angular+ng-zorro表格拖拽

angular集成了cdk drag-drop 来实现拖拽功能
app.modules.ts导入

import { DragDropModule } from '@angular/cdk/drag-drop';
imports: [
	DragDropModule
]

一、表格内拖拽排序

<nz-table [nzData]="sourceData" [nzFrontPagination]="false" [nzShowPagination]="false" [nzScroll]="{ y: '500px' }">
     <thead>
     <tr>
         <th>工序描述th>
         <th>标准工时(分钟)th>
         <th>工序级别th>
     tr>
     thead>
     <tbody cdkDropList
            (cdkDropListDropped)="drop($event)">
     <tr *ngFor="let data of sourceData" cdkDrag>
         <td>{{ data.desc }}td>
         <td>{{ data.sam }}td>
         <td>{{ data.grade }}td>
     tr>
     tbody>
 nz-table>

import {moveItemInArray, transferArrayItem, copyArrayItem, CdkDragDrop} from '@angular/cdk/drag-drop';
sourceData = [{
  'id': 1,
    'desc ': 'string',
    'sam': 1,
    'grade': 1,
    'price': 0
}, {
    'id': 2,
    'desc ': 'string',
    'sam': 2,
    'grade': 2,
    'price': 21
}, {
    'id': 3,
    'desc ': 'string',
    'sam': 3,
    'grade': 3,
    'price': 3
}];
	drop(event: CdkDragDrop<string[]>) {
        moveItemInArray(event.container.data, event.previousIndex, event.currentIndex);
    }

二、表间拖拽

1、表间相互拖拽无限制

<nz-table [nzData]="targetData" [nzFrontPagination]="false" [nzShowPagination]="false" [nzScroll]="{ y: '500px' }">
     <thead>
     <tr>
         <th nzWidth="60px">序号th>
         <th nzWidth="160px">工序描述th>
         <th nzWidth="110px">标准工时(分钟)th>
         <th nzWidth="110px">工序级别th>
         <th nzWidth="110px">标准工价(元)th>
         <th nzWidth="90px" *ngIf="editable">操作th>
     tr>
     thead>
     <tbody cdkDropList
            #todoList="cdkDropList"
            [cdkDropListData]="targetData"
            [cdkDropListConnectedTo]="[doneList]"
            (cdkDropListDropped)="drop($event)">
         <tr *ngFor="let data of targetData; index as i" cdkDrag>
             <td>{{ i+1 }}td>
             <td>{{ data.desc }}td>
             <td>{{ data.sam }}td>
             <td>{{ data.grade }}td>
             <td>{{ data.price }}td>
             <td *ngIf="editable">
                 <button nz-button nzType="link" (click.stop)="delete(i)">删除button>
             td>
         tr>
     tbody>
 nz-table>
 <nz-table [nzData]="sourceData" [nzFrontPagination]="false" [nzShowPagination]="false" [nzScroll]="{ y: '500px' }">
      <thead>
      <tr>
          <th>工序描述th>
          <th>标准工时(分钟)th>
          <th>工序级别th>
      tr>
      thead>
      <tbody cdkDropList
             #doneList="cdkDropList"
             [cdkDropListData]="sourceData"
             [cdkDropListConnectedTo]="[todoList]"
             (cdkDropListDropped)="drop($event)">
      <tr *ngFor="let data of sourceData" cdkDrag>
          <td>{{ data.desc }}td>
          <td>{{ data.sam }}td>
          <td>{{ data.grade }}td>
      tr>
      tbody>
  nz-table>

import {moveItemInArray, transferArrayItem, copyArrayItem, CdkDragDrop} from '@angular/cdk/drag-drop';
targetData = [{
    'id': null,
    'desc': null,
    'sam': null,
    'grade': null,
    'price': null
}];
sourceData = [{
  'id': 1,
    'desc ': 'string',
    'sam': 1,
    'grade': 1,
    'price': 0
}, {
    'id': 2,
    'desc ': 'string',
    'sam': 2,
    'grade': 2,
    'price': 21
}, {
    'id': 3,
    'desc ': 'string',
    'sam': 3,
    'grade': 3,
    'price': 3
}];
drop(event: CdkDragDrop<string[]>) {
        if (event.previousContainer === event.container) {
            moveItemInArray(event.container.data, event.previousIndex, event.currentIndex);
        } else {
        	// 表间数据转换，功能：将源表的数据拖拽到目标表中，并从源表中删除
            transferArrayItem(event.previousContainer.data, event.container.data, event.previousIndex, event.currentIndex);
            // 表间数据复制，功能：将源表的数据通过拖拽复制到目标表中，源表中不删除
            // copyArrayItem(event.previousContainer.data, event.container.data, event.previousIndex, event.currentIndex);
            /**
             * 针对目标表必须存在至少一条数据，解决方案一：初始一条空数据，有数据移入时，删除空数据
             */
            this.targetData.forEach((item) => {
                if (item.id === null) {
                    this.targetData.splice(this.targetData.indexOf(item), 1);
                }
            });
        }
    }
    // 删除
    delete(index) {
        /**
         * 针对目标表必须存在至少一条数据，解决方案一：当删除最后一条数据时，增加一条空数据
         */
        this.targetData.splice(index, 1);
        if (this.targetData.length === 0) {
            const data = {
                id: null,
                desc: null,
                sam: null,
                grade: null,
                price: null
            };
            this.targetData.splice(0, 0, data);
        }
    }

注意点：
目标表必须至少存在一条数据，若为空，则无法进行表间拖拽，其拖拽会被认为为表内拖拽

2、表间拖拽有限制，源表只出不进

<nz-table [nzData]="targetData" [nzFrontPagination]="false" [nzShowPagination]="false" [nzScroll]="{ y: '500px' }">
     <thead>
     <tr>
         <th nzWidth="60px">序号th>
         <th nzWidth="160px">工序描述th>
         <th nzWidth="110px">标准工时(分钟)th>
         <th nzWidth="110px">工序级别th>
         <th nzWidth="110px">标准工价(元)th>
         <th nzWidth="90px" *ngIf="editable">操作th>
     tr>
     thead>
     <tbody cdkDropList
            #todoList="cdkDropList"
            [cdkDropListData]="targetData"
            [cdkDropListConnectedTo]="[doneList]"
            (cdkDropListDropped)="drop($event)">
         <tr *ngFor="let data of targetData; index as i" cdkDrag>
             <td>{{ i+1 }}td>
             <td>{{ data.desc }}td>
             <td>{{ data.sam }}td>
             <td>{{ data.grade }}td>
             <td>{{ data.price }}td>
             <td *ngIf="editable">
                 <button nz-button nzType="link" (click.stop)="delete(i)">删除button>
             td>
         tr>
     tbody>
 nz-table>
 <nz-table [nzData]="sourceData" [nzFrontPagination]="false" [nzShowPagination]="false" [nzScroll]="{ y: '500px' }">
      <thead>
      <tr>
          <th>工序描述th>
          <th>标准工时(分钟)th>
          <th>工序级别th>
      tr>
      thead>
      <tbody cdkDropList
             #doneList="cdkDropList"
             [cdkDropListData]="sourceData"
             [cdkDropListEnterPredicate]="noReturnPredicate"
             [cdkDropListConnectedTo]="[todoList]"
             (cdkDropListDropped)="drop($event)">
      <tr *ngFor="let data of sourceData" cdkDrag>
          <td>{{ data.desc }}td>
          <td>{{ data.sam }}td>
          <td>{{ data.grade }}td>
      tr>
      tbody>
  nz-table>

import {moveItemInArray, transferArrayItem, copyArrayItem, CdkDragDrop} from '@angular/cdk/drag-drop';
targetData = [{
    'id': null,
    'desc': null,
    'sam': null,
    'grade': null,
    'price': null
}];
sourceData = [{
  'id': 1,
    'desc ': 'string',
    'sam': 1,
    'grade': 1,
    'price': 0
}, {
    'id': 2,
    'desc ': 'string',
    'sam': 2,
    'grade': 2,
    'price': 21
}, {
    'id': 3,
    'desc ': 'string',
    'sam': 3,
    'grade': 3,
    'price': 3
}];
drop(event: CdkDragDrop<string[]>) {
        if (event.previousContainer === event.container) {
            moveItemInArray(event.container.data, event.previousIndex, event.currentIndex);
        } else {
        	// 表间数据转换，功能：将源表的数据拖拽到目标表中，并从源表中删除
            transferArrayItem(event.previousContainer.data, event.container.data, event.previousIndex, event.currentIndex);
            // 表间数据复制，功能：将源表的数据通过拖拽复制到目标表中，源表中不删除
            // copyArrayItem(event.previousContainer.data, event.container.data, event.previousIndex, event.currentIndex);
            /**
             * 针对目标表必须存在至少一条数据，解决方案一：初始一条空数据，有数据移入时，删除空数据
             */
            this.targetData.forEach((item) => {
                if (item.id === null) {
                    this.targetData.splice(this.targetData.indexOf(item), 1);
                }
            });
        }
    }
    // 删除
    delete(index) {
        /**
         * 针对目标表必须存在至少一条数据，解决方案一：当删除最后一条数据时，增加一条空数据
         */
        this.targetData.splice(index, 1);
        if (this.targetData.length === 0) {
            const data = {
                id: null,
                desc: null,
                sam: null,
                grade: null,
                price: null
            };
            this.targetData.splice(0, 0, data);
        }
    }
    // 不让其他list里面的数据移入到这个里面来
    noReturnPredicate() {
        return false;
    }

注：通过cdkDropListEnterPredicate来设置进入限制

详情请见官网：https://material.angular.io/cdk/drag-drop/examples