ObservableBooleanAdapter.kt

@Composable
fun ObservableBoolean.observeAsState(): State<Boolean> {
    val value = get()
    val state = remember { mutableStateOf(value) }

    DisposableEffect(state) {
        val callback: Observable.OnPropertyChangedCallback = object : Observable.OnPropertyChangedCallback() {
            override fun onPropertyChanged(sender: Observable?, propertyId: Int) {
                if (sender == null && sender !is ObservableBoolean) return
                state.value = (sender as ObservableBoolean).get()
            }
        }
        addOnPropertyChangedCallback(callback)
        onDispose {
            removeOnPropertyChangedCallback(callback)
        }
    }
    return state
}