Ejemplo n.º 1
0
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':
            self._populate_payable_payments(OutPaymentView)
        elif self.model.kind == 'receivable':
            self._populate_payable_payments(InPaymentView)
        else:
            raise TypeError("unknown model kind: %r" % (self.model.kind, ))

    def _get_columns(self, kind):
        if kind in ['payable', 'receivable']:
            return self._get_payment_columns()
        else:
            return self._get_account_columns()

    def _get_account_columns(self):
        def format_withdrawal(value):
            if value < 0:
                return currency(abs(value)).format(symbol=True, precision=2)

        def format_deposit(value):
            if value > 0:
                return currency(value).format(symbol=True, precision=2)

        if self.model.account_type == Account.TYPE_INCOME:
            color_func = lambda x: False
        else:
            color_func = lambda x: x < 0
        return [Column('date', title=_("Date"), data_type=datetime.date, sorted=True),
                Column('code', title=_("Code"), data_type=unicode),
                Column('description', title=_("Description"),
                       data_type=unicode, expand=True),
                Column('account', title=_("Account"), data_type=unicode),
                Column('value',
                       title=self.model.account.get_type_label(out=False),
                       data_type=currency,
                       format_func=format_deposit),
                Column('value',
                       title=self.model.account.get_type_label(out=True),
                       data_type=currency,
                       format_func=format_withdrawal),
                ColoredColumn('total', title=_("Total"), data_type=currency,
                              color='red',
                              data_func=color_func)]

    def _get_payment_columns(self):
        return [SearchColumn('due_date', title=_("Due date"), data_type=datetime.date, sorted=True),
                IdentifierColumn('identifier', title=_("Code")),
                SearchColumn('description', title=_("Description"), data_type=unicode, expand=True),
                SearchColumn('value', title=_("Value"),
                             data_type=currency)]

    def append_transactions(self, transactions):
        for transaction in transactions:
            description = transaction.get_account_description(self.model)
            value = transaction.get_value(self.model)
            self._add_transaction(transaction, description, value)
        self.update_totals()

    def _populate_payable_payments(self, view_class):
        for view in self.app.store.find(view_class):
            self.search.result_view.append(view)

    def _add_transaction(self, transaction, description, value):
        item = Settable(transaction=transaction)
        self._update_transaction(item, transaction, description, value)
        self.search.result_view.append(item)
        return item

    def _update_transaction(self, item, transaction, description, value):
        item.account = description
        item.date = transaction.date
        item.description = transaction.description
        item.value = value
        item.code = transaction.code

    def update_totals(self):
        total = decimal.Decimal('0')
        for item in self.search.result_view:
            total += item.value
            item.total = total

    def _edit_transaction_dialog(self, item):
        store = api.new_store()
        if isinstance(item.transaction, AccountTransactionView):
            account_transaction = store.fetch(item.transaction.transaction)
        else:
            account_transaction = store.fetch(item.transaction)
        model = getattr(self.model, 'account', self.model)

        transaction = run_dialog(AccountTransactionEditor, self.app,
                                 store, account_transaction, model)

        if transaction:
            store.flush()
            self._update_transaction(item, transaction,
                                     transaction.edited_account.description,
                                     transaction.value)
            self.update_totals()
            self.search.result_view.update(item)
            self.app.accounts.refresh_accounts(self.app.store)
        store.confirm(transaction)
        store.close()

    def on_dialog__opened(self, dialog):
        dialog.connect('account-added', self.on_dialog__account_added)

    def on_dialog__account_added(self, dialog):
        self.app.accounts.refresh_accounts(self.app.store)

    def add_transaction_dialog(self):
        store = api.new_store()
        model = getattr(self.model, 'account', self.model)
        model = store.fetch(model)

        transaction = run_dialog(AccountTransactionEditor, self.app,
                                 store, None, model)
        if transaction:
            transaction.sync()
            value = transaction.value
            other = transaction.get_other_account(model)
            if other == model:
                value = -value
            item = self._add_transaction(transaction, other.description, value)
            self.update_totals()
            self.search.result_view.update(item)
            self.app.accounts.refresh_accounts(self.app.store)
        store.confirm(transaction)
        store.close()

    def _on_search__item_activated(self, objectlist, item):
        if self.model.kind == 'account':
            self._edit_transaction_dialog(item)