Paper/patches/server/1009-Add-titleOverride-to-InventoryOpenEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 4 Mar 2022 12:45:03 -0800
Subject: [PATCH] Add titleOverride to InventoryOpenEvent


diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 7838c7e051b1c4966e5a10289577d60a58ab16dd..872bd74b581249a8132ec5c37dfdd9e699bfbafa 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1560,12 +1560,17 @@ public class ServerPlayer extends Player {
             this.nextContainerCounter();
             AbstractContainerMenu container = factory.createMenu(this.containerCounter, this.getInventory(), this);
 
+            Component title = null; // Paper
             // CraftBukkit start - Inventory open hook
             if (container != null) {
                 container.setTitle(factory.getDisplayName());
 
                 boolean cancelled = false;
-                container = CraftEventFactory.callInventoryOpenEvent(this, container, cancelled);
+                // Paper start
+                final com.mojang.datafixers.util.Pair<net.kyori.adventure.text.Component, AbstractContainerMenu> result = CraftEventFactory.callInventoryOpenEventWithTitle(this, container, cancelled);
+                container = result.getSecond();
+                title = PaperAdventure.asVanilla(result.getFirst());
+                // Paper end
                 if (container == null && !cancelled) { // Let pre-cancelled events fall through
                     // SPIGOT-5263 - close chest if cancelled
                     if (factory instanceof Container) {
@@ -1587,7 +1592,7 @@ public class ServerPlayer extends Player {
             } else {
                 // CraftBukkit start
                 this.containerMenu = container;
-                if (!this.isImmobile()) this.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(), container.getTitle())); // Paper
+                if (!this.isImmobile()) this.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(), Objects.requireNonNullElseGet(title, container::getTitle))); // Paper
                 // CraftBukkit end
                 this.initMenu(container);
                 return OptionalInt.of(this.containerCounter);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index 8a6095850cece3203eeae474dbf32090f698a32e..aefb9879b2edadfb4b21d80135d713b9d34c9941 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -357,12 +357,16 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         Preconditions.checkArgument(windowType != null, "Unknown windowType");
         AbstractContainerMenu container = new CraftContainer(inventory, player, player.nextContainerCounter());
 
-        container = CraftEventFactory.callInventoryOpenEvent(player, container);
+        // Paper start
+        final com.mojang.datafixers.util.Pair<net.kyori.adventure.text.Component, AbstractContainerMenu> result = CraftEventFactory.callInventoryOpenEventWithTitle(player, container);
+        container = result.getSecond();
+        // Paper end
         if (container == null) return;
 
         //String title = container.getBukkitView().getTitle(); // Paper - comment
         net.kyori.adventure.text.Component adventure$title = container.getBukkitView().title(); // Paper
         if (adventure$title == null) adventure$title = net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(container.getBukkitView().getTitle()); // Paper
+        if (result.getFirst() != null) adventure$title = result.getFirst(); // Paper
 
         //player.connection.send(new ClientboundOpenScreenPacket(container.containerId, windowType, CraftChatMessage.fromString(title)[0])); // Paper - comment
         if (!player.isImmobile()) player.connection.send(new ClientboundOpenScreenPacket(container.containerId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
@@ -438,7 +442,10 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         }
 
         // Trigger an INVENTORY_OPEN event
-        container = CraftEventFactory.callInventoryOpenEvent(player, container);
+        // Paper start
+        final com.mojang.datafixers.util.Pair<net.kyori.adventure.text.Component, AbstractContainerMenu> result = CraftEventFactory.callInventoryOpenEventWithTitle(player, container);
+        container = result.getSecond();
+        // Paper end
         if (container == null) {
             return;
         }
@@ -449,6 +456,7 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         //String title = inventory.getTitle(); // Paper - comment
         net.kyori.adventure.text.Component adventure$title = inventory.title(); // Paper
         if (adventure$title == null) adventure$title = net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(inventory.getTitle()); // Paper
+        if (result.getFirst() != null) adventure$title = result.getFirst(); // Paper
         //player.connection.send(new ClientboundOpenScreenPacket(container.containerId, windowType, CraftChatMessage.fromString(title)[0])); // Paper - comment
         if (!player.isImmobile()) player.connection.send(new ClientboundOpenScreenPacket(container.containerId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
         player.containerMenu = container;
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 975f4fe01ce0c3f98c4467927242558a66bc19f3..249e3f703ef1b40b5401f167d4c30faafb69bb5b 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1441,10 +1441,21 @@ public class CraftEventFactory {
     }
 
     public static AbstractContainerMenu callInventoryOpenEvent(ServerPlayer player, AbstractContainerMenu container) {
-        return CraftEventFactory.callInventoryOpenEvent(player, container, false);
+        // Paper start
+        return callInventoryOpenEventWithTitle(player, container).getSecond();
+    }
+    public static com.mojang.datafixers.util.Pair<net.kyori.adventure.text.@org.jetbrains.annotations.Nullable Component, @org.jetbrains.annotations.Nullable AbstractContainerMenu> callInventoryOpenEventWithTitle(ServerPlayer player, AbstractContainerMenu container) {
+        return CraftEventFactory.callInventoryOpenEventWithTitle(player, container, false);
+        // Paper end
     }
 
+    @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper - use method that acknowledges title overrides
     public static AbstractContainerMenu callInventoryOpenEvent(ServerPlayer player, AbstractContainerMenu container, boolean cancelled) {
+        // Paper start
+        return callInventoryOpenEventWithTitle(player, container, cancelled).getSecond();
+    }
+    public static com.mojang.datafixers.util.Pair<net.kyori.adventure.text.@org.jetbrains.annotations.Nullable Component, @org.jetbrains.annotations.Nullable AbstractContainerMenu> callInventoryOpenEventWithTitle(ServerPlayer player, AbstractContainerMenu container, boolean cancelled) {
+        // Paper end
         if (player.containerMenu != player.inventoryMenu) { // fire INVENTORY_CLOSE if one already open
             player.connection.handleContainerClose(new ServerboundContainerClosePacket(player.containerMenu.containerId), InventoryCloseEvent.Reason.OPEN_NEW); // Paper
         }
@@ -1459,10 +1470,10 @@ public class CraftEventFactory {
 
         if (event.isCancelled()) {
             container.transferTo(player.containerMenu, craftPlayer);
-            return null;
+            return com.mojang.datafixers.util.Pair.of(null, null); // Paper - title override
         }
 
-        return container;
+        return com.mojang.datafixers.util.Pair.of(event.titleOverride(), container); // Paper - title override
     }
 
     public static ItemStack callPreCraftEvent(Container matrix, Container resultInventory, ItemStack result, InventoryView lastCraftView, boolean isRepair) {