virtual-scroller-tree-vue2

virtual-scroller-tree-vue2

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Introduction

A tree component based on vue2.x that supports a small amount of data or a large amount of data, multiple functions, and virtual scrolling.

Based on the tree style and function extracted from element-ui(License:MIT), combined with vue-virtual-scroller(License:MIT) tree component.

v1.0 Feature List

• Large data volume supports virtual scrolling
• Display of basic tree data
• Support checkbox selection
• Support lazy loading
• Expanded by default and selected by default
• Disable node
• Select nodes and obtain selected node information in a variety of ways
• Support custom node content
• Support node filtering
• Support accordion mode under non-virtual scrolling
• Support node drag and drop when non-lazy loading

Features

• Support virtual scrolling
• Not only supports tree-shaped data display with large amounts of data, but also supports data manipulation and modification

Install

npm install virtual-scroller-tree-vue2

or

yarn add virtual-scroller-tree-vue2

Mount

mount with global

Import in the main.js file:

import Vue from "vue";
import VirtualScrollerTree from "virtual-scroller-tree-vue2";
// Style file, you can customize the style or theme according to your needs
import "virtual-scroller-tree-vue2/src/assets/index.scss"

Vue.use(VirtualScrollerTree)

mount with component

Import in the component：

import VirtualScrollerTree from "virtual-scroller-tree-vue2";
// Style file, you can customize the style or theme according to your needs
import "virtual-scroller-tree-vue2/src/assets/index.scss"

export default {
  components: {
    VirtualScrollerTree
  }
}

Usage:

:warning: When using virtual scrolling, node-key must be set

<template>
  <div class="ve-tree" style="height:calc(100vh - 20px)">
  <!-- Just remove the height parameter when not using virtual scrolling -->
    <virtual-scroller-tree
      ref="veTree"
      node-key="id"
      height="calc(100vh - 20px)"
      :data="treeData"
      :props="props"
    ></virtual-scroller-tree>
  </div>
</template>

<script>
export default {
  data() {
    return {
      props: {
        label: "name",
        children: "children"
      },
      treeData: []
    };
  },
  created() {
    const data = [],
      root = 8,
      children = 3,
      base = 1000;
    for (let i = 0; i < root; i++) {
      data.push({
        id: `${i}`,
        name: `test-${i}`,
        children: []
      });
      for (let j = 0; j < children; j++) {
        data[i].children.push({
          id: `${i}-${j}`,
          name: `test-${i}-${j}`,
          children: []
        });
        for (let k = 0; k < base; k++) {
          data[i].children[j].children.push({
            id: `${i}-${j}-${k}`,
            name: `test-${i}-${j}-${k}`
          });
        }
      }
    }
    this.treeData = data;
  }
};
</script>

Change SCSS variables in the project

By creating a new style file, such as: ve-tree-var.scss, write the following content：

/* Change theme color variable */
$--color-primary: #ea5404;

/* Change the icon font path variable, required */
$--font-path: "~virtual-scroller-tree-vue2/src/assets/fonts";

@import "virtual-scroller-tree-vue2/src/assets/index.scss";

:warning: It should be noted that it is necessary to override the font path variable, and assign it to the relative path where the icon icon in virtual-scroller-tree-vue2 is located.

Then directly import the above style files in main.js：

import Vue from 'vue'
import VirtualScrollerTree from "virtual-scroller-tree-vue2";
import "./css/ve-tree-var.scss"

Vue.use(VirtualScrollerTree)

Other properties and methods

From element-ui official document
When you need to use virtual scrolling, just add the height property, such as:

<virtual-scroller-tree :data="data" height="calc(100vh - 20px)" :props="defaultProps" @node-click="handleNodeClick"></virtual-scroller-tree>

Quick view of examples and api

License

MIT