def createEditor(self, parent, option, index):
column = index.column()
if column == 0:
editor = PeriodicTableDialog(parent)
editor.setMultipleSelection(False)
editor.setRequiresSelection(True)
return editor
elif column == 1:
editor = QLineEdit(parent)
editor.setValidator(QDoubleValidator())
return editor
else:
return QItemDelegate.createEditor(self, parent, option, index)
