Lifecycle-aware view-model

WithIdleViewModel.kt

class WithIdleViewModel : ViewModel() {
    /**
     * Creates initial state for state-machine
     * You could process a deep-link here or restore from a saved state
     */
    private fun initStateMachine(): CommonMachineState<SomeGesture, SomeUiState> = InitialState()

    /**
     * State-machine instance
     */
    private val stateMachine = FlowStateMachine(::initStateMachine)

    /**
     * UI State
     */
    val state: SharedFlow<SomeUiState> = stateMachine.uiState

    init {
        // Subscribes to active subscribers count and updates state machine with corresponding gestures
        stateMachine.mapUiSubscriptions(
          viewModelScope,
          onActive = { SomeGesture.OnActive },
          onInactive = { SomeGesture.OnInactive }
        )
    }
}