From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Isaac Moore <rmsy@me.com>
Date: Tue, 19 Apr 2016 14:09:31 -0500
Subject: [PATCH] Implement PlayerLocaleChangeEvent


diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 7eb56761d9073156b30d4c981dcd4b4ba646f0bc..ab89e508ee8b8142fb7c0b5101b0b0e157a68f35 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -1567,20 +1567,28 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
         return s;
     }
 
-    public String locale = "en_us"; // CraftBukkit - add, lowercase
+    public String locale = null; // CraftBukkit - lowercase // Paper - default to null
     public void a(PacketPlayInSettings packetplayinsettings) {
         // CraftBukkit start
         if (getMainHand() != packetplayinsettings.getMainHand()) {
             PlayerChangedMainHandEvent event = new PlayerChangedMainHandEvent(getBukkitEntity(), getMainHand() == EnumMainHand.LEFT ? MainHand.LEFT : MainHand.RIGHT);
             this.server.server.getPluginManager().callEvent(event);
         }
-        if (!this.locale.equals(packetplayinsettings.locale)) {
+        if (this.locale == null || !this.locale.equals(packetplayinsettings.locale)) { // Paper - check for null
             PlayerLocaleChangeEvent event = new PlayerLocaleChangeEvent(getBukkitEntity(), packetplayinsettings.locale);
             this.server.server.getPluginManager().callEvent(event);
         }
         this.locale = packetplayinsettings.locale;
         this.clientViewDistance = packetplayinsettings.viewDistance;
         // CraftBukkit end
+        // Paper start - add PlayerLocaleChangeEvent
+        // Since the field is initialized to null, this event should always fire the first time the packet is received
+        String oldLocale = this.locale;
+        this.locale = packetplayinsettings.locale;
+        if (!this.locale.equals(oldLocale)) {
+            new com.destroystokyo.paper.event.player.PlayerLocaleChangeEvent(this.getBukkitEntity(), oldLocale, this.locale).callEvent();
+        }
+        // Paper end
         this.cf = packetplayinsettings.d();
         this.cg = packetplayinsettings.e();
         this.getDataWatcher().set(EntityPlayer.bp, (byte) packetplayinsettings.f());
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 051ba43e9ed9afe77b74ffbede44def35601afc9..1a7b9325108342cfbb781665ff1bf3ee3056bc9b 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1776,8 +1776,10 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public String getLocale() {
-        return getHandle().locale;
-
+        // Paper start - Locale change event
+        final String locale = getHandle().locale;
+        return locale != null ? locale : "en_us";
+        // Paper end
     }
 
     // Paper start