react-virtual-drag-list

react-virtual-drag-list

A virtual scrolling list component that can be sorted by dragging

Live Demo

Simple Usage

npm i react-virtual-drag-list

Root component:

import VirtualList from 'react-virtual-drag-list';

function Virtual() {

  const [list, setList] = useState([{id: '1', text: 'a'}, {id: '2', text: 'b'}, ...]);

  const onDrop = (event) => {
    // dnd complete
    setList(() => event.list);
  }

  // use style and className as jsx used
  return (
    <VirtualList
      className="virtual-list"
      style={{ height: '500px' }}
      dataKey="id"
      dataSource={ list }
      handle=".handle"
      header={ <div className="loading">top loading...</div> }
      footer={ <div className="loading">bottom loading...</div> }
      onDrop={ onDrop }
    >
      {
        (record, index, dataKey) => {
          return (
            <div>
              <span class=".handle">{ index }</span>
              { record.text }
            </div>
          )
        }
      }
    </VirtualList>
  )
}

Props

Callback

Emit	Type	Default	Description
onTop	Function	-	Scrolling to the top of the scroller
onBottom	Function	-	Scrolling to the bottom of the scroller
onDrag	Function	-	Drag is started
onDrop	Function	-	Drag is complete

Required props

Prop	Type	Default	Description
dataKey	String	-	The unique identifier of each piece of data, in the form of 'a.b.c'
dataSource	Array	[]	The data that needs to be rendered

Common used

Prop	Type	Default	Description
header	JSX.Element	-	Top of list
footer	JSX.Element	-	Bottom of list
size	Number	-	Estimated height of each row. You can choose to pass it or not, it will be automatically calculated
keeps	Number	30	The number of lines rendered by the virtual scroll
handle	String	-	Drag handle selector within list items
group	Object/String	-	string: 'name' or object: { name: 'group', put: true/false, pull: true/false/'clone', revertDrag: true/false }
scroller	Document | HTMLElement	-	Virtual list scrolling element
direction	vertical | horizontal	vertical	Scroll direction
debounceTime	Number	0	debounce time on scroll
throttleTime	Number	0	debounce time on scroll
tableMode	Boolean	false	display with table and tbody

Uncommonly used

Prop	Type	Default	Description
draggable	String	'.virutal-dnd-list-item'	Specifies which items inside the element should be draggable
sortable	Boolean	true	Whether the current list can be sorted by dragging
lockAxis	x | y	-	Axis on which dragging will be locked
keepOffset	Boolean	false	When scrolling up to load data, keep the same offset as the previous scroll
disabled	Boolean	false	Disables the sortable if set to true
animation	Number	150	Drag-and-drop's animation delay
autoScroll	Boolean	true	Automatic scrolling when moving to the edge of the container
scrollThreshold	Number	55	Threshold to trigger autoscroll
delay	Number	0	Time in milliseconds to define when the sorting should start
delayOnTouchOnly	Boolean	false	Only delay on press if user is using touch
fallbackOnBody	Boolean	false	Appends the ghost element into the document's body
rootTag	String	div	Label type for root element
wrapTag	String	div	Label type for list wrap element
wrapStyle	Object	{}	List wrapper element style
wrapClass	String	''	List wrapper element class
itemClass	String	'virutal-dnd-list-item'	List item element class
ghostStyle	Object	{}	The style of the mask element when dragging
ghostClass	String	''	The class of the mask element when dragging
chosenClass	String	''	The class of the selected element when dragging

Methods

Use the methods exposed in the component by setting ref

...

const virtualRef = useRef();

const scrollToBottom = () => {
  virtualRef.current.scrollToBottom();
}

return (
  <button onClick={ scrollToBottom }></button>
  <virtualList
    ref={ virtualRef }
    ...
  >
    {
      (record) => <div>{ record.text }</div>
    }
  </virtualList>
)

Prop	Description
getSize(key)	get the height of the specified item by key value
getOffset()	get the current scroll top/left
getClientSize()	Get wrapper element client viewport size (width or height)
getScrollSize()	Get all scroll size (scrollHeight or scrollWidth)
scrollToTop()	scroll to the top of the list
scrollToBottom()	scroll to the bottom of the list
scrollToKey(key)	scroll to the specified data-key
scrollToIndex(index)	scroll to the specified index value
scrollToOffset(offset)	scroll to the specified height