Quintiq file version 2.0
#parent: #root
Method SubscriptionPeriodOK () as Boolean id:Method_LibCal_dlgSubscription_SubscriptionPeriodOK
{
  #keys: '[131094.1.42291026]'
  Body:
  [*
    startOfSubscription := dsStartOfPeriod.Date();
    endOfSubscription   := dsEndOfPeriod  .Date();
    isWithoutEnd        := not ckbEndOfPeriod.Checked();
    
    ok := true;
    
    if( dhParticipationsToSubscribeTo.Data().Size() > 1 )
    {
      // Validate if the subscription period is valid for all events.
      traverse( dhParticipationsToSubscribeTo.Data(), Elements, participation )
      {
        ok := participation.Event().CanSubscribe( startOfSubscription, endOfSubscription, isWithoutEnd )
          and ok;
      }
    }
    else
    {
      participation := this.GetParticipation();
      ok := participation.Event().CanSubscribe( startOfSubscription, endOfSubscription, isWithoutEnd );
    }
    
    return ok;
  *]
}