62 lines
2.8 KiB
Diff
62 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Riley Park <riley.park@meino.net>
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Date: Sun, 23 May 2021 05:04:28 -0700
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Subject: [PATCH] ItemStack#editMeta
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diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
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index 6082ee2fb68433e1d42a7f0617f25a232960ded6..66352c63bcacb9b418a3cc61d8a6219b4cdfbb32 100644
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--- a/src/main/java/org/bukkit/inventory/ItemStack.java
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+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
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@@ -547,6 +547,50 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, net.kyor
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return result.ensureServerConversions(); // Paper
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}
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+ // Paper start
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+ /**
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+ * Edits the {@link ItemMeta} of this stack.
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+ * <p>
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+ * The {@link java.util.function.Consumer} must only interact
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+ * with this stack's {@link ItemMeta} through the provided {@link ItemMeta} instance.
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+ * Calling this method or any other meta-related method of the {@link ItemStack} class
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+ * (such as {@link #getItemMeta()}, {@link #addItemFlags(ItemFlag...)}, {@link #lore()}, etc.)
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+ * from inside the consumer is disallowed and will produce undefined results or exceptions.
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+ * </p>
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+ *
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+ * @param consumer the meta consumer
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+ * @return {@code true} if the edit was successful, {@code false} otherwise
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+ */
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+ public boolean editMeta(final @NotNull java.util.function.Consumer<? super ItemMeta> consumer) {
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+ return editMeta(ItemMeta.class, consumer);
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+ }
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+
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+ /**
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+ * Edits the {@link ItemMeta} of this stack if the meta is of the specified type.
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+ * <p>
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+ * The {@link java.util.function.Consumer} must only interact
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+ * with this stack's {@link ItemMeta} through the provided {@link ItemMeta} instance.
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+ * Calling this method or any other meta-related method of the {@link ItemStack} class
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+ * (such as {@link #getItemMeta()}, {@link #addItemFlags(ItemFlag...)}, {@link #lore()}, etc.)
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+ * from inside the consumer is disallowed and will produce undefined results or exceptions.
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+ * </p>
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+ *
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+ * @param metaClass the type of meta to edit
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+ * @param consumer the meta consumer
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+ * @param <M> the meta type
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+ * @return {@code true} if the edit was successful, {@code false} otherwise
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+ */
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+ public <M extends ItemMeta> boolean editMeta(final @NotNull Class<M> metaClass, final @NotNull java.util.function.Consumer<@NotNull ? super M> consumer) {
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+ final @Nullable ItemMeta meta = this.getItemMeta();
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+ if (metaClass.isInstance(meta)) {
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+ consumer.accept((M) meta);
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+ this.setItemMeta(meta);
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+ return true;
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+ }
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+ return false;
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+ }
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+ // Paper end
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+
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/**
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* Get a copy of this ItemStack's {@link ItemMeta}.
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*
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