Is that possible to put action, message handler, and other functions in own file?

[Tim-Cao]

Imagine there are lots of action, message handler, and other functions in App file. It's hard to read and maintain.
Is that possible only keep widget compose in App file?
For example,

    def compose(self) -> ComposeResult:
        yield Sidebar(classes="-hidden")
        yield Header()
        with Horizontal(id="main-content"):
            yield ListView(
                ListItem(Nav_Item("Forward Failure PR"), id="nav-1"),
                ListItem(Nav_Item("Create PR and Forward"), id="nav-2"),
                ListItem(Nav_Item("Create TF Ticket"), id="nav-3"),
                ListItem(Nav_Item("Write Comments"), id="nav-4"),
                ListItem(Nav_Item("Write Description"), id="nav-5"),
                ListItem(Nav_Item("Trigger Gauntlet"), id="nav-6"),
                ListItem(Nav_Item("Create Issue"), id="nav-7"),
                ListItem(Nav_Item("RCA"), id="nav-8"),
            )


class Output(RichLog):
    @on(events.Print)
    def on_print(self, event: events.Print) -> None:
        if event.text.strip():
            self.write(event.text)


app = ScriptApp()

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

    def on_button_pressed(self, event: Button.Pressed) -> None:
        if event.button.id == "button-1":
            self.forward_failure_pull_request()
        elif event.button.id == "button-2":
            self.create_pr_and_forward()
        elif event.button.id == "button-3":
            self.create_test_fix_ticket()
        elif event.button.id == "button-4":
            self.write_comments()
        elif event.button.id == "button-5":
            self.write_description()
        elif event.button.id == "button-6":
            self.trigger_gauntlet()
        elif event.button.id == "button-7":
            self.create_issue()
        elif event.button.id == "button-8":
            self.conversion()

    def on_list_view_selected(self, event: ListView.Selected) -> None:
        self.query_one(ContentSwitcher).current = event.item.id

    @work(exclusive=True, thread=True)
    def action_open_credentials(self) -> None:
        self.query_one(RichLog).clear()
        self.query_one(RichLog).begin_capture_print()

        credentials.open_credentials()

    @work(exclusive=True, thread=True)
    def action_sync_components(self) -> None:
        self.query_one(RichLog).clear()
        self.query_one(RichLog).begin_capture_print()

        jira_components_sync.main()

    @work(exclusive=True, thread=True)
    def action_toggle_sidebar(self) -> None:
        sidebar = self.query_one(Sidebar)
        self.set_focus(None)
        if sidebar.has_class("-hidden"):
            sidebar.remove_class("-hidden")
        else:
            if sidebar.query("*:focus"):
                self.screen.set_focus(None)
            sidebar.add_class("-hidden")

[TomJGooding]

It looks like you might have accidentally created this duplicate of #3674?

I'm not sure I fully understand your question - how would you use methods from a class outside the class?

Depending on how your application is structured, you might be able to put some of this logic in custom widgets rather than handling everything in your App. You might find the Coordinating widgets guide in the docs useful here.

[Tim-Cao]

It looks like you might have accidentally created this duplicate of #3674?

It might be network issue.

[Tim-Cao]

Coordinating widgets are still in the same file with App, right?

[TomJGooding]

Right, but my general point was that...

Depending on how your application is structured, you might be able to put some of this logic in custom widgets rather than handling everything in your App.

Notice that the ByteInputApp in the final example only contains a compose method. The compound widgets (where the logic happens) could be in other files and then imported.

Perhaps this isn't possible with your application structure, but I hoped this would help give you some ideas.

[Tim-Cao]

I see. Thanks