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vue-huge-tree-oxr

v1.0.9

Published

A based from shenxianhui/[email protected],去除 node-sass,使用 sass,使用 element-ui 搜索框,过滤前收起展开项,添加至多选中限制默认 1000,使用 id, pId 作为唯一寻址提高渲染速度,样式动画调整

Downloads

12

Readme

vue-huge-tree

当数据量很大时, 树形图渲染会异常卡顿, 用户体验极差

本组件有效的解决了这个问题, 渲染速度比普通树形图提高 N 倍

海量数据建议不要放到 data 里,vue 依赖收集会导致内存占用过多。所以此插件没有使用 props 传递海量数据,而是通过 setData(data) 方法

Introductio

A based from shenxianhui/[email protected] 去除 node-sass,使用 sass,使用 element-ui 搜索框,过滤前收起展开项,添加至多选中限制默认 1000,使用 id, pId 作为唯一寻址提高渲染速度,样式动画调整

安装

npm i vue-huge-tree-oxr

引入

import VueHugeTree from 'vue-huge-tree-oxr';
import 'vue-huge-tree-oxr/dist/vue-huge-tree-oxr.css'

使用

<template>
    <huge-tree
                ref="huge-tree"
                show-checkbox
                show-search-bar
                show-node-count
                :expand-level="2"
                :expand-on-click-node="true"
                :default-checked-keys="checkedKeys"
                :search-method="searchMethod"
                @check="onClickCheckbox"
                @click-label="onClickLabel"
                @check-change="onChange"
                @node-click="onNodeClick"
    />
</template>

<script>
import HugeTree from 'vue-huge-tree-oxr';
import 'vue-huge-tree-oxr/dist/vue-huge-tree.css';

export default {
    components: {
        HugeTree
    },
    data() {
        return {
            checkedKeys: [],
            data: [
                {
                    id: '0',
                    label: 'ALL',
                    value: 'value_All',
                    pId: null,
                    children: Array.from(Array(10).keys(), v => ({
                        id: '0-' + v,
                        pId: '0',
                        label: 'label_' + v,
                        value: 'value_' + v,
                        children: Array.from(Array(1000).keys(), cv => ({
                            id: '0-' + v + '-' + cv,
                            pId: '0-' + v,
                            disabled: cv === 1,
                            label: 'label_' + v + '-' + cv,
                            value: 'value_' + v + '-' + cv
                        }))
                    }))
                }
            ]
        }
    },
    mounted() {
        this.getTreeData()
    },
    methods: {
        getTreeData() {
            this.$refs['huge-tree'].setData(this.data)
            this.checkedKeys = ['0-0', '0-1-1']
        },
        onClickCheckbox(node) {
            console.log('onClickCheckbox ~ node>>> :', node)
            console.log('------')
        },
        onClickLabel(node) {
            console.log('onClickLabel ~ node>>> :', node)
            console.log('------')
        },
        onChange(checkedKeys, checkedNodes) {
            console.log('onChange ~ checkedKeys>>> :', checkedKeys)
            console.log('onChange ~ checkedNodes>>> :', checkedNodes)
            const leafNode = checkedNodes.filter(n => n.isLeaf)
            console.log('onChange ~ leafNode>>> :', leafNode)
            console.log('------')
        },
        onNodeClick(node, e) {
            if (!node.isLeaf || node.disabled) return
            node.checked = !node.checked
            this.$refs['huge-tree'].onChecked(node)
        },
        searchMethod(keywords, { value, label }) {
            return keywords.some(
                keyword =>
                    value.toLowerCase().includes(keyword.toLowerCase()) ||
                    label.toLowerCase().includes(keyword.toLowerCase())
            )
        }
    }
};
</script>

Attributes

| 参数 | 说明 | 类型 | 可选值 | 默认值 | | ----------------------- | --------------------------------------------------------- | -------- | ------------------------------------------------------------ | ------------------------------------------ | | (new+)checkOver | 至多选中限制 | number | | 1000 | | (new+)expandOnClickNode | 整行点击展开 | boolean | true | false | | empty-text | 内容为空的时候展示的文本 | string | — | '暂无数据' | | (delete-)~~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 | — | 'id' | | highlight-current | 是否高亮当前选中节点 | boolean | true | false | | expand-level | 节点展开的层级 | number | -1: 展开所有节点;1: 展开第一层 (最外层);2: 展开第二层;... | -1 | | indent | 相邻级节点间的水平缩进,单位为像素 | number | — | 16 | | show-node-count | 显示节点对应的数据量 | boolean | true | false | | show-search-bar | 显示搜索框, 多个关键字之间用英文逗号分隔 | boolean | true | false | | search-method | 自定义搜索逻辑 | Function | keywords,node | 根据label过滤,return boolean | | placeholder | 搜索框的占位文本 | string | — | 请输入关键字, 多个关键字之间用英文逗号分隔 | | default-expanded-keys | 默认展开的节点的 key 的数组 | array | — | — | | loading | 是否显示数据加载时的状态 | boolean | true | false | | loading-text | 数据加载状态时提示的文字 | string | — | 'loading...' | | checked-action | 点击 label 选中模式 | string | 'none': 不选中;'click': 单击选中;'dblclick': 双击选中 | 'none' | | show-checkbox | 节点是否可被选择 | boolean | true | false | | show-checkbox-leaf-only | 是否仅叶子节点展示 checkbox, show-checkbox 为 true 时有效 | boolean | true | false | | default-checked-keys | 默认勾选的节点的 key 的数组 (需要 setData 之后赋值) | | | | | 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 | boolean | true | false |

Methods

| 方法名称 | 说明 | 参数 | | --------------- | --------------------------------------------------------- | ------------------------------------------------------------------ | | setData | 导入数据结构 | object[] | | setCheckedKeys | 通过 keys 设置目前勾选的节点 | 勾选节点的 key 的数组 | | setCheckedNodes | 设置目前勾选的节点 | 勾选节点数据的数组 | | getCheckedKeys | 若节点可被选择, 则返回目前被选中的节点的 key 所组成的数组 | — | | getCheckedNodes | 若节点可被选择, 则返回目前被选中的节点所组成的数组 | — | | clearChecked | 清空所有已选中的节点 | — | | setExpand | 设置目前展开的节点 | 展开节点的 key 的数组 | | showCheckedOnly | 只展示选中的项, 此方法会置空过滤条件 | (isOnlyInCheckedSearch): 是否只在选中的节点里进行筛选, 默认 true | | restore | 对 showCheckedOnly 之后进行恢复 | — | | update | 手动更新选中状态 | — | | clear | 清空内存占用 | — |

Events

| 事件名称 | 说明 | 回调参数 | | ------------ | ------------------------- | ------------------------------------------------------------ | | check-change | 选中状态变化触发 | (checkedKeys, checkedNodes) 共两个参数, 依次为: 已选节点的 key 列表; 已选节点列表 | | check | 当复选框被点击的时候触发 | 当前节点 | | click-label | 节点 label 被点击时的回调 | 当前节点 | | node-click | 行点击事件 | (item, e)当前行,原生事件 |

Scoped Slot

| name | 说明 | | ------------------- | ---------------------------------------------------------------------------- | | (new+)expand-icon | 非子节点前置,例:<template #expand-icon="{item,index}"></template> | | (new+)leaf-icon | 子节点前置,例:<template #leaf-icon="{item,index}"></template> | | — | 自定义树节点的内容, 例: <template v-slot="node">{{ node }}</template> | | search-bar | 自定义搜索框, 例: <template #pre-input="{func}"></template> func:过滤方法 | | loading | 自定义加载中 slot, 例: <template v-slot:loading>加载中...</template> |

数据结构

| 属性 | 说明 | 类型 | 可选值 | 默认值 | | ---------------- | ------------------------------------------------- | ---------------- | ------ | ------ | | label | 节点标签 | string | — | — | | id | 节点唯一标识 (属性名受 node-key 影响, 默认为"id") | | | | | (update~)pId | 父节点的 key (根节点必须为 null) | string | number | — | — | | disabled | 设置禁用状态 | boolean | true | false | | children | 节点子元素 | array | — | — |

节点结构

| 属性 | 说明 | 类型 | | ------------- | ------------------------------------------------- | ---------------- | | label | 节点标签 | string | | disabled | 禁用状态 | boolean | | id | 节点唯一标识 (属性名受 node-key 影响, 默认为"id") | string | number | | (update~)pId | 父节点的 key (根节点必须为 null) | string | number | | children | 节点子元素 | array | | checked | 勾选状态 | boolean | | hideCheckbox | 隐藏选择框 | boolean | | indeterminate | 节点的子树中是否是部分选中 | boolean | | isLeaf | 是否为叶子节点 | boolean | | path | 节点位置 | array | | isExpand | 是否展开 | boolean | | hidden | 是否隐藏 | boolean | | leafCount | 后代元素数量 | number |