/// <summary>
/// A keyboard key has been issued in a parameter input field.
/// </summary>
///
/// If the key is returned the value in the field is stored back
/// to the parameters data store, the input is disabled, and
/// the label is shown with the new value.
///
/// <param name="sender"></param>
/// <param name="e"></param>
///
private void ParameterEntry_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Return || e.Key == Key.Tab)
{
TextBox box = (TextBox)sender;
e.Handled = true;
int selectedIndex = ProgramParametersLB.SelectedIndex;
try
{
Parameters[selectedIndex].Value = box.Text;
}
catch (Exception /*ex*/)
{
/* //TODO do something with the error */
}
RefreshCommandList();
var moveDown = new TraversalRequest(FocusNavigationDirection.Down);
//if it couldn't focus on the next element, we're at the end
//seems like setting "Cycle" on the tab mode would solve this, but I'm doing it wrong or something in the xaml
//hacky way of getting the first list box item, finding the parameter textbox and setting focus
//using wpf dark magic
if (!box.MoveFocus(moveDown))
{
ListBoxItem firstItem = ProgramParametersLB.ItemContainerGenerator.ContainerFromIndex(0) as ListBoxItem;
//FindChildControlByName is an extension method found in Utiity.cs class
TextBox firstParameterEntry = firstItem.FindChildControlByName <TextBox>("ParameterEntry");
firstParameterEntry.Focus();
}
}
if (e.Key == Key.U)//(Keyboard.IsKeyDown(Key.LeftShift) && e.Key == Key.Up)
{
if (ProgramCommandsLB.SelectedIndex > 0)
{
int index = ProgramCommandsLB.SelectedIndex;
Command item = Commands[index];
Commands.RemoveAt(index);
Commands.Insert(index - 1, item);
ProgramCommandsLB.SelectedIndex = index - 1;
}
}
if (e.Key == Key.L) //(Keyboard.IsKeyDown(Key.LeftShift) && e.Key == Key.Up)
{
if (ProgramCommandsLB.SelectedIndex < ProgramCommandsLB.Items.Count - 1)
{
int index = ProgramCommandsLB.SelectedIndex;
Command item = Commands[index];
Commands.RemoveAt(index);
Commands.Insert(index + 1, item);
ProgramCommandsLB.SelectedIndex = index + 1;
}
}
if (e.Key == Key.Delete || e.Key == Key.Back)
{
if (ProgramCommandsLB.SelectedIndex >= 0)
{
int index = ProgramCommandsLB.SelectedIndex;
Commands.RemoveAt(index);
if (index < ProgramCommandsLB.Items.Count)
{
ProgramCommandsLB.SelectedIndex = index;
}
else if (ProgramCommandsLB.Items.Count > 0)
{
ProgramCommandsLB.SelectedIndex = ProgramCommandsLB.Items.Count - 1;
}
}
}
}
