Full Java tooltip parity (as much as that is possible)

core/src/main/java/org/geysermc/geyser/GeyserImpl.java

@@ -252,6 +252,7 @@ public void initialize() {
                 return;
             }
 
+            MinecraftLocale.downloadDeprecations();
             MinecraftLocale.ensureEN_US();
             String locale = GeyserLocale.getDefaultLocale();
             if (!"en_us".equals(locale)) {

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/FrogEntity.java

@@ -58,7 +58,7 @@ public void setPose(Pose pose) {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.FROG_VARIANT;
     }
 

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/VariantHolder.java

@@ -64,7 +64,7 @@ default void setVariantFromJavaId(int variant) {
      * The registry in {@link org.geysermc.geyser.session.cache.registry.JavaRegistries} for this mob's variants. The registry can utilise the {@link VariantHolder#reader(Class, Enum)} method
      * to create a reader to be used in {@link org.geysermc.geyser.session.cache.RegistryCache}.
      */
-    JavaRegistryKey<? extends BedrockVariant> variantRegistry();
+    JavaRegistryKey<? extends BedrockVariant, ?> variantRegistry();
 
     /**
      * Should set the variant for bedrock.

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/farm/ChickenEntity.java

@@ -50,7 +50,7 @@ protected Tag<Item> getFoodTag() {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.CHICKEN_VARIANT;
     }
 }

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/farm/CowEntity.java

@@ -79,7 +79,7 @@ protected Tag<Item> getFoodTag() {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.COW_VARIANT;
     }
 }

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/farm/PigEntity.java

@@ -152,7 +152,7 @@ public boolean isClientControlled() {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.PIG_VARIANT;
     }
 

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/tameable/CatEntity.java

@@ -85,7 +85,7 @@ public void setTameableFlags(ByteEntityMetadata entityMetadata) {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.CAT_VARIANT;
     }
 

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/tameable/WolfEntity.java

@@ -113,7 +113,7 @@ public void setWolfAngerTime(IntEntityMetadata entityMetadata) {
     }
 
     @Override
-    public JavaRegistryKey<BuiltInVariant> variantRegistry() {
+    public JavaRegistryKey<BuiltInVariant, ?> variantRegistry() {
         return JavaRegistries.WOLF_VARIANT;
     }
 

core/src/main/java/org/geysermc/geyser/inventory/GeyserItemStack.java

@@ -30,6 +30,7 @@
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.Setter;
+import net.kyori.adventure.text.Component;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 import org.cloudburstmc.protocol.bedrock.data.inventory.ItemData;
@@ -45,6 +46,7 @@
 import org.geysermc.mcprotocollib.protocol.data.game.item.component.DataComponentType;
 import org.geysermc.mcprotocollib.protocol.data.game.item.component.DataComponentTypes;
 import org.geysermc.mcprotocollib.protocol.data.game.item.component.DataComponents;
+import org.geysermc.mcprotocollib.protocol.data.game.item.component.WrittenBookContent;
 import org.geysermc.mcprotocollib.protocol.data.game.recipe.display.slot.EmptySlotDisplay;
 import org.geysermc.mcprotocollib.protocol.data.game.recipe.display.slot.ItemSlotDisplay;
 import org.geysermc.mcprotocollib.protocol.data.game.recipe.display.slot.ItemStackSlotDisplay;
@@ -173,6 +175,10 @@ public <T> T getComponentElseGet(@NonNull DataComponentType<T> type, Supplier<T>
         return value == null ? supplier.get() : value;
     }
 
+    public boolean hasComponent(@NonNull DataComponentType<?> type) {
+        return getComponent(type) != null;
+    }
+
     public int getNetId() {
         return isEmpty() ? 0 : netId;
     }
@@ -248,6 +254,17 @@ public SlotDisplay asSlotDisplay() {
         return new ItemStackSlotDisplay(this.getItemStack());
     }
 
+    public Component getName() {
+        return getComponentElseGet(DataComponentTypes.CUSTOM_NAME, () -> {
+            WrittenBookContent book = getComponent(DataComponentTypes.WRITTEN_BOOK_CONTENT);
+            if (book != null) {
+                return Component.text(book.getTitle().getRaw());
+            }
+
+            return asItem().getName(this);
+        });
+    }
+
     public int getMaxDamage() {
         return getComponentElseGet(DataComponentTypes.MAX_DAMAGE, () -> 0);
     }

core/src/main/java/org/geysermc/geyser/inventory/item/BannerPattern.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2024 GeyserMC. http://geysermc.org
+ * Copyright (c) 2025 GeyserMC. http://geysermc.org
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,84 +25,36 @@
 
 package org.geysermc.geyser.inventory.item;
 
-import lombok.Getter;
-import net.kyori.adventure.key.Key;
 import org.checkerframework.checker.nullness.qual.Nullable;
-import org.geysermc.geyser.util.MinecraftKey;
+import org.geysermc.geyser.session.GeyserSession;
+import org.geysermc.geyser.session.cache.registry.JavaRegistries;
+import org.geysermc.geyser.session.cache.registry.RegistryEntryContext;
 
-import java.util.Locale;
+public record BannerPattern(BedrockBannerPattern bedrockPattern, String translationKey) {
 
-@Getter
-public enum BannerPattern {
-    BASE("b"),
-    SQUARE_BOTTOM_LEFT("bl"),
-    SQUARE_BOTTOM_RIGHT("br"),
-    SQUARE_TOP_LEFT("tl"),
-    SQUARE_TOP_RIGHT("tr"),
-    STRIPE_BOTTOM("bs"),
-    STRIPE_TOP("ts"),
-    STRIPE_LEFT("ls"),
-    STRIPE_RIGHT("rs"),
-    STRIPE_CENTER("cs"),
-    STRIPE_MIDDLE("ms"),
-    STRIPE_DOWNRIGHT("drs"),
-    STRIPE_DOWNLEFT("dls"),
-    SMALL_STRIPES("ss"),
-    CROSS("cr"),
-    STRAIGHT_CROSS("sc"),
-    TRIANGLE_BOTTOM("bt"),
-    TRIANGLE_TOP("tt"),
-    TRIANGLES_BOTTOM("bts"),
-    TRIANGLES_TOP("tts"),
-    DIAGONAL_LEFT("ld"),
-    DIAGONAL_UP_RIGHT("rd"),
-    DIAGONAL_UP_LEFT("lud"),
-    DIAGONAL_RIGHT("rud"),
-    CIRCLE("mc"),
-    RHOMBUS("mr"),
-    HALF_VERTICAL("vh"),
-    HALF_HORIZONTAL("hh"),
-    HALF_VERTICAL_RIGHT("vhr"),
-    HALF_HORIZONTAL_BOTTOM("hhb"),
-    BORDER("bo"),
-    CURLY_BORDER("cbo"),
-    GRADIENT("gra"),
-    GRADIENT_UP("gru"),
-    BRICKS("bri"),
-    GLOBE("glb"),
-    CREEPER("cre"),
-    SKULL("sku"),
-    FLOWER("flo"),
-    MOJANG("moj"),
-    PIGLIN("pig"),
-    FLOW("flw"),
-    GUSTER("gus");
-
-    private static final BannerPattern[] VALUES = values();
-
-    private final Key javaIdentifier;
-    private final String bedrockIdentifier;
-
-    BannerPattern(String bedrockIdentifier) {
-        this.javaIdentifier = MinecraftKey.key(this.name().toLowerCase(Locale.ROOT));
-        this.bedrockIdentifier = bedrockIdentifier;
+    public static BannerPattern read(RegistryEntryContext context) {
+        String translationKey = context.data().getString("translation_key");
+        // getByJavaIdentifier defaults to BASE
+        return new BannerPattern(BedrockBannerPattern.getByJavaIdentifier(context.id()), translationKey);
     }
 
-    public static BannerPattern getByJavaIdentifier(Key key) {
-        for (BannerPattern bannerPattern : VALUES) {
-            if (bannerPattern.javaIdentifier.equals(key)) {
-                return bannerPattern;
-            }
+    /**
+     * @return the corresponding registered {@link BannerPattern} for the given {@link BedrockBannerPattern}, or null if none exists
+     */
+    public static BannerPattern fromBedrockPattern(GeyserSession session, @Nullable BedrockBannerPattern bedrockPattern) {
+        if (bedrockPattern == null) {
+            return null;
         }
-        return BASE; // Default fallback
-    }
 
-    public static @Nullable BannerPattern getByBedrockIdentifier(String bedrockIdentifier) {
-        for (BannerPattern bannerPattern : VALUES) {
-            if (bannerPattern.bedrockIdentifier.equals(bedrockIdentifier)) {
-                return bannerPattern;
+        for (BannerPattern javaPattern : session.getRegistryCache().registry(JavaRegistries.BANNER_PATTERN).values()) {
+            if (javaPattern.bedrockPattern == bedrockPattern) {
+                return javaPattern;
             }
         }
         return null;
     }
+
+    public static int findNetworkId(GeyserSession session, BedrockBannerPattern bedrockPattern) {
+        return JavaRegistries.BANNER_PATTERN.networkId(session, fromBedrockPattern(session, bedrockPattern));
+    }
 }

core/src/main/java/org/geysermc/geyser/inventory/item/BedrockBannerPattern.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2019-2024 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.geyser.inventory.item;
+
+import lombok.Getter;
+import net.kyori.adventure.key.Key;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.geysermc.geyser.util.MinecraftKey;
+
+import java.util.Locale;
+
+@Getter
+public enum BedrockBannerPattern {
+    BASE("b"),
+    SQUARE_BOTTOM_LEFT("bl"),
+    SQUARE_BOTTOM_RIGHT("br"),
+    SQUARE_TOP_LEFT("tl"),
+    SQUARE_TOP_RIGHT("tr"),
+    STRIPE_BOTTOM("bs"),
+    STRIPE_TOP("ts"),
+    STRIPE_LEFT("ls"),
+    STRIPE_RIGHT("rs"),
+    STRIPE_CENTER("cs"),
+    STRIPE_MIDDLE("ms"),
+    STRIPE_DOWNRIGHT("drs"),
+    STRIPE_DOWNLEFT("dls"),
+    SMALL_STRIPES("ss"),
+    CROSS("cr"),
+    STRAIGHT_CROSS("sc"),
+    TRIANGLE_BOTTOM("bt"),
+    TRIANGLE_TOP("tt"),
+    TRIANGLES_BOTTOM("bts"),
+    TRIANGLES_TOP("tts"),
+    DIAGONAL_LEFT("ld"),
+    DIAGONAL_UP_RIGHT("rd"),
+    DIAGONAL_UP_LEFT("lud"),
+    DIAGONAL_RIGHT("rud"),
+    CIRCLE("mc"),
+    RHOMBUS("mr"),
+    HALF_VERTICAL("vh"),
+    HALF_HORIZONTAL("hh"),
+    HALF_VERTICAL_RIGHT("vhr"),
+    HALF_HORIZONTAL_BOTTOM("hhb"),
+    BORDER("bo"),
+    CURLY_BORDER("cbo"),
+    GRADIENT("gra"),
+    GRADIENT_UP("gru"),
+    BRICKS("bri"),
+    GLOBE("glb"),
+    CREEPER("cre"),
+    SKULL("sku"),
+    FLOWER("flo"),
+    MOJANG("moj"),
+    PIGLIN("pig"),
+    FLOW("flw"),
+    GUSTER("gus");
+
+    private static final BedrockBannerPattern[] VALUES = values();
+
+    private final Key javaIdentifier;
+    private final String bedrockIdentifier;
+
+    BedrockBannerPattern(String bedrockIdentifier) {
+        this.javaIdentifier = MinecraftKey.key(this.name().toLowerCase(Locale.ROOT));
+        this.bedrockIdentifier = bedrockIdentifier;
+    }
+
+    public static BedrockBannerPattern getByJavaIdentifier(Key key) {
+        for (BedrockBannerPattern bannerPattern : VALUES) {
+            if (bannerPattern.javaIdentifier.equals(key)) {
+                return bannerPattern;
+            }
+        }
+        return BASE; // Default fallback
+    }
+
+    public static @Nullable BedrockBannerPattern getByBedrockIdentifier(String bedrockIdentifier) {
+        for (BedrockBannerPattern bannerPattern : VALUES) {
+            if (bannerPattern.bedrockIdentifier.equals(bedrockIdentifier)) {
+                return bannerPattern;
+            }
+        }
+        return null;
+    }
+}