Issues with switchable items in MDDropdownMenu

[Niehztog]

Hello. I am currently working on implementing an MDDropdownMenu which opens when the user clicks the right action item on the MDToolbar. Beside simple label items as they are shown in the kitchen-sink demo I would like extended items which shoe an MDSwitch next to them.

Here is my code so far (Kivy Version 1.11.1, KivyMD latest master from github):

main.py

from kivymd.app import MDApp
from kivymd.uix.menu import MDMenuItem


class MySwitchableMenuItem(MDMenuItem):

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

    def on_touch_up(self, instance):
        self.active = False if self.children[0].active else True


class MainApp(MDApp):

    def __init__(self, **kwargs):
        self.title = "KivyMD MDDropdownMenu Demo"
        super().__init__(**kwargs)
        self.menu_items = [
            {"viewclass": "MySwitchableMenuItem",
             "text": "MyItem1", "active": False},
            {"viewclass": "MySwitchableMenuItem",
             "text": "MyItem2", "active": True}
        ]

    def callback_switch_triggered(self, label, active):
        print("callback_switch_triggered: " + label)
        if label == "MyItem1":
            if active:
                self.menu_items[0]["active"] = True
            else:
                self.menu_items[0]["active"] = False
        elif label == "MyItem2":
            if active:
                self.menu_items[1]["active"] = True
            else:
                self.menu_items[1]["active"] = False


if __name__ == "__main__":
    MainApp().run()

main.kv

#:kivy 1.11.1
#:import MDDropdownMenu kivymd.uix.menu.MDDropdownMenu
#:import MDToolbar kivymd.uix.toolbar.MDToolbar

<MySwitchableMenuItem>
    active: False
    MDSwitch:
        size_hint: None, None
        size: dp(36), dp(48)
        pos_hint: {'center_x': .3, 'center_y': .4}
        active: self.parent.active
        on_active:
            app.callback_switch_triggered(self.parent.text, self.active)

BoxLayout:
    orientation: 'vertical'

    MDToolbar:
        id: toolbar
        title: app.title
        pos_hint: {"top": 1}
        right_action_items: [['dots-vertical', lambda instance: MDDropdownMenu(items=app.menu_items, width_mult=3, ver_growth='down', hor_growth='left', pos=instance.pos).open(instance)]]

    Widget:

There are two problems with my code:

1. When opening the Dropdown menu, the callback method for both menu entries is called 57 times! However it should only be executed when the state of the switch changes
2. When clicking on the menu item label to change the state of the switch, the other switch is affected aswell (clicking directly on the switch "thumb" the state changes correctly)

How can I change my code so that the callback is only executed when the state of the switch changes and that clicking the menu item label only the corresponding switch is affected?

[Clash Real]

Hi!, i have the same idea, did you figure out how to do this?

вторник, 11 февраля 2020 г. в 00:56:10 UTC+3, Niehztog: