HIsheR
37 lines
2.0 KiB
TypeScript
37 lines
2.0 KiB
TypeScript
import { effect, h } from '@ui-arch/frame';
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import type { SwitchProps } from './types.js';
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/*** 开关：checked 信号双向绑定，loading 加载锁（转圈 + 禁点），disabled 支持布尔或信号禁用，轨道 + 滑块的纯 CSS 实现 ***/
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export function switchButton(props: SwitchProps): HTMLElement {
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const hasLoading = props.loading !== undefined; // 加载态接管禁用写入时，disabled 不再走 h() 双写
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const input = h('input', {
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type: 'checkbox',
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class: 'ua-switch-input',
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role: 'switch', // 用开关语义而非复选框：读屏播报「开关」并跟随选中态
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'aria-label': props.ariaLabel ?? props.label, // 无可见文案时也要有可访问名
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disabled: hasLoading ? undefined : props.disabled, // false/undefined 移除属性，Signal 走响应式
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}) as HTMLInputElement;
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if (props.checked) {
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const checked = props.checked;
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input.addEventListener('change', () => checked(input.checked)); // 用户切换写回信号
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effect(() => {
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if (input.checked !== checked()) input.checked = checked(); // 外部变化写回开关
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});
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}
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if (props.onChange) input.addEventListener('change', () => props.onChange!(input.checked));
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const track = h('span', { class: 'ua-switch-track' }, h('span', { class: 'ua-switch-thumb' }));
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const el = h('label', { class: 'ua-switch' }, input, track);
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if (hasLoading) {
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const ld = props.loading; // 加载态：单一写入口同时管 disabled 与转圈，避免与 disabled 信号双写竞争
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const dis = props.disabled;
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effect(() => {
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const busy = typeof ld === 'function' ? ld() : !!ld;
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input.disabled = busy || (typeof dis === 'function' ? dis() : !!dis); // 加载中锁定交互
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el.classList.toggle('is-loading', busy); // 滑块转圈由 CSS 承载
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input.setAttribute('aria-busy', String(busy)); // 读屏可感知忙碌
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});
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}
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if (props.label) el.append(h('span', { class: 'ua-switch-label' }, props.label));
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return el;
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}
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