if (params.delegateTarget == null)
setDelegateTarget(parentComponent);
else
- setDelegateTarget(parentComponent.submodel.getComponentsByName().get(params.delegateTarget));
+ {
+ ModelComponent delegateTarget = parentComponent.submodel.getComponentsByName().get(params.delegateTarget);
+ if (delegateTarget == null)
+ throw new NullPointerException("No subcomponent with name " + params.delegateTarget);
+ setDelegateTarget(delegateTarget);
+ }
setSubStateID(params.subStateID);
}
+ parentComponent.submodel.addComponentRemovedListener(c ->
+ {
+ if (delegateTarget == c)
+ delegateTarget = null;
+ });
}
public void set(ModelComponent delegateTarget, String subStateID)
this.delegateTarget = delegateTarget;
}
+ public ModelComponent getDelegateTarget()
+ {
+ return delegateTarget;
+ }
+
public void setSubStateID(String subStateID)
{
this.subStateID = subStateID;
}
+ public String getSubStateID()
+ {
+ return subStateID;
+ }
+
@Override
public Object getHighLevelState()
{
+ if (delegateTarget == null)
+ throw new IllegalStateException("Delegating to a component that was destroyed");
return delegateTarget.getHighLevelState(subStateID);
}
@Override
public void setHighLevelState(Object newState)
{
+ if (delegateTarget == null)
+ throw new IllegalStateException("Delegating to a component that was destroyed");
delegateTarget.setHighLevelState(subStateID, newState);
}