content: package net.minecraft.inventory;
  
  import net.minecraft.entity.player.EntityPlayer;
  import net.minecraft.entity.player.InventoryPlayer;
  import net.minecraft.item.ItemStack;
  import net.minecraft.item.crafting.FurnaceRecipes;
  import net.minecraft.tileentity.TileEntityFurnace;
  
  public class ContainerFurnace extends Container {
      public final IInventory tileFurnace;
      private int cookTime;
      private int totalCookTime;
      private int furnaceBurnTime;
      private int currentItemBurnTime;
  
      public ContainerFurnace(InventoryPlayer playerInventory, IInventory furnaceInventory) {
          this.tileFurnace = furnaceInventory;
          this.addSlotToContainer(new Slot(furnaceInventory, 0, 56, 17));
          this.addSlotToContainer(new SlotFurnaceFuel(furnaceInventory, 1, 56, 53));
          this.addSlotToContainer(new SlotFurnaceOutput(playerInventory.player, furnaceInventory, 2, 116, 35));
  
          for (int i = 0; i < 3; ++i) {
              for (int j = 0; j < 9; ++j) {
                  this.addSlotToContainer(new Slot(playerInventory, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
              }
          }
  
          for (int k = 0; k < 9; ++k) {
              this.addSlotToContainer(new Slot(playerInventory, k, 8 + k * 18, 142));
          }
      }
  
      public void onCraftGuiOpened(ICrafting listener) {
          super.onCraftGuiOpened(listener);
          listener.sendAllWindowProperties(this, this.tileFurnace);
      }
  
      public void detectAndSendChanges() {
          super.detectAndSendChanges();
  
          for (int i = 0; i < this.crafters.size(); ++i) {
              ICrafting icrafting = this.crafters.get(i);
  
              if (this.cookTime != this.tileFurnace.getField(2)) {
                  icrafting.sendProgressBarUpdate(this, 2, this.tileFurnace.getField(2));
              }
  
              if (this.furnaceBurnTime != this.tileFurnace.getField(0)) {
                  icrafting.sendProgressBarUpdate(this, 0, this.tileFurnace.getField(0));
              }
  
              if (this.currentItemBurnTime != this.tileFurnace.getField(1)) {
                  icrafting.sendProgressBarUpdate(this, 1, this.tileFurnace.getField(1));
              }
  
              if (this.totalCookTime != this.tileFurnace.getField(3)) {
                  icrafting.sendProgressBarUpdate(this, 3, this.tileFurnace.getField(3));
              }
          }
  
          this.cookTime = this.tileFurnace.getField(2);
          this.furnaceBurnTime = this.tileFurnace.getField(0);
          this.currentItemBurnTime = this.tileFurnace.getField(1);
          this.totalCookTime = this.tileFurnace.getField(3);
      }
  
      public void updateProgressBar(int id, int data) {
          this.tileFurnace.setField(id, data);
      }
  
      public boolean canInteractWith(EntityPlayer playerIn) {
          return this.tileFurnace.isUseableByPlayer(playerIn);
      }
  
      public ItemStack transferStackInSlot(EntityPlayer playerIn, int index) {
          ItemStack itemstack = null;
          Slot slot = this.inventorySlots.get(index);
  
          if (slot != null && slot.getHasStack()) {
              ItemStack itemstack1 = slot.getStack();
              itemstack = itemstack1.copy();
  
              if (index == 2) {
                  if (!this.mergeItemStack(itemstack1, 3, 39, true)) {
                      return null;
                  }
  
                  slot.onSlotChange(itemstack1, itemstack);
              } else if (index != 1 && index != 0) {
                  if (FurnaceRecipes.instance().getSmeltingResult(itemstack1) != null) {
                      if (!this.mergeItemStack(itemstack1, 0, 1, false)) {
                          return null;
                      }
                  } else if (TileEntityFurnace.isItemFuel(itemstack1)) {
                      if (!this.mergeItemStack(itemstack1, 1, 2, false)) {
                          return null;
                      }
                  } else if (index >= 3 && index < 30) {
                      if (!this.mergeItemStack(itemstack1, 30, 39, false)) {
                          return null;
                      }
                  } else if (index >= 30 && index < 39 && !this.mergeItemStack(itemstack1, 3, 30, false)) {
                      return null;
                  }
              } else if (!this.mergeItemStack(itemstack1, 3, 39, false)) {
                  return null;
              }
  
              if (itemstack1.stackSize == 0) {
                  slot.putStack(null);
              } else {
                  slot.onSlotChanged();
              }
  
              if (itemstack1.stackSize == itemstack.stackSize) {
                  return null;
              }
  
              slot.onPickupFromSlot(playerIn, itemstack1);
          }
  
          return itemstack;
      }
  }
  