diff -r be9534663a55 -r 04dbd92d1116 Wmi/WmiProvider.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Wmi/WmiProvider.cs	Sat Oct 16 18:24:20 2010 +0000
@@ -0,0 +1,142 @@
+/*
+  
+  Version: MPL 1.1/GPL 2.0/LGPL 2.1
+
+  The contents of this file are subject to the Mozilla Public License Version
+  1.1 (the "License"); you may not use this file except in compliance with
+  the License. You may obtain a copy of the License at
+ 
+  http://www.mozilla.org/MPL/
+
+  Software distributed under the License is distributed on an "AS IS" basis,
+  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+  for the specific language governing rights and limitations under the License.
+
+  The Original Code is the Open Hardware Monitor code.
+
+  The Initial Developer of the Original Code is 
+  Paul Werelds <paul@werelds.net>.
+  Portions created by the Initial Developer are Copyright (C) 2009-2010
+  the Initial Developer. All Rights Reserved.
+
+  Contributor(s):
+
+  Alternatively, the contents of this file may be used under the terms of
+  either the GNU General Public License Version 2 or later (the "GPL"), or
+  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+  in which case the provisions of the GPL or the LGPL are applicable instead
+  of those above. If you wish to allow use of your version of this file only
+  under the terms of either the GPL or the LGPL, and not to allow others to
+  use your version of this file under the terms of the MPL, indicate your
+  decision by deleting the provisions above and replace them with the notice
+  and other provisions required by the GPL or the LGPL. If you do not delete
+  the provisions above, a recipient may use your version of this file under
+  the terms of any one of the MPL, the GPL or the LGPL.
+ 
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Management.Instrumentation;
+using OpenHardwareMonitor.Hardware;
+using OpenHardwareMonitor.Wmi;
+
+[assembly: Instrumented("root/OpenHardwareMonitor")]
+
+[System.ComponentModel.RunInstaller(true)]
+public class InstanceInstaller : DefaultManagementProjectInstaller { }
+
+namespace OpenHardwareMonitor.Wmi {
+  /// <summary>
+  /// The WMI Provider.
+  /// This class is not exposed to WMI itself.
+  /// </summary>
+  public class WmiProvider : IDisposable {
+    private List<IWmiObject> activeInstances;
+
+    public WmiProvider(IComputer computer) {
+      activeInstances = new List<IWmiObject>();
+
+      foreach (IHardware hardware in computer.Hardware)
+        ComputerHardwareAdded(hardware);
+
+      computer.HardwareAdded += ComputerHardwareAdded;
+      computer.HardwareRemoved += ComputerHardwareRemoved;
+    }
+
+    public void Update() {
+      foreach (IWmiObject instance in activeInstances)
+        instance.Update();
+    }
+
+    #region Eventhandlers
+    
+    private void ComputerHardwareAdded(IHardware hardware) {
+      if (!Exists(hardware.Identifier.ToString())) {
+        foreach (ISensor sensor in hardware.Sensors)
+          HardwareSensorAdded(sensor);
+
+        hardware.SensorAdded += HardwareSensorAdded;
+        hardware.SensorRemoved += HardwareSensorRemoved;
+
+        Hardware hw = new Hardware(hardware);
+        activeInstances.Add(hw);
+
+        Instrumentation.Publish(hw);
+      }
+
+      foreach (IHardware subHardware in hardware.SubHardware)
+        ComputerHardwareAdded(subHardware);
+    }
+
+    private void HardwareSensorAdded(ISensor data) {
+      Sensor sensor = new Sensor(data);
+      activeInstances.Add(sensor);
+
+      Instrumentation.Publish(sensor);
+    }
+
+    private void ComputerHardwareRemoved(IHardware hardware) {
+      hardware.SensorAdded -= HardwareSensorAdded;
+      hardware.SensorRemoved -= HardwareSensorRemoved;
+      
+      foreach (ISensor sensor in hardware.Sensors) 
+        HardwareSensorRemoved(sensor);
+      
+      foreach (IHardware subHardware in hardware.SubHardware)
+        ComputerHardwareRemoved(subHardware);
+
+      RevokeInstance(hardware.Identifier.ToString());
+    }
+
+    private void HardwareSensorRemoved(ISensor sensor) {
+      RevokeInstance(sensor.Identifier.ToString());
+    }
+
+    #endregion
+
+    #region Helpers
+    
+    private bool Exists(string identifier) {
+      return activeInstances.Exists(h => h.Identifier == identifier);
+    }
+
+    private void RevokeInstance(string identifier) {
+      int instanceIndex = activeInstances.FindIndex(
+        item => item.Identifier == identifier.ToString()
+      );
+
+      Instrumentation.Revoke(activeInstances[instanceIndex]);
+
+      activeInstances.RemoveAt(instanceIndex);
+    }
+
+    #endregion
+
+    public void Dispose() {
+      foreach (IWmiObject instance in activeInstances)
+        Instrumentation.Revoke(instance);
+      activeInstances = null;
+    }
+  }
+}