What is the best way to establish a connection between a child and parent component using a click event?

I am working on a scenario where I have two components interacting with each other. The parent component features a button, and upon clicking this button, the child component is disabled while also opening up to display its own button for closing. How can I effectively close the child component and re-enable the button in the parent component?

Here is an overview of my code:

// Parent Component
<app-child (currentChild)="setCurrentChild($event)" *ngIf="showChild"></app-child>
 <button type="button" (click)="openChild()" [disabled]="isDisabled">Child</button>

public showChild = false;
public isDisabled = false;

openChild() {
this.showChild = true;
this.isDisabled = true;
}
// Child Component
<button class="btn-close" mat-button (click)="closeChild()">close</button>

 @Output() public currentChild: EventEmitter<any> = new EventEmitter<any>();

closeChild() {
this.showChild = false;
this.isDisabled = false;
}

Answer №1

I have updated some variable names to make the code more readable.

Ensure to add this function to your parent component as well:

closeChild() {
this.hideChild = true;
this.isUnlocked = true;
}

Next, make changes to your child element:

<app-child (onCloseChild)="closeChild()" *ngIf="hideChild"></app-child>

Update your child files with the following:

<button class="btn-close" mat-button (click)="triggerCloseEvent()">close</button>
@Output() public onCloseChild: EventEmitter<any> = new EventEmitter<any>();

triggerCloseEvent() {
  this.onCloseChild.emit(true);
}

This will trigger an event through the emitter, which the parent component will be listening for. Once received by the parent, it will execute the closeChild() function.

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