Added a slot trait that intercepts clicks

build.gradle

@@ -14,7 +14,7 @@ buildscript {
 apply plugin: 'forge'
 apply plugin: 'scala'
 
-version = "0.9.4"
+version = "0.9.5"
 
 if (project.hasProperty('buildnum')) {
     project.version = project.version + '.' + project.buildnum

src/net/bdew/lib/gui/BaseContainer.scala

@@ -29,6 +29,15 @@ abstract class BaseContainer(te: IInventory) extends Container {
       addSlotToContainer(new Slot(inv, i, xOffs + i * 18, yOffsHotbar))
   }
 
+  override def slotClick(slotnum: Int, button: Int, modifiers: Int, player: EntityPlayer): ItemStack = {
+    if (inventorySlots.isDefinedAt(slotnum)) {
+      val slot = getSlot(slotnum)
+      if (slot != null && slot.isInstanceOf[SlotClickable])
+        return slot.asInstanceOf[SlotClickable].onClick(button, modifiers, player)
+    }
+    return super.slotClick(slotnum, button, modifiers, player)
+  }
+
   override def transferStackInSlot(player: EntityPlayer, slot: Int): ItemStack = {
     var stack = getSlot(slot).getStack
     if (getSlot(slot).inventory == player.inventory) {

src/net/bdew/lib/gui/SlotClickable.scala

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) bdew, 2013
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * https://raw.github.com/bdew/bdlib/master/MMPL-1.0.txt
+ */
+
+package net.bdew.lib.gui
+
+import net.minecraft.item.ItemStack
+import net.minecraft.inventory.Slot
+import net.minecraft.entity.player.EntityPlayer
+
+trait SlotClickable extends Slot {
+  def onClick(button: Int, mods: Int, player: EntityPlayer): ItemStack
+}