korolev.internal.EventRegistry.scala Maven / Gradle / Ivy
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/*
* Copyright 2017-2018 Aleksey Fomkin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package korolev.internal
import korolev.Async
import scala.collection.mutable
/**
* Save information about what type of events are already
* listening on the client
*/
final class EventRegistry[F[_]: Async](frontend: ClientSideApi[F]) {
private val knownEventTypes = mutable.Set('submit)
/**
* Notifies client side that he should listen
* all events of the type. If event already listening
* on the client side, client will be not notified again.
*/
def registerEventType(`type`: Symbol): Unit = knownEventTypes.synchronized {
if (!knownEventTypes.contains(`type`)) {
knownEventTypes += `type`
frontend.listenEvent(`type`.name, preventDefault = false)
}
}
}