Python3 KivyMD - MDDialog get ItemConfirm text value - kivy

Question

I want to pass to my project_selected function the selected item in my MDDialog after pressing the OK button. But I can't figure out how can I get the value and do this.
I could print the value inside my set_icon funtion in ItemConfirm class, but I don't know whats the better way to pass that value to HomeWindow(Screen) class or if it is possible to call it directly from inside of it once that the ItemConfirm is already called from inside a function that is part of HomeWindow class.
main.py
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen, ScreenManager
from kivymd.app import MDApp
from kivymd.uix.button import MDFlatButton
from kivymd.uix.dialog import MDDialog
from kivymd.uix.list import OneLineAvatarIconListItem
class ItemConfirm(OneLineAvatarIconListItem):
divider = None
def set_icon(self, instance_check):
print(self.text)
instance_check.active = True
check_list = instance_check.get_widgets(instance_check.group)
for check in check_list:
if check != instance_check:
check.active = False
class HomeWindow(Screen):
dialog = None
def show_confirmation_dialog(self):
projects = [{id: 0, name: "example1"},{id: 1, name: "example2"}]
if not self.dialog:
self.dialog = MDDialog(
title="Projects",
type="confirmation",
auto_dismiss=False,
items=[ItemConfirm(text=f"{project['name']}") for project in projects],
buttons=[
MDFlatButton(text="CANCEL", theme_text_color="Custom"),
MDFlatButton(
text="OK",
theme_text_color="Custom",
on_release=self.project_selected,
),
],
)
self.dialog.open()
def project_selected(self, *args, **kwargs):
self.ids.project_selection.text = self.dialog.text
class WindowManager(ScreenManager):
pass
class RlogTimer(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "BlueGray"
self.root = Builder.load_file("templates/main.kv")
return self.root
if __name__ == "__main__":
RlogTimer().run()
templates/main.kv
#: import NoTransition kivy.uix.screenmanager.NoTransition
WindowManager:
HomeWindow:
<ScreenManager>:
transition: NoTransition()
<ItemConfirm>:
on_release: root.set_icon(check)
CheckboxLeftWidget:
id: check
group: "check"
<HomeWindow>:
name: "home"
MDBoxLayout:
orientation: "vertical"
MDToolbar:
id: title
title: "Redmine logTimer"
right_action_items: [["clock", lambda x: app.callback_2()]]
MDFlatButton:
id: project_selection
text: "Select Project"
pos_hint: {'center_x': .5, 'center_y': .5}
on_release: root.show_confirmation_dialog()

Answer 1

You can achieve that as follows,
First create a prop. say, selected_project in HomeWindow as,
class HomeWindow(Screen):
dialog = None
selected_project = StringProperty()
Now set its value in method set_icon as,
def set_icon(self, instance_check):
...
app = MDApp.get_running_app() # Access the running app instance.
home_screen = app.root.get_screen("home") # Access required screen.
home_screen.selected_project = self.text # Now set value.
...
Now it's time to set this value in method project_selected,
def project_selected(self, *args, **kwargs):
self.ids.project_selection.text = self.selected_project