79 lines
3.1 KiB
Markdown
79 lines
3.1 KiB
Markdown
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---
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title: TreeSelect 树形选择
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description: 适用于选择树形的数据结构。
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spline: form
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isComponent: true
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---
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## 引入
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可在 `main.ts` 或在需要使用的页面或组件中引入。
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```js
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import TTreeSelect from '@tdesign/uniapp/tree-select/tree-select.vue';
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```
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### 组件类型
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#### 基础树形选择
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{{ base }}
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#### 多选树形选择
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{{ multiple }}
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### 组件状态
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#### 三级树形选择
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{{ normal }}
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## API
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### TreeSelect Props
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名称 | 类型 | 默认值 | 描述 | 必传
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-- | -- | -- | -- | --
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custom-style | Object | - | 自定义样式 | N
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custom-value | String / Number / Array | - | 自定义选中值，优先级高于 `value`。TS 类型：`TreeSelectValue` | N
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height | String / Number | 336 | 高度，默认单位为 px | N
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keys | Object | - | 用来定义 `value / label / disabled / children` 在 `options` 数据中对应的字段别名，示例：`{ value: 'key', label: 'name', children: 'list' }`。TS 类型：`TreeKeysType`。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/packages/uniapp-components/common/common.ts) | N
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multiple | Boolean | false | 是否允许多选 | N
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options | Array | [] | 选项。TS 类型：`Array<DataOption>` | N
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value | String / Number / Array | - | 选中值。支持语法糖 `v-model:value`。TS 类型：`TreeSelectValue` `type TreeSelectValue = string \| number \| Array<TreeSelectValue>`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/packages/uniapp-components/tree-select/type.ts) | N
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default-value | String / Number / Array | - | 选中值。非受控属性。TS 类型：`TreeSelectValue` `type TreeSelectValue = string \| number \| Array<TreeSelectValue>`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/packages/uniapp-components/tree-select/type.ts) | N
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### TreeSelect Events
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名称 | 参数 | 描述
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-- | -- | --
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change | `(context: { value: TreeSelectValue, level: TreeLevel })` | 点击任何节点均会触发；level 代表当前点击的层级，0 代表最左侧，依次递进。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/packages/uniapp-components/tree-select/type.ts)。<br/>`type TreeLevel = 0 \| 1 \| 2`<br/>
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### TreeSelect External Classes
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类名 | 描述
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-- | --
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t-class | 根节点样式类
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t-class-left-column | 左侧第一列样式类
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t-class-left-item | 左侧第一列子项样式类
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t-class-middle-item | 中间列子项样式类
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t-class-right-column | 右侧第一列样式类
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t-class-right-item | 右侧第一列子项样式类
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t-class-right-item-label | 右侧第一列子项标签样式类
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### CSS Variables
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组件提供了下列 CSS 变量，可用于自定义样式。
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名称 | 默认值 | 描述
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-- | -- | --
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--td-tree-bg-color | @bg-color-container | -
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--td-tree-colum-text-color | @text-color-primary | -
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--td-tree-colum-width | 206rpx | -
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--td-tree-item-active-color | @brand-color | -
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--td-tree-item-disabled-color | @text-color-disabled | -
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--td-tree-item-font-size | 32rpx | -
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--td-tree-item-height | 112rpx | -
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--td-tree-root-bg-color | @bg-color-secondarycontainer | -
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