[Solved] How to know what the currently selected button is in a screen from python code?

[henvu50]

How can you check to see which button in a screen has their selected state set to true, from python code?

Code: Select all

init python:
    def SomeFunc_ReturnCurrentSelectedButton(Screen)
        getCurrentlySelectedButton(Screen)

screen 50():
    ....
    textbutton80
    textbutton81 (CURRENTLY SELECTED)
    textbutton82    
.....

[Ocelot]

Screen widgets are Views. They are not intended to have data extracted from it. While there are multiple design patterns in existence, Model almost universally does not request data from Views. Ultimately, Views should decide their state based on data contained in the Model. I.e. your code should control state of the buttons, not other way around.
https://en.wikipedia.org/wiki/Model%E2% ... controller

If you want to know View state in Model that means something is terrible wrong with your architecture. I would suggest to reconsider your approach. As for your question, this code works, but it is fragile, because it accesses screen internals.

Code: Select all

screen TST_SCR():
    vbox:
        id "bvox"
        textbutton "BTN1":
            action SetVariable("iss", 1)
        textbutton "BTN2":
            action SetVariable("iss", 2)

default iss = 0

label start:
    show screen TST_SCR
    '...'
    '..'
    python:
        is_button_selected = ["selected" in button.role for button in renpy.get_widget(id="bvox", screen="TST_SCR", layer="screens").children]
    '[iss], [is_button_selected]'
    return

You will have to check list for selected buttons, because several buttons can be selected. Or no one.