//Til að kalla á leave room í chatService:
leaveRoom(roomName: string) {
  return new Observable(obs => {
    this.socket.emit('partroom', roomName);
  });
}

// Observable á updateusers kallið í chatservice
getUsersInRoom(): Observable<any> {
    return new Observable(obs => {
      this.socket.on('updateusers', (roomName, users, ops) => {
        const usrs: string[] = [];
        for (const name in users) {
          if (users.hasOwnProperty(name)) {
            usrs.push(name);
          }
        }
        const op: string[] = [];
        for (const name in ops) {
          if (ops.hasOwnProperty(name)) {
            op.push(name);
          }
        }
        const ret = {
          room: roomName,
          users: usrs,
          ops: op
        };
        obs.next(ret);
      });
    });
  }

  // onInit í user component: //Sér um að birta users in room
  ngOnInit() {
    this.chatService.getUsersInRoom().subscribe(obj => {
      if (obj.room === this.activeRoom) {
        this.users = obj.users;
        this.ops = obj.ops;
      }
    });
  }

  // html sem sér um að birta users og ops.
<h3>Current Room: {{activeRoom}}</h3>
<ul>
  <li class="op" *ngFor="let user of ops" >
    <p>{{user}}</p>
  </li>
  <li class="user" *ngFor="let user of users" >
    <p>{{user}}</p>
  </li>
</ul>