Question

有人能举例说明如何将组件动态加载到Material MatDialog中吗？

我想要做的是：我将为MatDialog配置数据提供一个组件类型，然后该对话框将创建一个实例并放置在它的mat-dialog-content区域内。

看来我需要使用ng-template和viewContainerRef的某种组合，但我不知道如何实例化提供的组件Type并插入到所需的区域。

一个简单的例子：

    <h2 mat-dialog-title>MyTitle</h2>
    <mat-dialog-content>
     <---- dynamically loaded component would be inserted here ---->
    </mat-dialog-content>

    <mat-dialog-actions>
      <button mat-button mat-dialog-close>Cancel</button>
      <button mat-button [mat-dialog-close]="true">Save</button>
    </mat-dialog-actions>

Answer 1

有不同的选择：

1）内置结构指令 ngComponentOutlet

<ng-container *ngComponentOutlet="data.component"></ng-container>

<强> Example

2）使用角度素材cdk。更确切地说，您可以使用辅助入口点PortalModule

中的@angular/cdk/portal

<强> dialog.component.ts

import { ComponentPortal } from '@angular/cdk/portal';

@Component({...})
export class DialogDialog {

  portal: ComponentPortal<any>;

  constructor(...
    @Inject(MAT_DIALOG_DATA) public data: any) { }

  ngOnInit() {
    this.portal = new ComponentPortal(this.data.component);
  }

<强> dialog.component.html

<ng-template [cdkPortalOutlet]="portal"></ng-template>

<强> Example

3）使用Angular低级API

<强> dialog.component.ts

@Component({...})
export class DialogDialog {

  @ViewChild('target', { read: ViewContainerRef }) vcRef: ViewContainerRef;

  componentRef: ComponentRef<any>;

  constructor(
    ...
    private resolver: ComponentFactoryResolver,
    @Inject(MAT_DIALOG_DATA) public data: any) { }

  ngOnInit() {
    const factory = this.resolver.resolveComponentFactory(this.data.component);
    this.componentRef = this.vcRef.createComponent(factory);
  }


  ngOnDestroy() {
    if (this.componentRef) {
      this.componentRef.destroy();
    }
  }  
}

<强> dialog.component.html

<ng-template #target></ng-template

<强> Example

Answer 2

实际模态组件.ts：（请注意，模态组件html是您在上面编写代码的地方）

import {Component, Inject, OnInit} from '@angular/core';
import {MatDialog, MatDialogRef, MAT_DIALOG_DATA} from '@angular/material';


@Component({
    selector: 'app-modal',
    templateUrl: './modal.component.html',
    styleUrls: ['./modal.component.css']
})
export class ModalComponent implements OnInit {

    constructor(public dialogRef: MatDialogRef<CreateFirmComponent>,
                @Inject(MAT_DIALOG_DATA) public data: any)
                 {
    }

    ngOnInit() {
    }

    onConfirm() {
        this.dialogRef.close(true);
    }

    onCancel(): void {
        this.dialogRef.close(false);
    }

}

您调用模态的组件：

import {Component, OnInit} from '@angular/core';
import {MatDialog} from '@angular/material';
import {ModalComponent} from './modal-component';


@Component({
    selector: 'app-list',
    templateUrl: './list.component.html',
    styleUrls: ['./list.component.css']
})
export class ListComponent implements OnInit {


    constructor(public dialog: MatDialog) {
    }




    openDialog(): void {
        let dialogRef = this.dialog.open(ModalComponent, {
            width: '500px'
        });

        dialogRef.afterClosed().subscribe(result => {
            // result is what you get after you close the Modal
        });
    }

}

在Material MatDialog中动态加载组件

2 个答案: