Javascript React/Dnd:使组件同时可拖放
有多个元素,我希望它们可以同时拖动和拖放—使用Javascript React/Dnd:使组件同时可拖放,javascript,reactjs,drag-and-drop,react-dnd,Javascript,Reactjs,Drag And Drop,React Dnd,有多个元素,我希望它们可以同时拖动和拖放—使用react dnd。 这意味着我需要拖动其中一个元素并将其放到另一个元素上 首先,我为MyComponent定义了dragSource。到目前为止,这是可行的。 但是如何为同一个组件设置DropTarget import React, { Component } from 'react' import { DragSource, DropTarget } from 'react-dnd' const elementSource = { begi
react dnd
。
这意味着我需要拖动其中一个元素并将其放到另一个元素上
首先,我为MyComponent定义了dragSource。到目前为止,这是可行的。
但是如何为同一个组件设置DropTarget
import React, { Component } from 'react'
import { DragSource, DropTarget } from 'react-dnd'
const elementSource = {
beginDrag (props) {
return { }
}
}
const elementTarget = {
drop (props, monitor) { }
}
function collect (connect, monitor) {
return {
connectDragSource: connect.dragSource(),
isDragging: monitor.isDragging(),
connectDropTarget: connect.dropTarget(),
isOver: monitor.isOver()
}
}
class MyComponent extends Component {
render () {
const { connectDragSource, isDragging, connectDropTarget, isOver } = this.props
return connectDragSource(
<div style={{ opacity: isDragging ? 0.5 : 1 }} >
Just an example
</div>
)
}
}
export default DragSource('element', elementSource, collect)(MyComponent)
import React,{Component}来自“React”
从'react dnd'导入{DragSource,DropTarget}
常量元素源={
开端(道具){
返回{}
}
}
常量元素目标={
放下(道具,监视器){}
}
功能收集(连接、监视){
返回{
connectDragSource:connect.dragSource(),
IsDraging:monitor.IsDraging(),
connectDropTarget:connect.dropTarget(),
isOver:monitor.isOver()
}
}
类MyComponent扩展组件{
渲染(){
const{connectDragSource,IsDraging,connectDropTarget,isOver}=this.props
返回connectDragSource(
只是一个例子
)
}
}
导出默认DragSource('element',elementSource,collect)(MyComponent)
这在React DND中是可能的。
它需要将可拖动元素同时导出为源和目标
您可以将组件定义为
class MyComponent extends Component {
render () {
const { connectDragSource, isDragging, connectDropTarget, isOver } = this.props
return connectDragSource(connectDropTarget(
<div style={{ opacity: isDragging ? 0.5 : 1 }} >
Just an example
</div>
))
}
}
MyComponent = DragSource('MyComponent', elementSource, (connect,
monitor) => ({
connectDragSource: connect.dragSource(),
isDragging: monitor.isDragging()
}))(MyComponent);
MyComponent = DropTarget('MyComponent', elementTarget, connect => ({
connectDropTarget: connect.dropTarget(),
}))(MyComponent);
export default MyComponent;
类MyComponent扩展组件{
渲染(){
const{connectDragSource,IsDraging,connectDropTarget,isOver}=this.props
返回connectDragSource(connectDropTarget(
只是一个例子
))
}
}
MyComponent=DragSource('MyComponent',elementSource,(connect,
监视器)=>({
connectDragSource:connect.dragSource(),
isDraging:monitor.isDraging()
}))(MyComponent);
MyComponent=DropTarget('MyComponent',elementTarget,connect=>({
connectDropTarget:connect.dropTarget(),
}))(MyComponent);
导出默认MyComponent;
这方面也有一个例子。但它使用发电机。这在React DND中是可能的。 它需要将可拖动元素同时导出为源和目标 您可以将组件定义为
class MyComponent extends Component {
render () {
const { connectDragSource, isDragging, connectDropTarget, isOver } = this.props
return connectDragSource(connectDropTarget(
<div style={{ opacity: isDragging ? 0.5 : 1 }} >
Just an example
</div>
))
}
}
MyComponent = DragSource('MyComponent', elementSource, (connect,
monitor) => ({
connectDragSource: connect.dragSource(),
isDragging: monitor.isDragging()
}))(MyComponent);
MyComponent = DropTarget('MyComponent', elementTarget, connect => ({
connectDropTarget: connect.dropTarget(),
}))(MyComponent);
export default MyComponent;
类MyComponent扩展组件{
渲染(){
const{connectDragSource,IsDraging,connectDropTarget,isOver}=this.props
返回connectDragSource(connectDropTarget(
只是一个例子
))
}
}
MyComponent=DragSource('MyComponent',elementSource,(connect,
监视器)=>({
connectDragSource:connect.dragSource(),
isDraging:monitor.isDraging()
}))(MyComponent);
MyComponent=DropTarget('MyComponent',elementTarget,connect=>({
connectDropTarget:connect.dropTarget(),
}))(MyComponent);
导出默认MyComponent;
这方面也有一个例子。不过它使用发电机