vue-virtual-draglist

vue-virtual-draglist

A virtual scrolling list component that can be sorted by dragging

For Vue 3 support, see here

Live demo

Simple usage

npm i vue-virtual-draglist -D

Root component:

<template>
  <div>
    <!--
      :draggable="'i'" // use tagName 
      :draggable="'.drag'" // use class
      :draggable="'#drag'" // use id
    -->
    <virtual-drag-list
      :data-key="'id'"
      :data-source="list"
      :draggable="'.drag'"
      style="height: 500px"
      @top="handleToTop"
      @bottom="handleToBottom"
      @ondragend="ondragend"
    >
      <template slot="item" slot-scope="{ record, index, dataKey }">
        <span class="drag">{{ record.id }}</span>
        {{ record.text }}
      </template>
      <template slot="header">
        <div class="loading">top loading...</div>
      </template>
      <template slot="footer">
        <div class="loading">bottom loading...</div>
      </template>
    </virtual-drag-list>
  </div>
</template>

<script>
  import virtualDragList from 'vue-virtual-draglist'

  export default {
    name: 'root',
    components: { virtualDragList },
    data () {
      return {
        list: [{id: '1', text: 'asd'}, {id: '2', text: 'fgh'}, ...]
      }
    },
    methods: {
      handleToTop() {
        ...
      },
      handleToBottom() {
        ...
      },
      ondragstart(list, from, node) {
        ...
      },
      ondragend(list, from, to, changed) {
        ...
      }
    }
  }
</script>

Emits

Emit	Description
top	Event fired when scroll to top
bottom	Event fired when scroll to bottom
ondragstart	Event fired when the drag is started
ondragend	Event fired when the drag is completed

Props

Required props

Prop	Type	Description
data-key	String	The unique identifier of each piece of data, in the form of 'a.b.c'
data-source	Array	data list

Optional props

Commonly used

Prop	Type	Default	Description
keeps	Number	30	The number of lines rendered by the virtual scroll
size	Number	-	The estimated height of each piece of data, you can choose to pass it or not, it will be automatically calculated
direction	String	vertical	vertical/horizontal, scroll direction
draggable	Function/String	-	Specifies which items inside the element should be draggable
animation	Number	150	Animation speed moving items when sorting
keepOffset	Boolean	false	When scrolling up to load data, keep the same offset as the previous scroll
autoScroll	Boolean	true	Automatic scrolling when moving to the edge of the container, for browsers that do not support HTML5 drag events
scrollStep	Number	5	The distance to scroll each frame when autoscrolling
scrollThreshold	Number	15	Threshold to trigger autoscroll

Uncommonly used

Prop	Type	Default	Description
disabled	Boolean	false	Disables the sortable if set to true
delay	Number	10	Delay time of debounce function
rootTag	String	div	Label type for root element
wrapTag	String	div	Label type for list wrap element
itemTag	String	div	Label type for list item element
headerTag	String	div	Label type for header slot element
footerTag	String	div	Label type for footer slot element
wrapClass	String	''	List wrapper element class
wrapStyle	Object	{}	List wrapper element style
itemClass	String	''	List item element class
itemStyle	Object	{}	List item element style
ghostClass	String	''	The class of the mask element when dragging
ghostStyle	Object	{}	The style of the mask element when dragging
chosenClass	String	''	The class of the selected element when dragging

Methods

Use ref to get the method inside the component

Method	Description
reset()	Reset to initial
getSize(key)	Get the size of the current item by unique key value
getOffset()	Get the current scroll height
scrollToTop()	Scroll to top of list
scrollToBottom()	Scroll to bottom of list
scrollToIndex(index)	Scroll to the specified index position
scrollToOffset(offset)	Scroll to the specified offset

Links

• https://github.com/tangbc/vue-virtual-scroll-list/

License

MIT License.