From b91f0fe488ba0f9d3030132968e2083f228a3245 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Wed, 20 Jun 2012 23:15:31 -0500
Subject: [PATCH] Implement plugin channel events. Addresses BUKKIT-1844

By: Wesley Wolfe <weswolf@aol.com>
---
 .../org/bukkit/craftbukkit/entity/CraftPlayer.java     | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 3291608f32..b3da75ef54 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -39,7 +39,9 @@ import org.bukkit.craftbukkit.map.RenderData;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.player.PlayerGameModeChangeEvent;
+import org.bukkit.event.player.PlayerRegisterChannelEvent;
 import org.bukkit.event.player.PlayerTeleportEvent;
+import org.bukkit.event.player.PlayerUnregisterChannelEvent;
 import org.bukkit.inventory.InventoryView.Property;
 import org.bukkit.map.MapView;
 import org.bukkit.metadata.MetadataValue;
@@ -744,11 +746,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
 
     public void addChannel(String channel) {
-        channels.add(channel);
+        if (channels.add(channel)) {
+            server.getPluginManager().callEvent(new PlayerRegisterChannelEvent(this, channel));
+        }
     }
 
     public void removeChannel(String channel) {
-        channels.remove(channel);
+        if (channels.remove(channel)) {
+            server.getPluginManager().callEvent(new PlayerUnregisterChannelEvent(this, channel));
+        }
     }
 
     public Set<String> getListeningPluginChannels() {