/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


package com.sun.star.xml.security.uno;

import java.util.Vector;
import com.sun.star.xml.sax.XAttributeList;

/**
 * Class to construct an attribute list, and provide a XAttributeList
 * interface.
 *
 * @author      Michael Mi
 * @version     %I%, %G%
 */
public class AttributeListHelper implements com.sun.star.xml.sax.XAttributeList
{
	private Vector m_AttributeList;
		
	public AttributeListHelper()
	{
		m_AttributeList = new Vector();
	}

	public void clear()
	{
		m_AttributeList.removeAllElements();
	}

	public void setAttribute(String name, String type, String value)
	{
		int nLength = m_AttributeList.size();
		boolean bFound = false;
		
		for (int i=0; i<nLength; ++i)
		{
			if (getNameByIndex((short)i).equals(name))
			{
				Vector attribute = (Vector)m_AttributeList.get(i);
				attribute.setElementAt(type,1);
				attribute.setElementAt(value,2);
				bFound = true;
				break;
			}
		}
		
		if (!bFound)
		{
			Vector attribute = new Vector();
			attribute.addElement(name);
			attribute.addElement(type);
			attribute.addElement(value);
			m_AttributeList.addElement(attribute);
		}
	}

	public String getAttributeItem(short index, int itemIndex)
	{
		String item = null;
		
		if (index>=0 && index<getLength())
		{
			Vector attribute = (Vector)m_AttributeList.get(index);
			item = (String)(attribute.get(itemIndex));
		}
		
		return item;
	}
	
	/* XAttributeList */
	public short getLength()
	{
		return (short)m_AttributeList.size();
	}
	
	public String getNameByIndex(short i)
	{
		return getAttributeItem(i, 0);
	}

	public String getTypeByIndex(short i)
	{
		return getAttributeItem(i, 1);
	}

	public String getValueByIndex(short i)
	{
		return getAttributeItem(i, 2);
	}
	
	public String getTypeByName(String aName)
	{
		int nLength = m_AttributeList.size();
		String type = null;
		
		for (int i=0; i<nLength; ++i)
		{
			if (getNameByIndex((short)i).equals(aName))
			{
				type = getTypeByIndex((short)i);
				break;
			}
		}
		
		return type;
	}
		
	public String getValueByName(String aName)
	{
		int nLength = m_AttributeList.size();
		String value = null;
		
		for (int i=0; i<nLength; ++i)
		{
			if (getNameByIndex((short)i).equals(aName))
			{
				value = getValueByIndex((short)i);
				break;
			}
		}
		return value;
	}
}