/// <summary>
/// Can the client do the command?</summary>
/// <param name="commandTag">Command</param>
/// <returns>True iff client can do the command</returns>
public bool CanDoCommand(object commandTag)
{
bool enabled = false;
var context = m_contextRegistry.GetActiveContext <CircuitEditingContext>();
if (context != null)
{
ISelectionContext selectionContext = context.As <ISelectionContext>();
if (CommandTag.CreateMaster.Equals(commandTag))
{
enabled = selectionContext.GetLastSelected <Element>() != null; // at least one module selected
}
else if (CommandTag.ExpandMaster.Equals(commandTag))
{
enabled = selectionContext.GetLastSelected <SubCircuitInstance>() != null; // at least one mastered instance selected
}
}
return(enabled);
}