litho-widget/com.facebook.litho.widget/Binder

Binder

This binder class is used to asynchronously layout Components given a list of Component and attaching them to a ViewGroup through the bind method.

Inheritors

RecyclerBinder

Functions

bind

abstract fun bind(view: V)

Bind this Binder to a View.

canMeasure

abstract fun canMeasure(): Boolean

Only for horizontally scrolling layouts: return true if height is not known when measuring the view and the first item will be measured to determine the height.

detach

abstract fun detach()

Detach items under the hood.

getComponentAt

abstract fun getComponentAt(position: Int): ComponentTree

Returns the component at the given position in the binder.

isWrapContent

abstract fun isWrapContent(): Boolean

Return true if wrap content is enabled, false otherwise.

measure

abstract fun measure(outSize: Size, widthSpec: Int, heightSpec: Int, reMeasureEventHandler: EventHandler<ReMeasureEvent>)

Measure the content of this Binder.

mount

abstract fun mount(view: V)

Call this method before the View is mounted, i.e.

setCanMeasure

abstract fun setCanMeasure(canMeasure: Boolean)

Only for horizontally scrolling layouts: set to true if height is not known when measuring the view and the first item will need to be measured to determine the height of the view.

setSize

abstract fun setSize(width: Int, height: Int)

Set the width and height of the View that will be passed to the subsequent mount, bind and unmount calls.

setViewportChangedListener

abstract fun setViewportChangedListener(@Nullable viewportChangedListener: ViewportInfo.ViewportChanged)

Bind a ViewportInfo.ViewportChanged listener to this Binder.

unbind

abstract fun unbind(view: V)

Call this method when the view is unbound.

unmount

abstract fun unmount(view: V)

Call this method when the view is unmounted.