X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Fnotify%2FListNotification.kt;fp=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Fnotify%2FListNotification.kt;h=9ee328ed2830c730d70e64c2b4feef5558dd3cb1;hp=0000000000000000000000000000000000000000;hb=d50730f6a330439e0e7ef97ca9329dffe72d5640;hpb=97fe04482ebb8a08e43294acde041c2975cbd8ee

diff --git a/src/main/kotlin/net/pterodactylus/sone/notify/ListNotification.kt b/src/main/kotlin/net/pterodactylus/sone/notify/ListNotification.kt
new file mode 100644
index 0000000..9ee328e
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+++ b/src/main/kotlin/net/pterodactylus/sone/notify/ListNotification.kt
@@ -0,0 +1,95 @@
+/*
+ * Sone - ListNotification.java - Copyright © 2010–2019 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 <http://www.gnu.org/licenses/>.
+ */
+
+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 <T>
+ * The type of the items
+ */
+class ListNotification<T> : TemplateNotification {
+
+	private val key: String
+	private val realElements = CopyOnWriteArrayList<T>()
+
+	val elements: List<T> 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<T>) : 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<T>) {
+		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)
+	}
+
+}