def receiveMail(self):
    self.delegate.reset()
    receiverView = ReceiverView()
    self.delegate.receiverView = receiverView
    receiverModel = ReceiverModel()
    receiverModel.delegate = self.delegate
    self.delegate.receiverModel = receiverModel
    receiverView.delegate = self.delegate
    self.centralWidget().changeLeftWidget(receiverView)
def receiveMail(self):
    self.delegate.reset()
    receiverView = ReceiverView()
    self.delegate.receiverView = receiverView
    receiverModel = ReceiverModel()
    receiverModel.delegate = self.delegate
    self.delegate.receiverModel = receiverModel
    receiverView.delegate = self.delegate
    self.centralWidget().changeLeftWidget(receiverView)