SlotAcceptInsertable.java

package cofh.lib.gui.slot;

import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.item.ItemStack;

/**
 * Slot that will only accept ItemStacks when the IInventory returns true from isItemValidForSlot.
 * 
 * If an ISidedInventory, canInsertItem (from side 6 (UNKNOWN)) must also return true.
 */
public class SlotAcceptInsertable extends SlotAcceptValid {

	protected ISidedInventory sidedInv;

	public SlotAcceptInsertable(IInventory inventory, int index, int x, int y) {

		super(inventory, index, x, y);

		if (inventory instanceof ISidedInventory) {
			sidedInv = (ISidedInventory) inventory;
		} else {
			sidedInv = null;
		}
	}

	@Override
	public boolean isItemValid(ItemStack stack) {

		boolean valid = super.isItemValid(stack);

		return valid && sidedInv != null ? sidedInv.canInsertItem(slotNumber, stack, 6) : valid;
	}

}