def GetCurrentItemGrid(self):
        itemGrid = [[False for cell in xrange(player.INVENTORY_PAGE_SIZE)] for page in xrange(player.INVENTORY_PAGE_COUNT)]
        for page in xrange(player.INVENTORY_PAGE_COUNT):
            for cell in xrange(player.INVENTORY_PAGE_SIZE):
                realCell = page * player.INVENTORY_PAGE_SIZE + cell
                itemVnum = player.GetItemIndex(realCell)
                if itemVnum != 0:
                    item.SelectItem(itemVnum)
                    (width, height) = item.GetItemSize()
                    for i in xrange(height):
                        itemGrid[page][cell + (i * 5)] = True
        return itemGrid

    def FindEmptyCellForSize(self, itemGrid, size):
        for page in xrange(player.INVENTORY_PAGE_COUNT):
            for cell in xrange(player.INVENTORY_PAGE_SIZE):
                if itemGrid[page][cell] == False:
                    check = True
                    for i in xrange(size):
                        checkCell = cell + 5 * i
                        try:
                            if itemGrid[page][checkCell] == True:
                                check = False
                                break
                        except IndexError:
                            check = False
                            break

                    if check:
                        return cell + page * player.INVENTORY_PAGE_SIZE
        return -1

    def __CanStackItem(self, itemVnum):
        item.SelectItem(itemVnum)
        if item.IsFlag(item.ITEM_FLAG_STACKABLE) and not item.IsAntiFlag(item.ITEM_ANTIFLAG_STACK):
            return True

        return False

    def __OnClickSortButton(self):
        inventoryCopy = []
        for cell in xrange(player.INVENTORY_PAGE_COUNT * player.INVENTORY_PAGE_SIZE):
            itemVnum = player.GetItemIndex(cell)
            if itemVnum != 0:
                inventoryCopy.append({"vnum" : itemVnum, "count" : player.GetItemCount(cell), "cell" : cell})
            else:
                inventoryCopy.append({"vnum" : 0, "count" : 0, "cell" : cell})

        itemGrid = self.GetCurrentItemGrid()

        for page in xrange(player.INVENTORY_PAGE_COUNT):
            for cell in xrange(player.INVENTORY_PAGE_SIZE):
                realCell = page * player.INVENTORY_PAGE_SIZE + cell
                itemVnum = inventoryCopy[realCell]["vnum"]
                itemCount = inventoryCopy[realCell]["count"]
                metinSlot = [player.GetItemMetinSocket(realCell, i) for i in xrange(player.METIN_SOCKET_MAX_NUM)]

                if itemVnum == 0 or itemCount >= 200 or not self.__CanStackItem(itemVnum):
                    continue

                for checkCell in xrange(realCell):
                    checkItemVnum = inventoryCopy[checkCell]["vnum"]
                    checkItemCount = inventoryCopy[checkCell]["count"]
                    checkMetinSlot = [player.GetItemMetinSocket(checkCell, i) for i in xrange(player.METIN_SOCKET_MAX_NUM)]

                    if checkItemVnum == 0 or checkItemCount >= 200 or not self.__CanStackItem(checkItemVnum) or checkMetinSlot != metinSlot or checkItemVnum != itemVnum:
                        continue

                    self.__SendMoveItemPacket(realCell, checkCell, itemCount)

                    inventoryCopy[realCell]["count"] -= 200 - checkItemCount
                    inventoryCopy[checkCell]["count"] = min(200, checkItemCount + itemCount)

                    if inventoryCopy[realCell]["count"] <= 0:
                        inventoryCopy[realCell]["vnum"] = 0
                        inventoryCopy[realCell]["count"] = 0
                        itemGrid[page][cell] = False
                    else:
                        item.SelectItem(itemVnum)
                        emptyCell = self.FindEmptyCellForSize(itemGrid, item.GetItemSize()[1])
                        self.__SendMoveItemPacket(realCell, emptyCell, itemCount)

                        item.SelectItem(inventoryCopy[realCell]["vnum"])
                        (width, height) = item.GetItemSize()
                        inventoryCopy[emptyCell]["vnum"] = inventoryCopy[realCell]["vnum"]
                        inventoryCopy[emptyCell]["count"] = inventoryCopy[realCell]["count"]
                        inventoryCopy[emptyCell]["cell"] = realCell
                        inventoryCopy[realCell]["vnum"] = 0
                        inventoryCopy[realCell]["count"] = 0
                        for i in xrange(height):
                            itemGrid[page][cell + i * 5] = False
                            itemGrid[page][cell + i * 5] = True
                    break