Paper/Spigot-Server-Patches/0281-InventoryCloseEvent-Reason-API.patch

From 1d69bda1bb0ad97f6b6883bf69578383d490c36a 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/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 9430bccf6..aedf31a07 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -931,7 +931,7 @@ public class Chunk implements IChunkAccess {
                 {
                     if ( h instanceof org.bukkit.craftbukkit.entity.CraftHumanEntity )
                     {
-                       ( (org.bukkit.craftbukkit.entity.CraftHumanEntity) h).getHandle().closeInventory();
+                       ( (org.bukkit.craftbukkit.entity.CraftHumanEntity) h).getHandle().closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNLOADED); // Paper
                     }
                 }
             }
@@ -956,7 +956,7 @@ public class Chunk implements IChunkAccess {
                     {
                         if ( h instanceof org.bukkit.craftbukkit.entity.CraftHumanEntity )
                         {
-                           ( (org.bukkit.craftbukkit.entity.CraftHumanEntity) h).getHandle().closeInventory();
+                           ( (org.bukkit.craftbukkit.entity.CraftHumanEntity) h).getHandle().closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNLOADED); // Paper
                         }
                     }
                 }
diff --git a/src/main/java/net/minecraft/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index 2bab2ab92..20a46e2af 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -161,7 +161,7 @@ public abstract class EntityHuman extends EntityLiving {
         this.dg();
         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;
         }
 
@@ -363,6 +363,13 @@ public abstract class EntityHuman extends EntityLiving {
         return this.getHealth() <= 0.0F || this.isSleeping();
     }
 
+    // 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 a615d7867..6933d8876 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -347,7 +347,7 @@ 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;
         }
 
@@ -553,7 +553,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             this.inventory.clear();
         }
 
-        this.closeInventory();
+        this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.DEATH); // Paper
         this.setSpectatorTarget(this); // Remove spectated target
         // CraftBukkit end
 
@@ -865,7 +865,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             this.a((new ChatMessage("container.spectatorCantOpen", new Object[0])).a(EnumChatFormat.RED), true);
         } else {
             if (this.activeContainer != this.defaultContainer) {
-                this.closeInventory();
+                this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.OPEN_NEW); // Paper
             }
 
             if (iinventory instanceof ITileInventory) {
@@ -931,7 +931,7 @@ 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();
@@ -996,7 +996,12 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     }
 
     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.m();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 871dea68f..30d5c1734 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2019,7 +2019,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
         PlayerConnectionUtils.ensureMainThread(packetplayinclosewindow, this, this.player.getWorldServer());
 
         if (this.player.isFrozen()) return; // CraftBukkit
-        CraftEventFactory.handleInventoryCloseEvent(this.player); // CraftBukkit
+        CraftEventFactory.handleInventoryCloseEvent(this.player, org.bukkit.event.inventory.InventoryCloseEvent.Reason.PLAYER); // CraftBukkit // Paper
 
         this.player.m();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 64a86b699..e6ee5042c 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -423,7 +423,7 @@ public abstract class PlayerList {
         entityplayer.a(StatisticList.LEAVE_GAME);
 
         // CraftBukkit start - Quitting must be before we do final save of data, in case plugins need to modify it
-        org.bukkit.craftbukkit.event.CraftEventFactory.handleInventoryCloseEvent(entityplayer);
+        org.bukkit.craftbukkit.event.CraftEventFactory.handleInventoryCloseEvent(entityplayer, org.bukkit.event.inventory.InventoryCloseEvent.Reason.DISCONNECT); // Paper
 
         PlayerQuitEvent playerQuitEvent = new PlayerQuitEvent(cserver.getPlayer(entityplayer), "\u00A7e" + entityplayer.getName() + " left the game");
         cserver.getPluginManager().callEvent(playerQuitEvent);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index 707091754..c9cbf6979 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -417,8 +417,13 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
     }
 
     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
 
     public boolean isBlocking() {
         return getHandle().isBlocking();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 8699cc72f..0f1d700c7 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -740,7 +740,7 @@ 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 dfedd4c30..b220895c2 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1011,8 +1011,19 @@ 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) {
+        InventoryCloseEvent event = new InventoryCloseEvent(human.activeContainer.getBukkitView(), reason);
+        // Paper end
         human.world.getServer().getPluginManager().callEvent(event);
         human.activeContainer.transferTo(human.defaultContainer, human.getBukkitEntity());
     }
-- 
2.20.0