core/de.peekandpoke.kraft.components/Component

Component

abstract class Component<PROPS>(val ctx: Ctx<PROPS>)

Base class of all Components

Constructors

fun <PROPS> Component(ctx: Ctx<PROPS>)

Types

object Companion

class LifeCycle<PROPS>

Lifecycle hooks for components

Functions

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

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

Subscribes to a Stream.

abstract fun VDom.render()

Every component needs to implement this method

open fun shouldRedraw(nextProps: PROPS): Boolean

Returns 'true' when the component should redraw.

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

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

Creates a property that is subscribed to a stream.

fun triggerRedraw()

Triggers a redraw

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

Creates a read write property for the components state.

Properties

val attributes: MutableTypedAttributes

The attributes of the component

val autoDomKey: String

An automatically generated unique dom key for the component instance.

val ctx: Ctx<PROPS>

val dom: HTMLElement?

The Dom node to which the component is rendered

val lifecycle: Component.LifeCycle<PROPS>

The life-cycle LifeCycle that the component exposes

val parent: Component<*>?

Accessor for the parent component

val props: PROPS

Public getter for the Props

Inheritors

DndDragHandleComponent

DndDropTargetComponent

FormFieldComponent

GenericFormField

ListFieldComponent

RouterComponent

CollapsableComponent

ElementsPerPage

Extensions

fun <T, C> Component<C>.dataLoader(load: () -> Flow<T>): DataLoader<T>

fun Component<*>.formController(): FormController

val Component<*>.messages: MessagesHandler

Get the MessagesHandler for the Component

inline fun <M : Message<*>> Component<*>.onMessage(noinline handler: (M) -> Unit)

Listens for a Message of the given type M.

pagedSearchFilter

fun <C> Component<C>.pagedSearchFilter(router: Router, onChange: (PagedSearchFilter) -> Unit? = null): ReadWriteProperty<Component<C>, PagedSearchFilter>

fun <M : Message<*>> Component<*>.sendMessage(message: M)

Send the given message.

fun <C> Component<C>.urlParam( router: Router, name: String, default: Int, onChange: (Int) -> Unit? = null): ReadWriteProperty<Component<C>, Int>

fun <C> Component<C>.urlParam( router: Router, name: String, default: String, onChange: (String) -> Unit? = null): ReadWriteProperty<Component<C>, String>

fun <C, T> Component<C>.urlParams( router: Router, fromParams: (Map<String, String>) -> T, toParams: (T) -> Map<String, Any?>, onChange: (T) -> Unit? = null): ReadWriteProperty<Component<C>, T>