Added ItemDespawnEvent

src/main/java/net/minecraft/server/EntityItem.java

@@ -1,6 +1,9 @@
 package net.minecraft.server;
 
-import org.bukkit.event.player.PlayerPickupItemEvent; // CraftBukkit
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.player.PlayerPickupItemEvent;
+// CraftBukkit End
 
 public class EntityItem extends Entity {
 
@@ -83,6 +86,12 @@ public class EntityItem extends Entity {
         ++this.e;
         ++this.b;
         if (this.b >= 6000) {
+            // CraftBukkit start
+            if(CraftEventFactory.callItemDespawnEvent(this).isCancelled()) {
+                this.b = 0;
+                return;
+            }
+            // CraftBukkit end
             this.die();
         }
     }

src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -141,7 +141,6 @@ public class CraftEventFactory {
     /**
      * Player Interact event
      */
-
     public static PlayerInteractEvent callPlayerInteractEvent(EntityHuman who, Action action, ItemStack itemstack) {
         if (action != Action.LEFT_CLICK_AIR && action != Action.RIGHT_CLICK_AIR) {
             throw new IllegalArgumentException();
@@ -286,6 +285,18 @@ public class CraftEventFactory {
         return event;
     }
 
+    /**
+     * ItemDespawnEvent
+     */
+    public static ItemDespawnEvent callItemDespawnEvent(EntityItem entityitem) {
+        org.bukkit.entity.Entity entity = entityitem.getBukkitEntity();
+
+        ItemDespawnEvent event = new ItemDespawnEvent(entity, entity.getLocation());
+
+        ((CraftServer) entity.getServer()).getPluginManager().callEvent(event);
+        return event;
+    }
+
     /**
      * BlockFadeEvent
      */