Tree-v2 树组件

基础用法

用清晰的层级结构展示信息，可展开或折叠。

::: demo

<template>
    <div style="display: flex; align-items: center;justify-content: center;padding: 16px">
        <wu-plus-tree-v2 draggable="false" show-checkbox="false" data='[{"label":"一级 1","value":"1","children":[{"label":"二级 1-1","value":"1.1","children":[{"label":"三级 1-1-1","value":"1.1.1"}]}]},{"label":"一级 2","value":"2","children":[{"label":"二级 2-1","value":"2.1","children":[{"label":"三级 2-1-1","value":"2.1.1"}]},{"label":"二级 2-2","value":"2.2","children":[{"label":"三级 2-2-1","value":"2.2.1"}]}]},{"label":"一级 3","value":"3","children":[{"label":"二级 3-1","value":"3.1","children":[{"label":"三级 3-1-1","value":"3.1.1"}]},{"label":"二级 3-2","value":"3.2","children":[{"label":"三级 3-2-1","value":"3.2.1"}]}]}]'></wu-plus-tree-v2>
    </div>
</template>
<script>
</script>

:::

多节点选择

适用于需要选择层级时使用。

::: demo

<template>
    <div style="display: flex; align-items: center;justify-content: center;padding: 16px">
        <wu-plus-tree-v2 draggable="false" show-checkbox="true" data='[{"label":"一级 1","value":"1","children":[{"label":"二级 1-1","value":"1.1","children":[{"label":"三级 1-1-1","value":"1.1.1"}]}]},{"label":"一级 2","value":"2","children":[{"label":"二级 2-1","value":"2.1","children":[{"label":"三级 2-1-1","value":"2.1.1"}]},{"label":"二级 2-2","value":"2.2","children":[{"label":"三级 2-2-1","value":"2.2.1"}]}]},{"label":"一级 3","value":"3","children":[{"label":"二级 3-1","value":"3.1","children":[{"label":"三级 3-1-1","value":"3.1.1"}]},{"label":"二级 3-2","value":"3.2","children":[{"label":"三级 3-2-1","value":"3.2.1"}]}]}]'></wu-plus-tree-v2>
    </div>
</template>
<script>
</script>

:::

默认选中

::: demo

<template>
    <div style="display: flex; align-items: center;justify-content: center;padding: 16px">
        <wu-plus-tree-v2 draggable="false" show-checkbox="true" node-key="value" id="tree1" default-checked-keys="['1']" data='[{"label":"一级 1","value":"1","children":[{"label":"二级 1-1","value":"1.1","children":[{"label":"三级 1-1-1","value":"1.1.1"}]}]},{"label":"一级 2","value":"2","children":[{"label":"二级 2-1","value":"2.1","children":[{"label":"三级 2-1-1","value":"2.1.1"}]},{"label":"二级 2-2","value":"2.2","children":[{"label":"三级 2-2-1","value":"2.2.1"}]}]},{"label":"一级 3","value":"3","children":[{"label":"二级 3-1","value":"3.1","children":[{"label":"三级 3-1-1","value":"3.1.1"}]},{"label":"二级 3-2","value":"3.2","children":[{"label":"三级 3-2-1","value":"3.2.1"}]}]}]'></wu-plus-tree-v2>
    </div>
</template>
<script>
</script>

:::

默认展开

可将 Tree 的某些节点设置为默认展开子节点。

::: demo

<template>
    <div style="display: flex; align-items: center;justify-content: center;padding: 16px">
        <wu-plus-tree-v2 draggable="false" default-expanded-keys="['1', '1.1']" show-checkbox="true" node-key="value" id="tree1" default-checked-keys="['1']" data='[{"label":"一级 1","value":"1","children":[{"label":"二级 1-1","value":"1.1","children":[{"label":"三级 1-1-1","value":"1.1.1"}]}]},{"label":"一级 2","value":"2","children":[{"label":"二级 2-1","value":"2.1","children":[{"label":"三级 2-1-1","value":"2.1.1"}]},{"label":"二级 2-2","value":"2.2","children":[{"label":"三级 2-2-1","value":"2.2.1"}]}]},{"label":"一级 3","value":"3","children":[{"label":"二级 3-1","value":"3.1","children":[{"label":"三级 3-1-1","value":"3.1.1"}]},{"label":"二级 3-2","value":"3.2","children":[{"label":"三级 3-2-1","value":"3.2.1"}]}]}]'></wu-plus-tree-v2>
    </div>
</template>
<script>
</script>

:::

节点高亮

highlight-current 属性可以取消节点的选中高亮。

::: demo

<template>
    <div style="display: flex; align-items: center;justify-content: center;padding: 16px">
        <wu-plus-tree-v2 draggable="false"  highlight-current="false" show-checkbox="true" node-key="value" id="tree1" data='[{"label":"一级 1","value":"1","children":[{"label":"二级 1-1","value":"1.1","children":[{"label":"三级 1-1-1","value":"1.1.1"}]}]},{"label":"一级 2","value":"2","children":[{"label":"二级 2-1","value":"2.1","children":[{"label":"三级 2-1-1","value":"2.1.1"}]},{"label":"二级 2-2","value":"2.2","children":[{"label":"三级 2-2-1","value":"2.2.1"}]}]},{"label":"一级 3","value":"3","children":[{"label":"二级 3-1","value":"3.1","children":[{"label":"三级 3-1-1","value":"3.1.1"}]},{"label":"二级 3-2","value":"3.2","children":[{"label":"三级 3-2-1","value":"3.2.1"}]}]}]'></wu-plus-tree-v2>
    </div>
</template>
<script>
</script>

:::

Attributes

| 参数 | 说明 | 类型 | 可选值 | 默认值 | |-----------------------|-----------------------------------------------------------------------|-----------|--------------|--------| | data | 树数据 | Array | -- | [] | | highlight-current | 是否高亮 | Boolean | false、true | true | | default-expand-all | 是否默认展开所有节点 | Boolean | false、true | false | | expand-on-click-node | 是否在点击节点的时候展开或者收缩节点， 默认值为 true， 如果为 false，则只有点箭头图标的时候才会展开或者收缩节点。 | Boolean | false、true | true | | check-on-click-node | 是否在点击节点的时候选中节点，默认值为 false，即只有在点击复选框时才会选中节点。 | Boolean | false、true | false | | default-checked-keys | 默认选中的节点 key | Array | -- | [] | | auto-expand-parent | 展开子节点的时候是否自动展开父节点 | Boolean | false、true | true | | default-expanded-keys | 默认展开的节点的 key 的数组 | Array | -- | [] | | show-checkbox | 节点是否可被选择 | Boolean | false、true | false | | indent | 相邻级节点间的水平缩进，单位为像素 | Number | -- | 18 | | node-key | 每个树节点用来作为唯一标识的属性，整棵树应该是唯一的 | String | -- | -- | | node-key | 每个树节点用来作为唯一标识的属性，整棵树应该是唯一的 | String | -- | -- | | empty-text | 内容为空的时候展示的文本 | String | -- | -- |

Options

| 事件名 | 说明 | 参数 | |----------|----------------------------------|---------| | label | 指定节点标签为节点对象的某个属性值 | String | | children | 指定子树为节点对象的某个属性值 | String | | disabled | 指定节点选择框是否禁用为节点对象的某个属性值 | String | | isLeaf | 指定节点是否为叶子节点，仅在指定了 lazy 属性的情况下生效 | String |

Event

| 事件名 | 说明 | 参数 | |-----------------|----------------|-------------------------------| | node-click | 节点点击 | (event: CustomEvent) => void | | check-change | 节点勾选 | (event: CustomEvent) => void | | current-change | 当前选中节点变化时触发的事件 | (event: CustomEvent) => void | | node-expand | 节点被展开时触发的事件 | (event: CustomEvent) => void | | node-collapse | 节点被关闭时触发的事件 | (event: CustomEvent) => void |

Methods

| 事件名 | 说明 | |-------------------|------------------------------------------------------------------------| | getCurrentNode() | 获取当前被选中节点的 data，若没有节点被选中则返回 null | | setCurrentNode() | 通过 node 设置某个节点的当前选中状态， 使用此方法必须设置 node-key 属性((node) 待被选节点的 node) | | setCurrentKey() | 通过 key 设置某个节点的当前选中状态，使用此方法必须设置 | | node-key | 属性((key) 待被选节点的 key，若为 null 则取消当前高亮的节点) | | getNode() | 根据 data 或者 key 拿到 Tree 组件中的 node | | getCheckedNodes() | 若节点可被选择（即 show-checkbox 为 true）， 则返回目前被选中的节点所组成的数组 | | setCheckedNodes() | 设置目前勾选的节点，使用此方法必须设置 node-key 属性 | | getCheckedKeys() | 若节点可被选择（即 show-checkbox 为 true）， 则返回目前被选中的节点的 key 所组成的数组 | | getCurrentNode() | 获取当前被选中节点的 data，若没有节点被选中则返回 null |

DataOptions

interface DataOptions {
    value: string;
    label: string;
    disabled: string;
}