+ /**
+ * ordered list of annotation values displayed per sequence in ID panel
+ */
+ private IdColumns id_columns = null;
+
+ /**
+ * available and currently visible columns for this view
+ */
+ @Override
+ public IdColumns getIdColumns()
+ {
+ if (alignment == null)
+ {
+ return null;
+ }
+ if (id_columns == null)
+ {
+ id_columns = new IdColumns(alignment);
+ }
+ return id_columns;
+ }
+