def _resetWidgets(self):
        """Resets all widgets of this dialog to its inital state.

        """
        self._filenameLineEdit.setText('')
        self._encodingComboBox.setCurrentIndex(self._idx)
        self._delimiterBox.reset()
        self._headerCheckBox.setChecked(False)
        self._statusBar.showMessage('')
Resets all widgets of this dialog to its inital state.