我要评论写在前边，二维数组可以拖拽，但是不可以编辑+拖拽，如果想要实现编辑+拖拽，还是需要转换成一维数组。原因是因为插件的官方规定，在拖拽过程中不可以编辑droppable层的props。
相关地址：
中文文档地址
react-beautiful-dnd - 《react-beautiful-dnd 中文文档帮助手册教程》 - 极客文档 (geekdaxue.co)
git源码
github - chinanf-boy/react-beautiful-dnd-zh: 🇨🇳翻译: react-beautiful-dnd 文档 ❤️ 更新 ✅
使用
安装
# yarn yarn add react-beautiful-dnd # npm npm install react-beautiful-dnd --save
引入
import { dragdropcontext, droppable, draggable } from 'react-beautiful-dnd';引用
<draggablelist data={listdemo}></draggablelist>一维数组使用
传参data是一维数组
import react, { useeffect, usestate } from 'react';
import { dragdropcontext, draggable, droppable } from 'react-beautiful-dnd';
interface props {
data: any[];
}
const draggablelist: react.fc<props> = ({ data }) => {
const [sortlist, setsortlist] = usestate([]);
const getitems = () => {
const arr = array.from({ length: 10 }, (v, k) => k).map((k) => ({
id: `item-${k}`,
content: `item ${k}`,
}));
setsortlist(arr);
};
useeffect(() => {
getitems();
}, []);
const grid = 8;
const getitemstyle = (isdragging, draggablestyle) => ({
// some basic styles to make the items look a bit nicer
userselect: 'none',
padding: grid * 2,
margin: `0 ${grid}px 0 0`,
// change background colour if dragging
background: isdragging ? 'lightgreen' : 'grey',
// styles we need to apply on draggables
...draggablestyle,
});
const getliststyle = (isdraggingover: any) => ({
background: isdraggingover ? 'lightblue' : 'lightgrey',
display: 'flex',
padding: grid,
overflow: 'auto',
});
const ondragend = (result) => {
if (!result.destination) {
return;
}
console.log('end', sortlist, result);
const res = sortlist.filter((item) => item); // 更改引用地址
console.log('移动前res', res);
const [removed] = res.splice(result.source.index, 1);
console.log('删除？？？', removed);
res.splice(result.destination.index, 0, removed);
console.log('添加后', res);
setsortlist(res);
};
console.log('data', data);
/**
* draggable组件可以拖动并拖放到其droppables上. 一个draggable必须始终包含在一个droppable.
* 它是 可能重新排序draggable在其droppable家中或移动到另一个droppable.
* 一个draggable必须包含在一个droppable.
* */
return (
<dragdropcontext ondragend={ondragend}>
<droppable droppableid="droppable" direction="horizontal">
{(provided, snapshot) => (
<div ref={provided.innerref} style={getliststyle(snapshot.isdraggingover)} {...provided.droppableprops}>
{sortlist.map((item, index) => (
<draggable key={item.id} draggableid={item.id} index={index}>
{(provided, snapshot) => (
<div
ref={provided.innerref}
{...provided.draggableprops}
{...provided.draghandleprops}
style={getitemstyle(snapshot.isdragging, provided.draggableprops.style)}
>
{item.content}
</div>
)}
</draggable>
))}
{provided.placeholder}
</div>
)}
</droppable>
</dragdropcontext>
);
};
export default draggablelist;
二维数组的使用
import react, { useeffect, usestate } from 'react';
import { dragdropcontext, draggable, droppable } from 'react-beautiful-dnd';
interface props {
data: any[];
}
const draggablelist: react.fc<props> = ({ data = [] }) => {
const [sortlist, setsortlist] = usestate(data);
const grid = 8;
const getitemstyle = (isdragging, draggablestyle) => ({
// some basic styles to make the items look a bit nicer
userselect: 'none',
padding: grid * 2,
margin: `0 ${grid}px 0 0`,
// change background colour if dragging
background: isdragging ? 'lightgreen' : 'grey',
// styles we need to apply on draggables
...draggablestyle,
});
const getliststyle = (isdraggingover) => ({
background: isdraggingover ? 'lightblue' : 'lightgrey',
display: 'flex',
padding: grid,
overflow: 'auto',
});
const ondragend = (result) => {
if (!result.destination) {
return;
}
console.log('end', sortlist, result);
const res = sortlist.filter((item) => item); //修改引用地址
console.log('res', res);
const [removed] = res.splice(result.source.index, 1);
console.log('删除？？？', removed);
res.splice(result.destination.index, 0, removed);
console.log('添加后', res);
setsortlist(res);
};
useeffect(() => {
setsortlist(data);
}, [data]);
console.log('data', data);
return (
<dragdropcontext ondragend={ondragend}>
{sortlist.map((item, index) => {
return (
<droppable droppableid={'droppable' + index} key={index} direction="vertical">
{(provided, snapshot) => (
<div ref={provided.innerref} style={getliststyle(snapshot.isdraggingover)} {...provided.droppableprops}>
{/*{data.map((item, index) => (*/}
<draggable key={item[0].value} draggableid={item[0].value} index={index}>
{(provided, snapshot) => (
<div
ref={provided.innerref}
{...provided.draggableprops}
{...provided.draghandleprops}
style={getitemstyle(snapshot.isdragging, provided.draggableprops.style)}
>
{66666 + item[0].label}
</div>
)}
</draggable>
{/*))}*/}
{provided.placeholder}
</div>
)}
</droppable>
);
})}
</dragdropcontext>
);
};
export default draggablelist;组件传值的数组内容
const [options, setoptions] = usestate([
{
label: '延时时间',
value: 'delaytime',
children: [
{
label: '时',
value: 'hour',
disabled: false,
},
{
label: '分',
value: 'minute',
disabled: false,
},
{
label: '秒',
value: 'second',
disabled: false,
},
],
},
{
label: '限制类型',
value: 'limittype',
children: [
{
label: '前置点位1',
value: '1',
disabled: false,
},
{
label: '前置点位2',
value: '2',
disabled: false,
},
{
label: '前置点位3',
value: '3',
disabled: false,
},
],
},
{
label: '温度',
value: 'templete',
},
]);
案列
案例是通过级联的组件选择条件，新增条件时，前端重新定义数据格式，将二维的结构改成一维数组的结构。遍历填充内容时，是在droppable的下一级，所以可以修改内容。
const ondispatchvalue = (res: any) => {
dispatch({
type: `${model_name}/save`,
payload: {
protypelist: res,
},
});
};
// 新增、删除前置条件
const [inputflag, setinputflag] = usestate(false);
const [listdemo, setlistdemo] = usestate([]);
const changecondition = (ids, option) => {
let arr2 = [];
// 第三层关系选中两个时的判断
if (ids && ids.length > 1) {
// 二维数组结构成一维数组，方便去重
arr2 = ids.reduce((a, b) => {
return a.concat(b);
});
const arr3 = array.from(new set(arr2));
if (arr2.length !== arr3.length) {
setrepeatflag(true);
return message.warning('前置条件重复，请删除！');
} else {
setrepeatflag(false);
}
}
// 没有子级或者全选的判断
ids.map((item, index) => {
if (item.length === 1 && option[index][0].value === item[0] && option[index][0]?.children?.length > 0) {
setrepeatflag(true);
return message.warning('前置条件重复，请删除！');
} else {
setrepeatflag(false);
}
});
const arr = option.map((item) => {
let obj = {
typename: '', // 类型名称
typevalue: '', // 类型id
unitname: '', // 单位名称
unitvalue: '', // 单位id
value: '', // 值
};
item.map((i, index) => {
if (item.length === 1) {
obj.typename = i.label;
obj.typevalue = i.value;
}
if (item.length === 2) {
if (index === 1) {
obj.unitname = i.label;
obj.unitvalue = i.value;
} else {
obj.typename = i.label;
obj.typevalue = i.value;
}
}
});
return obj;
});
setlistdemo(arr);
// 保存定义好的数据，用于组件之间传值
ondispatchvalue(arr);
};// 父组件引用
<draggablelist data={protypelist}></draggablelist>// 子组件
import { connectstate } from '@/typing/connect';
import { connect } from '@@/exports';
import { input } from 'antd';
import react, { useeffect, usestate } from 'react';
import { dragdropcontext, draggable, droppable } from 'react-beautiful-dnd';
import { dispatch } from 'umi';
interface props {
data: any[];
dispatch: dispatch;
}
const model_name = 'mainconfig';
const draggablelist: react.fc<props> = ({ data = [], dispatch }) => {
const [sortlist, setsortlist] = usestate(data);
// 拖拽时的样式
const getliststyle = () => ({
overflow: 'auto',
width: '100%',
});
// 拖拽后的样式
const getitemstyle = (isdragging, draggablestyle) => ({
// some basic styles to make the items look a bit nicer
width: '100%',
userselect: 'none',
...draggablestyle,
});
const ondragend = (result) => {
if (!result.destination) {
return;
}
const res = sortlist.filter((item) => item); //修改引用地址
const [removed] = res.splice(result.source.index, 1);
res.splice(result.destination.index, 0, removed);
// console.log('添加后', res);
setsortlist(res);
dispatch({
type: `${model_name}/save`,
payload: {
protypelist: res,
},
});
console.log('拖拽后', res);
};
// 校验输入框内容
const reginputvalue = (e: any, index: number) => {
// 输入框聚焦时
const arr = data.filter((item) => item);
arr[index].value = e.target.value;
console.log('arr', arr);
setsortlist(arr);
dispatch({
type: `${model_name}/save`,
payload: {
protypelist: arr,
},
});
};
useeffect(() => {
setsortlist(data);
}, [data]);
// console.log('弹窗起落data', data);
/**
* draggable组件可以拖动并拖放到其droppables上. 一个draggable必须始终包含在一个droppable.
* 它是 可能重新排序draggable在其droppable家中或移动到另一个droppable.
* 一个draggable必须包含在一个droppable.
* */
return (
<dragdropcontext ondragend={ondragend}>
<droppable droppableid="droppable" direction="horizontal">
{(provided, snapshot) => (
<div ref={provided.innerref} style={getliststyle(snapshot.isdraggingover)} {...provided.droppableprops}>
{data.map((item, index) => (
<draggable key={item.typevalue} draggableid={item.typevalue} index={index}>
{(provided, snapshot) => (
<div
ref={provided.innerref}
{...provided.draggableprops}
{...provided.draghandleprops}
style={getitemstyle(snapshot.isdragging, provided.draggableprops.style)}
>
<div style={{ width: '100%', display: 'flex', justifycontent: 'flex-start', textalign: 'center' }}>
<div style={{ width: '33%', backgroundcolor: '#f2f2f2', padding: '8px 0' }}>条件名称</div>
<div style={{ width: '33%', backgroundcolor: '#f2f2f2', padding: '8px 0' }}>条件值</div>
<div style={{ width: '33%', backgroundcolor: '#f2f2f2', padding: '8px 0' }}>单位名称</div>
</div>
<div
style={{
width: '100%',
display: 'flex',
justifycontent: 'flex-start',
padding: '6px',
textalign: 'center',
marginbottom: 16,
}}
>
<div style={{ width: '33%', padding: '8px 0' }}>{item.typename}</div>
<div style={{ width: '33%', padding: '8px 0' }}>
<input
placeholder="请输入内容"
onchange={(e) => {
reginputvalue(e, index);
}}
/>
</div>
<div style={{ width: '33%', padding: '8px 0' }}>{item.unitname}</div>
</div>
</div>
)}
</draggable>
))}
{provided.placeholder}
</div>
)}
</droppable>
</dragdropcontext>
);
};
export default connect(({ mainconfig }: connectstate) => ({
mainconfig ,
}))(draggablelist);
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