#NEWLINE# def __init__( self , **kwargs ) : #NEWLINE# #INDENT# if ( kwargs . __class__ == Layout ) : #NEWLINE# #INDENT# raise Exception ( 'The Layout class is abstract and                 cannot be used directly.' ) #NEWLINE# #UNINDENT# if ( self . _trigger_layout is None ) : #NEWLINE# #INDENT# self . _trigger_layout = Clock . create_trigger ( self . do_layout , ( - 1 ) ) #NEWLINE# #UNINDENT# super ( Layout , self ) . __init__ ( ** kwargs )