Python SearchSlave.set_text_field_columns方法代码示例

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]

#.........这里部分代码省略.........
        :param retval: optional parameter which will be selected when the
          dialog is closed
        """
        if retval is None:
            retval = self.get_selection()
        self.retval = retval
        self.search.save_columns()
        # FIXME: This should chain up so the "confirm" signal gets emitted
        self.close()

    def cancel(self, *args):
        self.retval = []
        self.search.save_columns()
        # FIXME: This should chain up so the "cancel" signal gets emitted
        self.close()

    # FIXME: -> remove/use

    # TODO: Check if we can remove
    def set_searchbar_label(self, label):
        search_filter = self.search.get_primary_filter()
        search_filter.set_label(label)

    def set_searchbar_search_string(self, string):
        if string == self.get_searchbar_search_string():
            return
        search_filter = self.search.get_primary_filter()
        search_filter.entry.set_text(string)

    def get_searchbar_search_string(self):
        search_filter = self.search.get_primary_filter()
        return search_filter.get_state().text

    def set_text_field_columns(self, columns):
        """See :class:`SearchSlave.set_text_field_columns`
        """
        self.search.set_text_field_columns(columns)

    def disable_search_entry(self):
        """See :class:`SearchSlave.disable_search_entry`
        """
        self.search.disable_search_entry()

    def add_filter(self, search_filter, position=SearchFilterPosition.BOTTOM,
                   columns=None, callback=None):
        """See :class:`SearchSlave.add_filter`
        """
        self.search.add_filter(search_filter, position, columns, callback)

    def row_activate(self, obj):
        """This is called when an item in the results list is double clicked.

        :param obj: the item that was double clicked.
        """
        if self.double_click_confirm:
            # But only if its also confirmable with ok_button
            if self.ok_button.props.sensitive:
                self.confirm()

    #
    # Filters
    #

    def create_branch_filter(self, label=None):
        from stoqlib.domain.person import Branch
        branches = Branch.get_active_branches(self.store)

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]
class PurchaseSelectionStep(BaseWizardStep):
    gladefile = 'PurchaseSelectionStep'

    def __init__(self, wizard, store):
        self._next_step = None
        BaseWizardStep.__init__(self, store, wizard)
        self.setup_slaves()

    def _create_search(self):
        self.search = SearchSlave(self._get_columns(),
                                  restore_name=self.__class__.__name__,
                                  store=self.store,
                                  search_spec=PurchaseOrderView)
        self.search.enable_advanced_search()
        self.attach_slave('searchbar_holder', self.search)
        executer = self.search.get_query_executer()
        executer.add_query_callback(self.get_extra_query)
        self._create_filters()
        self.search.result_view.set_selection_mode(gtk.SELECTION_MULTIPLE)
        self.search.result_view.connect('selection-changed',
                                        self._on_results__selection_changed)
        self.search.result_view.connect('row-activated',
                                        self._on_results__row_activated)
        self.search.focus_search_entry()

    def _create_filters(self):
        self.search.set_text_field_columns(['supplier_name', 'identifier_str'])

    def get_extra_query(self, states):
        query = PurchaseOrderView.status == PurchaseOrder.ORDER_CONFIRMED

        # Dont let the user receive purchases from other branches when working
        # in synchronized mode
        if api.sysparam.get_bool('SYNCHRONIZED_MODE'):
            branch = api.get_current_branch(self.store)
            query = And(query,
                        PurchaseOrderView.branch_id == branch.id)
        return query

    def _get_columns(self):
        return [IdentifierColumn('identifier', sorted=True),
                SearchColumn('open_date', title=_('Date Started'),
                             data_type=datetime.date, width=100),
                SearchColumn('expected_receival_date', data_type=datetime.date,
                             title=_('Expected Receival'), visible=False),
                SearchColumn('supplier_name', title=_('Supplier'),
                             data_type=str, searchable=True, width=130,
                             expand=True),
                SearchColumn('ordered_quantity', title=_('Qty Ordered'),
                             data_type=Decimal, width=110,
                             format_func=format_quantity),
                SearchColumn('received_quantity', title=_('Qty Received'),
                             data_type=Decimal, width=145,
                             format_func=format_quantity),
                SearchColumn('total', title=_('Order Total'),
                             data_type=currency, width=120)]

    def _update_view(self):
        selected_rows = self.search.result_view.get_selected_rows()
        can_continue = len(set((v.supplier_id, v.branch_id) for v in selected_rows)) == 1
        self.wizard.refresh_next(can_continue)
        self.details_button.set_sensitive(len(selected_rows) == 1)

    #
    # WizardStep hooks
    #

    def post_init(self):
        self._update_view()
        self.force_validation()

    def next_step(self):
        self.search.save_columns()
        selected_rows = self.search.result_view.get_selected_rows()

        return ReceivingOrderItemStep(self.store, self.wizard, self,
                                      selected_rows)

    def has_previous_step(self):
        return False

    def setup_slaves(self):
        self._create_search()

    #
    # Kiwi callbacks
    #

    def _on_results__selection_changed(self, results, purchase_order_view):
        self.force_validation()
        self._update_view()

    def _on_results__row_activated(self, results, purchase_order_view):
        run_dialog(PurchaseDetailsDialog, self.wizard, self.store,
                   model=purchase_order_view.purchase)

    def on_details_button__clicked(self, *args):
        selected = self.search.results.get_selected_rows()[0]
        if not selected:
            raise ValueError('You should have one order selected '
#.........这里部分代码省略.........

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]
class TransactionPage(object):
    # shows either a list of:
    #   - transactions
    #   - payments
    def __init__(self, model, app, parent):
        self.model = model
        self.app = app
        self.parent_window = parent
        self._block = False

        self._create_search()
        self._add_date_filter()

        self._setup_search()
        self.refresh()

    def get_toplevel(self):
        return self.parent_window

    def _create_search(self):
        self.search = SearchSlave(self._get_columns(self.model.kind),
                                  store=self.app.store)
        self.search.connect('result-item-activated',
                            self._on_search__item_activated)
        self.search.enable_advanced_search()
        self.search.set_result_view(FinancialSearchResults)
        self.result_view = self.search.result_view
        self.result_view.page = self
        tree_view = self.search.result_view.get_treeview()
        tree_view.set_rules_hint(True)
        tree_view.set_grid_lines(gtk.TREE_VIEW_GRID_LINES_BOTH)

    def _add_date_filter(self):
        self.date_filter = DateSearchFilter(_('Date:'))
        self.date_filter.clear_options()
        self.date_filter.add_option(Any, 0)
        year = datetime.datetime.today().year
        month_names = get_month_names()
        for i, month in enumerate(month_names):
            name = month_names[i]
            option = type(name + 'Option', (MonthOption, ),
                          {'name': _(name),
                           'month': i + 1,
                           'year': year})
            self.date_filter.add_option(option, i + 1)
        self.date_filter.add_custom_options()
        self.date_filter.mode.select_item_by_position(0)
        self.search.add_filter(self.date_filter)

    def _append_date_query(self, field):
        date = self.date_filter.get_state()
        queries = []
        if isinstance(date, DateQueryState) and date.date is not None:
            queries.append(Date(field) == date.date)
        elif isinstance(date, DateIntervalQueryState):
            queries.append(Date(field) >= date.start)
            queries.append(Date(field) <= date.end)
        return queries

    def _payment_query(self, store):
        executer = self.search.get_query_executer()
        search_spec = executer.search_spec
        queries = self._append_date_query(search_spec.due_date)
        if queries:
            return store.find(search_spec, And(*queries))

        return store.find(search_spec)

    def _transaction_query(self, store):
        queries = [Or(self.model.id == AccountTransaction.account_id,
                      self.model.id == AccountTransaction.source_account_id)]

        queries.extend(self._append_date_query(AccountTransaction.date))
        return store.find(AccountTransactionView, And(*queries))

    def show(self):
        self.search.show()

    def _setup_search(self):
        if self.model.kind == 'account':
            self.search.set_search_spec(AccountTransactionView)
            self.search.set_text_field_columns(['description'])
            self.search.set_query(self._transaction_query)
        elif self.model.kind == 'payable':
            self.search.set_text_field_columns(['description', 'supplier_name'])
            self.search.set_search_spec(OutPaymentView)
            self.search.set_query(self._payment_query)
        elif self.model.kind == 'receivable':
            self.search.set_text_field_columns(['description', 'drawee'])
            self.search.set_search_spec(InPaymentView)
            self.search.set_query(self._payment_query)
        else:
            raise TypeError("unknown model kind: %r" % (self.model.kind, ))

    def refresh(self):
        self.search.result_view.clear()
        if self.model.kind == 'account':
            transactions = AccountTransactionView.get_for_account(self.model, self.app.store)
            self.append_transactions(transactions)
        elif self.model.kind == 'payable':
#.........这里部分代码省略.........

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]
class QuoteGroupSelectionStep(BaseWizardStep):
    gladefile = 'QuoteGroupSelectionStep'

    def __init__(self, wizard, store):
        self._next_step = None
        BaseWizardStep.__init__(self, store, wizard)
        self._setup_slaves()

    def _setup_slaves(self):
        self.search = SearchSlave(self._get_columns(),
                                  restore_name=self.__class__.__name__,
                                  search_spec=QuotationView,
                                  store=self.store)
        self.attach_slave('search_group_holder', self.search)

        self.search.set_text_field_columns(['supplier_name', 'identifier_str'])
        filter = self.search.get_primary_filter()
        filter.set_label(_(u'Supplier:'))
        self.search.focus_search_entry()
        self.search.results.connect('selection-changed',
                                    self._on_searchlist__selection_changed)
        self.search.results.connect('row-activated',
                                    self._on_searchlist__row_activated)

        date_filter = DateSearchFilter(_('Date:'))
        self.search.add_filter(date_filter, columns=['open_date', 'deadline'])

        self.edit_button.set_sensitive(False)
        self.remove_button.set_sensitive(False)

    def _get_columns(self):
        return [IdentifierColumn('identifier', title=_("Quote #"), sorted=True),
                IdentifierColumn('group_identifier', title=_('Group #')),
                Column('supplier_name', title=_('Supplier'), data_type=str,
                       width=300),
                Column('open_date', title=_('Open date'),
                       data_type=datetime.date),
                Column('deadline', title=_('Deadline'),
                       data_type=datetime.date)]

    def _can_purchase(self, item):
        return item.cost > currency(0) and item.quantity > Decimal(0)

    def _can_order(self, quotation):
        if quotation is None:
            return False

        for item in quotation.purchase.get_items():
            if not self._can_purchase(item):
                return False
        return True

    def _update_view(self):
        selected = self.search.results.get_selected()
        has_selected = selected is not None
        self.edit_button.set_sensitive(has_selected)
        self.remove_button.set_sensitive(has_selected)
        self.wizard.refresh_next(self._can_order(selected))

    def _run_quote_editor(self):
        store = api.new_store()
        selected = store.fetch(self.search.results.get_selected().purchase)
        retval = run_dialog(QuoteFillingDialog, self.wizard, selected, store)
        store.confirm(retval)
        store.close()
        self._update_view()

    def _remove_quote(self):
        q = self.search.results.get_selected().quotation
        msg = _('Are you sure you want to remove "%s" ?') % q.get_description()
        if not yesno(msg, gtk.RESPONSE_NO,
                     _("Remove quote"), _("Don't remove")):
            return

        store = api.new_store()
        group = store.fetch(q.group)
        quote = store.fetch(q)
        group.remove_item(quote)
        # there is no reason to keep the group if there's no more quotes
        if group.get_items().count() == 0:
            store.remove(group)
        store.confirm(True)
        store.close()
        self.search.refresh()

    #
    # WizardStep hooks
    #

    def next_step(self):
        self.search.save_columns()
        selected = self.search.results.get_selected()
        if selected is None:
            return

        return QuoteGroupItemsSelectionStep(self.wizard, self.store,
                                            selected.group, self)

    #
    # Callbacks
#.........这里部分代码省略.........

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]

#.........这里部分代码省略.........
        self.results.set_selection_mode(self.selection_mode)
        self.results.connect('cell-edited', self._on_results__cell_edited)
        self.results.connect('selection-changed',
                             self._on_results__selection_changed)
        self.results.connect('row-activated', self._on_results__row_activated)

    def _setup_details_slave(self):
        # FIXME: Gross hack
        has_details_btn = hasattr(self, 'on_details_button_clicked')
        has_print_btn = self.report_class is not None
        self.results.connect('has-rows', self._has_rows)
        if not (has_details_btn or has_print_btn):
            self._details_slave = None
            return
        self._details_slave = _SearchDialogDetailsSlave()
        self.attach_slave('details_holder', self._details_slave)
        if has_details_btn:
            self._details_slave.connect("details",
                                        self.on_details_button_clicked)
        else:
            self._details_slave.details_button.hide()
        if has_print_btn:
            self._details_slave.connect("print", self._on_print_button__clicked)
            self.set_print_button_sensitive(False)
        else:
            self._details_slave.print_button.hide()

    def _create_default_filters(self):
        """Creates default filters

        This will create filters based on attributes defined on the class.
        """
        if self.text_field_columns is not None:
            self.set_text_field_columns(self.text_field_columns)

        if self.branch_filter_column is not None:
            self.branch_filter = self.create_branch_filter(
                column=self.branch_filter_column)

        if self.unlimited_results:
            self.search.get_query_executer().set_limit(-1)

    #
    # Public API
    #

    def add_button(self, label, stock=None, image=None):
        """Adds a button in the bottom of the dialog.

        :param label: the text that will be displayed by the button.
        :param stock: the gtk stock id to be used in the button.
        :param image: the image filename.
        """
        button = gtk.Button(label=label)
        if image:
            image_widget = gtk.Image()
            image_widget.set_from_file(
                environ.get_resource_filename('stoq', 'pixmaps', image))
            image_widget.show()
            button.set_image(image_widget)
        elif stock:
            button_set_image_with_label(button, stock, label)
        self.action_area.set_layout(gtk.BUTTONBOX_END)
        self.action_area.pack_start(button, False, False, 6)
        self.action_area.set_child_secondary(button, True)
        return button

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]

#.........这里部分代码省略.........
        insensitive.

        :param widgets: a list of widgets
        :param validation_func: a function for validation. It should
            return either ``True`` or ``False``.
        :param args: args that will be passed to *validation_func*
        """
        assert callable(validation_func)

        for widget in widgets:
            validators = self._sensitive_group.setdefault(widget, set())
            validators.add((validation_func, args))

    def run_dialog(self, dialog_class, *args, **kwargs):
        """ Encapsuled method for running dialogs. """
        return run_dialog(dialog_class, self, *args, **kwargs)

    @cached_function()
    def has_open_inventory(self):
        return Inventory.has_open(self.store,
                                  api.get_current_branch(self.store))

    def check_open_inventory(self):
        """Checks if there is an open inventory.

        In the case there is one, will call set_open_inventory (subclasses
        should implement it).

        Returns True if there is an open inventory. False otherwise
        """
        inventory_bar = getattr(self, 'inventory_bar', None)

        if self.has_open_inventory():
            if inventory_bar:
                inventory_bar.show()
            else:
                self._display_open_inventory_message()
            self.set_open_inventory()
            return True
        elif inventory_bar:
            inventory_bar.hide()
            return False

    # FIXME: Most of these should be removed and access the search API
    #        directly, eg, self.search.clear() etc

    def add_filter(self, search_filter, position=SearchFilterPosition.BOTTOM,
                   columns=None, callback=None):
        """
        See :class:`SearchSlave.add_filter`
        """
        self.search.add_filter(search_filter, position, columns, callback)

    def set_text_field_columns(self, columns):
        """
        See :class:`SearchSlave.set_text_field_columns`
        """
        self.search.set_text_field_columns(columns)

    def refresh(self, rollback=True):
        """
        See :class:`stoqlib.gui.search.searchslave.SearchSlave.refresh`
        """
        # Since the store here is actually a transaction and the items
        # on it can be changed from another station, do a rollback so
        # the items get reloaded, avoiding cache problems
        # Note that this gets mocked on tests to not do the rollback
        if rollback:
            self.store.rollback(close=False)
        self.search.refresh()

    def clear(self):
        """
        See :class:`stoqlib.gui.search.searchslave.SearchSlave.clear`
        """
        self.search.clear()

    def select_result(self, result):
        """Select the object in the result list

        If the object is not in the list (filtered out, for instance), no error
        is thrown and nothing is selected
        """
        try:
            self.results.select(result)
        except ValueError:
            pass

    #
    # Callbacks
    #

    def on_search__search_completed(self, search, results, states):
        self.search_completed(results, states)

        has_results = len(results)
        for widget in [self.window.Print,
                       self.window.ExportSpreadSheet]:
            widget.set_sensitive(has_results)
        self.search.save_filter_settings('app-ui', self.app_name)

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]
class ReceivingSelectionStep(BaseWizardStep):
    gladefile = 'PurchaseSelectionStep'

    def __init__(self, wizard, store):
        self._next_step = None
        BaseWizardStep.__init__(self, store, wizard)
        self.setup_slaves()

    def _create_search(self):
        self.search = SearchSlave(self._get_columns(),
                                  restore_name=self.__class__.__name__,
                                  store=self.store,
                                  search_spec=PurchaseReceivingView)
        self.search.enable_advanced_search()
        self.attach_slave('searchbar_holder', self.search)
        executer = self.search.get_query_executer()
        executer.add_query_callback(self.get_extra_query)
        self._create_filters()
        self.search.result_view.set_selection_mode(Gtk.SelectionMode.MULTIPLE)
        self.search.result_view.connect('selection-changed',
                                        self._on_results__selection_changed)
        self.search.result_view.connect('row-activated',
                                        self._on_results__row_activated)
        self.search.focus_search_entry()

    def _create_filters(self):
        self.search.set_text_field_columns(['supplier_name', 'purchase_identifier'])

    def get_extra_query(self, states):
        query = And(Eq(PurchaseReceivingView.purchase_group, None),
                    Eq(PurchaseReceivingView.receiving_invoice, None))

        # Dont let the user receive purchases from other branches when working
        # in synchronized mode
        if (api.sysparam.get_bool('SYNCHRONIZED_MODE') and not
                api.can_see_all_branches()):
            branch = api.get_current_branch(self.store)
            query = And(query, PurchaseReceivingView.branch_id == branch.id)
        return query

    def _get_columns(self):
        return [IdentifierColumn('identifier', _('Receiving #'), width=140),
                IdentifierColumn('purchase_identifier', _('Purchase #'), width=110),
                SearchColumn('packing_number', title=_('Packing Number'),
                             data_type=str, visible=False),
                SearchColumn('receival_date', _('Receival date'), expand=True,
                             data_type=datetime.date, sorted=True, width=110),
                SearchColumn('supplier_name', _('Supplier'), data_type=str,
                             expand=True),
                SearchColumn('responsible_name', _('Responsible'),
                             data_type=str, visible=False, expand=True),
                SearchColumn('purchase_responsible_name', _('Purchaser'),
                             data_type=str, visible=False, expand=True),
                SearchColumn('invoice_number', _('Invoice #'), data_type=int,
                             width=80),
                Column('subtotal', title=_('Products total'),
                       data_type=currency, width=150)]

    def _update_view(self):
        selected_rows = self.search.result_view.get_selected_rows()
        can_continue = len(set((v.supplier_id, v.branch_id) for v in selected_rows)) == 1
        self.wizard.refresh_next(can_continue)
        self.details_button.set_sensitive(len(selected_rows) == 1)

    #
    # WizardStep hooks
    #

    def post_init(self):
        self._update_view()
        self.force_validation()

    def next_step(self):
        self.search.save_columns()
        selected_rows = self.search.result_view.get_selected_rows()

        return ProductsCostCheckStep(self.wizard, self, self.store, selected_rows)

    def has_previous_step(self):
        return False

    def setup_slaves(self):
        self._create_search()

    #
    # Kiwi callbacks
    #

    def _on_results__selection_changed(self, results, purchase_order_view):
        self.force_validation()
        self._update_view()

    def _on_results__row_activated(self, results, receiving_order_view):
        run_dialog(ReceivingOrderDetailsDialog, self.wizard, self.store,
                   model=receiving_order_view.order)

    def on_details_button__clicked(self, *args):
        selected = self.search.results.get_selected_rows()[0]
        if not selected:
            raise ValueError('You should have one order selected '
#.........这里部分代码省略.........

# 需要导入模块: from stoqlib.gui.search.searchslave import SearchSlave [as 别名]
# 或者: from stoqlib.gui.search.searchslave.SearchSlave import set_text_field_columns [as 别名]
class PurchaseSelectionStep(BaseWizardStep):
    gladefile = 'PurchaseSelectionStep'

    def __init__(self, wizard, store):
        self._next_step = None
        BaseWizardStep.__init__(self, store, wizard)
        self.setup_slaves()

    def _refresh_next(self, validation_value):
        has_selection = self.search.results.get_selected() is not None
        self.wizard.refresh_next(has_selection)

    def _create_search(self):
        self.search = SearchSlave(self._get_columns(),
                                  restore_name=self.__class__.__name__,
                                  store=self.store,
                                  search_spec=PurchaseOrderView)
        self.search.enable_advanced_search()
        self.attach_slave('searchbar_holder', self.search)
        executer = self.search.get_query_executer()
        executer.add_query_callback(self.get_extra_query)
        self._create_filters()
        self.search.results.connect('selection-changed',
                                    self._on_results__selection_changed)
        self.search.results.connect('row-activated',
                                    self._on_results__row_activated)
        self.search.focus_search_entry()

    def _create_filters(self):
        self.search.set_text_field_columns(['supplier_name', 'identifier_str'])

    def get_extra_query(self, states):
        query = PurchaseOrderView.status == PurchaseOrder.ORDER_CONFIRMED

        # Dont let the user receive purchases from other branches when working
        # in synchronized mode
        if api.sysparam.get_bool('SYNCHRONIZED_MODE'):
            branch = api.get_current_branch(self.store)
            query = And(query,
                        PurchaseOrderView.branch_id == branch.id)
        return query

    def _get_columns(self):
        return [IdentifierColumn('identifier', sorted=True),
                SearchColumn('open_date', title=_('Date Started'),
                             data_type=datetime.date, width=100),
                SearchColumn('expected_receival_date', data_type=datetime.date,
                             title=_('Expected Receival'), visible=False),
                SearchColumn('supplier_name', title=_('Supplier'),
                             data_type=str, searchable=True, width=130,
                             expand=True),
                SearchColumn('ordered_quantity', title=_('Qty Ordered'),
                             data_type=Decimal, width=110,
                             format_func=format_quantity),
                SearchColumn('received_quantity', title=_('Qty Received'),
                             data_type=Decimal, width=145,
                             format_func=format_quantity),
                SearchColumn('total', title=_('Order Total'),
                             data_type=currency, width=120)]

    def _update_view(self):
        has_selection = self.search.results.get_selected() is not None
        self.details_button.set_sensitive(has_selection)

    #
    # WizardStep hooks
    #

    def post_init(self):
        self._update_view()
        self.register_validate_function(self._refresh_next)
        self.force_validation()

    def next_step(self):
        self.search.save_columns()
        selected = self.search.results.get_selected()
        purchase = selected.purchase

        # We cannot create the model in the wizard since we haven't
        # selected a PurchaseOrder yet which ReceivingOrder depends on
        # Create the order here since this is the first place where we
        # actually have a purchase selected
        if not self.wizard.model:
            self.wizard.model = self.model = ReceivingOrder(
                responsible=api.get_current_user(self.store),
                supplier=purchase.supplier, invoice_number=None,
                branch=purchase.branch, purchase=purchase,
                store=self.store)

        # Remove all the items added previously, used if we hit back
        # at any point in the wizard.
        if self.model.purchase != purchase:
            self.model.remove_items()
            # This forces ReceivingOrderProductStep to create a new model
            self._next_step = None

        if selected:
            self.model.purchase = purchase
            self.model.branch = purchase.branch
            self.model.supplier = purchase.supplier
#.........这里部分代码省略.........