Shift clicking in interface.

src/main/java/refinedstorage/container/ContainerInterface.java

@@ -2,6 +2,7 @@ package refinedstorage.container;
 
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
 import refinedstorage.container.slot.SlotOutput;
 import refinedstorage.container.slot.SlotSpecimen;
 import refinedstorage.tile.TileInterface;
@@ -29,4 +30,40 @@ public class ContainerInterface extends ContainerBase
 
 		addPlayerInventory(8, 136);
 	}
+
+	@Override
+	public ItemStack transferStackInSlot(EntityPlayer player, int index)
+	{
+		ItemStack stack = null;
+
+		Slot slot = getSlot(index);
+
+		if (slot != null && slot.getHasStack())
+		{
+			stack = slot.getStack().copy();
+
+			if (index < 9)
+			{
+				if (!mergeItemStack(stack, 9, inventorySlots.size(), true))
+				{
+					return null;
+				}
+			}
+			else if (!mergeItemStack(stack, 0, 9, false))
+			{
+				return null;
+			}
+
+			if (stack.stackSize == 0)
+			{
+				slot.putStack(null);
+			}
+			else
+			{
+				slot.onSlotChanged();
+			}
+		}
+
+		return stack;
+	}
 }