Inventory.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\inventory;
 
use pocketmine\item\Item;
use pocketmine\player\Player;
use pocketmine\utils\ObjectSet;
 
interface Inventory{
    public const MAX_STACK = 64;
 
    public function getSize() : int;
 
    public function getMaxStackSize() : int;
 
    public function setMaxStackSize(int $size) : void;
 
    public function getItem(int $index) : Item;
 
    public function setItem(int $index, Item $item) : void;
 
    public function getContents(bool $includeEmpty = false) : array;
 
    public function setContents(array $items) : void;
 
    public function addItem(Item ...$slots) : array;
 
    public function canAddItem(Item $item) : bool;
 
    public function getAddableItemQuantity(Item $item) : int;
 
    public function contains(Item $item) : bool;
 
    public function all(Item $item) : array;
 
    public function first(Item $item, bool $exact = false) : int;
 
    public function firstEmpty() : int;
 
    public function isSlotEmpty(int $index) : bool;
 
    public function remove(Item $item) : void;
 
    public function removeItem(Item ...$slots) : array;
 
    public function clear(int $index) : void;
 
    public function clearAll() : void;
 
    public function swap(int $slot1, int $slot2) : void;
 
    public function getViewers() : array;
 
    public function onOpen(Player $who) : void;
 
    public function onClose(Player $who) : void;
 
    public function slotExists(int $slot) : bool;
 
    public function getListeners() : ObjectSet;
}