//where we put event listeners
#region event listeneres
/// <summary>
/// Will be called whenever someone makes a change to the "ProcessUnit" property
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void OnStreamPropertyChange(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
//cast the new value as a ProcessUnitType enum
StreamType type = (StreamType)e.NewValue;
//turn the DependencyObject into a ProcessUnitPaletteItem
StreamPaletteItem item = (StreamPaletteItem)d;
//get the associated process unit type
IStream stream = StreamFactory.StreamFromStreamType(type);
item.LocalStream = stream;
//should use data binding, but meh
item.IconSource = StreamFactory.IconFromStreamType(type);
item.Description = item.Description;
}