/*
 * GNU LESSER GENERAL PUBLIC LICENSE Copyright (C) 2006 The Lobo Project
 * 
 * This library 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 2.1 of
 * the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Contact info: xamjadmin@users.sourceforge.net
 */
/*
 * Created on Sep 3, 2005
 */
package org.cobra_grendel.html.domimpl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.cobra_grendel.js.AbstractScriptableDelegate;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

public class NamedNodeMapImpl extends AbstractScriptableDelegate implements NamedNodeMap
{
    /**
	 * 
	 */
    private static final long serialVersionUID = 1L;
    private final ArrayList attributeList = new ArrayList();
    // Note: class must be public for reflection to work.
    private final Map attributes = new HashMap();

    public NamedNodeMapImpl(final Element owner, final Map attribs, final int transactionId)
    {
        super(transactionId);
        Iterator i = attribs.entrySet().iterator();
        while (i.hasNext())
        {
            Map.Entry entry = (Map.Entry) i.next();
            String name = (String) entry.getKey();
            String value = (String) entry.getValue();
            // TODO: "specified" attributes
            Attr attr = new AttrImpl(name, value, true, owner, "ID".equals(name), transactionId);
            attributes.put(name, attr);
            attributeList.add(attr);
        }
    }

    @Override
    public int getLength()
    {
        return attributeList.size();
    }

    @Override
    public Node getNamedItem(final String name)
    {
        return (Node) attributes.get(name);
    }

    @Override
    public Node getNamedItemNS(final String namespaceURI, final String localName) throws DOMException
    {
        throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
    }

    @Override
    public Node item(final int index)
    {
        try
        {
            return (Node) attributeList.get(index);
        }
        catch (IndexOutOfBoundsException iob)
        {
            return null;
        }
    }

    /**
     * @param name
     */
    public Node namedItem(final String name)
    {
        // Method needed for Javascript indexing.
        return getNamedItem(name);
    }

    @Override
    public Node removeNamedItem(final String name) throws DOMException
    {
        return (Node) attributes.remove(name);
    }

    @Override
    public Node removeNamedItemNS(final String namespaceURI, final String localName) throws DOMException
    {
        throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
    }

    @Override
    public Node setNamedItem(final Node arg) throws DOMException
    {
        Object prevValue = attributes.put(arg.getNodeName(), arg);
        if (prevValue != null)
        {
            attributeList.remove(prevValue);
        }
        attributeList.add(arg);
        return arg;
    }

    @Override
    public Node setNamedItemNS(final Node arg) throws DOMException
    {
        throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
    }
}