layout_orientation: str
control_types: dict

__init__(self, var, namespace=None): 

to_widget(self, parent=None): 

set_value(self): 

get_value(self): 

@property
value(self): 

observe(self, fn, names=None): 

construct(var, control_type=None, field_type=None, value=None, **attrs): 

infer_control(field_type=None, value=None, **ignored):