我有一个组件 A,通常应该在没有关闭按钮的情况下显示。但是,当我在对话框中打开组件 A 时,我想添加一个关闭按钮来关闭对话框。
如何在 Angular 中实现此行为?有没有一种优雅的方法来确定组件是否在对话框中打开,以便我可以相应地添加关闭按钮?
预先感谢您的协助!
这是我的代码: https://stackblitz.com/edit/stackblitz-starters-p4pfnr?file=src%2Fapp%2Fb%2Fb.component.ts
是的,我们可以使用
data
方法第二个参数的 open
属性。我们将属性 fromPopup
设置为 true,然后在我们的组件上读取它!
b ts
import { Component } from '@angular/core';
import { MatDialog } from '@angular/material/dialog';
import { AComponent } from '../a/a.component';
@Component({
selector: 'app-b',
standalone: true,
imports: [AComponent],
templateUrl: './b.component.html',
styleUrl: './b.component.css',
})
export class BComponent {
constructor(public dialog: MatDialog) {}
public openDialog() {
this.dialog
.open(AComponent, {
data: { fromPopup: true },
})
.afterClosed()
.subscribe((res) => {
console.log(res);
});
}
}
b html
<button (click)="openDialog()" mat-raised-button color="primary" type="button">
Open Dialog
</button>
<app-a />
一个ts
import { Component, Inject, Optional } from '@angular/core';
import { MatInputModule } from '@angular/material/input';
import { MatButtonModule } from '@angular/material/button';
import { FormControl, FormGroup } from '@angular/forms';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MAT_DIALOG_DATA, MatDialogModule } from '@angular/material/dialog';
import { CommonModule } from '@angular/common';
@Component({
selector: 'app-a',
standalone: true,
imports: [
FormsModule,
ReactiveFormsModule,
MatFormFieldModule,
MatInputModule,
MatButtonModule,
CommonModule,
MatDialogModule,
],
templateUrl: './a.component.html',
styleUrl: './a.component.css',
})
export class AComponent {
form!: FormGroup;
fromPopup = false;
constructor(
@Optional() @Inject(MAT_DIALOG_DATA) public data: { fromPopup: boolean }
) {
this.fromPopup = !!data?.fromPopup;
this.form = new FormGroup({
email: new FormControl(''),
});
}
}
一个html
<form [formGroup]="form" class="">
<h1>App A</h1>
<mat-form-field>
<mat-label>Email</mat-label>
<input
matInput
type="email"
formControlName="email"
placeholder="Ex. [email protected] "
/>
</mat-form-field>
<button mat-button type="button" color="primary">Save</button>
</form>
<button *ngIf="fromPopup" mat-button [mat-dialog-close]="true">
shows only for popup!
</button>