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 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * OpenOffice.org - a multi-platform office productivity suite
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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 *
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package com.sun.star.xml.security.uno;

import org.w3c.dom.Node;
import org.w3c.dom.Attr;
import org.w3c.dom.NamedNodeMap;


/*
 * This class wraps a DOM node and returns the text we want to
 * display in the tree. It also returns children, index values,
 * and child counts.
 */
class AdapterNode 
{ 
	private Node m_domNode;
	static final int ELEMENT_TYPE =   Node.ELEMENT_NODE;
	
	/*
	 * An array of names for DOM node-types
	 */
	static final String[] typeName = {
		"none",
		"Element",
		"Attr",
		"Text",
		"CDATA",
		"EntityRef",
		"Entity",
		"ProcInstr",
		"Comment",
		"Document",
		"DocType",
		"DocFragment",
		"Notation",
		};
	
	protected Node getNode()
	{
		return m_domNode;
	}
	
	/*
	 * Construct an Adapter node from a DOM node
	 */
	protected AdapterNode(org.w3c.dom.Node node) 
	{
		m_domNode = node;
	}
	
	/*
	 * Return children, index, and count values
	 */
	protected int index(AdapterNode child) 
	{
		int count = childCount();
		for (int i=0; i<count; ++i) 
		{
			AdapterNode n = this.child(i);
			if (child.m_domNode == n.m_domNode) return i;
		}
		return -1;
	}
	
	protected AdapterNode child(int searchIndex) 
	{
		if (m_domNode == null) return null;
		
		/*
		 * Note: JTree index is zero-based. 
		 */
		org.w3c.dom.Node node = 
			m_domNode.getChildNodes().item(searchIndex);
			
		return new AdapterNode(node); 
	}
	
	protected int childCount() 
	{
		int rc = 0;
		
		if (m_domNode != null)
		{
			rc = m_domNode.getChildNodes().getLength();
		}
		
		return rc;
	}
	
	/*
	 * Return a string that identifies this node in the tree
	 */
	public String toString() 
	{
		String rc = null;
		
		if (m_domNode != null)
		{
			String s = typeName[m_domNode.getNodeType()];
			String nodeName = m_domNode.getNodeName();
			
			if (! nodeName.startsWith("#")) 
			{
				s += ": " + nodeName;
			}
			
			if (m_domNode.getNodeValue() != null) 
			{
				if (s.startsWith("ProcInstr")) 
				{
					s += ", "; 
				}
				else 
				{
					s += ": ";
				}
				
				String t = m_domNode.getNodeValue();
				s += t;
			}
			
			if (m_domNode.getNodeType() == ELEMENT_TYPE)
			{
				NamedNodeMap attrs = m_domNode.getAttributes();
				
				int length = attrs.getLength();
				for (int i=0; i<length; ++i)
				{
					Attr attr = (Attr)(attrs.item(i));
					s += " "+ attr.getName()+"='"+attr.getValue() + "'"; 
				}
			}
			rc = s;
		}
		
		return rc;
	}
}