/// <summary>
/// This method is called when the selection changed event occurs. The sender should be the control
/// on which this behaviour is attached - so we convert the sender into a <seealso cref="UIElement"/>
/// and receive the Command through the <seealso cref="GetChangedCommand"/> getter listed above.
///
/// This implementation supports binding of delegate commands and routed commands.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void Selection_Changed(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
Selector uiElement = sender as Selector;
// Sanity check just in case this was somehow send by something else
if (uiElement == null)
{
return;
}
ICommand changedCommand = SelectionChangedCommand.GetChangedCommand(uiElement);
// There may not be a command bound to this after all
if (changedCommand == null)
{
return;
}
// Check whether this attached behaviour is bound to a RoutedCommand
if (changedCommand is RoutedCommand)
{
// Execute the routed command
(changedCommand as RoutedCommand).Execute(e.AddedItems, uiElement);
}
else
{
// Execute the Command as bound delegate
changedCommand.Execute(e.AddedItems);
}
}
private static void uiElement_KeyUp(object sender, KeyEventArgs e)
{
if (e == null)
{
return;
}
// Forward key event only if user has hit the return, BackSlash, or Slash key
if (e.Key != Key.Return)
{
return;
}
ComboBox uiElement = sender as ComboBox;
// Sanity check just in case this was somehow send by something else
if (uiElement == null)
{
return;
}
ICommand changedCommand = SelectionChangedCommand.GetChangedCommand(uiElement);
// There may not be a command bound to this after all
if (changedCommand == null)
{
return;
}
// Check whether this attached behaviour is bound to a RoutedCommand
if (changedCommand is RoutedCommand)
{
// Execute the routed command
(changedCommand as RoutedCommand).Execute(uiElement.Text, uiElement);
}
else
{
// Execute the Command as bound delegate
changedCommand.Execute(uiElement.Text);
}
}
