How to pass params when switch_mode(create screen object)?

[Yurri-huang]

I have two screen class types, named 'base' and 'edit','edit' needs to get some interface parameters from 'base' and dynamically generate interface 'edit', I try to use switch_mode and push_screen it seems that I can only pass the class type of 'base', and I can't get the instantiated object.

What should I do if I want to generate and toggle 'edit' via the argument of 'base'?

[TomJGooding]

Sorry but I don't understand your question. Perhap a MRE (short example) would help demonstrate what you mean?

[Yurri-huang]

class Edit(Screen):
    def __init__(self, data:str):
        self.data = data
    def on_mount(self):
        // use self.data do anything

MODES = {
"base": Base,
"edit": Edit
}

class Edit __init__ method need param: data, when i call swith_mode("edit"), it's not support
How to pass param: data?

[TomJGooding]

I think the problem might be that you forgot to call `super().init(). Here's a quick example based on the code above which seems to work okay?

from textual.app import App, ComposeResult
from textual.widgets import Placeholder, Footer
from textual.screen import Screen


class Edit(Screen):
    def __init__(self, data: str):
        self.data = data
        super().__init__()

    def compose(self) -> ComposeResult:
        yield Placeholder(self.data)
        yield Footer()


class ModesApp(App):
    BINDINGS = [
        ("f", "switch_mode('foo')", "Foo"),
        ("b", "switch_mode('bar')", "Bar"),
        ("z", "switch_mode('baz')", "Baz"),
    ]

    MODES = {
        "foo": Edit("Foo"),
        "bar": Edit("Bar"),
        "baz": Edit("Baz"),
    }

    def on_mount(self) -> None:
        self.switch_mode("foo")


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