demo-mvvm/com.grarcht.shuttle.demo.mvvm.viewmodel/FirstViewModel

FirstViewModel

The MVVM androidx.lifecycle.ViewModel for the first screen in the MVVM demo. Delegates image loading to a com.grarcht.shuttle.demo.core.viewmodel.DefaultImageLoader and emits one-shot NavigationEvents when the user requests navigation.

Constructors

FirstViewModel

constructor()

Properties

navigationEvent

val navigationEvent: SharedFlow<NavigationEvent>

uiState

val uiState: StateFlow<IOResult>

Functions

addCloseable

open fun addCloseable(closeable: AutoCloseable)

fun addCloseable(key: String, closeable: AutoCloseable)

currentImageModel

fun currentImageModel(): ImageModel?

Returns the ImageModel from the last successful load, or null if loading has not completed successfully.

getCloseable

fun <T : AutoCloseable> getCloseable(key: String): T?

loadImage

fun loadImage(resources: Resources, @RawRes imageId: Int)

Loads the image from imageId in resources. Repeated calls after a successful load are ignored.

onNavigateNormally

fun onNavigateNormally()

Emits a NavigationEvent.Normally event for the view to execute, carrying the currently loaded image model. Does nothing if no image has been loaded yet.

onNavigateWithShuttle

fun onNavigateWithShuttle()

Emits a NavigationEvent.WithShuttle event for the view to execute, carrying the currently loaded image model. Does nothing if no image has been loaded yet.