How to pass a child component to parent components?

Question

I want to show a popup with bucket-modal.component.tswhen the user hovers / mouse over list.component.ts. How to establish a connection between list.component.tsand bucket-modal.component.ts? My code is here.

list.component.ts

@Component({    
    selector: 'list',
    templateUrl: 'list.component.html',
    styleUrls: ['list.component.css'],
})

export class ListComponent implements OnInit {
 @Input() state: boolean;
    @Output() toggle = new EventEmitter();
    onHover() {
    this.state = true;
    this.toggle.emit(this.state);
    console.log("state is ----------" + this.state);
    }
    onHoverOut() {
    this.state = false;
    this.toggle.emit(this.state);
    console.log("state is------ " + this.state);
    }
}

list.component.html

<a (mouseover)="onHover()" (mouseleave)="onHoverOut()">random Link list</a>

listdetails.component.ts

@Component({

    selector: 'app-list-detail',
    templateUrl: 'app-list.component.html',
    styleUrls: ['app-list.component.css'],
})


export class ListDetailComponent implements OnInit {


}

listdetails.component.html

<list [elementslist]="listdetails" listingtype="3"></list>
<list [elementslist]="listdetails" listingtype="3"></list>
<list [elementslist]="listdetails" listingtype="3"></list>
<bucket-modal [(showMeaddBucket)]="show2ClickedBucket" [state]="PopUpshow" (toggle)="PopUpshow=$event"></bucket-modal>

Bucket-modal.component.ts

@Component({    
    selector: 'bucket-modal',
    templateUrl: 'bucket-modal.component.html',
    styleUrls: ['bucket-modal.component.css'],
})



export class BucketModalComponent implements OnInit {

      @Input() state: boolean;
      @Output() toggle = new EventEmitter();
    onHover() {
        this.state = true;
        this.toggle.emit(this.state);
        console.log("state is " + this.state);
    }
    onHoverOut() {
        this.state = false;
        this.toggle.emit(this.state);
        console.log("state is " + this.state);
    }
}

Answer 1

I think the easiest way is to create a public method in BucketModalComponentthat will show a popup dialog. Sort of

export class BucketModalComponent implements OnInit {
  showDialog(): void {
    // Open the popup dialog
  }
}

Then you can call it in listdetails.component.html:

<list ... (toggle)="modal.showDialog()"></list>
<bucket-modal #modal ... ></bucket-modal>

Answer 2

Let's consider that I have such components,

// Components
-parent 1
    - child 11
-parent 2
    - child 21
-parent 3
    - chils 31

// NgModule
- NgModule
    -> that has all these components
    -> Provider : CommonService

Now I want to transfer data from child 11 to all parents (1,2,3)

, , , CommonService , , , .

eventEmitter CommonService FireItFrom child11 eventEmitter .