def __init__(self, stem=None, choices=None, feedback=None, comment=None):
super(multiplechoice, self).__init__()
self.children.append(Join.as_element(stem or []))
self.children.append(_choices_cls(choices or []))
self.children.append(feedback or Join([]))
self.children.append(comment or Join([]))
self.id = id(self)
def invoke_body(cls, job, tokens, new):
data = super(multiplechoice, cls).invoke_body(job, tokens, new)
data = Join(data)
# Get comments and feedback
new.feedback = Join.as_element([ x.unlinked() for x in data if isinstance(x, feedback) ])
new.comment = Join.as_element([ x.unlinked() for x in data if isinstance(x, comment) ])
# Discard all data after choices
try:
choices_ = data.get(choices)
[ x.unlink() for x in choices_.get_siblings_next() ]
except ValueError:
choices_ = choices()
# Reorganize elements
new.choices = choices_.unlinked()
new.stem = Join.as_element(strip(data.clear()))
new.id = id(new)
return []