/// <summary>
/// A method that loops and processes keystrokes until the form is complete,
/// either by <see cref="FormComplete">FormComplete</see> or
/// <see cref="FormCancelled">FormCancelled</see> events.
/// </summary>
private void LoopForKeypress()
{
// Loop for keypresses. Since we're doing all the work of processing, we have
// to trap special keypresses and respond appropriately
while (true)
{
// Blocks on the next function call.
ConsoleKeyInfo cki = Console.ReadKey(true);
ConsoleKey nKey = cki.Key;
// A key's been pressed. Figure out what to do.
// All actions will be against the current field, stored in _field.
char cChar = cki.KeyChar;
if (cChar != 0)
{
// Guard against unprintable chars.
KeyPressEventArgs kpea = new KeyPressEventArgs(_field, cChar);
if (_keyPressEvent != null)
_keyPressEvent(this, kpea);
if (!kpea.Cancel)
{
// Process the keystroke. It wasn't cancelled.
switch (nKey)
{
case ConsoleKey.Backspace: // Backspace pressed
// Is there a character to backspace over?
if (_field.Text.Length > 0)
{
_field.Text = _field.Text.Substring(0, _field.Text.Length - 1);
Refresh(_field);
}
break;
case ConsoleKey.Tab: // Tab -> Move to the next field.
if (cki.Modifiers == ConsoleModifiers.Shift)
{
// Go backwards.
_currentField--;
// If we're at the first field, move to the last.
if (_currentField == -1)
_currentField = _textboxes.Count - 1;
}
else
{
// Go forwards
_currentField++;
// If we're in the last field already, move back to the first.
if (_currentField == _textboxes.Count)
_currentField = 0;
}
// Set the current field to the next one in the collection.
_field = _textboxes[_currentField];
_textboxes.FocusField = _field;
// Move the cursor to the location of the next field, accomodating
// any text that may already be there..
Console.SetCursorPosition(_field.Location.X + _field.Text.Length, _field.Location.Y);
break;
case ConsoleKey.Enter: // Enter -> Fire the complete event if it's wired.
if (_formCompleteEvent != null)
{
FormCompleteEventArgs fcea = new FormCompleteEventArgs();
_formCompleteEvent(this, fcea);
// The listener of this event will set the Cancel field if they
// want to re-use the form. If not cancelled, the form will
// be destroyed.
if (!fcea.Cancel)
{
return;
} // else the current form will be reused. Go back for more keys.
}
break;
case ConsoleKey.Escape: // Esc -> Fire the cancelled event if it's wired.
if (this.FormCancelled != null)
{
this.FormCancelled(this, System.EventArgs.Empty);
return;
}
break;
default: // Any other keystroke
if (_field != null)
{
// May not be an active textbox.
if (_field.Text.Length < _field.Length)
{
// The field is not yet full. It can be appended to.
_field.NonEventingText += cChar;
Console.ForegroundColor = _field.Foreground;
Console.BackgroundColor = _field.Background;
if (_field.PasswordChar != char.MinValue)
// It's a password field. Display the password character.
Console.Write(_field.PasswordChar);
else
// Not a password type field. Show the actual character.
Console.Write(cChar);
} // Field already full => no keystrokes accepted.
}
break;
} // Keystroke was not cancelled
} // Character was printable
} // End of switch statement
} // End loop for keypresses
}
/// <summary>
/// A method that loops and processes keystrokes until the form is complete,
/// either by <see cref="FormComplete">FormComplete</see> or
/// <see cref="FormCancelled">FormCancelled</see> events.
/// </summary>
private void LoopForKeypress()
{
// Loop for keypresses. Since we're doing all the work of processing, we have
// to trap special keypresses and respond appropriately
while (true)
{
// Blocks on the next function call.
ConsoleKeyInfo cki = Console.ReadKey(true);
ConsoleKey nKey = cki.Key;
// A key's been pressed. Figure out what to do.
// All actions will be against the current field, stored in _field.
char cChar = cki.KeyChar;
if (cChar != 0)
{
// Guard against unprintable chars.
KeyPressEventArgs kpea = new KeyPressEventArgs(_field, cChar);
if (_keyPressEvent != null)
{
_keyPressEvent(this, kpea);
}
if (!kpea.Cancel)
{
// Process the keystroke. It wasn't cancelled.
switch (nKey)
{
case ConsoleKey.Backspace: // Backspace pressed
// Is there a character to backspace over?
if (_field.Text.Length > 0)
{
_field.Text = _field.Text.Substring(0, _field.Text.Length - 1);
Refresh(_field);
}
break;
case ConsoleKey.Tab: // Tab -> Move to the next field.
if (cki.Modifiers == ConsoleModifiers.Shift)
{
// Go backwards.
_currentField--;
// If we're at the first field, move to the last.
if (_currentField == -1)
{
_currentField = _textboxes.Count - 1;
}
}
else
{
// Go forwards
_currentField++;
// If we're in the last field already, move back to the first.
if (_currentField == _textboxes.Count)
{
_currentField = 0;
}
}
// Set the current field to the next one in the collection.
_field = _textboxes[_currentField];
_textboxes.FocusField = _field;
// Move the cursor to the location of the next field, accomodating
// any text that may already be there..
Console.SetCursorPosition(_field.Location.X + _field.Text.Length, _field.Location.Y);
break;
case ConsoleKey.Enter: // Enter -> Fire the complete event if it's wired.
if (_formCompleteEvent != null)
{
FormCompleteEventArgs fcea = new FormCompleteEventArgs();
_formCompleteEvent(this, fcea);
// The listener of this event will set the Cancel field if they
// want to re-use the form. If not cancelled, the form will
// be destroyed.
if (!fcea.Cancel)
{
return;
} // else the current form will be reused. Go back for more keys.
}
break;
case ConsoleKey.Escape: // Esc -> Fire the cancelled event if it's wired.
if (this.FormCancelled != null)
{
this.FormCancelled(this, System.EventArgs.Empty);
return;
}
break;
default: // Any other keystroke
if (_field != null)
{
// May not be an active textbox.
if (_field.Text.Length < _field.Length)
{
// The field is not yet full. It can be appended to.
_field.NonEventingText += cChar;
Console.ForegroundColor = _field.Foreground;
Console.BackgroundColor = _field.Background;
if (_field.PasswordChar != char.MinValue)
{
// It's a password field. Display the password character.
Console.Write(_field.PasswordChar);
}
else
{
// Not a password type field. Show the actual character.
Console.Write(cChar);
}
} // Field already full => no keystrokes accepted.
}
break;
} // Keystroke was not cancelled
} // Character was printable
} // End of switch statement
} // End loop for keypresses
}
private static void LoginForm_FormComplete(ConsoleForm sender, FormCompleteEventArgs e)
{
if (e.Cancel || sender.Textboxes["txtServer"].Text == null)
{
ConsoleUtils.UOut(ConsoleColor.Yellow, "K, bye!");
return;
}
LoginResult loginResult = HandleLogin(sender.Textboxes["txtServer"].Text, sender.Textboxes["txtUser"].Text, sender.Textboxes["txtPass"].Text);
if (loginResult.Success == false)
{
DisplayLoginForm();
}
else
{
Console.ResetColor();
Console.Clear();
Console.Out.Flush();
EnterMainLoop();
}
}
