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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;
namespace LibUsbDotNet.DeviceNotify.Linux
{
///<summary>
/// Creates an instance of the <see cref="LinuxDeviceNotifier"/> class.
/// See the <see cref="IDeviceNotifier"/> interface or <see cref="DeviceNotifier.OpenDeviceNotifier"/> method for more information
///</summary>
///<remarks>
///To make your code platform-independent use the <see cref="DeviceNotifier.OpenDeviceNotifier"/> method for creating instances.
///</remarks>
public partial class LinuxDeviceNotifier : IDeviceNotifier
{
private readonly LinuxDevItemList mLinuxDevItemList = new LinuxDevItemList();
private readonly LinuxDeviceNotifierMode mMode = LinuxDeviceNotifierMode.None;
/// <summary>
/// Creates a new instance of the LinuxDeviceNotifier using 'devDir' as the root device path. (IE. '/dev').
/// </summary>
/// <param name="devDir">The directory to monitor; usually '/dev'.</param>
public LinuxDeviceNotifier(string devDir)
{
mDevDir = devDir;
try
{
StartDevDirectoryMonitor();
if (mLinuxDevItemList.Count == 0) throw new NotSupportedException("LinuxDeviceNotifier:Dev directory monitor not supported.");
mMode = LinuxDeviceNotifierMode.MonitorDevDirectory;
return;
}
catch
{
StopDevDirectoryMonitor();
}
mMode = LinuxDeviceNotifierMode.PollDeviceList;
StartDeviceListPolling();
}
/// <summary>
/// Creates a new instance of the LinuxDeviceNotifier using '/dev' as the root device path.
/// </summary>
public LinuxDeviceNotifier()
: this("/dev") { }
///<summary>
/// Gets the mode being used to detect notification events.
///</summary>
public LinuxDeviceNotifierMode Mode
{
get { return mMode; }
}
#region IDeviceNotifier Members
///<summary>
/// Enables/Disables notification events.
///</summary>
public bool Enabled
{
get
{
switch (mMode)
{
case LinuxDeviceNotifierMode.PollDeviceList:
return mDeviceListPollTimer != null;
case LinuxDeviceNotifierMode.MonitorDevDirectory:
return mUsbFS != null;
default:
throw new ArgumentOutOfRangeException();
}
}
set
{
if (value)
Start();
else
Stop();
}
}
/// <summary>
/// Main Notify event for all device notifications.
/// </summary>
public event EventHandler<DeviceNotifyEventArgs> OnDeviceNotify;
#endregion
private void Stop()
{
switch (mMode)
{
case LinuxDeviceNotifierMode.PollDeviceList:
StopDeviceListPolling();
break;
case LinuxDeviceNotifierMode.MonitorDevDirectory:
StopDevDirectoryMonitor();
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private void Start()
{
switch (mMode)
{
case LinuxDeviceNotifierMode.PollDeviceList:
StartDeviceListPolling();
break;
case LinuxDeviceNotifierMode.MonitorDevDirectory:
StartDevDirectoryMonitor();
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
}
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