question: public void addLayoutEditor ( LayoutEditor panel ) { if ( panels . size ( ) > 0 ) { for ( int i = 0 ; i < panels . size ( ) ; i ++ ) { LayoutEditor ed = panels . get ( i ) ; if ( ed == panel ) { return ; } } } panels . add ( panel ) ; }
target:  Keeps track of LayoutEditor panels that are using this LayoutBlock