// 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
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Windows.Forms;
using System.Xml;

namespace WebsitePanel.Setup
{
	/// <summary>
	/// Shows rollback process.
	/// </summary>
	public sealed class RollBackProcess
	{
		private ProgressBar progressBar;
		
		/// <summary>
		/// Initializes a new instance of the class.
		/// </summary>
		/// <param name="bar">Progress bar.</param>
		public RollBackProcess(ProgressBar bar)
		{
			this.progressBar = bar;
		}

		/// <summary>
		/// Runs rollback process.
		/// </summary>
		internal void Run()
		{
			progressBar.Minimum = 0;
			progressBar.Maximum = 100;
			progressBar.Value = 0;

			int actions = RollBack.Actions.Count;
			for ( int i=0; i<actions; i++ )
			{
				//reverse order
				XmlNode action = RollBack.Actions[actions-i-1];
				try
				{
					RollBack.ProcessAction(action);
				}
				catch
				{}
				progressBar.Value = Convert.ToInt32(i*100/actions);
			}
		}
	}
}