import { Component, OnInit } from '@angular/core'; @Component({ selector: 'app-user-tournaments-container', templateUrl: './user-tournaments-container.component.html', styleUrls: ['./user-tournaments-container.component.css'] }) export class UserTournamentsContainerComponent implements OnInit { private _currently_expanded: string = "attending"; constructor() { } ngOnInit() { } ToggleClass(zone: string) { if (this.Toggled(zone)) { return 'btn-success'; } return 'btn-outline-dark'; } Toggled(zone: string) { return this._currently_expanded == zone; } Toggle(zone: string) { if (this._currently_expanded == zone) { this._currently_expanded = null; } else { this._currently_expanded = zone; } } }