#region Disclaimer / License
// Copyright (C) 2009, Kenneth Skovhede
// http://www.hexad.dk, opensource@hexad.dk
//
// 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Windows.Forms;
namespace Maestro.Login
{
///
/// A class that wraps the wait cursor into a disposable class, for use with deterministic disposal
///
public class WaitCursor
: IDisposable
{
private Form m_owner = null;
private Cursor m_oldcursor;
///
/// Initializes a new instance of the class.
///
/// The owner.
public WaitCursor(Form owner)
{
//This ensures that nested WaitCursors behave as expected.
//If we are the outermost WaitCursor, set the cursor
if (owner.Cursor != Cursors.WaitCursor)
{
m_oldcursor = owner.Cursor;
m_owner = owner;
m_owner.Cursor = Cursors.WaitCursor;
}
}
#region IDisposable Members
///
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
///
public void Dispose()
{
//If we are the the outermost WaitCursor, reset the cursor
if (m_owner != null && m_owner.Cursor == Cursors.WaitCursor)
{
m_owner.Cursor = m_oldcursor;
m_owner = null;
}
}
#endregion
}
}