--md-quote-line, rgba(128,128,128,0.3));
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color: var(--md-muted, rgba(128,128,128,0.6));
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margin: 0 0 16px;
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padding: 0 1em;
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}
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.markdown-body table {
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border-collapse: collapse;
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width: 100%;
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margin-bottom: 16px;
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font-size: 13px;
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}
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.markdown-body table th, .markdown-body table td {
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border: 1px solid var(--md-border, rgba(128,128,128,0.2));
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padding: 6px 13px;
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}
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.markdown-body table tr:nth-child(2n) { background-color: var(--md-code-bg, rgba(128,128,128,0.03)); }
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.markdown-body table th { font-weight: 600; background-color: var(--md-code-bg, rgba(128,128,128,0.05)); }
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`;
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export default function MarkdownToHtmlPage() {
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const { t } = useLazyTranslation('markdownToHtml');
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const [previewMode, setPreviewMode] = useStorageState(
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'markdownToHtml/previewMode',
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'split' as MarkdownToHtmlPreviewMode,
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isValidPreviewMode,
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);
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const [markdown, setMarkdown] = useState(SAMPLE_MARKDOWN);
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const iframeRef = useRef<HTMLIFrameElement>(null);
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const result = useMemo(() => markdownToHtml(markdown), [markdown]);
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const error = result.hasError ? (result.error ?? null) : null;
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// 💡 3. 沙箱暗黑模式自适应守卫（Sandbox Dark Mode Synchronizer）：
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// 根据宿主最外层的 HTML 是否包含 .dark 类名，动态向 iframe 注入对应的明暗模式 CSS 变量色轴
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useEffect(() => {
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const iframe = iframeRef.current;
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if (!iframe) return;
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const isDarkMode = document.documentElement.classList.contains('dark');
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const themeVariables = isDarkMode
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? `:root {
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--md-foreground: #e6edf3;
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--md-border: rgba(255,255,255,0.15);
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--md-code-bg: rgba(255,255,255,0.1);
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--md-pre-bg: rgba(255,255,255,0.05);
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--md-muted: #8b949e;
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}`
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: `:root {
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--md-foreground: #1f2328;
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--md-border: rgba(128,128,128,0.2);
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--md-code-bg: rgba(128,128,128,0.08);
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--md-pre-bg: rgba(128,128,128,0.04);
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--md-muted: #636c76;
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}`;
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iframe.srcdoc = `<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8">
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<style>
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${themeVariables},
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${PREVIEW_STYLES},
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body { margin: 0; background-color: transparent; }
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</style>
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</head>
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<body class="markdown-body">${result.html}</body>
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</html>`;
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}, [result.html, previewMode]); // 当切换预览模式或 HTML 改变时，自发刷新沙箱
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const handleModeChange = useCallback(
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(newMode: MarkdownToHtmlPreviewMode) => {
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setPreviewMode(newMode);
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},
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[setPreviewMode],
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);
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const handleClear = useCallback(() => {
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setMarkdown('');
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}, []);
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const handlePrint = useCallback(() => {
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printHtml(result.html, t('pageTitle'));
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}, [result.html, t]);
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const handleDownload = useCallback(() => {
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const doc = wrapHtmlDocument(result.html, t('pageTitle'));
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downloadHtmlFile(doc, 'markdown-export.html');
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}, [result.html, t]);
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const showInput = previewMode !== 'preview';
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const showPreview = previewMode !== 'html';
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return (
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<div className="p-4 w-full flex flex-col space-y-4 select-none animate-in fade-in duration-300">
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<PageHeader
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title={t('pageTitle')}
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subtitle={t('pageSubtitle')}
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icon={<Code className="h-4 w-4" />}
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/>
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<div className="flex flex-col gap-4">
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{/* 工具集成控制护栏 */}
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<div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center bg-secondary/40 rounded-xl border border-border/60 px-1.5 py-1.5 sm:h-12">
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<SwitchButtonGroup
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value={previewMode}
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options={[
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{ value: 'split', label: t('splitMode') },
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{ value: 'preview', label: t('previewMode') },
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{ value: 'html', label: t('htmlMode') },
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]}
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onChange={handleModeChange}
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size="small"
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className="w-full sm:w-auto"
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/>
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<div className="flex gap-2 shrink-0">
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<Button
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variant="outline"
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size="sm"
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onClick={handleClear}
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className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm active:scale-95 text-destructive hover:text-destructive hover:bg-destructive/5 dark:hover:bg-destructive/10 border-input/60 transition-all"
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>
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<Trash2 className="h-3.5 w-3.5" />
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{t('clear')}
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</Button>
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<Button
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variant="outline"
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size="sm"
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onClick={handlePrint}
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disabled={!result.html}
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className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm active:scale-95 transition-all"
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>
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<Printer className="h-3.5 w-3.5" />
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{t('print')}
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</Button>
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<Button
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variant="outline"
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size="sm"
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onClick={handleDownload}
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disabled={!result.html}
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className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm active:scale-95 transition-all"
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>
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<Download className="h-3.5 w-3.5" />
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{t('download')}
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</Button>
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</div>
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</div>
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{/* 错误拦截提示框 */}
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{error && (
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<div className="p-3.5 bg-destructive/10 border border-destructive/20 rounded-xl text-destructive text-xs font-semibold tracking-wide animate-in shake duration-300">
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{error}
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</div>
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)}
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{/* 主框架多栏联动排版轴 */}
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<div
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className={cn(
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'grid gap-4 min-h-[460px] w-full',
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showInput && showPreview ? 'grid-cols-1 md:grid-cols-2' : 'grid-cols-1',
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)}
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>
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{/* Markdown 输入翼终端 */}
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{showInput && (
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<div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col transition-all duration-200 focus-within:ring-1 focus-within:ring-ring focus-within:border-ring">
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<div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
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<span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
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{t('inputLabel')}
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</span>
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<span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
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{t('charCount', { count: markdown.length })}
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</span>
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</div>
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<textarea
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value={markdown}
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onChange={(e) => setMarkdown(e.target.value)}
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placeholder={t('inputPlaceholder')}
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className="flex-1 min-h-[380px] p-4 bg-transparent font-mono text-xs leading-relaxed resize-none focus:outline-none text-foreground/90 select-text"
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/>
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</div>
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)}
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{/* 实时 HTML/Iframe 预览翼终端 */}
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{showPreview && (
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<div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col">
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<div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
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<span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
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{(previewMode as string) === 'html' ? t('htmlOutputLabel') : t('previewLabel')}
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</span>
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<div className="flex items-center gap-2">
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<span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
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{t('charCount', { count: result.htmlLength })}
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</span>
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<CopyButton
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text={result.html}
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className="h-6 w-6 rounded-md border text-muted-foreground"
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/>
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</div>
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</div>
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{(previewMode as string) === 'html' ? (
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<textarea
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value={result.html}
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readOnly
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className="flex-1 min-h-[380px] p-4 font-mono text-xs leading-relaxed resize-none focus:outline-none bg-muted/30 dark:bg-muted/10 text-foreground/80 select-text"
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/>
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) : (
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<div className="flex-1 p-4 min-h-[380px] overflow-auto bg-transparent">
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<iframe
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ref={iframeRef}
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title="markdown-preview"
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className="w-full h-full min-h-[350px] border-none bg-transparent"
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/>
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</div>
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)}
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</div>
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)}
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</div>
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</div>
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</div>
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);
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}
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