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| 1 | +--- |
| 2 | +/** |
| 3 | + * 共享语言切换器 —— kimi 风格「翻译图标按钮 + 下拉菜单」。 |
| 4 | + * |
| 5 | + * apps/www（首页导航）与 apps/ossheroes（Navbar）复用，替换旧的 |
| 6 | + * 「EN / 简 / 繁」三文字链接并排，解决移动端拥挤折行问题。 |
| 7 | + * |
| 8 | + * 行为契约（与全站 URL 级三语言方案一致，勿改）： |
| 9 | + * - 菜单项即跨语言跳转链接：href = 当前页面对应语言 URL（localePath）， |
| 10 | + * 带 hreflang + rel="alternate"，onclick 写 localStorage('osw-language')； |
| 11 | + * - 勾选状态构建期按 props.locale 直接渲染进 HTML，纯静态、无客户端数据依赖； |
| 12 | + * - 开关交互为下方一小段 vanilla JS：点击切换、点击外部 / Esc 关闭，aria-expanded 同步。 |
| 13 | + * |
| 14 | + * 样式：scoped，颜色取自 --osw-* 设计 token（两个 app 均已引入 tokens.css）， |
| 15 | + * 暗色卡片 + 圆角 + 细边框 + 阴影，菜单相对按钮右对齐。 |
| 16 | + */ |
| 17 | +import { LOCALES, localePath, type Locale } from './i18n'; |
| 18 | +
|
| 19 | +interface Props { |
| 20 | + /** 当前页面语言（构建期已知，决定 ✓ 勾选与 aria-current） */ |
| 21 | + locale: Locale; |
| 22 | + /** locale 中立的规范路径（如 '/'、'/heroes/'、'/hero/<login>/'），供跨语言跳转 */ |
| 23 | + path: string; |
| 24 | +} |
| 25 | +
|
| 26 | +const { locale, path } = Astro.props; |
| 27 | +
|
| 28 | +/** 下拉菜单显示的完整语言名 */ |
| 29 | +const LANG_NAMES: Record<Locale, string> = { |
| 30 | + en: 'English', |
| 31 | + 'zh-CN': '简体中文', |
| 32 | + 'zh-TW': '繁體中文', |
| 33 | +}; |
| 34 | +
|
| 35 | +const items = LOCALES.map((item) => ({ |
| 36 | + locale: item, |
| 37 | + href: localePath(item, path), |
| 38 | + name: LANG_NAMES[item], |
| 39 | + current: item === locale, |
| 40 | +})); |
| 41 | +--- |
| 42 | + |
| 43 | +<div class="lang-switcher" data-lang-switcher> |
| 44 | + <button |
| 45 | + type="button" |
| 46 | + class="lang-switcher-toggle" |
| 47 | + aria-haspopup="true" |
| 48 | + aria-expanded="false" |
| 49 | + aria-label="Switch language / 切换语言" |
| 50 | + > |
| 51 | + <svg aria-hidden="true" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> |
| 52 | + <path d="m5 8 6 6"></path> |
| 53 | + <path d="m4 14 6-6 2-3"></path> |
| 54 | + <path d="M2 5h12"></path> |
| 55 | + <path d="M7 2h1"></path> |
| 56 | + <path d="m22 22-5-10-5 10"></path> |
| 57 | + <path d="M14 18h6"></path> |
| 58 | + </svg> |
| 59 | + </button> |
| 60 | + <ul class="lang-switcher-menu" aria-label="Language / 语言"> |
| 61 | + {items.map((item) => ( |
| 62 | + <li> |
| 63 | + <a |
| 64 | + href={item.href} |
| 65 | + hreflang={item.locale} |
| 66 | + rel="alternate" |
| 67 | + aria-current={item.current ? 'true' : undefined} |
| 68 | + onclick={`try{window.localStorage.setItem('osw-language','${item.locale}')}catch(e){}`} |
| 69 | + class:list={['lang-switcher-item', { 'is-active': item.current }]} |
| 70 | + > |
| 71 | + <span>{item.name}</span> |
| 72 | + {item.current && ( |
| 73 | + <svg class="lang-switcher-check" aria-hidden="true" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> |
| 74 | + <path d="M20 6 9 17l-5-5"></path> |
| 75 | + </svg> |
| 76 | + )} |
| 77 | + </a> |
| 78 | + </li> |
| 79 | + ))} |
| 80 | + </ul> |
| 81 | +</div> |
| 82 | + |
| 83 | +<style> |
| 84 | + .lang-switcher { |
| 85 | + position: relative; |
| 86 | + display: inline-flex; |
| 87 | + } |
| 88 | + |
| 89 | + /* 图标按钮：与导航文字链接同节奏（0.5rem 内边距），hover/展开有 subtle 底色 */ |
| 90 | + .lang-switcher-toggle { |
| 91 | + display: inline-flex; |
| 92 | + align-items: center; |
| 93 | + justify-content: center; |
| 94 | + padding: 0.5rem; |
| 95 | + background: none; |
| 96 | + border: none; |
| 97 | + border-radius: 0.5rem; |
| 98 | + color: var(--osw-muted); |
| 99 | + cursor: pointer; |
| 100 | + transition: |
| 101 | + color 0.2s, |
| 102 | + background-color 0.2s; |
| 103 | + } |
| 104 | + .lang-switcher-toggle:hover, |
| 105 | + .lang-switcher.open .lang-switcher-toggle { |
| 106 | + color: var(--osw-primary); |
| 107 | + background-color: oklch(0.85 0.2 140 / 0.08); |
| 108 | + } |
| 109 | + .lang-switcher-toggle:focus-visible { |
| 110 | + outline: 2px solid var(--osw-primary); |
| 111 | + outline-offset: 2px; |
| 112 | + } |
| 113 | + .lang-switcher-toggle svg { |
| 114 | + width: 1.125rem; |
| 115 | + height: 1.125rem; |
| 116 | + } |
| 117 | + |
| 118 | + /* 下拉卡片：暗色 + 圆角 + 细边框 + 阴影，相对按钮右对齐 */ |
| 119 | + .lang-switcher-menu { |
| 120 | + display: none; |
| 121 | + position: absolute; |
| 122 | + right: 0; |
| 123 | + top: calc(100% + 0.375rem); |
| 124 | + z-index: 60; |
| 125 | + min-width: 9.5rem; |
| 126 | + max-width: calc(100vw - 2rem); |
| 127 | + margin: 0; |
| 128 | + padding: 0.375rem; |
| 129 | + list-style: none; |
| 130 | + background-color: var(--osw-card); |
| 131 | + border: 1px solid var(--osw-border); |
| 132 | + border-radius: 0.75rem; |
| 133 | + box-shadow: |
| 134 | + 0 10px 30px oklch(0 0 0 / 0.5), |
| 135 | + 0 2px 8px oklch(0 0 0 / 0.4); |
| 136 | + } |
| 137 | + .lang-switcher.open .lang-switcher-menu { |
| 138 | + display: block; |
| 139 | + } |
| 140 | + |
| 141 | + .lang-switcher-item { |
| 142 | + display: flex; |
| 143 | + align-items: center; |
| 144 | + justify-content: space-between; |
| 145 | + gap: 1rem; |
| 146 | + padding: 0.5rem 0.75rem; |
| 147 | + border-radius: 0.5rem; |
| 148 | + color: var(--osw-muted); |
| 149 | + font-size: 0.875rem; |
| 150 | + line-height: 1.4; |
| 151 | + white-space: nowrap; |
| 152 | + text-decoration: none; |
| 153 | + transition: |
| 154 | + color 0.15s, |
| 155 | + background-color 0.15s; |
| 156 | + } |
| 157 | + .lang-switcher-item:hover, |
| 158 | + .lang-switcher-item:focus-visible { |
| 159 | + color: var(--osw-primary); |
| 160 | + background-color: oklch(0.85 0.2 140 / 0.08); |
| 161 | + outline: none; |
| 162 | + } |
| 163 | + .lang-switcher-item.is-active { |
| 164 | + color: var(--osw-primary); |
| 165 | + } |
| 166 | + .lang-switcher-check { |
| 167 | + width: 1rem; |
| 168 | + height: 1rem; |
| 169 | + flex-shrink: 0; |
| 170 | + } |
| 171 | +</style> |
| 172 | + |
| 173 | +<script> |
| 174 | + /* 语言切换器开关：点击按钮切换，点击外部 / Esc 关闭并同步 aria-expanded。 |
| 175 | + * Astro 会把这段脚本按页面打包一次，多实例共存时用 closest 委托即可。 */ |
| 176 | + function initLangSwitchers() { |
| 177 | + const switchers = document.querySelectorAll<HTMLElement>('[data-lang-switcher]'); |
| 178 | + |
| 179 | + function closeAll(except?: HTMLElement) { |
| 180 | + switchers.forEach((switcher) => { |
| 181 | + if (switcher === except) return; |
| 182 | + switcher.classList.remove('open'); |
| 183 | + switcher.querySelector('.lang-switcher-toggle')?.setAttribute('aria-expanded', 'false'); |
| 184 | + }); |
| 185 | + } |
| 186 | + |
| 187 | + switchers.forEach((switcher) => { |
| 188 | + const toggle = switcher.querySelector<HTMLButtonElement>('.lang-switcher-toggle'); |
| 189 | + if (!toggle) return; |
| 190 | + toggle.addEventListener('click', () => { |
| 191 | + const willOpen = !switcher.classList.contains('open'); |
| 192 | + closeAll(switcher); |
| 193 | + switcher.classList.toggle('open', willOpen); |
| 194 | + toggle.setAttribute('aria-expanded', willOpen ? 'true' : 'false'); |
| 195 | + }); |
| 196 | + }); |
| 197 | + |
| 198 | + document.addEventListener('click', (event) => { |
| 199 | + if (!(event.target as HTMLElement).closest('[data-lang-switcher]')) closeAll(); |
| 200 | + }); |
| 201 | + document.addEventListener('keydown', (event) => { |
| 202 | + if (event.key === 'Escape') { |
| 203 | + closeAll(); |
| 204 | + // Esc 关闭后把焦点还给仍聚焦在菜单内的触发按钮 |
| 205 | + const active = document.activeElement as HTMLElement | null; |
| 206 | + if (active && !active.closest('[data-lang-switcher]')) return; |
| 207 | + active?.closest('[data-lang-switcher]')?.querySelector<HTMLElement>('.lang-switcher-toggle')?.focus(); |
| 208 | + } |
| 209 | + }); |
| 210 | + } |
| 211 | + |
| 212 | + if (document.readyState === 'loading') { |
| 213 | + document.addEventListener('DOMContentLoaded', initLangSwitchers); |
| 214 | + } else { |
| 215 | + initLangSwitchers(); |
| 216 | + } |
| 217 | +</script> |
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