[Description] Flag, indicating if the widget is disabled. Widget marks the bounding box with a "disabled" class, but other than that the disabled implementation is left to the specific widget class. [Attribute] 
disabled
b o u n d i n g B o x
c o n t e n t B o x
s r c N o d e
t a b I n d e x
f o c u s e d
d i s a b l e d
v i s i b l e
h e i g h t
w i d t h
s t r i n g s