/*
* Sone - ListNotification.kt - Copyright © 2010–2020 David Roden
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package net.pterodactylus.sone.notify
import net.pterodactylus.util.notify.*
import net.pterodactylus.util.template.*
import java.lang.System.*
import java.util.concurrent.*
/**
* Notification that maintains a list of elements.
*
* @param
* The type of the items
*/
class ListNotification : TemplateNotification {
private val key: String
private val realElements = CopyOnWriteArrayList()
val elements: List get() = realElements.toList()
val isEmpty
get() = elements.isEmpty()
@JvmOverloads
constructor(id: String, key: String, template: Template, dismissable: Boolean = true) : super(id, currentTimeMillis(), currentTimeMillis(), dismissable, template) {
this.key = key
template.initialContext.set(key, realElements)
}
constructor(listNotification: ListNotification) : super(listNotification.id, listNotification.createdTime, listNotification.lastUpdatedTime, listNotification.isDismissable, Template()) {
this.key = listNotification.key
template.add(listNotification.template)
template.initialContext.set(key, realElements)
}
fun setElements(elements: Collection) {
realElements.clear()
realElements.addAll(elements.distinct())
touch()
}
fun add(element: T) {
if (element !in realElements) {
realElements.add(element)
touch()
}
}
fun remove(element: T) {
while (realElements.remove(element)) {
/* do nothing, just remove all instances of the element. */
}
if (realElements.isEmpty()) {
dismiss()
}
touch()
}
override fun dismiss() {
super.dismiss()
realElements.clear()
}
override fun hashCode() =
realElements.fold(super.hashCode()) { hash, element -> hash xor element.hashCode() }
override fun equals(other: Any?): Boolean {
if (other !is ListNotification<*>) {
return false
}
val listNotification = other as ListNotification<*>?
if (!super.equals(listNotification)) {
return false
}
return (key == listNotification.key) && (realElements == listNotification.realElements)
}
}