// Copyright (c) 2012, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must  retain  the  above copyright notice, this
//   list of conditions and the following disclaimer.
//
// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
//   this list of conditions  and  the  following  disclaimer in  the documentation
//   and/or other materials provided with the distribution.
//
// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
//   contributors may be used to endorse or  promote  products  derived  from  this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Xml;

namespace WebsitePanel.Setup
{
	public sealed class XmlUtils
	{
		private XmlUtils()
		{

		}

		/// <summary>
		/// Retrieves the specified attribute from the XML node.
		/// </summary>
		/// <param name="node">XML node.</param>
		/// <param name="attribute">Attribute to retreive.</param>
		/// <returns>Attribute value.</returns>
		internal static string GetXmlAttribute(XmlNode node, string attribute)
		{
			string ret = null;
			if (node != null)
			{
				XmlAttribute xmlAttribute = node.Attributes[attribute];
				if (xmlAttribute != null)
				{
					ret = xmlAttribute.Value;
				}
			}
			return ret;
		}

		internal static void SetXmlAttribute(XmlNode node, string attribute, string value)
		{
			if (node != null)
			{
				XmlAttribute xmlAttribute = node.Attributes[attribute];
				if (xmlAttribute == null)
				{
					xmlAttribute = node.OwnerDocument.CreateAttribute(attribute);
					node.Attributes.Append(xmlAttribute);
				}
				xmlAttribute.Value = value;
			}
		}


		internal static void RemoveXmlNode(XmlNode node)
		{
			if (node != null && node.ParentNode != null)
			{
				node.ParentNode.RemoveChild(node);
			}
		}
	}
}