private EmulatorComponent UpdateEmulatorComponent(Type type, String componentId, String updatedId, XmlReader config)
{
EmulatorComponent updated = _emulator.FindComponentById(updatedId);
if (updated == null)
{
throw new Exception("Cannot find component " + updatedId + ".");
}
if (type.IsAssignableFrom(updated.GetType()) == false)
{
throw new Exception("Cannot reconfigure a " + updated.GetType().ToString() + " into a " + type.ToString());
}
EmulatorComponent original = updated.Clone();
updated.Configure(config);
if (updated.IsReplaceableBy(original) == false)
{
// the crucial ID info has changed
throw new Exception("The identification information of " + updated.GetType().ToString() + " cannot be updated in " + updatedId + ".");
}
if (componentId != null)
{
updated.ComponentId = componentId;
}
return(updated);
}
private EmulatorComponent ReplaceEmulatorComponent(Type type, String componentId, String replacedId, XmlReader config)
{
EmulatorComponent replaced = _emulator.FindComponentById(replacedId);
if (replaced == null)
{
throw new Exception("Cannot find the component, " + replacedId + ", to be replaced.");
}
if (componentId == null)
{
componentId = replacedId;
}
// Make sure the new componentId isn't taken already
EmulatorComponent idMatched = _emulator.FindComponentById(componentId);
if (idMatched != null)
{
if (idMatched != replaced)
{
throw new Exception("The Component ID, " + componentId + ", has already been used.");
}
else if (idMatched.LinkedBy != null)
{
throw new Exception("Cannot replace the EmulatorComponent " + idMatched.ComponentId + " here because it's linked elsewhere.");
}
}
// Create the component and configure it
EmulatorComponent component = (EmulatorComponent)Activator.CreateInstance(type);
component.ComponentId = componentId;
component.SetEmulator(_emulator);
component.Configure(config);
if (replaced.IsReplaceableBy(component) == false)
{
throw new Exception("The new component cannot be used to replace the old one.");
}
_emulator.UnregisterComponent(replaced);
Debug.Assert(_emulator.FindReplaceableComponent(component) == null);
_emulator.RegisterComponent(component);
return(component);
}
