/*!
* \brief Remove the selected ticket (if any) from the lottery.
*
* If no ticket is selected, the function does nothing besides showing an error message.
* If removing the selected ticket leaves the list empty, the add-comment button
* and delete-ticket button are disabled.
*/
private void BtnRemoveTicket_Click(object sender, RoutedEventArgs e)
{
if (!HasTicketSelected())
{
return;
}
var ticket = (Ticket)LwTickets.SelectedItem;
if (WndDialogMessage.Show(this, "Do you want to delete this ticket?\n\nLottery number: " + ticket.LotteryNumber, "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning) != MessageBoxResult.Yes)
{
return;
}
CurrentLottery.RemoveTicket(ticket);
LwTickets.Items.Remove(ticket);
var oldPrice = int.Parse(TxtPrize.Text);
TxtPrize.Text = "" + (oldPrice - ticket.Price);
if (LwTickets.Items.Count < 1)
{
BtnAddComment.IsEnabled = false;
BtnRemoveTicket.IsEnabled = false;
}
}
//! Discards the tickets on the window closing if member DiscardTicketsOnClose is true.
private void NewTicketsWindow_OnClosing(object sender, CancelEventArgs e)
{
if (DiscardTicketsOnClose)
{
foreach (Ticket ticket in LwTickets.Items)
{
CurrentLottery.RemoveTicket(ticket);
}
}
if (Owner != null)
{
Owner.IsEnabled = true;
}
}
//! Attempt to add a new ticket, either with a random or specific lottery number.
private void BtnAddTicket_Click(object sender, RoutedEventArgs e)
{
int actualLotteryNumber;
if (BuyRandomLotteryNumber)
{
actualLotteryNumber = CurrentLottery.BuyLotteryNumber(TxtOwner.Text);
// Makes sure that there was a ticket left to buy.
if (actualLotteryNumber == Lottery.InvalidLotteryNumber)
{
WndDialogMessage.Show(this, "No more tickets available.", "No tickets left", MessageBoxButton.OK,
MessageBoxImage.Information);
return;
}
}
else
{
if (string.IsNullOrEmpty(TxtSpecificLotteryNumber.Text))
{
WndDialogMessage.Show(this, "No lottery number given.\nIf you want a random one, check the random box.",
"Missing Number", MessageBoxButton.OK, MessageBoxImage.Information);
return;
}
var userLotteryNumber = int.Parse(TxtSpecificLotteryNumber.Text);
var result = CurrentLottery.BuyLotteryNumber(userLotteryNumber, TxtOwner.Text);
switch (result)
{
case LotteryNumberSaleResult.Success:
actualLotteryNumber = userLotteryNumber;
break;
case LotteryNumberSaleResult.NumberAlreadySold:
WndDialogMessage.Show(this, "The number has already been sold.", "Number Unavailable",
MessageBoxButton.OK, MessageBoxImage.Information);
return;
case LotteryNumberSaleResult.NumberOutOfRange:
var msg = "The number is not in the alllowed range: " + Lottery.LotteryNumberMin + " - " +
CurrentLottery.LotteryNumberMax + ".";
WndDialogMessage.Show(this, msg, "Invalid Number", MessageBoxButton.OK, MessageBoxImage.Information);
return;
default:
WndDialogMessage.Show(this, "An unspecified error occured.", "Unspecified Error", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
}
// Add to list and update the tottal price.
var ticket = CurrentLottery.Tickets.Find(T => T.LotteryNumber == actualLotteryNumber);
LwTickets.Items.Add(ticket);
LwTickets.ScrollIntoView(ticket);
var oldPrice = int.Parse(TxtPrize.Text);
TxtPrize.Text = "" + (oldPrice + ticket.Price);
// Enabled the buttons for the list of tickets.
BtnAddComment.IsEnabled = true;
BtnRemoveTicket.IsEnabled = true;
}
