Add functionality for interfaces

src/main/java/refinedstorage/container/ContainerBase.java

@@ -63,6 +63,10 @@ public abstract class ContainerBase extends Container
 
 		if (slot instanceof SlotSpecimen)
 		{
+			// @TODO: Put whole the stack if left click
+			// @TODO: Put one item from stack if right click
+			// @TODO: If item is already there, on left / right click add 1 or remove 1
+			// @TODO: If click with empty stack, empty it out
 			if (clickedButton == 2 || player.inventory.getItemStack() == null)
 			{
 				slot.putStack(null);

src/main/java/refinedstorage/tile/TileInterface.java

@@ -12,9 +12,6 @@ import refinedstorage.util.InventoryUtils;
 
 public class TileInterface extends TileMachine implements ISidedInventory
 {
-	// 1st row for import
-	// 2st row for specimen to export
-	// 3st row for export
 	private InventorySimple inventory = new InventorySimple("interface", 9 * 3);
 
 	@Override
@@ -26,6 +23,79 @@ public class TileInterface extends TileMachine implements ISidedInventory
 	@Override
 	public void updateMachine()
 	{
+		for (int i = 0; i < 9; ++i)
+		{
+			if (inventory.getStackInSlot(i) != null)
+			{
+				ItemStack slot = inventory.getStackInSlot(i);
+
+				if (getController().push(slot))
+				{
+					inventory.setInventorySlotContents(i, null);
+				}
+			}
+		}
+
+		for (int i = 9; i < 18; ++i)
+		{
+			ItemStack wanted = inventory.getStackInSlot(i);
+			ItemStack got = inventory.getStackInSlot(i + 9);
+
+			if (wanted != null)
+			{
+				boolean ok = false;
+
+				if (got != null)
+				{
+					if (!InventoryUtils.compareStackNoQuantity(wanted, got))
+					{
+						if (getController().push(got))
+						{
+							inventory.setInventorySlotContents(i + 9, null);
+						}
+					}
+					else
+					{
+						ok = true;
+					}
+				}
+				else
+				{
+					ok = true;
+				}
+
+				if (ok)
+				{
+					got = inventory.getStackInSlot(i + 9);
+
+					int needed = got == null ? wanted.stackSize : wanted.stackSize - got.stackSize;
+
+					ItemStack goingToTake = wanted.copy();
+					goingToTake.stackSize = needed;
+
+					ItemStack took = getController().take(goingToTake);
+
+					if (took != null)
+					{
+						if (got == null)
+						{
+							inventory.setInventorySlotContents(i + 9, took);
+						}
+						else
+						{
+							got.stackSize += took.stackSize;
+						}
+					}
+				}
+			}
+			else if (got != null)
+			{
+				if (getController().push(got))
+				{
+					inventory.setInventorySlotContents(i + 9, null);
+				}
+			}
+		}
 	}
 
 	@Override

src/main/java/refinedstorage/util/InventoryUtils.java

@@ -174,7 +174,7 @@ public class InventoryUtils
 
 		for (int i = 0; i < inventory.getSizeInventory(); ++i)
 		{
-			// @TODO: This is experimental
+			// @TODO: Test this better
 			if (!inventory.isItemValidForSlot(i, stack))
 			{
 				continue;