private AnnotatedCollectionI context;
/**
- * set the alignment or group context for this group
+ * Sets the alignment or group context for this group
*
- * @param context
+ * @param ctx
+ * @throws IllegalArgumentException
+ * if setting the context would result in a circular reference chain
*/
- public void setContext(AnnotatedCollectionI context)
+ public void setContext(AnnotatedCollectionI ctx)
{
- this.context = context;
+ AnnotatedCollectionI ref = ctx;
+ while (ref != null)
+ {
+ if (ref == this)
+ {
+ throw new IllegalArgumentException(
+ "Circular reference in SequenceGroup.context");
+ }
+ ref = ref.getContext();
+ }
+ this.context = ctx;
}
/*