feat: implement Markdown Todo Tree with date grouping and local storage persistence
- Added new CSS styles for the TestPage component. - Refactored TestPage.js to manage a Markdown-based todo list with date grouping. - Integrated date-fns for date formatting. - Introduced ReactMarkdown for rendering Markdown content. - Enhanced user experience with input handling for adding and editing todos. - Implemented local storage for persistent state across sessions.
This commit is contained in:
雨霖铃
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.app-container {
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/* 关键：限制最小宽度和高度，适配 Chrome Extension Popup */
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min-width: 350px;
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min-height: 500px;
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max-width: 800px; /* 在网页运行时限制最大宽度 */
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margin: 0 auto;
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padding: 20px;
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background: white;
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box-shadow: 0 0 10px rgba(0,0,0,0.05);
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}
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.app-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 20px;
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border-bottom: 2px solid #eee;
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padding-bottom: 10px;
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}
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/* 按钮样式 */
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button {
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cursor: pointer;
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border: none;
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border-radius: 4px;
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padding: 8px 16px;
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font-weight: bold;
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}
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.btn-primary { background-color: #007bff; color: white; }
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.btn-save { background-color: #28a745; color: white; margin-right: 10px; }
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.btn-cancel { background-color: #dc3545; color: white; }
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/* 输入框 */
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.input-area {
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background: #f9f9f9;
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padding: 15px;
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border-radius: 8px;
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margin-bottom: 20px;
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border: 1px solid #ddd;
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}
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.markdown-input {
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width: 100%;
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height: 100px;
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padding: 10px;
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box-sizing: border-box;
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border: 1px solid #ccc;
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border-radius: 4px;
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resize: vertical;
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margin-bottom: 10px;
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font-family: monospace;
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}
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/* 树状结构 */
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.date-group {
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margin-bottom: 15px;
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border: 1px solid #eee;
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border-radius: 6px;
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overflow: hidden;
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}
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.date-header {
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background-color: #e9ecef;
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padding: 10px;
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cursor: pointer;
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font-weight: bold;
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user-select: none;
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list-style: none; /* 隐藏默认三角，部分浏览器需要 */
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display: flex;
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align-items: center;
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}
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/* 自定义折叠箭头 */
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.date-header::before {
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content: '▶';
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display: inline-block;
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margin-right: 8px;
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font-size: 0.8em;
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transition: transform 0.2s;
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}
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details[open] .date-header::before {
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transform: rotate(90deg);
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}
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.count-badge {
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background: #6c757d;
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color: white;
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border-radius: 10px;
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padding: 2px 8px;
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font-size: 0.8em;
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margin-left: auto;
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}
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.todo-list {
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padding: 0;
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}
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.todo-item {
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padding: 12px 15px;
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border-top: 1px solid #f0f0f0;
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cursor: pointer;
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display: flex;
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align-items: flex-start;
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transition: background 0.2s;
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}
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.todo-item:hover {
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background-color: #f1f8ff;
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}
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.time-tag {
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font-size: 0.75em;
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color: #999;
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margin-right: 12px;
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white-space: nowrap;
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margin-top: 4px; /* 对齐 */
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}
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.markdown-content {
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flex: 1;
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font-size: 0.95em;
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line-height: 1.5;
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}
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/* Markdown 内部样式修正，防止标题太大 */
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.markdown-content h1, .markdown-content h2, .markdown-content h3 {
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margin: 5px 0;
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font-size: 1.1em;
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}
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.markdown-content p {
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margin: 0;
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}
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+149
-98
@@ -1,111 +1,162 @@
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import React, {useEffect} from 'react';
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import {db} from '../utils/db';
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import {useLiveQuery} from 'dexie-react-hooks';
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// 样式简单写一下，实际可以用 styled-components 或 css modules
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const styles = {
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container: {padding: '20px', fontFamily: 'sans-serif', maxWidth: '600px', margin: '0 auto'},
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uploadBox: {
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border: '2px dashed #aaa',
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padding: '40px',
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textAlign: 'center',
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background: '#f9f9f9',
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marginBottom: '20px',
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borderRadius: '8px'
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},
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grid: {display: 'grid', gridTemplateColumns: 'repeat(auto-fill, minmax(150px, 1fr))', gap: '10px'},
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card: {border: '1px solid #eee', borderRadius: '8px', overflow: 'hidden', position: 'relative'},
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img: {width: '100%', height: '120px', objectFit: 'cover', display: 'block'},
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delBtn: {
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position: 'absolute',
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top: '5px',
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right: '5px',
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background: 'red',
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color: 'white',
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border: 'none',
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cursor: 'pointer',
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padding: '2px 8px',
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borderRadius: '4px'
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}
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};
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import React, { useState, useEffect, useMemo } from 'react';
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import ReactMarkdown from 'react-markdown';
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import { format } from 'date-fns';
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import "./TestPage.css";
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const TestPage = () => {
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const images = useLiveQuery(() => db.images.orderBy('created').reverse().toArray());
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// --- FIX 2: 修复重复粘贴问题 ---
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// 待办列表数据: { id, content, createdAt }
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const [todos, setTodos] = useState(() => {
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// 从 localStorage 初始化，保证刷新不丢失
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const saved = localStorage.getItem('markdown-todos');
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return saved ? JSON.parse(saved) : [];
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});
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// UI 状态
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const [isInputVisible, setIsInputVisible] = useState(false);
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const [inputValue, setInputValue] = useState('');
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const [editingId, setEditingId] = useState(null); // 当前正在编辑的 ID，null 表示新增
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// 持久化存储
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useEffect(() => {
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const handlePaste = async (event) => {
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// 1. 获取剪贴板数据
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const items = (event.clipboardData || event.originalEvent.clipboardData).items;
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// 2. 找到第一个图片文件 (防止一次粘贴循环出多个格式)
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let foundImage = false;
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for (let item of items) {
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if (!foundImage && item.kind === 'file' && item.type.includes('image/')) {
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const blob = item.getAsFile();
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foundImage = true; // 标记已找到，避免重复处理
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// 3. 阻止默认行为（防止浏览器把图片直接贴到页面上）
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event.preventDefault();
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await db.images.add({
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blob: blob,
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created: new Date(),
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source: 'Paste'
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});
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console.log('图片已添加');
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}
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}
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};
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// 添加监听
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window.addEventListener('paste', handlePaste);
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// ★★★ 关键：必须返回一个清理函数，组件刷新时移除旧的监听器 ★★★
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return () => {
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window.removeEventListener('paste', handlePaste);
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};
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}, []); // ★★★ 关键：依赖数组必须为空 []，保证只在挂载时绑定一次
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// --- FIX 1: 修复删除变增加的问题 ---
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const handleDelete = async (event, id) => {
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// ★★★ 关键：阻止事件冒泡，防止触发父级的点击或粘贴逻辑
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event.stopPropagation();
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try {
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await db.images.delete(id);
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console.log('删除成功 ID:', id);
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} catch (error) {
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console.error('删除失败:', error);
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localStorage.setItem('markdown-todos', JSON.stringify(todos));
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}, [todos]);
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// --- 核心逻辑：数据处理 ---
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// 1. 处理提交
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const handleSubmit = () => {
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if (!inputValue.trim()) return;
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if (editingId) {
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// 编辑模式
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setTodos(prev => prev.map(item =>
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item.id === editingId ? { ...item, content: inputValue } : item
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));
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} else {
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// 新增模式
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const newTodo = {
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id: Date.now(),
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content: inputValue,
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createdAt: Date.now(),
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};
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setTodos(prev => [...prev, newTodo]);
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}
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// 重置并关闭
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setInputValue('');
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setEditingId(null);
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setIsInputVisible(false);
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};
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// 2. 处理点击待办（进入编辑）
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const handleEditClick = (todo) => {
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setInputValue(todo.content);
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setEditingId(todo.id);
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setIsInputVisible(true);
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};
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// 3. 处理取消/关闭
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const handleCancel = () => {
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setIsInputVisible(false);
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setInputValue('');
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setEditingId(null);
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};
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// 4. 数据分组与排序 (核心需求 4)
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const groupedTodos = useMemo(() => {
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const groups = {};
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todos.forEach(todo => {
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// 第一层 Key: 日期 (例如 2023-10-27)
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const dateKey = format(todo.createdAt, 'yyyy-MM-dd');
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if (!groups[dateKey]) {
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groups[dateKey] = [];
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}
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groups[dateKey].push(todo);
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});
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// 将对象转为数组以便排序渲染
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const groupArray = Object.keys(groups).map(date => ({
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date,
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items: groups[date]
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}));
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// 第一层排序：按日期倒序
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groupArray.sort((a, b) => new Date(b.date) - new Date(a.date));
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// 第二层排序：组内按添加时间倒序
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groupArray.forEach(group => {
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group.items.sort((a, b) => b.createdAt - a.createdAt);
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});
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return groupArray;
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}, [todos]);
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return (
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<div style={styles.container}>
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<h2>React 图片采集器 (已修复)</h2>
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<p>点击任意处粘贴 (Ctrl+V)</p>
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<div style={styles.grid}>
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{images?.map((img) => (
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<div key={img.id} style={styles.card}>
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<img src={URL.createObjectURL(img.blob)} alt="screenshot" style={styles.img}/>
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{/* 传递 event 对象给 handleDelete */}
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<button
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style={styles.delBtn}
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onClick={(e) => handleDelete(e, img.id)}
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>
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删除
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<div className="app-container">
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<header className="app-header">
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<h2>Markdown Todo Tree</h2>
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{/* 如果没打开输入框，显示添加按钮 */}
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{!isInputVisible && (
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<button className="btn-primary" onClick={() => setIsInputVisible(true)}>
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+ 新增待办
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</button>
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)}
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</header>
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{/* 输入区域 (Markdown) */}
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{isInputVisible && (
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<div className="input-area">
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<textarea
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className="markdown-input"
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value={inputValue}
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onChange={(e) => setInputValue(e.target.value)}
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placeholder="支持 Markdown 语法，例如：# 标题 或 - 列表"
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autoFocus
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/>
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<div className="action-buttons">
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<button className="btn-save" onClick={handleSubmit}>
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{editingId ? "更新" : "保存"}
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</button>
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<button className="btn-cancel" onClick={handleCancel}>
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取消
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</button>
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</div>
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</div>
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)}
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{/* 树状列表展示区域 */}
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<div className="todo-tree">
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{groupedTodos.length === 0 && <p className="empty-tip">暂无待办，点击上方添加</p>}
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{groupedTodos.map((group) => (
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// 使用 details/summary 原生标签实现折叠/展开
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<details key={group.date} open className="date-group">
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<summary className="date-header">
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{group.date} <span className="count-badge">{group.items.length}</span>
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</summary>
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<div className="todo-list">
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{group.items.map((todo) => (
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<div
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key={todo.id}
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className="todo-item"
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onClick={() => handleEditClick(todo)}
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title="点击编辑"
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>
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<div className="time-tag">{format(todo.createdAt, "HH:mm")}</div>
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<div className="markdown-content">
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{/* 预览渲染 */}
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<ReactMarkdown>{todo.content}</ReactMarkdown>
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</div>
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</div>
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))}
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</div>
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</details>
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))}
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</div>
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</div>
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);
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}
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};
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export default TestPage;
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export default TestPage;
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Reference in New Issue
Block a user