From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 3 Jul 2018 21:56:23 -0400
Subject: [PATCH] InventoryCloseEvent Reason API

Allows you to determine why an inventory was closed, enabling plugin developers
to "confirm" things based on if it was player triggered close or not.

diff --git a/src/main/java/net/minecraft/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index cbffebfe323ff4ddec792c49ebc3391fc9ac35ac..73a33eff97d26e5b3542d787344013e18e52db68 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -155,7 +155,7 @@ public abstract class EntityHuman extends EntityLiving {
         this.et();
         super.tick();
         if (!this.world.isClientSide && this.activeContainer != null && !this.activeContainer.canUse(this)) {
-            this.closeInventory();
+            this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.CANT_USE); // Paper
             this.activeContainer = this.defaultContainer;
         }
 
@@ -350,6 +350,13 @@ public abstract class EntityHuman extends EntityLiving {
         return 20;
     }
 
+    // Paper start - unused code, but to keep signatures aligned
+    public void closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason reason) {
+        closeInventory();
+        this.activeContainer = this.defaultContainer;
+    }
+    // Paper end
+
     public void closeInventory() {
         this.activeContainer = this.defaultContainer;
     }
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 26f81c1af1dda7d0a78ca5815bfaf825ba913efd..415f0d74748484db0a211187a74b5d0b51ffe1cd 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -415,7 +415,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
         }
         // Paper end
         if (!this.world.isClientSide && !this.activeContainer.canUse(this)) {
-            this.closeInventory();
+            this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.CANT_USE); // Paper
             this.activeContainer = this.defaultContainer;
         }
 
@@ -589,7 +589,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
 
         // SPIGOT-943 - only call if they have an inventory open
         if (this.activeContainer != this.defaultContainer) {
-            this.closeInventory();
+            this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.DEATH); // Paper
         }
 
         String deathMessage = event.getDeathMessage();
@@ -1142,7 +1142,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             return OptionalInt.empty();
         } else {
             if (this.activeContainer != this.defaultContainer) {
-                this.closeInventory();
+                this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.OPEN_NEW); // Paper
             }
 
             this.nextContainerCounter();
@@ -1202,7 +1202,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
         }
         // CraftBukkit end
         if (this.activeContainer != this.defaultContainer) {
-            this.closeInventory();
+            this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.OPEN_NEW); // Paper
         }
 
         // this.nextContainerCounter(); // CraftBukkit - moved up
@@ -1266,7 +1266,12 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
 
     @Override
     public void closeInventory() {
-        CraftEventFactory.handleInventoryCloseEvent(this); // CraftBukkit
+        // Paper start
+        closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNKNOWN);
+    }
+    public void closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason reason) {
+        CraftEventFactory.handleInventoryCloseEvent(this, reason); // CraftBukkit
+        // Paper end
         this.playerConnection.sendPacket(new PacketPlayOutCloseWindow(this.activeContainer.windowId));
         this.o();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 7dd7289941253991d0a2aa22f9b058c116c14e82..577deb210f6d95b7502905f6af16e2e946edd8e2 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -43,6 +43,7 @@ import org.bukkit.event.inventory.ClickType;
 import org.bukkit.event.inventory.CraftItemEvent;
 import org.bukkit.event.inventory.InventoryAction;
 import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryCloseEvent; // Paper
 import org.bukkit.event.inventory.InventoryCreativeEvent;
 import org.bukkit.event.inventory.InventoryType.SlotType;
 import org.bukkit.event.player.AsyncPlayerChatEvent;
@@ -2163,10 +2164,15 @@ public class PlayerConnection implements PacketListenerPlayIn {
 
     @Override
     public void a(PacketPlayInCloseWindow packetplayinclosewindow) {
+        // Paper start
+        handleContainerClose(packetplayinclosewindow, InventoryCloseEvent.Reason.PLAYER);
+    }
+    public void handleContainerClose(PacketPlayInCloseWindow packetplayinclosewindow, InventoryCloseEvent.Reason reason) {
+        // Paper end
         PlayerConnectionUtils.ensureMainThread(packetplayinclosewindow, this, this.player.getWorldServer());
 
         if (this.player.isFrozen()) return; // CraftBukkit
-        CraftEventFactory.handleInventoryCloseEvent(this.player); // CraftBukkit
+        CraftEventFactory.handleInventoryCloseEvent(this.player, reason); // CraftBukkit // Paper
 
         this.player.o();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 02479d398189f0956a6e2a8882f398e33853873e..020cd10518328b81495e44b816446c96bfe1bdcc 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -422,7 +422,7 @@ public abstract class PlayerList {
         // CraftBukkit start - Quitting must be before we do final save of data, in case plugins need to modify it
         // See SPIGOT-5799, SPIGOT-6145
         if (entityplayer.activeContainer != entityplayer.defaultContainer) {
-            entityplayer.closeInventory();
+            entityplayer.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.DISCONNECT); // Paper
         }
 
         PlayerQuitEvent playerQuitEvent = new PlayerQuitEvent(cserver.getPlayer(entityplayer), "\u00A7e" + entityplayer.getName() + " left the game");
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 78e99f072304fbddec95fed488b4b14743bd1252..46de86d72ddee11026bef01098a5f3f31c6606cc 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1014,7 +1014,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
         for (TileEntity tileentity : chunk.getTileEntities().values()) {
             if (tileentity instanceof IInventory) {
                 for (org.bukkit.entity.HumanEntity h : Lists.newArrayList(((IInventory) tileentity).getViewers())) {
-                    h.closeInventory();
+                    h.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNLOADED); // Paper
                 }
             }
         }
@@ -1072,7 +1072,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
         // Spigot Start
         if (entity.getBukkitEntity() instanceof org.bukkit.inventory.InventoryHolder) {
             for (org.bukkit.entity.HumanEntity h : Lists.newArrayList(((org.bukkit.inventory.InventoryHolder) entity.getBukkitEntity()).getInventory().getViewers())) {
-                h.closeInventory();
+                h.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNLOADED); // Paper
             }
         }
         // Spigot End
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index a1c318aa6501d9d0bdd53dc1fb8a99b7a782b4ce..ebcd2d043b3e6cf90b62eda1ea7a2d8c01f1c7a8 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -370,7 +370,7 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         if (((EntityPlayer) getHandle()).playerConnection == null) return;
         if (getHandle().activeContainer != getHandle().defaultContainer) {
             // fire INVENTORY_CLOSE if one already open
-            ((EntityPlayer) getHandle()).playerConnection.a(new PacketPlayInCloseWindow(getHandle().activeContainer.windowId));
+            ((EntityPlayer) getHandle()).playerConnection.handleContainerClose(new PacketPlayInCloseWindow(getHandle().activeContainer.windowId), org.bukkit.event.inventory.InventoryCloseEvent.Reason.OPEN_NEW); // Paper
         }
         EntityPlayer player = (EntityPlayer) getHandle();
         Container container;
@@ -436,8 +436,13 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
 
     @Override
     public void closeInventory() {
-        getHandle().closeInventory();
+        // Paper start
+        getHandle().closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.PLUGIN);
     }
+    public void closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason reason) {
+        getHandle().closeInventory(reason);
+    }
+    // Paper end
 
     @Override
     public boolean isBlocking() {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 0499a13549d19e9c81b4042219d8996fe1d86ae3..0a9e4dd47660748a80c40a2790ee197ceeb346b0 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -813,7 +813,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
         // Close any foreign inventory
         if (getHandle().activeContainer != getHandle().defaultContainer) {
-            getHandle().closeInventory();
+            getHandle().closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.TELEPORT); // Paper
         }
 
         // Check if the fromWorld and toWorld are the same.
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index f4242870654ea6faa6829348717cd2f3c3407679..52762d75edd35dd3bc9668e3f7a3c79be279b783 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1173,7 +1173,7 @@ public class CraftEventFactory {
 
     public static Container callInventoryOpenEvent(EntityPlayer player, Container container, boolean cancelled) {
         if (player.activeContainer != player.defaultContainer) { // fire INVENTORY_CLOSE if one already open
-            player.playerConnection.a(new PacketPlayInCloseWindow(player.activeContainer.windowId));
+            player.playerConnection.handleContainerClose(new PacketPlayInCloseWindow(player.activeContainer.windowId), InventoryCloseEvent.Reason.OPEN_NEW); // Paper
         }
 
         CraftServer server = player.world.getServer();
@@ -1338,8 +1338,18 @@ public class CraftEventFactory {
         return event;
     }
 
+    // Paper start
+    /**
+     * Incase plugins hooked into this or Spigot adds a new inventory close event. Prefer to pass a reason
+     * @param human
+     */
+    @Deprecated
     public static void handleInventoryCloseEvent(EntityHuman human) {
-        InventoryCloseEvent event = new InventoryCloseEvent(human.activeContainer.getBukkitView());
+        handleInventoryCloseEvent(human, org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNKNOWN);
+    }
+    public static void handleInventoryCloseEvent(EntityHuman human, org.bukkit.event.inventory.InventoryCloseEvent.Reason reason) {
+        // Paper end
+        InventoryCloseEvent event = new InventoryCloseEvent(human.activeContainer.getBukkitView(), reason); // Paper
         human.world.getServer().getPluginManager().callEvent(event);
         human.activeContainer.transferTo(human.defaultContainer, human.getBukkitEntity());
     }
