Checkbox多选框

多选框。

何时使用

• 在一组可选项中进行多项选择时；
• 单独使用可以表示两种状态之间的切换，和 switch 类似。区别在于切换 switch 会直接触发状态改变，而 checkbox 一般用于状态标记，需要和提交操作配合。

import { NzCheckboxModule } from 'ng-zorro-antd/checkbox';

代码演示

基本用法

简单的 checkbox。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-basic',
  template: `
    <label nz-checkbox [(ngModel)]="checked">Checkbox</label>
  `
})
export class NzDemoCheckboxBasicComponent {
  checked = true;
}

受控的 Checkbox

联动 checkbox。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-controller',
  template: `
    <p style="margin-bottom: 20px;">
      <label nz-checkbox [(ngModel)]="isCheckedButton" [nzDisabled]="isDisabledButton">
        {{ isCheckedButton ? 'Checked' : 'Unchecked' }} - {{ isDisabledButton ? 'Disabled' : 'Enabled' }}
      </label>
    </p>
    <p>
      <button nz-button [nzType]="'primary'" (click)="checkButton()" [nzSize]="'small'">
        {{ !isCheckedButton ? 'Checked' : 'Unchecked' }}
      </button>
      <button nz-button [nzType]="'primary'" (click)="disableButton()" [nzSize]="'small'">
        {{ isDisabledButton ? 'Enabled' : 'Disabled' }}
      </button>
    </p>
  `,
  styles: [
    `
      button {
        margin-right: 8px;
      }
    `
  ]
})
export class NzDemoCheckboxControllerComponent {
  isCheckedButton = true;
  isDisabledButton = false;
  checkButton(): void {
    this.isCheckedButton = !this.isCheckedButton;
  }
  disableButton(): void {
    this.isDisabledButton = !this.isDisabledButton;
  }
}

全选

在实现全选效果时，你可能会用到 nzIndeterminate 属性。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-check-all',
  template: `
    <div style="border-bottom: 1px solid rgb(233, 233, 233);">
      <label nz-checkbox [(ngModel)]="allChecked" (ngModelChange)="updateAllChecked()" [nzIndeterminate]="indeterminate">
        Check all
      </label>
    </div>
    <br />
    <nz-checkbox-group [(ngModel)]="checkOptionsOne" (ngModelChange)="updateSingleChecked()"></nz-checkbox-group>
  `
})
export class NzDemoCheckboxCheckAllComponent {
  allChecked = false;
  indeterminate = true;
  checkOptionsOne = [
    { label: 'Apple', value: 'Apple', checked: true },
    { label: 'Pear', value: 'Pear', checked: false },
    { label: 'Orange', value: 'Orange', checked: false }
  ];
  updateAllChecked(): void {
    this.indeterminate = false;
    if (this.allChecked) {
      this.checkOptionsOne = this.checkOptionsOne.map(item => {
        return {
          ...item,
          checked: true
        };
      });
    } else {
      this.checkOptionsOne = this.checkOptionsOne.map(item => {
        return {
          ...item,
          checked: false
        };
      });
    }
  }
  updateSingleChecked(): void {
    if (this.checkOptionsOne.every(item => !item.checked)) {
      this.allChecked = false;
      this.indeterminate = false;
    } else if (this.checkOptionsOne.every(item => item.checked)) {
      this.allChecked = true;
      this.indeterminate = false;
    } else {
      this.indeterminate = true;
    }
  }
}

不可用

checkbox 不可用。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-disabled',
  template: `
    <label nz-checkbox nzDisabled [ngModel]="false"></label>
    <br />
    <label nz-checkbox nzDisabled [ngModel]="true"></label>
  `
})
export class NzDemoCheckboxDisabledComponent {}

Checkbox 组

方便的从数组生成 Checkbox 组。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-group',
  template: `
    <nz-checkbox-group [(ngModel)]="checkOptionsOne" (ngModelChange)="log(checkOptionsOne)"></nz-checkbox-group>
    <br />
    <br />
    <nz-checkbox-group [(ngModel)]="checkOptionsTwo" (ngModelChange)="log(checkOptionsTwo)"></nz-checkbox-group>
    <br />
    <br />
    <nz-checkbox-group [(ngModel)]="checkOptionsThree" (ngModelChange)="log(checkOptionsThree)"></nz-checkbox-group>
  `
})
export class NzDemoCheckboxGroupComponent {
  checkOptionsOne = [
    { label: 'Apple', value: 'Apple', checked: true },
    { label: 'Pear', value: 'Pear' },
    { label: 'Orange', value: 'Orange' }
  ];
  checkOptionsTwo = [
    { label: 'Apple', value: 'Apple' },
    { label: 'Pear', value: 'Pear', checked: true },
    { label: 'Orange', value: 'Orange' }
  ];
  checkOptionsThree = [
    { label: 'Apple', value: 'Apple', disabled: true, checked: true },
    { label: 'Pear', value: 'Pear', disabled: true },
    { label: 'Orange', value: 'Orange' }
  ];
  log(value: object[]): void {
    console.log(value);
  }
}

布局

nz-checkbox-wrapper 内嵌 nz-checkbox 并与 Grid 组件一起使用，可以实现灵活的布局。

import { Component } from '@angular/core';
@Component({
  selector: 'nz-demo-checkbox-layout',
  template: `
    <nz-checkbox-wrapper style="width: 100%;" (nzOnChange)="log($event)">
      <div nz-row>
        <div nz-col nzSpan="8"><label nz-checkbox nzValue="A" [ngModel]="true">A</label></div>
        <div nz-col nzSpan="8"><label nz-checkbox nzValue="B">B</label></div>
        <div nz-col nzSpan="8"><label nz-checkbox nzValue="C">C</label></div>
        <div nz-col nzSpan="8"><label nz-checkbox nzValue="D">D</label></div>
        <div nz-col nzSpan="8"><label nz-checkbox nzValue="E">E</label></div>
      </div>
    </nz-checkbox-wrapper>
  `
})
export class NzDemoCheckboxLayoutComponent {
  log(value: string[]): void {
    console.log(value);
  }
}

API

[nz-checkbox]directive

nz-checkbox-groupcomponent

nz-checkbox-wrappercomponent

方法

[nz-checkbox]directive

通过ViewChild或其他方式获得 nz-checkbox 实例