100 lines
2.6 KiB
Java
100 lines
2.6 KiB
Java
/*
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* Copyright (C) 2004-2015 L2J Server
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*
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* This file is part of L2J Server.
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*
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* L2J Server is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* L2J Server is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jserver.gameserver.handler;
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import java.util.HashMap;
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import java.util.Map;
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import com.l2jserver.gameserver.model.items.L2EtcItem;
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/**
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* This class manages handlers of items
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* @author UnAfraid
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*/
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public class ItemHandler implements IHandler<IItemHandler, L2EtcItem>
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{
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private final Map<String, IItemHandler> _datatable;
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/**
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* Constructor of ItemHandler
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*/
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protected ItemHandler()
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{
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_datatable = new HashMap<>();
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}
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/**
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* Adds handler of item type in <I>datatable</I>.<BR>
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* <BR>
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* <B><I>Concept :</I></U><BR>
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* This handler is put in <I>datatable</I> Map <String ; IItemHandler > for each ID corresponding to an item type (existing in classes of package itemhandlers) sets as key of the Map.
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* @param handler (IItemHandler)
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*/
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@Override
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public void registerHandler(IItemHandler handler)
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{
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_datatable.put(handler.getClass().getSimpleName(), handler);
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}
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@Override
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public synchronized void removeHandler(IItemHandler handler)
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{
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_datatable.remove(handler.getClass().getSimpleName());
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}
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/**
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* Returns the handler of the item
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* @param item
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* @return IItemHandler
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*/
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@Override
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public IItemHandler getHandler(L2EtcItem item)
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{
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if ((item == null) || (item.getHandlerName() == null))
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{
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return null;
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}
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return _datatable.get(item.getHandlerName());
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}
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/**
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* Returns the number of elements contained in datatable
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* @return int : Size of the datatable
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*/
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@Override
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public int size()
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{
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return _datatable.size();
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}
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/**
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* Create ItemHandler if doesn't exist and returns ItemHandler
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* @return ItemHandler
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*/
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public static ItemHandler getInstance()
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{
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return SingletonHolder._instance;
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}
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private static class SingletonHolder
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{
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protected static final ItemHandler _instance = new ItemHandler();
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}
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}
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