:thinking_face: What’s actually happening inside `::exitApplication` ? `System.exit(0)` or something...

# compose-desktop

[theapache64]

🤔 What’s actually happening inside ::exitApplication ? System.exit(0) or something special? Just curious 😬

[CLOVIS]

If you're in IntelliJ, you can press CTRL+B and find out 👍

[theapache64]

Ctrl/Cmd + B goes to the interface, not to the implementation. but I’ve looked in the ApplicationScope and found this 😄

if am not wrong, it simply update a boolean state to false, and when recomposed, we’re not rendering the content . If we’re not rendering anything, the recomposer will end the app ? I don’t get that part actually 🤔

[theapache64]

message has been deleted

[Kirill Grouchnikov]

I'm right in that area right now in Aurora. I think this is causing the window to not get opened, or rather, disposed. And then, when the last window is disposed, the whole app exits automatically.

[Igor Demin]

When we call recomposer.close() we actually don't close or cancel anything. We just tell Recomposer, that when it has no active coroutines (usually launched via LaunchedEffect), it should shutdown itself, and no longer do any recompositions. When it will shutdown, join will unblock the main coroutine.

If we use Window, it:
1. creates its own LaunchedEffect to keep Recomposer alive.
2. creates a native window on composition init, disposes the native window on composition dispose
When we call exitApplication (i.e. set isOpen = false) we dispose all compositions, and so cancel all `LaunchedEffect`'s, and dispose all native windows, opened inside application

[theapache64]

@Igor Demin Aaaah.. makes sense. In that case, IMO, the name close doesn’t suite here, isn’t it ? or I don’t knw 😄 maybe closeWhenNothingToCompose() 😄 and this method should be a suspend method (so we can remove join from there) and that make becomes more readable i guess… just a wild thought 😬

[Igor Demin]

Yeah, naming is hard...

[Kirill Grouchnikov]

https://github.com/JetBrains/compose-jb/issues/872 is the context for my exploration of the application implementation details