paulwerelds@224: /*
paulwerelds@224:   
paulwerelds@224:   Version: MPL 1.1/GPL 2.0/LGPL 2.1
paulwerelds@224: 
paulwerelds@224:   The contents of this file are subject to the Mozilla Public License Version
paulwerelds@224:   1.1 (the "License"); you may not use this file except in compliance with
paulwerelds@224:   the License. You may obtain a copy of the License at
paulwerelds@224:  
paulwerelds@224:   http://www.mozilla.org/MPL/
paulwerelds@224: 
paulwerelds@224:   Software distributed under the License is distributed on an "AS IS" basis,
paulwerelds@224:   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
paulwerelds@224:   for the specific language governing rights and limitations under the License.
paulwerelds@224: 
paulwerelds@224:   The Original Code is the Open Hardware Monitor code.
paulwerelds@224: 
paulwerelds@224:   The Initial Developer of the Original Code is 
paulwerelds@224:   Paul Werelds <paul@werelds.net>.
paulwerelds@224:   Portions created by the Initial Developer are Copyright (C) 2009-2010
paulwerelds@224:   the Initial Developer. All Rights Reserved.
paulwerelds@224: 
paulwerelds@224:   Contributor(s):
paulwerelds@224: 
paulwerelds@224:   Alternatively, the contents of this file may be used under the terms of
paulwerelds@224:   either the GNU General Public License Version 2 or later (the "GPL"), or
paulwerelds@224:   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
paulwerelds@224:   in which case the provisions of the GPL or the LGPL are applicable instead
paulwerelds@224:   of those above. If you wish to allow use of your version of this file only
paulwerelds@224:   under the terms of either the GPL or the LGPL, and not to allow others to
paulwerelds@224:   use your version of this file under the terms of the MPL, indicate your
paulwerelds@224:   decision by deleting the provisions above and replace them with the notice
paulwerelds@224:   and other provisions required by the GPL or the LGPL. If you do not delete
paulwerelds@224:   the provisions above, a recipient may use your version of this file under
paulwerelds@224:   the terms of any one of the MPL, the GPL or the LGPL.
paulwerelds@224:  
paulwerelds@224: */
paulwerelds@224: 
paulwerelds@223: using System;
paulwerelds@223: using System.Collections.Generic;
paulwerelds@223: using System.Management.Instrumentation;
paulwerelds@223: using OpenHardwareMonitor.Hardware;
paulwerelds@225: using OpenHardwareMonitor.Wmi;
paulwerelds@223: 
paulwerelds@223: [assembly: Instrumented("root/OpenHardwareMonitor")]
paulwerelds@223: 
paulwerelds@223: [System.ComponentModel.RunInstaller(true)]
paulwerelds@223: public class InstanceInstaller : DefaultManagementProjectInstaller { }
paulwerelds@223: 
paulwerelds@225: namespace OpenHardwareMonitor.Wmi {
paulwerelds@224:   /// <summary>
paulwerelds@224:   /// The WMI Provider.
paulwerelds@224:   /// This class is not exposed to WMI itself.
paulwerelds@224:   /// </summary>
paulwerelds@223:   public class WmiProvider : IDisposable {
paulwerelds@225:     private List<IWmiObject> activeInstances;
paulwerelds@223: 
paulwerelds@223:     public WmiProvider(IComputer computer) {
paulwerelds@225:       activeInstances = new List<IWmiObject>();
paulwerelds@223: 
paulwerelds@223:       foreach (IHardware hardware in computer.Hardware)
paulwerelds@223:         ComputerHardwareAdded(hardware);
paulwerelds@223: 
paulwerelds@223:       computer.HardwareAdded += ComputerHardwareAdded;
paulwerelds@223:       computer.HardwareRemoved += ComputerHardwareRemoved;
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     public void Update() {
paulwerelds@225:       foreach (IWmiObject instance in activeInstances)
paulwerelds@223:         instance.Update();
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     #region Eventhandlers
paulwerelds@223:     
paulwerelds@223:     private void ComputerHardwareAdded(IHardware hardware) {
paulwerelds@223:       if (!Exists(hardware.Identifier.ToString())) {
paulwerelds@223:         foreach (ISensor sensor in hardware.Sensors)
paulwerelds@223:           HardwareSensorAdded(sensor);
paulwerelds@223: 
paulwerelds@223:         hardware.SensorAdded += HardwareSensorAdded;
paulwerelds@223:         hardware.SensorRemoved += HardwareSensorRemoved;
paulwerelds@223: 
paulwerelds@223:         Hardware hw = new Hardware(hardware);
paulwerelds@225:         activeInstances.Add(hw);
paulwerelds@223: 
paulwerelds@223:         Instrumentation.Publish(hw);
paulwerelds@223:       }
paulwerelds@223: 
paulwerelds@223:       foreach (IHardware subHardware in hardware.SubHardware)
paulwerelds@223:         ComputerHardwareAdded(subHardware);
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     private void HardwareSensorAdded(ISensor data) {
paulwerelds@223:       Sensor sensor = new Sensor(data);
paulwerelds@225:       activeInstances.Add(sensor);
paulwerelds@223: 
paulwerelds@223:       Instrumentation.Publish(sensor);
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     private void ComputerHardwareRemoved(IHardware hardware) {
paulwerelds@223:       hardware.SensorAdded -= HardwareSensorAdded;
paulwerelds@223:       hardware.SensorRemoved -= HardwareSensorRemoved;
paulwerelds@223:       
paulwerelds@223:       foreach (ISensor sensor in hardware.Sensors) 
paulwerelds@223:         HardwareSensorRemoved(sensor);
paulwerelds@223:       
paulwerelds@223:       foreach (IHardware subHardware in hardware.SubHardware)
paulwerelds@223:         ComputerHardwareRemoved(subHardware);
paulwerelds@223: 
paulwerelds@223:       RevokeInstance(hardware.Identifier.ToString());
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     private void HardwareSensorRemoved(ISensor sensor) {
paulwerelds@223:       RevokeInstance(sensor.Identifier.ToString());
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     #endregion
paulwerelds@223: 
paulwerelds@223:     #region Helpers
paulwerelds@223:     
paulwerelds@223:     private bool Exists(string identifier) {
paulwerelds@225:       return activeInstances.Exists(h => h.Identifier == identifier);
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     private void RevokeInstance(string identifier) {
paulwerelds@225:       int instanceIndex = activeInstances.FindIndex(
paulwerelds@223:         item => item.Identifier == identifier.ToString()
paulwerelds@223:       );
paulwerelds@223: 
paulwerelds@225:       Instrumentation.Revoke(activeInstances[instanceIndex]);
paulwerelds@223: 
paulwerelds@225:       activeInstances.RemoveAt(instanceIndex);
paulwerelds@223:     }
paulwerelds@223: 
paulwerelds@223:     #endregion
paulwerelds@223: 
paulwerelds@223:     public void Dispose() {
paulwerelds@225:       foreach (IWmiObject instance in activeInstances)
paulwerelds@223:         Instrumentation.Revoke(instance);
paulwerelds@225:       activeInstances = null;
paulwerelds@223:     }
paulwerelds@223:   }
paulwerelds@223: }