architecture/com.splendo.kaluga.architecture.observable/DefaultObservable

DefaultObservable

interface DefaultObservable<R : T?, T> : BasicObservable<R, T?, ObservableOptional.Value<R>> , DefaultInitialized<R, T?>

A BasicObservable that is DefaultInitialized

Parameters

T

the type of value to expect.

R

the type of result to expect. Must be a subclass of T.

Inheritors

BaseDefaultObservable

Properties

abstract val current: R

The current value of R

abstract val currentOrNull: T?

The current value T or null being observed

abstract val defaultValue: ObservableOptional.Value<R>

The default Value of R. Can be used in case Nothing is Initial.initialValue

abstract val initialValue: ObservableOptional<T?>

The initial ObservableOptional value of T.

expect abstract val stateFlow: StateFlow<R>

StateFlow that expresses the content from the observable.

expect abstract val valueDelegate: ReadOnlyProperty<Any?, R>

A ReadOnlyProperty of T

Functions

abstract operator fun getValue(thisRef: Any?, property: KProperty<*>): ObservableOptional.Value<R>

abstract fun observe(onNext: (R?) -> Unit): Disposable

Creates an observation that calls onNext each time a new value is observed until the resulting Disposable is disposed

observeInitialized

abstract fun observeInitialized(onNext: (R) -> Unit): Disposable

observeNotNullOnLifecycle

fun <T> WithState<T?>.observeNotNullOnLifecycle(lifecycleOwner: LifecycleOwner, filter: suspend (T) -> Boolean = { true }, onNext: (T) -> Unit): Job

Observes WithState of a nullable value on the lifecycle of a LifecycleOwner

observeOnLifecycle

fun <T> WithState<T>.observeOnLifecycle(lifecycleOwner: LifecycleOwner, filter: suspend (T) -> Boolean = { true }, onNext: (T) -> Unit): Job

Observes WithState on the lifecycle of a LifecycleOwner

fun <T, R> WithState<T>.observeOnLifecycle(lifecycleOwner: LifecycleOwner, filter: suspend (T) -> Boolean = { true }, transform: suspend (T) -> R, onNext: (R) -> Unit): Job

Observes WithState on the lifecycle of a LifecycleOwner by transforming the observed value.

toDefaultObservable

fun <R : T, T> ReadOnlyProperty<Any?, T?>.toDefaultObservable(defaultValue: R): ReadOnlyPropertyDefaultObservable<R, T?>

Converts a ReadOnlyProperty into a ReadOnlyPropertyDefaultObservable

toInitializedObservable

fun <T> ReadOnlyProperty<Any?, T>.toInitializedObservable(): ReadOnlyPropertyInitializedObservable<T>

Converts a ReadOnlyProperty into a ReadOnlyPropertyInitializedObservable