在Material MatDialog中动态加载组件

Question

任何人都可以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> 

例

2)使用角度材料cdk.更确切地说,您可以PortalModule从二级入口点使用@angular/cdk/portal

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);
  }

dialog.component.html

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

例

3)使用Angular低级API

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();
    }
  }  
}

dialog.component.html

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

例