001package net.minecraft.inventory;
002
003import net.minecraft.entity.player.EntityPlayer;
004import net.minecraft.item.ItemStack;
005
006public class ContainerChest extends Container
007{
008    private IInventory lowerChestInventory;
009    private int numRows;
010
011    public ContainerChest(IInventory par1IInventory, IInventory par2IInventory)
012    {
013        this.lowerChestInventory = par2IInventory;
014        this.numRows = par2IInventory.getSizeInventory() / 9;
015        par2IInventory.openChest();
016        int i = (this.numRows - 4) * 18;
017        int j;
018        int k;
019
020        for (j = 0; j < this.numRows; ++j)
021        {
022            for (k = 0; k < 9; ++k)
023            {
024                this.addSlotToContainer(new Slot(par2IInventory, k + j * 9, 8 + k * 18, 18 + j * 18));
025            }
026        }
027
028        for (j = 0; j < 3; ++j)
029        {
030            for (k = 0; k < 9; ++k)
031            {
032                this.addSlotToContainer(new Slot(par1IInventory, k + j * 9 + 9, 8 + k * 18, 103 + j * 18 + i));
033            }
034        }
035
036        for (j = 0; j < 9; ++j)
037        {
038            this.addSlotToContainer(new Slot(par1IInventory, j, 8 + j * 18, 161 + i));
039        }
040    }
041
042    public boolean canInteractWith(EntityPlayer par1EntityPlayer)
043    {
044        return this.lowerChestInventory.isUseableByPlayer(par1EntityPlayer);
045    }
046
047    /**
048     * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that.
049     */
050    public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int par2)
051    {
052        ItemStack itemstack = null;
053        Slot slot = (Slot)this.inventorySlots.get(par2);
054
055        if (slot != null && slot.getHasStack())
056        {
057            ItemStack itemstack1 = slot.getStack();
058            itemstack = itemstack1.copy();
059
060            if (par2 < this.numRows * 9)
061            {
062                if (!this.mergeItemStack(itemstack1, this.numRows * 9, this.inventorySlots.size(), true))
063                {
064                    return null;
065                }
066            }
067            else if (!this.mergeItemStack(itemstack1, 0, this.numRows * 9, false))
068            {
069                return null;
070            }
071
072            if (itemstack1.stackSize == 0)
073            {
074                slot.putStack((ItemStack)null);
075            }
076            else
077            {
078                slot.onSlotChanged();
079            }
080        }
081
082        return itemstack;
083    }
084
085    /**
086     * Callback for when the crafting gui is closed.
087     */
088    public void onCraftGuiClosed(EntityPlayer par1EntityPlayer)
089    {
090        super.onCraftGuiClosed(par1EntityPlayer);
091        this.lowerChestInventory.closeChest();
092    }
093
094    /**
095     * Return this chest container's lower chest inventory.
096     */
097    public IInventory getLowerChestInventory()
098    {
099        return this.lowerChestInventory;
100    }
101}