core/de.peekandpoke.kraft.components/PureComponent

PureComponent

abstract class PureComponent(ctx: NoProps) : Component<Any?>

Base component that has no props and no state

Constructors

PureComponent

fun PureComponent(ctx: NoProps)

Functions

createRef

fun <C : Component<*>> createRef(): ComponentRef.Tracker<C>

invoke

operator fun <T> Stream<T>.invoke(handler: (T) -> Unit): () -> Unit

Subscribes to a Stream.

render

abstract fun VDom.render()

Every component needs to implement this method

shouldRedraw

open fun shouldRedraw(nextProps: Any?): Boolean

Returns 'true' when the component should redraw.

stream

fun <T> stream( initial: T, config: Stream<T>.() -> Stream<T>? = null, handler: (T) -> Unit = {}): ComponentStreamProperty<T>

Creates a property that is backed by a StreamSource

subscribingTo

fun <T> subscribingTo(stream: Stream<T>, onNext: (T) -> Unit? = null): ReadOnlyProperty<Any?, T>

Creates a property that is subscribed to a stream.

triggerRedraw

fun triggerRedraw()

Triggers a redraw

value

fun <T> value(initial: T, onChange: (T) -> Unit? = null): ComponentStateProperty<T>

Creates a read write property for the components state.

Properties

attributes

val attributes: MutableTypedAttributes

The attributes of the component

autoDomKey

val autoDomKey: String

An automatically generated unique dom key for the component instance.

ctx

val ctx: Ctx<Any?>

dom

val dom: HTMLElement?

The Dom node to which the component is rendered

lifecycle

val lifecycle: Component.LifeCycle<Any?>

The life-cycle LifeCycle that the component exposes

parent

val parent: Component<*>?

Accessor for the parent component

props

val props: Any?

Public getter for the Props