|| valueEditor.getText( ).trim( ).length( ) != 0 );
|| ( valueEditor.getText( ).trim( ).length( ) != 0 && selectedList.indexOf( valueEditor.getText( ) .trim( ) ) == -1 ) );
	private void updateButtons( )	{		add.setEnabled( valueList.getSelectionCount( ) != 0				|| valueEditor.getText( ).trim( ).length( ) != 0 );		addAll.setEnabled( valueList.getItemCount( ) != 0 );		remove.setEnabled( selectedList.getSelectionCount( ) != 0 );		removeAll.setEnabled( selectedList.getItemCount( ) != 0 );		getOkButton( ).setEnabled( selectedList.getItemCount( ) != 0 );	}