SPIGOT-5950: Add PrepareSmithingEvent event

nms-patches/ContainerSmithing.patch

@@ -18,6 +18,21 @@
  
      public ContainerSmithing(int i, PlayerInventory playerinventory) {
          this(i, playerinventory, ContainerAccess.a);
+@@ -52,12 +57,12 @@
+         List<RecipeSmithing> list = this.g.getCraftingManager().b(Recipes.SMITHING, this.repairInventory, this.g);
+ 
+         if (list.isEmpty()) {
+-            this.resultInventory.setItem(0, ItemStack.b);
++            org.bukkit.craftbukkit.event.CraftEventFactory.callPrepareSmithingEvent(getBukkitView(), ItemStack.b); // CraftBukkit
+         } else {
+             this.h = (RecipeSmithing) list.get(0);
+             ItemStack itemstack = this.h.a(this.repairInventory);
+ 
+-            this.resultInventory.setItem(0, itemstack);
++            org.bukkit.craftbukkit.event.CraftEventFactory.callPrepareSmithingEvent(getBukkitView(), itemstack); // CraftBukkit
+         }
+ 
+     }
 @@ -68,4 +73,18 @@
              return recipesmithing.a(itemstack);
          });

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

@@ -188,6 +188,7 @@ import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.event.inventory.InventoryOpenEvent;
 import org.bukkit.event.inventory.PrepareAnvilEvent;
 import org.bukkit.event.inventory.PrepareItemCraftEvent;
+import org.bukkit.event.inventory.PrepareSmithingEvent;
 import org.bukkit.event.inventory.TradeSelectEvent;
 import org.bukkit.event.player.PlayerBedEnterEvent;
 import org.bukkit.event.player.PlayerBedEnterEvent.BedEnterResult;
@@ -1413,6 +1414,13 @@ public class CraftEventFactory {
         return event;
     }
 
+    public static PrepareSmithingEvent callPrepareSmithingEvent(InventoryView view, ItemStack item) {
+        PrepareSmithingEvent event = new PrepareSmithingEvent(view, CraftItemStack.asCraftMirror(item).clone());
+        event.getView().getPlayer().getServer().getPluginManager().callEvent(event);
+        event.getInventory().setItem(2, event.getResult());
+        return event;
+    }
+
     public static EntityToggleGlideEvent callToggleGlideEvent(EntityLiving entity, boolean gliding) {
         EntityToggleGlideEvent event = new EntityToggleGlideEvent((LivingEntity) entity.getBukkitEntity(), gliding);
         entity.world.getServer().getPluginManager().callEvent(event);