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newhope-virtual-tree

v1.0.1

Published

迁移el-tree-v2使用vue2

Downloads

2

Readme

虚拟化树形控件

NPM version GitHub star fork GitHub Repo stars GitHub forks

简介

参考element-plus中TreeV2改造vue2.x版本虚拟化树形控件
不论你的数据量多大,虚拟树都能毫无压力地处理。

安装

npm install @sangtian152/virtual-tree --save
# or 
yarn add @sangtian152/virtual-tree

引入

import Vue from 'vue';
import VlTree from '@sangtian152/virtual-tree';
import "@sangtian152/virtual-tree/lib/vl-tree.css";

Vue.use(VlTree);

示例

效果展示

演示地址

演示地址.

VirtualTree Attributes

| Attribute | Description | Type | Default | | --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- | --------------------- | ------- | | data | 展示数据 | array | — | | empty-text | 内容为空的时候展示的文本 | string | — | | props | 配置选项,具体看下表 | object | — | | highlight-current | 是否高亮当前选中节点 | boolean | 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 | 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 | | 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 | | check-strictly | 在显示复选框的情况下,是否严格的遵循父子不互相关联的做法,默认为 false | boolean | false | | default-checked-keys | 默认勾选的节点的 key 的数组 | array | — | | current-node-key | 当前选中的节点 | string, number | — | | filter-method | 对树节点进行筛选时执行的方法,返回 true 表示这个节点可以显示, 返回 false 则表示这个节点会被隐藏 | Function(value, data) | — | | indent |相邻级节点间的水平缩进,单位为像素 | number | 16 | | icon | 自定义树节点的图标 | string / Component | - |

props

| Attribute | Description | Type | Default | | --------- | ------------------------------------------------------------------------------------ | -------------- | -------- | | value | 每个树节点用来作为唯一标识的属性,在整棵树中应该是唯一的 | string, number | id | | label | 指定节点标签为节点对象的某个属性值 | string | label | | children | 指定子树为节点对象的某个属性值 | string | children | | disabled | 指定节点选择框是否禁用为节点对象的某个属性值 disabled | string | disabled |

VirtualTree Method

Tree内部使用TreeNode类型的对象来包装用户传入的数据,用来构造树节点之间的关系。 Tree 暴露了以下方法: | Method | Description | Parameters | | --------------- | ---------------------------------------- | ---------------------------------------- | | filter | 对树节点进行筛选操作 | (query: string) | | 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 | (leafOnly: boolean) | | 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 | (leafOnly: boolean) | | setCheckedKeys | 通过 keys 设置目前勾选的节点 | (keys: TreeKey[]) | | setChecked | 通过 key 设置某个节点的勾选状态 | (key: TreeKey, checked: boolean) | | getHalfCheckedNodes | 若节点可被选择(即 show-checkbox 为 true),则返回目前半选中的节点所组成的数组 | - | | getHalfCheckedKeys | 若节点可被选择(即 show-checkbox 为 true),则返回目前半选中的节点的 key 所组成的数组 | - | | getCurrentKey | 获取当前被选中节点的 key,若没有节点被选中则返回 undefined | - | | getCurrentNode | 获取当前被选中节点的 data,若没有节点被选中则返回 undefined | - | | setCurrentKey | 通过 key 设置某个节点的当前选中状态 | (key: TreeKey) | | setData | 设置空间数据 | (data: TreeData) |

VirtualTree Events

| Event Name | Description | Parameters | | ---------------- | ---------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------- | | node-click | 当节点被点击的时候触发 | (data: TreeNodeData, node: TreeNode, e: MouseEvent) | | node-contextmenu | 当节点被鼠标右键点击时会触发该事件 | (e: Event, data: TreeNodeData, node: TreeNode) | | check-change | 节点选中状态发生变化时的回调 | (data: TreeNodeData, checked: boolean) | | check | 当复选框被点击的时候触发 | (data: TreeNodeData, info: { checkedKeys: TreeKey[],checkedNodes: TreeData, halfCheckedKeys: TreeKey[], halfCheckedNodes: TreeData,}) | | current-change | 当前选中节点变化时触发的事件 | (data: TreeNodeData, node: TreeNode) | | node-expand | 节点被展开时触发的事件 | (data: TreeNodeData, node: TreeNode) | | node-collapse | 节点被收起时触发的事件 | (data: TreeNodeData, node: TreeNode) |

VirtualTree Slots

| Name | Description | | ---- | ---------------------------------------------------------------------------------------------- | | - | 自定义树节点的内容。 作用域参数为 { node: TreeNode, data: TreeNodeData } | | icon | 自定义展开收起图标。 作用域参数为 { node: TreeNode, data: TreeNodeData } |