gistfile1.txt

import java.util.HashMap;

import org.bukkit.Bukkit;
import org.bukkit.entity.HumanEntity;
import org.bukkit.entity.Player;
import org.bukkit.event.inventory.InventoryAction;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryHolder;

public class Menu implements InventoryHolder
{
	private Menu parent;
	private Inventory inventory;
	private boolean closeOnClickOutside;
	private HashMap<Integer, MenuItem> items;

	public Menu(Menu menu, String title, int rows)
	{
		this(title, rows);
		this.parent = menu;
	}

	public Menu(String title, int rows)
	{
		this.inventory = Bukkit.createInventory(this, rows * 9, title);
		this.closeOnClickOutside = false;
		this.items = new HashMap<Integer, MenuItem>();
	}

	public Menu(String title)
	{
		this(title, 1);
	}

	@Override
	public Inventory getInventory()
	{
		return inventory;
	}

	public int getSize()
	{
		return inventory.getSize();
	}

	public Menu getParent()
	{
		return parent;
	}

	public MenuItem getItem(int slot)
	{
		return items.get(slot);
	}

	public void setCloseOnClickOutside(boolean bool)
	{
		this.closeOnClickOutside = bool;
	}

	public void addItem(int slot, MenuItem item)
	{
		item.setMenu(this);
		items.put(slot, item);
		update();
	}

	public void removeItem(int slot)
	{
		items.remove(slot);
		update();
	}

	public void open(HumanEntity human)
	{
		human.openInventory(inventory);
	}

	public void close(HumanEntity human)
	{
		human.closeInventory();
	}

	public void onClick(Player player, InventoryAction actionType, int slot)
	{
		// Check to see if there is a valid item in the slot clicked
		if (isItemInSlot(slot))
		{
			MenuItem menuItem = getItem(slot);
			// Before calling the menu item's click handler lets make sure it
			// has one!
			if (menuItem.hasClickHandler())
			{
				menuItem.getClickHandler()
						.onClick(menuItem, player, actionType);
			}
			// After the menu item has been clicked should we close the
			// inventory?
			if (menuItem.shouldCloseMenuOnSelection())
			{
				close(player);
			}
		}
	}

	@SuppressWarnings("deprecation")
	public void update()
	{
		inventory.clear();
		for (int slot : items.keySet())
		{
			MenuItem menuItem = getItem(slot);
			inventory.setItem(slot, menuItem.getIcon());
		}
		for (HumanEntity human : inventory.getViewers())
		{
			if (human instanceof Player)
			{
				Player player = (Player) human;
				player.updateInventory();
			}
		}
	}

	public void cleanUp()
	{
		items.clear();
		items = null;
		inventory = null;
		parent = null;
	}

	public boolean closeOnClickOutside()
	{
		return closeOnClickOutside;
	}

	public boolean isItemInSlot(int slot)
	{
		return getItem(slot) != null;
	}

	public boolean hasParent()
	{
		return getParent() != null;
	}
}