python - Correct way to use the signal closeEditor in QStyledItemDelegate? -

i overriding qstyleditemdelegate class , reimplementing eventfilter function can customize editor behavior when tab press detected. however, following not working. correct way invoke closeeditor signal?

class customdelegate(qstyleditemdelegate):     def __init__(self, parent=none):         super(customdelegate, self).__init__(parent)      def eventfilter(self, editor, event):         if (event.type() == qevent.keypress ,             event.key() == qt.key_tab):             print "tab captured in editor"             self.commitdata.emit(editor) #this working             self.closeeditor.emit(editor) #this not seem anything??             return true         return qstyleditemdelegate.eventfilter(self,editor,event) 

this old question, ran same issue , found question.

i solved changing the

self.closeeditor.emit(editor)

line to

self.closeeditor.emit(editor, qabstractitemdelegate.nohint).

the commitdata call setmodeldata. if don't call closeeditor, setmodeldata called again editor close.