How to use the photini.pyqt.QtWidgets.QDialogButtonBox function in Photini

message = MultiLineEdit(spell_check=True)
        dialog.layout().addRow(self.tr('Description'), message)
        location = SingleLineEdit(spell_check=True)
        dialog.layout().addRow(self.tr('Location'), location)
        privacy = QtWidgets.QComboBox()
        for display_name, value in (
                (self.tr('Only me'),            '{value: "SELF"}'),
                (self.tr('All friends'),        '{value: "ALL_FRIENDS"}'),
                (self.tr('Friends of friends'), '{value: "FRIENDS_OF_FRIENDS"}'),
                (self.tr('Friends + networks'), '{value: "NETWORKS_FRIENDS"}'),
                (self.tr('Everyone'),           '{value: "EVERYONE"}'),
                ):
            privacy.addItem(display_name, value)
        dialog.layout().addRow(self.tr('Privacy'), privacy)
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(dialog.accept)
        button_box.rejected.connect(dialog.reject)
        dialog.layout().addRow(button_box)
        if dialog.exec_() != QtWidgets.QDialog.Accepted:
            return
        if not self.authorise('write'):
            self.refresh(force=True)
            return
        name = name.toPlainText().strip()
        if not name:
            return
        data = {'name': name}
        message = message.toPlainText().strip()
        if message:
            data['message'] = message
        location = location.toPlainText().strip()

def __init__(self, *arg, **kw):
        super(EditSettings, self).__init__(*arg, **kw)
        self.config_store = QtWidgets.QApplication.instance().config_store
        self.setWindowTitle(self.tr('Photini: settings'))
        self.setLayout(QtWidgets.QVBoxLayout())
        # main dialog area
        scroll_area = QtWidgets.QScrollArea()
        self.layout().addWidget(scroll_area)
        panel = QtWidgets.QWidget()
        panel.setLayout(QtWidgets.QFormLayout())
        panel.layout().setRowWrapPolicy(max(QtWidgets.QFormLayout.WrapLongRows,
                                            panel.layout().rowWrapPolicy()))
        # apply & cancel buttons
        self.button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Apply | QtWidgets.QDialogButtonBox.Cancel)
        self.button_box.clicked.connect(self.button_clicked)
        self.layout().addWidget(self.button_box)
        # copyright holder name
        self.copyright_name = SingleLineEdit(spell_check=True)
        self.copyright_name.set_value(
            self.config_store.get('user', 'copyright_name', ''))
        panel.layout().addRow(self.tr('Copyright holder name'), self.copyright_name)
        # copyright text
        self.copyright_text = SingleLineEdit(spell_check=True)
        self.copyright_text.set_value(
            self.config_store.get('user', 'copyright_text', ''))
        self.copyright_text.setMinimumWidth(
            width_for_text(self.copyright_text, 'x' * 50))
        panel.layout().addRow(self.tr('Copyright text'), self.copyright_text)
        # creator name
        self.creator_name = SingleLineEdit(spell_check=True)

def new_set(self):
        dialog = QtWidgets.QDialog(parent=self)
        dialog.setWindowTitle(translate('FlickrTab', 'Create new Flickr album'))
        dialog.setLayout(QtWidgets.QFormLayout())
        title = SingleLineEdit(spell_check=True)
        dialog.layout().addRow(translate('FlickrTab', 'Title'), title)
        description = MultiLineEdit(spell_check=True)
        dialog.layout().addRow(translate(
            'FlickrTab', 'Description'), description)
        dialog.layout().addRow(QtWidgets.QLabel(translate(
            'FlickrTab', 'Album will be created when photos are uploaded')))
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(dialog.accept)
        button_box.rejected.connect(dialog.reject)
        dialog.layout().addRow(button_box)
        if dialog.exec_() != QtWidgets.QDialog.Accepted:
            return
        title = title.toPlainText()
        if not title:
            return
        description = description.toPlainText()
        widget = self.upload_config.add_set(title, description, None, index=0)
        widget.setChecked(True)

def __init__(self, *arg, **kw):
        super(EditSettings, self).__init__(*arg, **kw)
        self.config_store = QtWidgets.QApplication.instance().config_store
        self.setWindowTitle(self.tr('Photini: settings'))
        self.setLayout(QtWidgets.QVBoxLayout())
        # main dialog area
        scroll_area = QtWidgets.QScrollArea()
        self.layout().addWidget(scroll_area)
        panel = QtWidgets.QWidget()
        panel.setLayout(QtWidgets.QFormLayout())
        panel.layout().setRowWrapPolicy(max(QtWidgets.QFormLayout.WrapLongRows,
                                            panel.layout().rowWrapPolicy()))
        # apply & cancel buttons
        self.button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Apply | QtWidgets.QDialogButtonBox.Cancel)
        self.button_box.clicked.connect(self.button_clicked)
        self.layout().addWidget(self.button_box)
        # copyright holder name
        self.copyright_name = SingleLineEdit(spell_check=True)
        self.copyright_name.set_value(
            self.config_store.get('user', 'copyright_name', ''))
        panel.layout().addRow(self.tr('Copyright holder name'), self.copyright_name)
        # copyright text
        self.copyright_text = SingleLineEdit(spell_check=True)
        self.copyright_text.set_value(
            self.config_store.get('user', 'copyright_text', ''))
        self.copyright_text.setMinimumWidth(
            width_for_text(self.copyright_text, 'x' * 50))
        panel.layout().addRow(self.tr('Copyright text'), self.copyright_text)
        # creator name

def __init__(self, images, *arg, **kw):
        super(NewLensDialog, self).__init__(*arg, **kw)
        self.setWindowTitle(translate('TechnicalTab', 'Photini: define lens'))
        self.setLayout(QtWidgets.QVBoxLayout())
        # main dialog area
        scroll_area = QtWidgets.QScrollArea()
        scroll_area.setWidgetResizable(True)
        self.layout().addWidget(scroll_area)
        panel = QtWidgets.QWidget()
        panel.setLayout(QtWidgets.QFormLayout())
        panel.layout().setFieldGrowthPolicy(
            QtWidgets.QFormLayout.AllNonFixedFieldsGrow)
        # ok & cancel buttons
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(self.accept)
        button_box.rejected.connect(self.reject)
        self.layout().addWidget(button_box)
        # model
        self.lens_model = QtWidgets.QLineEdit()
        self.lens_model.setMinimumWidth(
            width_for_text(self.lens_model, 'x' * 35))
        panel.layout().addRow(
            translate('TechnicalTab', 'Model name'), self.lens_model)
        # maker
        self.lens_make = QtWidgets.QLineEdit()
        panel.layout().addRow(
            translate('TechnicalTab', "Maker's name"), self.lens_make)
        # serial number
        self.lens_serial = QtWidgets.QLineEdit()

widget['new_photo'] = QtWidgets.QCheckBox(
            translate('FlickrTab', 'Upload as new photo'))
        no_upload = QtWidgets.QCheckBox(
            translate('FlickrTab', 'No image upload'))
        no_upload.setChecked(True)
        button_group = QtWidgets.QButtonGroup()
        button_group.addButton(widget['replace_image'])
        button_group.addButton(widget['new_photo'])
        button_group.addButton(no_upload)
        for key in ('set_metadata', 'set_visibility', 'set_type',
                    'set_albums', 'replace_image', 'new_photo'):
            dialog.layout().addWidget(widget[key])
            widget[key].setChecked(self.replace_prefs[key])
        dialog.layout().addWidget(no_upload)
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(dialog.accept)
        button_box.rejected.connect(dialog.reject)
        dialog.layout().addWidget(button_box)
        if dialog.exec_() != QtWidgets.QDialog.Accepted:
            return None, photo_id
        for key in self.replace_prefs:
            self.replace_prefs[key] = widget[key].isChecked()
        return dict(self.replace_prefs), photo_id

translate('FlickrTab', 'Replace image'))
        widget['new_photo'] = QtWidgets.QCheckBox(
            translate('FlickrTab', 'Upload as new photo'))
        no_upload = QtWidgets.QCheckBox(
            translate('FlickrTab', 'No image upload'))
        no_upload.setChecked(True)
        button_group = QtWidgets.QButtonGroup()
        button_group.addButton(widget['replace_image'])
        button_group.addButton(widget['new_photo'])
        button_group.addButton(no_upload)
        for key in ('set_metadata', 'set_visibility', 'set_type',
                    'set_albums', 'replace_image', 'new_photo'):
            dialog.layout().addWidget(widget[key])
            widget[key].setChecked(self.replace_prefs[key])
        dialog.layout().addWidget(no_upload)
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(dialog.accept)
        button_box.rejected.connect(dialog.reject)
        dialog.layout().addWidget(button_box)
        if dialog.exec_() != QtWidgets.QDialog.Accepted:
            return None, photo_id
        for key in self.replace_prefs:
            self.replace_prefs[key] = widget[key].isChecked()
        return dict(self.replace_prefs), photo_id

def __init__(self, *arg, **kw):
        super(FacebookLoginPopup, self).__init__(*arg, **kw)
        self.setSizePolicy(
            QtWidgets.QSizePolicy.Maximum, QtWidgets.QSizePolicy.Maximum)
        self.setLayout(QtWidgets.QVBoxLayout())
        self.browser = WebView()
        self.browser.urlChanged.connect(self.auth_url_changed)
        self.layout().addWidget(self.browser)
        buttons = QtWidgets.QDialogButtonBox(QtWidgets.QDialogButtonBox.Cancel)
        buttons.rejected.connect(self.reject)
        self.layout().addWidget(buttons)

value = '\n'.join(value)
                else:
                    value = six.text_type(value)
                item = QtWidgets.QTableWidgetItem(value)
                table.setItem(row, n * 2, item)
            undo[key] = QtWidgets.QTableWidgetItem()
            undo[key].setFlags(undo[key].flags() | Qt.ItemIsUserCheckable)
            undo[key].setCheckState(False)
            table.setItem(row, 1, undo[key])
            labels.append(key)
            row += 1
        table.setVerticalHeaderLabels(labels)
        table.resizeColumnsToContents()
        table.resizeRowsToContents()
        dialog.layout().addWidget(table)
        button_box = QtWidgets.QDialogButtonBox(
            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
        button_box.accepted.connect(dialog.accept)
        button_box.rejected.connect(dialog.reject)
        dialog.layout().addWidget(button_box)
        if dialog.exec_() != QtWidgets.QDialog.Accepted:
            return
        changed = False
        dirty = False
        for key, widget in undo.items():
            if widget.checkState() == Qt.Checked:
                setattr(new_md, key, getattr(old_md, key))
                changed = True
            else:
                dirty = True
        if not dirty:
            self.reload_metadata()