BeagleClient/DBusisms.cs

   1 //
   2 // SearchWindow.cs
   3 //
   4 // Copyright (C) 2004 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a copy
   9 // of this software and associated documentation files (the "Software"), to deal
  10 // in the Software without restriction, including without limitation the rights
  11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 // copies of the Software, and to permit persons to whom the Software is
  13 // furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in all
  16 // copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24 // SOFTWARE.
  25 //
  26
  27 using System;
  28 using System.Runtime.InteropServices;
  29 using DBus;
  30
  31 namespace Beagle
  32 {
  33         public class DBusisms {
  34
  35                 static public readonly string ServiceName = "com.novell.Beagle";
  36                 static public readonly string FactoryPath = "/com/novell/Beagle/Factory";
  37                 static public readonly string RemoteControlPath = "/com/novell/Beagle/RemoteControl";
  38                 static public readonly string WebHistoryIndexerPath = "/com/novell/Beagle/WebHistoryIndexer";
  39                 static public readonly string FileSystemIndexerPath = "/com/novell/Beagle/FileSystemIndexer";
  40
  41                 public delegate void Callback ();
  42                 static public event Callback BeagleUpAgain;
  43                 static public event Callback BeagleDown;
  44
  45
  46                 static Connection connection = null;
  47                 static Service service = null;
  48                 static BusDriver driver = null;
  49
  50                 [DllImport ("dbus-glib-1")]
  51                 private extern static void dbus_g_thread_init ();
  52
  53                 internal static Connection Connection {
  54                         get {
  55                                 if (connection == null) {
  56                                         dbus_g_thread_init ();
  57                                         connection = Bus.GetSessionBus ();
  58                                 }
  59                                 return connection;
  60                         }
  61                 }
  62
  63                 internal static Service Service {
  64                         get {
  65                                 if (service == null) {
  66                                         Driver.ServiceOwnerChanged += OnServiceOwnerChanged;
  67                                         service = DBus.Service.Get (Connection, ServiceName);
  68                                 }
  69                                 return service;
  70                         }
  71                 }
  72
  73                 internal static BusDriver Driver {
  74                         get {
  75                                 if (driver == null) {
  76                                         driver = BusDriver.New (Connection);
  77                                 }
  78                                 return driver;
  79                         }
  80                 }
  81
  82                 internal static void OnServiceOwnerChanged (string serviceName,
  83                                                             string oldOwner,
  84                                                             string newOwner)
  85                 {
  86                         if (serviceName == ServiceName) {
  87
  88                                 if (oldOwner == "") { // New service added
  89                                         //System.Console.WriteLine ("BeagleDaemon up");
  90
  91                                         if (BeagleUpAgain != null)
  92                                                 BeagleUpAgain ();
  93
  94                                 } else if (newOwner == "") { // Existing service deleted
  95                                         //System.Console.WriteLine ("BeagleDaemon down");
  96
  97                                         service = null;
  98
  99                                         if (BeagleDown != null)
 100                                                 BeagleDown ();
 101                                 }
 102                         }
 103                 }
 104         }
 105 }