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@ -1,16 +1,11 @@
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import { Search } from 'lucide-react';
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import { Search } from 'lucide-react';
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import React, { useState } from 'react';
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import React, { useState, useEffect } from 'react';
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interface MenuItem {
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interface MenuItem {
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label: string;
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label: string;
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key: string;
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key: string;
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}
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}
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// 定义 TopNavProps 接口,描述组件的 props 类型
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// menuItems? 菜单项数组
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// activeKey: 当前激活的菜单项
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// onSearch: 搜索回调函数
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// onItemClick: 菜单点击回调函数
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interface TopNavProps {
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interface TopNavProps {
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menuItems?: MenuItem[];
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menuItems?: MenuItem[];
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activeKey?: string;
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activeKey?: string;
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@ -18,11 +13,6 @@ interface TopNavProps {
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onItemClick?: (key: string) => void;
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onItemClick?: (key: string) => void;
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}
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}
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//定义 TopNav 组件,类型为 React 函数组件,接收 TopNavProps 类型的 props
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//解构并设置 menuItems 默认值,如果父组件没有传入则使用默认的6个菜单项
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// activeKey: 当前激活的菜单项
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// onSearch: 搜索回调函数
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// onItemClick: 菜单点击回调函数
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export function TopNav({
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export function TopNav({
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menuItems = [
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menuItems = [
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{ label: '首页', key: 'home' },
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{ label: '首页', key: 'home' },
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@ -32,35 +22,37 @@ export function TopNav({
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{ label: '联系热线', key: 'hotline' },
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{ label: '联系热线', key: 'hotline' },
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{ label: '综合服务', key: 'service' },
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{ label: '综合服务', key: 'service' },
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],
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],
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activeKey: externalActiveKey, // 从外部传入的 activeKey
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activeKey: externalActiveKey,
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onSearch,
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onSearch,
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onItemClick,
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onItemClick,
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}: TopNavProps){
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}: TopNavProps){
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// 使用外部传入的 activeKey,如果没有则使用内部状态
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// 创建内部状态 internalActiveKey,默认值为 'home',用于内部管理激活状态
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const [internalActiveKey, setInternalActiveKey] = useState('home');
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const [internalActiveKey, setInternalActiveKey] = useState('home');
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// 如果外部传入了 activeKey 则使用外部的,否则使用内部状态(支持受控和非受控模式)
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const currentActiveKey = externalActiveKey !== undefined ? externalActiveKey : internalActiveKey;
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const currentActiveKey = externalActiveKey !== undefined ? externalActiveKey : internalActiveKey;
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// 创建搜索关键词状态,初始为空字符串
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const [searchKeyword, setSearchKeyword] = useState('');
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const [searchKeyword, setSearchKeyword] = useState('');
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// 处理搜索提交事件, 阻止默认表单提交行为,调用搜索回调函数
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const [activeIndex, setActiveIndex] = useState(0);
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const [prevIndex, setPrevIndex] = useState(0);
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// 监听激活项变化,更新索引和动画方向
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useEffect(() => {
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const currentIndex = menuItems.findIndex(item => item.key === currentActiveKey);
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setPrevIndex(activeIndex);
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setActiveIndex(currentIndex);
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}, [currentActiveKey, menuItems, activeIndex]);
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const handleSearchSubmit = (e: React.FormEvent) => {
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const handleSearchSubmit = (e: React.FormEvent) => {
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e.preventDefault();
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e.preventDefault();
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onSearch?.(searchKeyword); // .? 可选链操作符,确保 onSearch 存在时才调用
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onSearch?.(searchKeyword);
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};
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};
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// 定义菜单项点击处理函数,如果外部没有传入 activeKey 则更新内部状态,调用点击回调函数
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const handleItemClick = (item: MenuItem) => {
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const handleItemClick = (item: MenuItem) => {
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// 更新内部状态(如果使用内部状态)
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if (externalActiveKey === undefined) {
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if (externalActiveKey === undefined) {
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setInternalActiveKey(item.key);
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setInternalActiveKey(item.key);
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}
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}
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// 调用外部回调函数
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onItemClick?.(item.key);
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onItemClick?.(item.key); // .? 可选链操作符,确保 onItemClick 存在时才调用
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};
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};
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return (
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return (
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<div className="h-14 flex items-center justify-center px-8 bg-white">
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<div className="h-20 flex items-center justify-center px-8 bg-white">
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{/* 搜索框与导航菜单组合 */}
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{/* 搜索框与导航菜单组合 */}
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<div className="flex items-center space-x-4">
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<div className="flex items-center space-x-4">
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{/* 搜索框 */}
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{/* 搜索框 */}
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@ -71,7 +63,7 @@ export function TopNav({
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value={searchKeyword}
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value={searchKeyword}
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onChange={(e) => setSearchKeyword(e.target.value)}
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onChange={(e) => setSearchKeyword(e.target.value)}
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placeholder="搜索..."
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placeholder="搜索..."
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className="pl-10 pr-4 py-2 text-sm rounded-lg border border-gray-300 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent w-64 transition-all duration-200 hover:shadow-sm"
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className="pl-10 pr-4 py-2 text-sm border border-gray-300 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent w-64 transition-all duration-200 hover:shadow-sm"
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/>
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/>
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<span className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400">
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<span className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400">
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<Search className="w-5 h-5" />
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<Search className="w-5 h-5" />
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@ -80,17 +72,33 @@ export function TopNav({
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</form>
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</form>
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{/* 导航菜单 */}
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{/* 导航菜单 */}
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<ul className="flex space-x-2">
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<ul className="flex space-x-8 relative">
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{menuItems.map((item) => {
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{/* 滑动背景层 */}
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const isActive = currentActiveKey === item.key; // 判断当前项是否激活
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<div
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className="absolute inset-y-0 z-0 transition-all duration-500 ease-out"
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style={{
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left: `${activeIndex * (100 / menuItems.length)}%`,
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width: `${100 / menuItems.length}%`,
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clipPath: 'polygon(0% 0%, 80% 0%, 100% 100%, 20% 100%)', // 向左倾斜的平行四边形
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background: 'linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%)',
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transform: `translateX(${(prevIndex - activeIndex) * 100}%)`,
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}}
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/>
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{menuItems.map((item, index) => {
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const isActive = currentActiveKey === item.key;
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return (
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return (
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<li key={item.key}>
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<li
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key={item.key}
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className="relative z-10"
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style={{ width: `${100 / menuItems.length}%` }}
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>
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<button
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<button
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onClick={() => handleItemClick(item)}
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onClick={() => handleItemClick(item)}
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className={`px-4 py-2 text-sm font-medium rounded-lg transition-all duration-200 ${
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className={`w-full h-full px-4 py-2 text-2xl transition-all duration-300 ${
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isActive
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isActive
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? 'bg-blue-600 text-white shadow-md' // 激活状态样式
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? 'text-white' // 激活状态文字颜色
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: 'text-gray-600 hover:bg-blue-100 hover:text-blue-700' // 非激活状态样式
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: 'text-gray-600 hover:text-black cursor-pointer' // 非激活状态样式
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}`}
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}`}
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>
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>
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{item.label}
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{item.label}
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