#927: Add PlayerRecipeBookSettingsChangeEvent

src/main/java/org/bukkit/event/player/PlayerRecipeBookSettingsChangeEvent.java

@@ -0,0 +1,87 @@
+package org.bukkit.event.player;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Called when a player changes recipe book settings.
+ */
+public class PlayerRecipeBookSettingsChangeEvent extends PlayerEvent {
+
+    private static final HandlerList handlers = new HandlerList();
+    private final RecipeBookType recipeBookType;
+    private final boolean open;
+    private final boolean filtering;
+
+    public PlayerRecipeBookSettingsChangeEvent(@NotNull final Player player, @NotNull final RecipeBookType recipeBookType, final boolean open, final boolean filtering) {
+        super(player);
+        this.recipeBookType = recipeBookType;
+        this.open = open;
+        this.filtering = filtering;
+    }
+
+    /**
+     * Gets the type of recipe book the player is changing the settings for.
+     *
+     * @return the type of recipe book
+     */
+    @NotNull
+    public RecipeBookType getRecipeBookType() {
+        return recipeBookType;
+    }
+
+    /**
+     * Checks if the recipe book is being opened or closed.
+     *
+     * @return true if opening
+     */
+    public boolean isOpen() {
+        return open;
+    }
+
+    /**
+     * Checks if the recipe book filter is being enabled or disabled.
+     *
+     * @return true if enabling
+     */
+    public boolean isFiltering() {
+        return filtering;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    /**
+     * Enum representing the various types of recipe book.
+     * <br>
+     * Different types of recipe book are shown in different GUIs.
+     */
+    public enum RecipeBookType {
+
+        /**
+         * Recipe book seen in crafting table and player inventory.
+         */
+        CRAFTING,
+        /**
+         * Recipe book seen in furnace.
+         */
+        FURNACE,
+        /**
+         * Recipe book seen in blast furnace.
+         */
+        BLAST_FURNACE,
+        /**
+         * Recipe book seen in smoker.
+         */
+        SMOKER;
+    }
+}