/*
 * 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: lobochief@users.sourceforge.net
 */
/*
 * Created on Sep 3, 2005
 */
package com.nvarghese.beowulf.common.cobra.html.domimpl;

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

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;

import com.nvarghese.beowulf.common.cobra.js.AbstractScriptableDelegate;

public class NamedNodeMapImpl extends AbstractScriptableDelegate implements NamedNodeMap {

	// Note: class must be public for reflection to work.
	private final Map attributes = new HashMap();
	private final ArrayList attributeList = new ArrayList();

	public NamedNodeMapImpl(Element owner, Map attribs) {

		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));
			this.attributes.put(name, attr);
			this.attributeList.add(attr);
		}
	}

	public int getLength() {

		return this.attributeList.size();
	}

	public Node getNamedItem(String name) {

		return (Node) this.attributes.get(name);
	}

	/**
	 * @param name
	 */
	public Node namedItem(String name) {

		// Method needed for Javascript indexing.
		return this.getNamedItem(name);
	}

	public Node getNamedItemNS(String namespaceURI, String localName) throws DOMException {

		throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
	}

	public Node item(int index) {

		try {
			return (Node) this.attributeList.get(index);
		} catch (IndexOutOfBoundsException iob) {
			return null;
		}
	}

	public Node removeNamedItem(String name) throws DOMException {

		return (Node) this.attributes.remove(name);
	}

	public Node removeNamedItemNS(String namespaceURI, String localName) throws DOMException {

		throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
	}

	public Node setNamedItem(Node arg) throws DOMException {

		Object prevValue = this.attributes.put(arg.getNodeName(), arg);
		if (prevValue != null) {
			this.attributeList.remove(prevValue);
		}
		this.attributeList.add(arg);
		return arg;
	}

	public Node setNamedItemNS(Node arg) throws DOMException {

		throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "No namespace support");
	}
}