Updating SelectionList Selected Icon (X) to an Emoji

[lorddaren]

I have been searching the source code and found that there is a ToggleButton.BUTTON_INNER but am not sure how to override it so that I can use my own Emoji to show the selected state.

I saw in another discussion (or issue) that someone had actually customized it so I believe it is possible. Thoughts?

[TomJGooding]

Here's a simple example, but using a symbol rather than emoji as it needs to change color:

from textual.app import App, ComposeResult
from textual.widgets import SelectionList
from textual.widgets._toggle_button import ToggleButton

ToggleButton.BUTTON_INNER = "♥"


class ExampleApp(App[None]):
    def compose(self) -> ComposeResult:
        yield SelectionList[int](*((f"Selection {n}", n) for n in range(10)))


if __name__ == "__main__":
    app = ExampleApp()
    app.run()

[lorddaren]

That worked! Follow up question. Does that need to be changed before the app is run? I tried to override it in the the subclass that I created but it didn't seem to work.

Thanks again for the quick response.

[TomJGooding]

Sorry but I'm not sure I understand what you mean. I think ToggleButton.BUTTON_INNER behaves like any other class variable in Python?