B p[@s\dZddlmZddlmZmZddlmZmZddl m Z ddl m Z Gdd d eZ d S) zContains the DOMWidget class)Unicode)Widgetwidget_serialization) InstanceDict TypedTuple)Layout)StylecsneZdZdZedjddZeeddjddZe e jfddie Z dd Z d d Zfd d ZZS) DOMWidgetz(Widget that can be inserted into the DOMZDOMWidgetModelT)syncz)CSS classes applied to widget DOM element)Ztraithelpr cCs ||jkrt|j|g|_|S)z{ Adds a class to the top level element of the widget. Doesn't add the class if it already exists. ) _dom_classeslist)self classNamer;lib/python3.7/site-packages/ipywidgets/widgets/domwidget.py add_classs zDOMWidget.add_classcs$|jkr fdd|jD|_|S)z Removes a class from the top level element of the widget. Doesn't remove the class if it doesn't exist. csg|]}|kr|qSrr).0c)rrr %sz*DOMWidget.remove_class..)r )rrr)rr remove_classs zDOMWidget.remove_classc#sVxDtt|D]2}|dkrs