Paper/patches/api/0127-AnvilDamageEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Fri, 20 Jul 2018 23:36:55 -0500
Subject: [PATCH] AnvilDamageEvent


diff --git a/src/main/java/com/destroystokyo/paper/event/block/AnvilDamagedEvent.java b/src/main/java/com/destroystokyo/paper/event/block/AnvilDamagedEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..1472ecef11627d82f72911d86d579ad3bb365dca
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/block/AnvilDamagedEvent.java
@@ -0,0 +1,149 @@
+package com.destroystokyo.paper.event.block;
+
+import org.bukkit.Material;
+import org.bukkit.block.data.BlockData;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.inventory.InventoryEvent;
+import org.bukkit.inventory.AnvilInventory;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+/**
+ * Called when an anvil is damaged from being used
+ */
+@NullMarked
+public class AnvilDamagedEvent extends InventoryEvent implements Cancellable {
+
+    private static final HandlerList HANDLER_LIST = new HandlerList();
+
+    private DamageState damageState;
+    private boolean cancelled;
+
+    @ApiStatus.Internal
+    public AnvilDamagedEvent(final InventoryView inventory, final @Nullable BlockData blockData) {
+        super(inventory);
+        this.damageState = DamageState.getState(blockData);
+    }
+
+    @Override
+    public AnvilInventory getInventory() {
+        return (AnvilInventory) super.getInventory();
+    }
+
+    /**
+     * Gets the new state of damage on the anvil
+     *
+     * @return Damage state
+     */
+    public DamageState getDamageState() {
+        return this.damageState;
+    }
+
+    /**
+     * Sets the new state of damage on the anvil
+     *
+     * @param damageState Damage state
+     */
+    public void setDamageState(final DamageState damageState) {
+        this.damageState = damageState;
+    }
+
+    /**
+     * Gets if anvil is breaking on this use
+     *
+     * @return {@code true} if breaking
+     */
+    public boolean isBreaking() {
+        return this.damageState == DamageState.BROKEN;
+    }
+
+    /**
+     * Sets if anvil is breaking on this use
+     *
+     * @param breaking {@code true} if breaking
+     */
+    public void setBreaking(final boolean breaking) {
+        if (breaking) {
+            this.damageState = DamageState.BROKEN;
+        } else if (this.damageState == DamageState.BROKEN) {
+            this.damageState = DamageState.DAMAGED;
+        }
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return this.cancelled;
+    }
+
+    @Override
+    public void setCancelled(final boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return HANDLER_LIST;
+    }
+
+    public static HandlerList getHandlerList() {
+        return HANDLER_LIST;
+    }
+
+    /**
+     * Represents the amount of damage on an anvil block
+     */
+    public enum DamageState {
+        FULL(Material.ANVIL),
+        CHIPPED(Material.CHIPPED_ANVIL),
+        DAMAGED(Material.DAMAGED_ANVIL),
+        BROKEN(Material.AIR);
+
+        private final Material material;
+
+        DamageState(final Material material) {
+            this.material = material;
+        }
+
+        /**
+         * Get block material of this state
+         *
+         * @return Material
+         */
+        public Material getMaterial() {
+            return this.material;
+        }
+
+        /**
+         * Get damaged state by block data
+         *
+         * @param blockData Block data
+         * @return DamageState
+         * @throws IllegalArgumentException If non anvil block data is given
+         */
+        public static DamageState getState(final @Nullable BlockData blockData) {
+            return blockData == null ? BROKEN : getState(blockData.getMaterial());
+        }
+
+        /**
+         * Get damaged state by block material
+         *
+         * @param material Block material
+         * @return DamageState
+         * @throws IllegalArgumentException If non anvil material is given
+         */
+        public static DamageState getState(final @Nullable Material material) {
+            if (material == null) {
+                return BROKEN;
+            }
+            for (final DamageState state : values()) {
+                if (state.getMaterial() == material) {
+                    return state;
+                }
+            }
+            throw new IllegalArgumentException("Material is not an anvil state");
+        }
+    }
+}