rd-core/com.jetbrains.rd.util.reactive/OptProperty

OptProperty

open class OptProperty<T : Any> : IOptProperty<T>

Constructors

OptProperty

fun <T : Any> OptProperty(defaultValue: T)

OptProperty

fun OptProperty()

Functions

advise

open override fun advise(lifetime: Lifetime, handler: (T) -> Unit)

Adds an event subscription. Every time an event occurs, the handler is called, receiving an instance of the event. The subscription is removed when the given lifetime expires.

set

open override fun set(newValue: T)

Sets the property to the given value.

setIfEmpty

fun setIfEmpty(newValue: T): Boolean

view

open override fun view(lifetime: Lifetime, handler: (Lifetime, T) -> Unit)

Adds a subscription to changes of the contents of the object.

Properties

change

open override val change: ISource<T>

changing

open val changing: Boolean

valueOrNull

open override val valueOrNull: T?

Returns the current value of the property, or null if the property has not been initialized.