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#!/usr/bin/python3
# drop_down_widget.py
#
# Copyright:
# Copyright (C) 2024-2025 Bernd Schumacher <bernd@bschu.de>
#
# License: GPL-3.0+
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# .
# This package is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# .
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# Comment:
# On Debian systems, the complete text of the GNU General
# Public License version 3 can be found in
# "/usr/share/common-licenses/GPL-3".
""" customized DropDown class """
import sys
import os
import gi
dir1 = os.path.dirname(os.path.realpath(__file__))
dir2 = os.path.dirname(dir1)
sys.path.append(dir2)
try:
from cashbox.app import App, MinWindow
from cashbox.article import Article, DropDownHead, Sale, cent2str
except ImportError as exc:
print('Error: cashbox modules not found.', exc)
sys.exit(1)
try:
gi.require_version('Adw', '1')
gi.require_version('Gtk', '4.0')
from gi.repository import GObject, Gtk
except (ImportError, ValueError) as exc:
print('Error: Dependencies not met.', exc)
sys.exit(1)
@Gtk.Template(filename=f'{dir1}/drop_down_widget_row.ui')
class DropDownWidgetRow(Gtk.Box):
""" row of DropDown """
__gtype_name__ = 'DropDownWidgetRow'
w_name = Gtk.Template.Child()
w_price = Gtk.Template.Child()
@Gtk.Template(filename=f'{dir1}/drop_down_widget.ui')
class DropDownWidget(Gtk.Box):
""" Widget which displays Rows """
__gtype_name__ = 'DropDownWidget'
drop_down = Gtk.Template.Child()
def __init__(self, data_list, **kwargs):
super().__init__(**kwargs)
# Set model
self.drop_down.set_model(data_list)
# Set up the factory
factory = Gtk.SignalListItemFactory()
factory.connect("setup", self._on_factory_setup)
factory.connect("bind", self._on_factory_bind)
self.drop_down.set_factory(factory)
data_list.bind_property(
"n-items",
self.drop_down, "sensitive",
GObject.BindingFlags.SYNC_CREATE,
self._calc_sensitive, None)
def get_drop_down(self):
""" return drop_down """
return self.drop_down
def _calc_sensitive(self, _a, b):
ret = False
if b > 1:
ret = True
return ret
def _on_factory_setup(self, _factory, item):
drop_down_widget_row = DropDownWidgetRow()
item.set_child(drop_down_widget_row)
def _on_factory_bind(self, _factory, list_item):
box = list_item.get_child()
w_name = box.get_first_child()
w_price = w_name.get_next_sibling()
data = list_item.get_item()
if isinstance(data, Article):
w_name.set_text(data.name)
w_price.set_text(cent2str(data.price))
else:
assert isinstance(data, DropDownHead)
w_name.set_text(data.drop_down_head)
w_price.set_text("")
if __name__ == '__main__':
class DropDownWindow(MinWindow):
""" test Class """
def __init__(self, **kwargs):
super().__init__(**kwargs)
sale = Sale()
article = [("Banana", 1.10, 0), ("Apple", 2.0, 0),
("Strawberry", 2.50, 0), ("Pear", 3.35, 4),
("Watermelon", 1.0, 5), ("Blueberry", 2.0, 6)]
for f in article:
sale.main_list.append(Article(f[0], f[1], f[2]))
drop_down_widget = DropDownWidget(sale.drop_unpicked)
drop_down = drop_down_widget.get_drop_down()
drop_down.connect("notify::selected-item",
self.do_delete_selected_item)
self.set_content(drop_down_widget)
def do_delete_selected_item(self, dropdown, _b):
""" test method """
print("do_delete_selected_item")
if dropdown.get_selected() > 0:
article = dropdown.get_selected_item()
print(f"do_delete_selected_item: article=<{article}>")
dropdown.set_selected(0)
article.count = 1
class MyApp(App):
""" test class App """
def on_activate(self, app):
win = DropDownWindow(application=app)
win.present()
myapp = MyApp()
myapp.run(sys.argv)
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