controller.py 文件源码

def openNewMenu(self, obj):
        op_n = 1
        total_rows = 0
        if obj != self.bt_next and obj != self.bt_previous:
            self.menu_type = obj.text.lower()

        cursor = self.database.loadArticles(self.menu_type, self.menu_page)

        self.a_articles.clear_widgets()

        for row in cursor:
            total_rows = total_rows + 1
            if(total_rows > 9) : break
            button = Button(text=row[1])
            button.bind(on_press=self.addToBuyList)
            button.item = Item(id_p = row[0], name = row[1], price = row[2], tax = 0.2)
            op_n = op_n + 1
            self.a_articles.add_widget(button)

        for a in range(op_n-1, 9):
            self.a_articles.add_widget(Label(text=''))

        if(total_rows > 9):
            self.bt_next.enabled = True
        else:
            self.bt_next.enabled = False

        if(self.menu_page > 0):
            self.bt_previous.enabled = True
        else:
            self.bt_previous.enabled = False

    ###