From 9d24d601e2461a32cf1ae9c01949b40a6af0fcea Mon Sep 17 00:00:00 2001
From: Bukkit/Spigot <noreply+git-bukkit@papermc.io>
Date: Fri, 17 Aug 2018 20:40:48 +1000
Subject: [PATCH] SPIGOT-4283: Allow setting recipe groups

By: md_5 <git@md-5.net>
---
 .../org/bukkit/inventory/FurnaceRecipe.java   | 23 ++++++++++++++++++
 .../org/bukkit/inventory/ShapedRecipe.java    | 23 ++++++++++++++++++
 .../org/bukkit/inventory/ShapelessRecipe.java | 24 +++++++++++++++++++
 3 files changed, 70 insertions(+)

diff --git a/paper-api/src/main/java/org/bukkit/inventory/FurnaceRecipe.java b/paper-api/src/main/java/org/bukkit/inventory/FurnaceRecipe.java
index 9369660658..75ad4be86d 100644
--- a/paper-api/src/main/java/org/bukkit/inventory/FurnaceRecipe.java
+++ b/paper-api/src/main/java/org/bukkit/inventory/FurnaceRecipe.java
@@ -15,6 +15,7 @@ public class FurnaceRecipe implements Recipe, Keyed {
     private ItemStack ingredient;
     private float experience;
     private int cookingTime;
+    private String group = "";
 
     @Deprecated
     public FurnaceRecipe(ItemStack result, Material source) {
@@ -152,4 +153,26 @@ public class FurnaceRecipe implements Recipe, Keyed {
     public NamespacedKey getKey() {
         return key;
     }
+
+    /**
+     * Get the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @return recipe group. An empty string denotes no group. May not be null.
+     */
+    public String getGroup() {
+        return group;
+    }
+
+    /**
+     * Set the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @param group recipe group. An empty string denotes no group. May not be
+     * null.
+     */
+    public void setGroup(String group) {
+        Preconditions.checkArgument(group != null, "group");
+        this.group = group;
+    }
 }
diff --git a/paper-api/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/paper-api/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index d9af715502..398ac2454d 100644
--- a/paper-api/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/paper-api/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -19,6 +19,7 @@ public class ShapedRecipe implements Recipe, Keyed {
     private final ItemStack output;
     private String[] rows;
     private Map<Character, ItemStack> ingredients = new HashMap<Character, ItemStack>();
+    private String group = "";
 
     @Deprecated
     public ShapedRecipe(ItemStack result) {
@@ -168,4 +169,26 @@ public class ShapedRecipe implements Recipe, Keyed {
     public NamespacedKey getKey() {
         return key;
     }
+
+    /**
+     * Get the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @return recipe group. An empty string denotes no group. May not be null.
+     */
+    public String getGroup() {
+        return group;
+    }
+
+    /**
+     * Set the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @param group recipe group. An empty string denotes no group. May not be
+     * null.
+     */
+    public void setGroup(String group) {
+        Preconditions.checkArgument(group != null, "group");
+        this.group = group;
+    }
 }
diff --git a/paper-api/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/paper-api/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index ca5c09b868..0c340c84ea 100644
--- a/paper-api/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/paper-api/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -1,5 +1,6 @@
 package org.bukkit.inventory;
 
+import com.google.common.base.Preconditions;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
@@ -19,6 +20,7 @@ public class ShapelessRecipe implements Recipe, Keyed {
     private final NamespacedKey key;
     private final ItemStack output;
     private final List<ItemStack> ingredients = new ArrayList<ItemStack>();
+    private String group = "";
 
     @Deprecated
     public ShapelessRecipe(ItemStack result) {
@@ -239,4 +241,26 @@ public class ShapelessRecipe implements Recipe, Keyed {
     public NamespacedKey getKey() {
         return key;
     }
+
+    /**
+     * Get the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @return recipe group. An empty string denotes no group. May not be null.
+     */
+    public String getGroup() {
+        return group;
+    }
+
+    /**
+     * Set the group of this recipe. Recipes with the same group may be grouped
+     * together when displayed in the client.
+     *
+     * @param group recipe group. An empty string denotes no group. May not be
+     * null.
+     */
+    public void setGroup(String group) {
+        Preconditions.checkArgument(group != null, "group");
+        this.group = group;
+    }
 }