boolean function ( ) { return selectedNodeObject == null ; }
determines whether the copy button is disabled . this should only occur when there is no node selected , which occurs at initialization and when a node is deleted . concode_field_sep DynamicNodeUserObject selectedNodeObject concode_elem_sep String ROOT_NODE_TEXT concode_elem_sep DefaultTreeModel model concode_elem_sep int labelCount concode_field_sep DefaultTreeModel getModel concode_elem_sep void setSelectedNodeObject concode_elem_sep boolean isDeleteDisabled concode_elem_sep DynamicNodeUserObject getSelectedNodeObject concode_elem_sep void copySelectedNode concode_elem_sep void deleteSelectedNode concode_elem_sep int getIncreasedLabelCount