# 单选列表 · RadioList

- 页面: https://jiguang132.com/zh/resources/astryx/docs/radio-list
- 资源: Astryx (https://jiguang132.com/zh/resources/astryx.md)
- 全部指南: https://jiguang132.com/zh/resources/astryx/docs.md

单选列表用于表单输入场景。下面的官方示例展示原生用法与状态，属性名保持上游 API。

## 安装与前置条件

```bash
npm install @astryxdesign/core@0.7.1 @astryxdesign/theme-neutral@0.7.1 @stylexjs/stylex@0.19.0
```

需要 React 19+，按顺序导入基础 CSS 和主题，并设置 Theme Provider。参见[开始使用](/resources/astryx/docs/getting-started)。

## 示例与使用方式

- **单选列表 · 综合展示 1**：首先体验这个示例，再查看代码理解组件的组合方式。
- **单选列表 · 综合展示 2**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。
- **单选列表 · 交互示例 3**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。
- **单选列表 · 基础用法 4**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。
- **单选列表 · 交互示例 5**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。
- **单选列表 · 交互示例 6**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。
- **单选列表 · 输入校验 7**：可交互查看这一用法的行为，复制代码时保留它实际使用的属性与导入。

## API 与上游详细参考

优先使用 0.7.1 官方中文说明；上游尚未提供中文的条目保留英文。属性名、类型及默认值保持原生 API，不把示例状态名称当成组件属性。

## Radio List

A group of options where only one can be selected at a time. All options are visible at once, making it easy to compare choices. Use it when users need to pick one option from a small set.

| 属性 | 类型 | 默认值 | 说明 |
|---|---|---|---|
| label * | string |  | Label text for the radio group (always rendered for accessibility). |
| value * | string |  | The currently selected value. |
| onChange * | (value: string) => void |  | Callback fired when the selected value changes. |
| children * | ReactNode |  | RadioListItem elements. |
| isLabelHidden | boolean | false | Whether to visually hide the label. |
| description | string |  | Description text displayed below the label. |
| orientation | 'vertical' \| 'horizontal' | 'vertical' | Layout direction of the radio items. |
| isDisabled | boolean | false | Whether all radio items are disabled. |
| htmlName | string |  | The HTML name attribute shared by the radio inputs, useful for form submissions. When omitted, a unique internal name still groups the radios. |
| disabledMessage | string |  | Explains why the group is disabled. Applies to the whole-group disabled state (isDisabled), not per item. With isDisabled, shows a tooltip on hover/keyboard focus and keeps the radios focusable via aria-disabled (selection stays blocked). Use this instead of wrapping a disabled RadioList in Tooltip. Disabled controls swallow the hover events an external Tooltip needs. |
| isRequired | boolean | false | Whether the radio group is required. |
| isOptional | boolean | false | Whether the field is optional (mutually exclusive with isRequired). |
| status | {type: 'warning' \| 'error' \| 'success', message?: string} |  | Status indicator ({ type, message }). |
| size | 'sm' \| 'md' | 'md' | Size of the radio controls. |
| labelTooltip | string |  | Tooltip text for an info icon next to the label. |
| width | SizeValue |  | Width of the field (number = pixels, string used as-is, e.g. "100%"). Sizes the whole field (label, control, and status) so they stay aligned. |
| containerXstyle | StyleXStyles |  | StyleX styles for the field container (label, control, and status together). No effect inside InputGroup (style the InputGroup instead) or in a `horizontal-labels` FormLayout. Root `xstyle`, `className`, and `style` are not accepted. |
| containerClassName | string |  | Class name for the field container. Same targeting as `containerXstyle`. |
| containerStyle | CSSProperties |  | Inline styles for the field container. Same targeting as `containerXstyle`. |
| controlXstyle | StyleXStyles |  | StyleX styles for the visual control box: the element that paints the border and background and holds icons and end controls. Never the native input. |
| controlClassName | string |  | Class name for the visual control box. |
| controlStyle | CSSProperties |  | Inline styles for the visual control box. |

### 使用建议

- Keep the number of options small: typically 2 to 7 choices.
- Use clear, concise labels that differentiate each option at a glance.
- Pre-select a default option when there's a sensible default; don't leave the group empty unless the choice is optional.
- 避免：Use when multiple selections are needed; use CheckboxList instead.
- 避免：Use for long lists; use Selector for better discoverability.
- 避免：Use horizontal layout with more than 4 options; it wraps awkwardly.
- 避免：Wrap a disabled RadioList in Tooltip to explain why it is disabled; disabled controls swallow the hover events the wrapper needs. Use the disabledMessage prop instead.

### 主题 API

```json
{
  "targets": [
    {
      "className": "astryx-radio-list",
      "visualProps": [
        "orientation",
        "size"
      ]
    },
    {
      "className": "astryx-radio-list-item",
      "visualProps": [
        "size"
      ],
      "states": [
        "selected",
        "disabled"
      ]
    },
    {
      "className": "astryx-radio-indicator",
      "visualProps": [
        "size"
      ],
      "states": [
        "checked",
        "disabled"
      ]
    },
    {
      "className": "astryx-radio-indicator-dot",
      "visualProps": [
        "size"
      ]
    }
  ]
}
```

## RadioListItem



### 无障碍

- **Radio circle**: The circle edge (unselected) and fill (selected) must have at least 3:1 contrast with the surface behind them. For Hover and Pointer down, measure the final colors after the tint and the pressed overlay are applied. — 3:1

### 组件结构

- **Header**: Optional heading above the radio list.
- **Children**: The radio list items rendered as selectable options.
- **Label/Value**: The text label and associated value for each radio item.

## Radio List Item

单个单选选项，包含标签、描述和内容插槽。

| 属性 | 类型 | 默认值 | 说明 |
|---|---|---|---|
| label * | ReactNode |  | 单选选项的主标签。富内容标签可包含链接或按钮，它们保留自身行为且不会选中该选项。标签文本用于命名单选框；仅当可见文本缺失时使用 aria-label，否则覆盖值必须保留全部可见文字。 |
| aria-label | string |  | 单选框的纯文本无障碍名称，应用于控件本身而非整行。它会覆盖由标签推导出的名称。仅当富标签没有可见文本时才完全替代；否则必须保留全部可见文字。 |
| value * | string |  | 此单选选项的值。 |
| description | ReactNode |  | 显示在标签下方的次要内容。链接和按钮保留自身的点击行为——整行仅将非交互区域的点击委派给单选框。 |
| isDisabled | boolean | false | 是否禁用此单个单选选项。 |
| startContent | ReactNode |  | 在单选圆圈前渲染的内容。 |
| endContent | ReactNode |  | 在标签后渲染的内容。 |

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