Event-observer-state/br.com.arch.toolkit.eventObserver.state/FallbackValue

FallbackValue

class FallbackValue<T : Any, R : T?> : ReadWriteProperty<Any?, R> (source)

Writable saved property with a fallback applied only to reads and observation. Assignments are saved normally; reading a fallback never writes it to the handle. Created by StateValue.Companion.required or StateValue.Companion.default.

Functions

flow

fun flow(): StateFlow<R>

Stable projection, reflecting defaults consistently with delegated reads.

getValue

open operator override fun getValue(thisRef: Any?, property: KProperty<*>): R

Reads the saved value, applying the fallback without persisting it.

provideDelegate

operator fun provideDelegate(ref: Any?, property: KProperty<*>): FallbackValue<T, R>

Binds the underlying property name before observing an implicit key.

setValue

open operator override fun setValue(thisRef: Any?, property: KProperty<*>, value: R)

Saves the assigned value through the underlying property.