Add EntityDyeEvent and CollarColorable interface

paper-api/src/main/java/io/papermc/paper/entity/CollarColorable.java

@@ -0,0 +1,26 @@
+package io.papermc.paper.entity;
+
+import org.bukkit.DyeColor;
+import org.bukkit.entity.LivingEntity;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Entities that can have their collars colored.
+ */
+@NullMarked
+public interface CollarColorable extends LivingEntity {
+
+    /**
+     * Get the collar color of this entity
+     *
+     * @return the color of the collar
+     */
+    DyeColor getCollarColor();
+
+    /**
+     * Set the collar color of this entity
+     *
+     * @param color the color to apply
+     */
+    void setCollarColor(DyeColor color);
+}

paper-api/src/main/java/io/papermc/paper/event/entity/EntityDyeEvent.java

@@ -0,0 +1,82 @@
+package io.papermc.paper.event.entity;
+
+import org.bukkit.DyeColor;
+import org.bukkit.entity.Cat;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Sheep;
+import org.bukkit.entity.Wolf;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+/**
+ * Called when an entity is dyed. Currently, this is called for {@link Sheep}
+ * being dyed, and {@link Wolf}/{@link Cat} collars being dyed.
+ */
+@NullMarked
+public class EntityDyeEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList HANDLER_LIST = new HandlerList();
+
+    private final @Nullable Player player;
+    private DyeColor dyeColor;
+
+    private boolean cancelled;
+
+    @ApiStatus.Internal
+    public EntityDyeEvent(final Entity entity, final DyeColor dyeColor, final @Nullable Player player) {
+        super(entity);
+        this.dyeColor = dyeColor;
+        this.player = player;
+    }
+
+    /**
+     * Gets the DyeColor the entity is being dyed
+     *
+     * @return the DyeColor the entity is being dyed
+     */
+    public DyeColor getColor() {
+        return this.dyeColor;
+    }
+
+    /**
+     * Sets the DyeColor the entity is being dyed
+     *
+     * @param dyeColor the DyeColor the entity will be dyed
+     */
+    public void setColor(final DyeColor dyeColor) {
+        this.dyeColor = dyeColor;
+    }
+
+    /**
+     * Returns the player dyeing the entity, if available.
+     *
+     * @return player or {@code null}
+     */
+    public @Nullable Player getPlayer() {
+        return this.player;
+    }
+
+    @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;
+    }
+}

paper-api/src/main/java/org/bukkit/entity/Cat.java

@@ -13,7 +13,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Meow.
  */
-public interface Cat extends Tameable, Sittable {
+public interface Cat extends Tameable, Sittable, io.papermc.paper.entity.CollarColorable { // Paper - CollarColorable
 
     /**
      * Gets the current type of this cat.
@@ -36,6 +36,7 @@ public interface Cat extends Tameable, Sittable {
      * @return the color of the collar
      */
     @NotNull
+    @Override // Paper
     public DyeColor getCollarColor();
 
     /**
@@ -43,6 +44,7 @@ public interface Cat extends Tameable, Sittable {
      *
      * @param color the color to apply
      */
+    @Override // Paper
     public void setCollarColor(@NotNull DyeColor color);
 
     /**

paper-api/src/main/java/org/bukkit/entity/Wolf.java

@@ -9,7 +9,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Represents a Wolf
  */
-public interface Wolf extends Tameable, Sittable {
+public interface Wolf extends Tameable, Sittable, io.papermc.paper.entity.CollarColorable { // Paper - CollarColorable
 
     /**
      * Checks if this wolf is angry
@@ -34,6 +34,7 @@ public interface Wolf extends Tameable, Sittable {
      * @return the color of the collar
      */
     @NotNull
+    @Override // Paper
     public DyeColor getCollarColor();
 
     /**
@@ -41,6 +42,7 @@ public interface Wolf extends Tameable, Sittable {
      *
      * @param color the color to apply
      */
+    @Override // Paper
     public void setCollarColor(@NotNull DyeColor color);
 
     /**

paper-api/src/main/java/org/bukkit/event/entity/SheepDyeWoolEvent.java

@@ -11,11 +11,8 @@ import org.jetbrains.annotations.Nullable;
 /**
  * Called when a sheep's wool is dyed
  */
-public class SheepDyeWoolEvent extends EntityEvent implements Cancellable {
+public class SheepDyeWoolEvent extends io.papermc.paper.event.entity.EntityDyeEvent implements Cancellable {
-    private static final HandlerList handlers = new HandlerList();
+    // Paper - move everything to superclass
-    private boolean cancel;
-    private DyeColor color;
-    private final Player player;
 
     @Deprecated(since = "1.17.1")
     public SheepDyeWoolEvent(@NotNull final Sheep sheep, @NotNull final DyeColor color) {
@@ -23,20 +20,7 @@ public class SheepDyeWoolEvent extends EntityEvent implements Cancellable {
     }
 
     public SheepDyeWoolEvent(@NotNull final Sheep sheep, @NotNull final DyeColor color, @Nullable Player player) {
-        super(sheep);
+        super(sheep, color, player); // Paper
-        this.cancel = false;
-        this.color = color;
-        this.player = player;
-    }
-
-    @Override
-    public boolean isCancelled() {
-        return cancel;
-    }
-
-    @Override
-    public void setCancelled(boolean cancel) {
-        this.cancel = cancel;
     }
 
     @NotNull
@@ -44,45 +28,4 @@ public class SheepDyeWoolEvent extends EntityEvent implements Cancellable {
     public Sheep getEntity() {
         return (Sheep) entity;
     }
-
-    /**
-     * Returns the player dyeing the sheep, if available.
-     *
-     * @return player or null
-     */
-    @Nullable
-    public Player getPlayer() {
-        return player;
-    }
-
-    /**
-     * Gets the DyeColor the sheep is being dyed
-     *
-     * @return the DyeColor the sheep is being dyed
-     */
-    @NotNull
-    public DyeColor getColor() {
-        return color;
-    }
-
-    /**
-     * Sets the DyeColor the sheep is being dyed
-     *
-     * @param color the DyeColor the sheep will be dyed
-     */
-    public void setColor(@NotNull DyeColor color) {
-        this.color = color;
-    }
-
-    @NotNull
-    @Override
-    public HandlerList getHandlers() {
-        return handlers;
-    }
-
-    @NotNull
-    public static HandlerList getHandlerList() {
-        return handlers;
-    }
-
 }