added DragAndDrop component

This commit is contained in:
Djeeberjr 2021-08-01 21:41:38 +02:00
parent 62cebf7c71
commit ead5c0f322
2 changed files with 101 additions and 0 deletions

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import React from "react"
import { useState } from "react"
import { useEffect } from "react"
import style from "./../style/DragAndDrop.module.scss"
interface Props {
onDrop?: ()=>void
onEnter?: (event: DragEvent)=>void
onLeave?: (event: DragEvent)=>void
onDragOver?: (event: DragEvent)=>void
handleDrop?: (files: FileList)=>void
}
const DragAndDrop: React.FC<Props> = (props) => {
const dropRef = React.createRef<HTMLDivElement>()
const [hover,setHover] = useState(false)
function handleDragEnter(event: DragEvent) {
// console.debug("dragenter",event)
event.preventDefault()
event.stopPropagation()
setHover(true)
props.onEnter?.(event)
}
function handleDragLeave(event: DragEvent) {
// console.debug("dragleave",event)
event.preventDefault()
event.stopPropagation()
setHover(false)
props.onLeave?.(event)
}
function handleDragOver(event:DragEvent) {
event.preventDefault()
event.stopPropagation()
setHover(true)
props.onDragOver?.(event)
}
function handleDrop(event: DragEvent) {
console.debug("drop",event)
event.preventDefault()
event.stopPropagation()
setHover(false)
props.onDrop?.()
if (event.dataTransfer?.files && event.dataTransfer.files.length > 0) {
props.handleDrop?.(event.dataTransfer.files)
// event.dataTransfer.clearData()
}
}
useEffect(()=>{
if(dropRef.current){
console.debug("Add drag event listner")
dropRef.current.addEventListener("dragenter",handleDragEnter)
dropRef.current.addEventListener("dragleave",handleDragLeave)
dropRef.current.addEventListener("dragover",handleDragOver)
dropRef.current.addEventListener("drop",handleDrop)
return ()=>{
if (dropRef.current){
console.debug("Remove drag event listner")
dropRef.current.removeEventListener("dragenter",handleDragEnter)
dropRef.current.removeEventListener("dragleave",handleDragLeave)
dropRef.current.removeEventListener("dragover",handleDragOver)
dropRef.current.removeEventListener("drop",handleDrop)
}
}
}
},[])
return (
<div ref={dropRef} className={`${style.dragAndDrop} ${hover? style.active:""}`}>
{props.children}
</div>
)
}
export default DragAndDrop

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.active{
border: dashed grey 4px;
background-color: rgba(255,255,255,.8);
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
z-index: 2;
}
.dragAndDrop{
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
height: 100%;
position: absolute;
z-index: 2;
}