equivalent-exchange-3/src/main/java/com/pahimar/ee3/inventory/InventoryAlchenomicon.java

package com.pahimar.ee3.inventory;

import java.util.Set;
import java.util.TreeSet;

import com.pahimar.ee3.reference.Comparators;
import com.pahimar.ee3.reference.Names;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;

public class InventoryAlchenomicon implements IInventory {
    private ItemStack[] inventory;
    private Set<ItemStack> knownTransmutations;

    public InventoryAlchenomicon(Set<ItemStack> knownTransmutations) {
        inventory = new ItemStack[80];
        if (knownTransmutations != null) {
            this.knownTransmutations = knownTransmutations;
        } else {
            this.knownTransmutations = new TreeSet<ItemStack>(Comparators.ID_COMPARATOR);
        }
        inventory = knownTransmutations.toArray(inventory);
    }

    @Override
    public int getSizeInventory() {
        return inventory.length;
    }

    @Override
    public ItemStack getStackInSlot(int slotIndex) {
        if (slotIndex < getSizeInventory()) {
            return inventory[slotIndex];
        }

        return null;
    }

    @Override
    public ItemStack decrStackSize(int slotIndex, int decrementAmount) {
        ItemStack itemStack = getStackInSlot(slotIndex);
        if (itemStack != null) {
            if (itemStack.stackSize <= decrementAmount) {
                setInventorySlotContents(slotIndex, null);
            } else {
                itemStack = itemStack.splitStack(decrementAmount);
                if (itemStack.stackSize == 0) {
                    setInventorySlotContents(slotIndex, null);
                }
            }
        }

        return itemStack;
    }

    @Override
    public ItemStack getStackInSlotOnClosing(int slotIndex) {
        if (getStackInSlot(slotIndex) != null) {
            ItemStack itemStack = inventory[slotIndex];
            inventory[slotIndex] = null;
            return itemStack;
        } else {
            return null;
        }
    }

    @Override
    public void setInventorySlotContents(int slotIndex, ItemStack itemStack) {
        if (slotIndex < inventory.length) {
            inventory[slotIndex] = itemStack;
        }
    }

    @Override
    public String getInventoryName() {
        return Names.Containers.ALCHENOMICON;
    }

    @Override
    public boolean hasCustomInventoryName() {
        return false;
    }

    @Override
    public int getInventoryStackLimit() {
        return 64;
    }

    @Override
    public void markDirty() {
        // NOOP
    }

    @Override
    public boolean isUseableByPlayer(EntityPlayer entityPlayer) {
        return true;
    }

    @Override
    public void openInventory() {
        // NOOP
    }

    @Override
    public void closeInventory() {
        // NOOP
    }

    @Override
    public boolean isItemValidForSlot(int slotIndex, ItemStack itemStack) {
        return false;
    }

    public Set<ItemStack> getKnownTransmutations() {
        return knownTransmutations;
    }
}