crystal.react.hooks.UseStateViewWithReuse.scala Maven / Gradle / Ivy
// Copyright (c) 2016-2023 Association of Universities for Research in Astronomy, Inc. (AURA)
// For license information see LICENSE or https://opensource.org/licenses/BSD-3-Clause
package crystal.react.hooks
import crystal.react.*
import crystal.react.ReuseView
import japgolly.scalajs.react.*
import japgolly.scalajs.react.hooks.CustomHook
import scala.reflect.ClassTag
object UseStateViewWithReuse {
def hook[A: ClassTag: Reusability]: CustomHook[A, ReuseView[A]] =
CustomHook[A]
.useStateViewBy(initialValue => initialValue)
.buildReturning((_, view) => view.reuseByValue)
object HooksApiExt {
sealed class Primary[Ctx, Step <: HooksApi.AbstractStep](api: HooksApi.Primary[Ctx, Step]) {
/** Creates component state as a View */
final def useStateViewWithReuse[A: ClassTag: Reusability](initialValue: => A)(using
step: Step
): step.Next[ReuseView[A]] =
useStateViewWithReuseBy(_ => initialValue)
/** Creates component state as a View */
final def useStateViewWithReuseBy[A: ClassTag: Reusability](initialValue: Ctx => A)(using
step: Step
): step.Next[ReuseView[A]] =
api.customBy { ctx =>
val hookInstance = hook[A]
hookInstance(initialValue(ctx))
}
}
final class Secondary[Ctx, CtxFn[_], Step <: HooksApi.SubsequentStep[Ctx, CtxFn]](
api: HooksApi.Secondary[Ctx, CtxFn, Step]
) extends Primary[Ctx, Step](api) {
/** Creates component state as a View */
def useStateViewWithReuseBy[A: ClassTag: Reusability](initialValue: CtxFn[A])(using
step: Step
): step.Next[ReuseView[A]] =
useStateViewWithReuseBy(step.squash(initialValue)(_))
}
}
protected trait HooksApiExt {
import HooksApiExt._
implicit def hooksExtStateViewWithReuse1[Ctx, Step <: HooksApi.AbstractStep](
api: HooksApi.Primary[Ctx, Step]
): Primary[Ctx, Step] =
new Primary(api)
implicit def hooksExtStateViewWithReuse2[Ctx, CtxFn[_], Step <: HooksApi.SubsequentStep[Ctx,
CtxFn
]](
api: HooksApi.Secondary[Ctx, CtxFn, Step]
): Secondary[Ctx, CtxFn, Step] =
new Secondary(api)
}
object syntax extends HooksApiExt
}