Vue's Drag And Drop Tree Components

vue-drag-tree

It's a tree components(Vue2.x) that allow you to drag and drop the node to exchange their data .

Feature

Double click on an node to turn it into a folder
Drag and Drop the tree node, even between two different levels
Controls whether a particular node can be dragged and whether the node can be plugged into other nodes
Append/Remove Node in any level (#TODO)

Getting Start

---

Install

npm install vue-drag-tree --save

Usage

A Simple Project Using vue-drag-tree

main.js

import Vue from 'vue'
import VueDragTree from 'vue-drag-tree'

Vue.component('vue-drag-tree', VueDragTree)

test.vue

<template>
	<vue-drag-tree :data='data' :allowDrag='allowDrag' :allowDrop='allowDrop' :defaultText='"New Node"' @current-clicked='curNodeClicked' @drag="dragHandler" @drag-enter="dragEnterHandler" @drag-leave="dragLeaveHandler" @drag-over="dragOverHandler" @drag-end="dragEndHandler" @drop="dropHandler">
    </vue-drag-tree>
</template>
<script>
export default{
  data(){
    return{
      data: [
        {
          name: 'Node 0-0',
          id: 0,
          children: [
            {
              name: 'Node 1-1',
              id: 3,
              children: [
                {
                  name: 'Node 2-1',
                  id: 4,
                  children: []
                },
                {
                  name: 'Node 2-2',
                  id: 10,
                  children: []
                }
              ]
            },
            {
              name: 'Node 1-2',
              id: 13,
              children: []
            }
          ]
        },
        {
          name: 'Node 0-1',
          id: 14,
          children: []
        }
      ]
    }
  },
  methods: {
   	allowDrag(model, component) {
      if (model.name === 'Node 0-1') {
        // can't be dragged
        return false;
      }
      // can be dragged
      return true;
    },
    allowDrop(model, component) {
      if (model.name === 'Node 2-2') {
        // can't be placed
        return false;
      }
      // can be placed
      return true;
    },
    curNodeClicked(model, component) {
      // console.log('curNodeClicked', model, component);
    },
    dragHandler(model, component, e) {
      // console.log('dragHandler: ', model, component, e);
    },
    dragEnterHandler(model, component, e) {
      // console.log('dragEnterHandler: ', model, component, e);
    },
    dragLeaveHandler(model, component, e) {
      // console.log('dragLeaveHandler: ', model, component, e);
    },
    dragOverHandler(model, component, e) {
      // console.log('dragOverHandler: ', model, component, e);
    },
    dragEndHandler(model, component, e) {
      // console.log('dragEndHandler: ', model, component, e);
    },
    dropHandler(model, component, e) {
      // console.log('dropHandler: ', model, component, e);
    }
  }
}
<script>

API

---

Attributes

Name	Description	Type	Default
data	data of the tree	Array	－－
defaultText	新生成的节点的文本(name属性)	String	新增节点
allowDrag	Judging which node can be dragged	Function	()=>true
allowDrop	Judging which node can be plugged into other nodes	Function	()=>true

Method

Name	Description	arguments
current-clicked	Tell you which node was clicked	(model,component) model: node data was clicked． component: VNode data for the node was clicked
drag	The drag event is fired every few hundred milliseconds as an node is being dragged by the user	(model,component,e) model: node data was dragged. component: VNode data for the node was dragged; e: drag event
drag-enter	The drag-enter event is fired when a dragged node enters a valid drop target	(model,component,e) model: data of the valid drop target; component: VNode of the valid drop target; e: drag event
drag-leave	The drag-leave event is fired when a dragged node leaves a valid drop target	(model,component,e) model: data of the valid drop target; component: VNode of the valid drop target; e: drag event
drag-over	The drag-over event is fired when an node is being dragged over a valid drop target	(model,component,e) model: data of the valid drop target; component: VNode of the valid drop target; e: drag event
drag-end	The drag-end event is fired when a drag operation is being ended	(model,component,e) model: node data was dragged. component: VNode data for the node was dragged; e: drag event
drop	The drop event is fired when an node is dropped on a valid drop target.	(model,component,e) model: data of the valid drop target; component: VNode of the valid drop target; e: drag event

GitHub