iter: d09 新增滑块 slider 组件
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import { effect, h } from '@ui-arch/frame';
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import type { SliderProps } from './types.js';
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/*** 滑块:原生 range 承载交互与键盘,value 信号双向绑定;轨道配色走 accent-color 令牌 ***/
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export function slider(props: SliderProps): HTMLElement {
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const value = props.value; // 必需信号:组件不持有数值,一律委托调用方
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const input = h('input', {
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type: 'range',
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class: 'ua-slider-input',
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min: props.min ?? 0,
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max: props.max ?? 100,
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step: props.step ?? 1,
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disabled: props.disabled, // 布尔或信号禁用,h() 直接透传
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}) as HTMLInputElement;
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input.addEventListener('input', () => {
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const next = Number(input.value);
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value(next); // 用户拖动写回信号
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props.onChange?.(next);
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});
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effect(() => {
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const next = String(value());
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if (input.value !== next) input.value = next; // 外部赋值同步滑块位置(等值不重写,避免打断拖动)
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});
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return h(
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'div',
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{ class: 'ua-slider' },
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input,
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props.showValue === false ? null : h('span', { class: 'ua-slider-value' }, () => String(value())),
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);
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}
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