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// Copyright © 2006-2010 Travis Robinson. All rights reserved.
//
// website: http://sourceforge.net/projects/libusbdotnet
// e-mail: libusbdotnet@gmail.com
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. or
// visit www.gnu.org.
//
//
using System;
using System.Collections;
using System.Collections.Generic;
using LibUsbDotNet.Main;
namespace MonoLibUsb.Profile
{
/// <summary>
/// Used to iterate through the <see cref="MonoUsbProfileHandle"/> collection contained in the <see cref="MonoUsbProfileListHandle"/>.
/// </summary>
/// <remarks>
/// <para>Wraps a device list handle into a <see cref="System.Runtime.ConstrainedExecution.CriticalFinalizerObject"/></para>
/// </remarks>
/// <seealso cref="MonoUsbProfileList"/>
public class MonoUsbProfileListHandle : SafeContextHandle, IEnumerable<MonoUsbProfileHandle>
{
private MonoUsbProfileListHandle()
: base(IntPtr.Zero) { }
internal MonoUsbProfileListHandle(IntPtr pHandleToOwn)
: base(pHandleToOwn) { }
#region IEnumerable<MonoUsbProfileHandle> Members
/// <summary>
/// Gets a forward-only device list enumerator.
/// </summary>
/// <returns>A profile handle enumerator used iterating through the <see cref="MonoUsbProfileHandle"/> classes.</returns>
public IEnumerator<MonoUsbProfileHandle> GetEnumerator() { return new MonoUsbProfileHandleEnumerator(this); }
IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); }
#endregion
/// <summary>
/// When overridden in a derived class, executes the code required to free the handle.
/// </summary>
/// <returns>
/// true if the handle is released successfully; otherwise, in the event of a catastrophic failure, false. In this case, it generates a ReleaseHandleFailed Managed Debugging Assistant.
/// </returns>
protected override bool ReleaseHandle()
{
if (!IsInvalid)
{
MonoUsbApi.FreeDeviceList(handle, 1);
//Console.WriteLine("FreeDeviceList:{0}", handle);
SetHandleAsInvalid();
}
return true;
}
}
}
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