fancyholograms-v3: Add HologramTraitAttachedEvent

plugins/fancyholograms/fh-api/src/main/java/de/oliver/fancyholograms/api/events/HologramTraitAttachedEvent.java

@@ -0,0 +1,40 @@
+package de.oliver.fancyholograms.api.events;
+
+import de.oliver.fancyholograms.api.hologram.Hologram;
+import de.oliver.fancyholograms.api.trait.HologramTrait;
+import org.bukkit.Bukkit;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+public class HologramTraitAttachedEvent extends HologramEvent {
+
+    private static final HandlerList handlerList = new HandlerList();
+
+    @NotNull private final HologramTrait trait;
+    private final boolean isDefaultTrait;
+
+
+    public HologramTraitAttachedEvent(@NotNull final Hologram hologram, @NotNull final HologramTrait trait, boolean isDefaultTrait) {
+        super(hologram, !Bukkit.isPrimaryThread());
+        this.trait = trait;
+        this.isDefaultTrait = isDefaultTrait;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlerList;
+    }
+
+    public @NotNull HologramTrait getTrait() {
+        return trait;
+    }
+
+    public boolean isDefaultTrait() {
+        return isDefaultTrait;
+    }
+
+    @Override
+    public @NotNull HandlerList getHandlers() {
+        return handlerList;
+    }
+
+}

plugins/fancyholograms/fh-api/src/main/java/de/oliver/fancyholograms/api/trait/HologramTrait.java

@@ -50,6 +50,8 @@ public abstract class HologramTrait {
 
         this.hologram = hologram;
         this.storage = new JDB("plugins/FancyHolograms/data/traits/" + name);
+
+        onAttach();
     }
 
     /**
@@ -75,7 +77,6 @@ public abstract class HologramTrait {
      * Called when the hologram is registered in the registry.
      */
     public void onRegister() {
-
     }
 
     /**

plugins/fancyholograms/fh-api/src/main/java/de/oliver/fancyholograms/api/trait/HologramTraitTrait.java

@@ -1,5 +1,6 @@
 package de.oliver.fancyholograms.api.trait;
 
+import de.oliver.fancyholograms.api.events.HologramTraitAttachedEvent;
 import de.oliver.fancyholograms.api.hologram.Hologram;
 import org.bukkit.entity.Player;
 
@@ -15,17 +16,20 @@ public class HologramTraitTrait extends HologramTrait {
         super("trait");
         this.traits = new ArrayList<>();
         attachHologram(hologram);
-        onAttach();
     }
 
     public void addTrait(HologramTrait trait) {
-        this.traits.add(trait);
+        if (!new HologramTraitAttachedEvent(hologram, trait, false).callEvent()) {
+            return;
+        }
+
         trait.attachHologram(hologram);
-        trait.onAttach();
+        this.traits.add(trait);
     }
 
     @Override
     public void onAttach() {
+        // Attach all default traits to the hologram
         Set<Class<? extends HologramTrait>> registeredTraits = api.getTraitRegistry().getRegisteredTraits();
         for (Class<? extends HologramTrait> traitClass : registeredTraits) {
             if (!traitClass.isAnnotationPresent(DefaultTrait.class)) {
@@ -34,8 +38,11 @@ public class HologramTraitTrait extends HologramTrait {
 
             try {
                 HologramTrait trait = traitClass.getConstructor().newInstance();
+                if (!new HologramTraitAttachedEvent(hologram, trait, false).callEvent()) {
+                    continue;
+                }
+
                 trait.attachHologram(hologram);
-                trait.onAttach();
                 this.traits.add(trait);
             } catch (Exception e) {
                 logger.error("Failed to instantiate trait " + traitClass.getName());