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https://github.com/PaperMC/Paper.git
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109 lines
3.7 KiB
Diff
109 lines
3.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Mariell Hoversholm <proximyst@proximyst.com>
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Date: Sat, 29 Aug 2020 21:55:41 +0200
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Subject: [PATCH] Add PlayerInsertLecternBookEvent
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diff --git a/src/main/java/io/papermc/paper/event/player/PlayerInsertLecternBookEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerInsertLecternBookEvent.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..6d31e0c30f0389eeaf44335bd842ca3e1d0212eb
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/event/player/PlayerInsertLecternBookEvent.java
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@@ -0,0 +1,96 @@
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+package io.papermc.paper.event.player;
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+
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+import com.google.common.base.Preconditions;
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+import org.bukkit.block.Block;
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+import org.bukkit.block.BlockState;
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+import org.bukkit.block.Lectern;
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+import org.bukkit.entity.Player;
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+import org.bukkit.event.Cancellable;
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+import org.bukkit.event.HandlerList;
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+import org.bukkit.event.player.PlayerEvent;
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+import org.bukkit.inventory.ItemStack;
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+import org.jetbrains.annotations.ApiStatus;
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+import org.jspecify.annotations.NullMarked;
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+
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+/**
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+ * This event is called when a player clicks on a lectern to insert a book.
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+ * If this event is cancelled the player will keep the book and the lectern will remain empty.
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+ */
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+@NullMarked
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+public class PlayerInsertLecternBookEvent extends PlayerEvent implements Cancellable {
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+
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+ private static final HandlerList HANDLER_LIST = new HandlerList();
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+ private boolean cancelled = false;
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+ private final Block block;
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+ private ItemStack book;
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+
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+ @ApiStatus.Internal
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+ public PlayerInsertLecternBookEvent(final Player player, final Block block, final ItemStack book) {
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+ super(player);
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+ this.block = block;
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+ this.book = book;
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+ }
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+
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+ /**
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+ * Gets the block of the lectern involved in this event.
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+ *
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+ * @return the block of the lectern
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+ */
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+ public Block getBlock() {
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+ return this.block;
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+ }
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+
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+ /**
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+ * Fetches the lectern block state that was part of this event.
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+ * This method constructs a new snapshot {@link org.bukkit.block.BlockState}.
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+ *
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+ * @return a new lectern state snapshot of the involved lectern
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+ * @throws IllegalStateException if the block at {@link #getBlock()} is no longer a lectern
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+ */
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+ public Lectern getLectern() {
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+ final BlockState state = this.getBlock().getState();
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+ Preconditions.checkState(state instanceof Lectern, "Block state of lectern block is no longer a lectern tile state!");
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+ return (Lectern) state;
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+ }
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+
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+ /**
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+ * Returns the itemstack the player tried to insert. This is a copy of the item,
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+ * changes made to this itemstack will not affect the book that is being placed in the lectern.
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+ * If you want to mutate the item stack that ends up in the lectern, use {@link #setBook(ItemStack)}.
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+ *
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+ * @return the book that is being placed
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+ */
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+ public ItemStack getBook() {
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+ return this.book.clone();
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+ }
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+
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+ /**
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+ * Sets the itemstack to insert into the lectern.
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+ *
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+ * @param book the book to insert (non book items will leave the lectern in a locked
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+ * state as the menu cannot be opened, preventing item extraction)
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+ */
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+ public void setBook(final ItemStack book) {
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+ Preconditions.checkArgument(book != null, "Cannot set book to null");
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+ this.book = book.clone();
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+ }
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+
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+ @Override
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+ public boolean isCancelled() {
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+ return this.cancelled;
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+ }
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+
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+ @Override
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+ public void setCancelled(final boolean cancel) {
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+ this.cancelled = cancel;
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+ }
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+
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+ @Override
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+ public HandlerList getHandlers() {
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+ return HANDLER_LIST;
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+ }
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+
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+ public static HandlerList getHandlerList() {
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+ return HANDLER_LIST;
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+ }
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+}
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