ng-zorro-antd 标签组件tag 实现回车连续新增

1

zorro tag 实现编辑状态、连续新增

  • 先看实现效果

图片描述

  • 官网给的示例只有新增、删除,并且不可连续新增。自己制作实现这两个状态。
  • 下面直接贴代码了
  • 模板中代码:

    <span 
      *ngFor="let tag of tags;let i=index;">
      <nz-tag  *ngIf="tag.visible"
        [nzMode]="i === -1 ? 'default' : 'closeable'"
        (nzAfterClose)="handleClose(tag)"
        (click)="showInputInArray(tag)"
        (nzOnClose)="onCloseTagInArray()">
          <span style="font-size:1.2em;">{{ sliceTagName(tag.text) }}</span>
      </nz-tag>
      <input #inputElementInArray
        *ngIf="!tag.visible"
        type="text" nz-input nzSize='small' style="width:78px;"
        [(ngModel)]="tag.text"
        (blur)="handleInputConfirmInArray(tag)"
        (keydown.enter)="handleInputConfirmInArray(tag)">
    </span>
    
    
    <nz-tag
      *ngIf="!inputVisible"
      class="editable-tag"
      (click)="showInput()">
      <i nz-icon type="plus"></i>
      <span style="font-size:1.2em;">点我新增</span>
    </nz-tag>
    
    <input
      #inputElement
      nz-input
      nzSize="small"
      *ngIf="inputVisible" type="text"
      [(ngModel)]="inputValue"
      style="width: 78px;"
      (blur)="handleInputConfirm()"
      (keydown.enter)="handleInputConfirm()">
  • CSS代码

    .editable-tag ::ng-deep .ant-tag {
        background: rgb(255, 255, 255);
        border-style: dashed;
    }
    
  • ts代码

    import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
    import { NzMessageService } from 'ng-zorro-antd';
    
    @Component({
      selector: 'app-tag-edit',
      templateUrl: './tag-edit.component.html',
      styleUrls: ['./tag-edit.component.css']
    })
    export class TagEditComponent implements OnInit {
    
      private tag01:CcTag = new CcTag();
      private tag02:CcTag = new CcTag();
      private tag03:CcTag = new CcTag();
      private tags:CcTag[] = [];
      private skipClick:boolean = false;
      private newOngoing:boolean = true;
      
      inputVisible = false;
      inputValue = '';
      @ViewChild('inputElement') inputElement: ElementRef;
      @ViewChild('inputElementInArray') inputElementInArray: ElementRef;
      
    
      //#region 系统生命周期钩子
      constructor(
        private msg:NzMessageService
      ) { }
    
      ngOnInit() {
        this.initTags();
      }
      //#endregion
    
      //#region 初始化数据
      initTags(){
        this.tag01.text='单袋';
        this.tag01.value='单袋';
        this.tag01.visible=true;
    
        this.tag02.text='双袋';
        this.tag02.value='双袋';
        this.tag02.visible=true;
    
        this.tag03.text='编织袋';
        this.tag03.value='编织袋';
        this.tag03.visible=true;
    
        this.tags.push(this.tag01);
        this.tags.push(this.tag02);
        this.tags.push(this.tag03);
      }
      //#endregion
    
      handleClose(removedTag: {}): void {
        this.tags = this.tags.filter(tag => tag !== removedTag);
      }
    
      sliceTagName(tag: string): string {
        const isLongTag = tag.length > 20;
        return isLongTag ? `${tag.slice(0, 20)}...` : tag;
      }
    
      showInput(): void {
        this.inputVisible = true;
        setTimeout(() => {
          this.inputElement.nativeElement.focus();
        }, 10);
      }
    
      // 数组反应到UI上的input
      showInputInArray(tag:CcTag){
        if(this.skipClick){
          this.skipClick = false;
          return;
        }
    
        tag.visible=false;
        setTimeout(() => {
          this.inputElementInArray.nativeElement.focus();
        }, 10);
      }
    
      handleInputConfirmInArray(tag:CcTag){
        tag.visible=true;
      }
    
      handleInputConfirm(): void {
        var target:CcTag = new CcTag();
        target.text=this.inputValue;
        target.value=this.inputValue;
        target.visible=true;
    
        if (this.inputValue && this.tags.indexOf(target) === -1) {
          this.tags.push(target);
          this.inputValue='';
          this.showInput();
        }else{
          this.inputValue = '';
          this.inputVisible = false;
        }
    
      }
    
      onCloseTagInArray(){
        this.skipClick = true;
      }
    }
    
    
    export class CcTag{
      public text:string;
      public value:string;
      public visible:boolean;  
    }
    

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