Text has changed

def text_changed(self):
        """Text has changed"""
        # Save text as bytes, if it was initially bytes
        if self.is_binary:
            self.text = to_binary_string(self.edit.toPlainText(), 'utf8')
        else:
            self.text = to_text_string(self.edit.toPlainText())
        if self.btn_save_and_close:
            self.btn_save_and_close.setEnabled(True)
            self.btn_save_and_close.setAutoDefault(True)
            self.btn_save_and_close.setDefault(True)