Radegast/Core/RadegastInstance.cs

   1 // \r
   2 // Radegast Metaverse Client\r
   3 // Copyright (c) 2009, Radegast Development Team\r
   4 // All rights reserved.\r
   5 // \r
   6 // Redistribution and use in source and binary forms, with or without\r
   7 // modification, are permitted provided that the following conditions are met:\r
   8 // \r
   9 //     * Redistributions of source code must retain the above copyright notice,\r
  10 //       this list of conditions and the following disclaimer.\r
  11 //     * Redistributions in binary form must reproduce the above copyright\r
  12 //       notice, this list of conditions and the following disclaimer in the\r
  13 //       documentation and/or other materials provided with the distribution.\r
  14 //     * Neither the name of the application "Radegast", nor the names of its\r
  15 //       contributors may be used to endorse or promote products derived from\r
  16 //       this software without specific prior written permission.\r
  17 // \r
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
  19 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
  20 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
  21 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE\r
  22 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
  23 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r
  24 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER\r
  25 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,\r
  26 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\r
  27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
  28 //\r
  29 // $Id$\r
  30 //\r
  31 using System;\r
  32 using System.Collections.Generic;\r
  33 using System.IO;\r
  34 using System.Reflection;\r
  35 using System.Threading;\r
  36 using System.Windows.Forms;\r
  37 using Radegast.Commands;\r
  38 using Radegast.Netcom;\r
  39 using Radegast.Media;\r
  40 using OpenMetaverse;\r
  41 \r
  42 namespace Radegast\r
  43 {\r
  44     public class RadegastInstance\r
  45     {\r
  46         private GridClient client;\r
  47         private RadegastNetcom netcom;\r
  48 \r
  49         private StateManager state;\r
  50 \r
  51         private frmMain mainForm;\r
  52 \r
  53         // Singleton, there can be only one instance\r
  54         private static RadegastInstance globalInstance = null;\r
  55         public static RadegastInstance GlobalInstance\r
  56         {\r
  57             get\r
  58             {\r
  59                 if (globalInstance == null)\r
  60                 {\r
  61                     globalInstance = new RadegastInstance(new GridClient());\r
  62                 }\r
  63                 return globalInstance;\r
  64             }\r
  65         }\r
  66 \r
  67         private string userDir;\r
  68         /// <summary>\r
  69         /// System (not grid!) user's dir\r
  70         /// </summary>\r
  71         public string UserDir { get { return userDir; } }\r
  72 \r
  73         /// <summary>\r
  74         /// Grid client's user dir for settings and logs\r
  75         /// </summary>\r
  76         public string ClientDir\r
  77         {\r
  78             get\r
  79             {\r
  80                 if (client != null && client.Self != null && !string.IsNullOrEmpty(client.Self.Name))\r
  81                 {\r
  82                     return Path.Combine(userDir, client.Self.Name);\r
  83                 }\r
  84                 else\r
  85                 {\r
  86                     return Environment.CurrentDirectory;\r
  87                 }\r
  88             }\r
  89         }\r
  90 \r
  91         public string InventoryCacheFileName { get { return Path.Combine(ClientDir, "inventory.cache"); } }\r
  92 \r
  93         private string globalLogFile;\r
  94         public string GlobalLogFile { get { return globalLogFile; } }\r
  95 \r
  96         private bool monoRuntime;\r
  97         public bool MonoRuntime { get { return monoRuntime; } }\r
  98 \r
  99         private Dictionary<UUID, Group> groups = new Dictionary<UUID, Group>();\r
 100         public Dictionary<UUID, Group> Groups { get { return groups; } }\r
 101 \r
 102         private Settings globalSettings;\r
 103         /// <summary>\r
 104         /// Global settings for the entire application\r
 105         /// </summary>\r
 106         public Settings GlobalSettings { get { return globalSettings; } }\r
 107 \r
 108         private Settings clientSettings;\r
 109         /// <summary>\r
 110         /// Per client settings\r
 111         /// </summary>\r
 112         public Settings ClientSettings { get { return clientSettings; } }\r
 113 \r
 114         public Dictionary<UUID, string> nameCache = new Dictionary<UUID, string>();\r
 115 \r
 116         public const string INCOMPLETE_NAME = "Loading...";\r
 117 \r
 118         public readonly bool advancedDebugging = false;\r
 119 \r
 120         public readonly List<IRadegastPlugin> PluginsLoaded = new List<IRadegastPlugin>();\r
 121 \r
 122         private MediaManager mediaManager;\r
 123         /// <summary>\r
 124         /// Radegast media manager for playing streams and in world sounds\r
 125         /// </summary>\r
 126         public MediaManager MediaManager { get { return mediaManager; } }\r
 127 \r
 128 \r
 129         private CommandsManager commandsManager;\r
 130         /// <summary>\r
 131         /// Radegast command manager for executing textual console commands\r
 132         /// </summary>\r
 133         public CommandsManager CommandsManager { get { return commandsManager; } }\r
 134 \r
 135         /// <summary>\r
 136         /// Radegast ContextAction manager for context sensitive actions\r
 137         /// </summary>\r
 138         public ContextActionsManager ContextActionManager { get; private set; }\r
 139 \r
 140         private RadegastMovement movement;\r
 141         /// <summary>\r
 142         /// Allows key emulation for moving avatar around\r
 143         /// </summary>\r
 144         public RadegastMovement Movement { get { return movement; } }\r
 145 \r
 146         #region Events\r
 147         /// <summary>The event subscribers, null of no subscribers</summary>\r
 148         private EventHandler<ClientChangedEventArgs> m_ClientChanged;\r
 149 \r
 150         ///<summary>Raises the ClientChanged Event</summary>\r
 151         /// <param name="e">A ClientChangedEventArgs object containing\r
 152         /// the old and the new client</param>\r
 153         protected virtual void OnClientChanged(ClientChangedEventArgs e)\r
 154         {\r
 155             EventHandler<ClientChangedEventArgs> handler = m_ClientChanged;\r
 156             if (handler != null)\r
 157                 handler(this, e);\r
 158         }\r
 159 \r
 160         /// <summary>Thread sync lock object</summary>\r
 161         private readonly object m_ClientChangedLock = new object();\r
 162 \r
 163         /// <summary>Raised when the GridClient object in the main Radegast instance is changed</summary>\r
 164         public event EventHandler<ClientChangedEventArgs> ClientChanged\r
 165         {\r
 166             add { lock (m_ClientChangedLock) { m_ClientChanged += value; } }\r
 167             remove { lock (m_ClientChangedLock) { m_ClientChanged -= value; } }\r
 168         }\r
 169         #endregion Events\r
 170 \r
 171         public RadegastInstance(GridClient client0)\r
 172         {\r
 173             // incase something else calls GlobalInstance while we are loading\r
 174             globalInstance = this;\r
 175 \r
 176 #if HANDLE_THREAD_EXCEPTIONS\r
 177             Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);\r
 178             Application.ThreadException += HandleThreadException;\r
 179 #endif\r
 180 \r
 181             client = client0;\r
 182 \r
 183             // Are we running mono?\r
 184             monoRuntime = Type.GetType("Mono.Runtime") != null;\r
 185 \r
 186             netcom = new RadegastNetcom(this);\r
 187             state = new StateManager(this);\r
 188             mediaManager = new MediaManager(this);\r
 189             commandsManager = new CommandsManager(this);\r
 190             ContextActionManager = new ContextActionsManager(this);\r
 191             movement = new RadegastMovement(this);\r
 192 \r
 193             InitializeLoggingAndConfig();\r
 194             InitializeClient(client);\r
 195 \r
 196             mainForm = new frmMain(this);\r
 197             mainForm.InitializeControls();\r
 198 \r
 199             mainForm.Load += new EventHandler(mainForm_Load);\r
 200             ScanAndLoadPlugins();\r
 201         }\r
 202 \r
 203         private void InitializeClient(GridClient client)\r
 204         {\r
 205             client.Settings.MULTIPLE_SIMS = true;\r
 206 \r
 207             client.Settings.USE_INTERPOLATION_TIMER = false;\r
 208             client.Settings.ALWAYS_REQUEST_OBJECTS = true;\r
 209             client.Settings.ALWAYS_DECODE_OBJECTS = true;\r
 210             client.Settings.OBJECT_TRACKING = true;\r
 211             client.Settings.ENABLE_SIMSTATS = true;\r
 212             client.Settings.FETCH_MISSING_INVENTORY = true;\r
 213             client.Settings.SEND_AGENT_THROTTLE = true;\r
 214             client.Settings.SEND_AGENT_UPDATES = true;\r
 215 \r
 216             client.Settings.USE_ASSET_CACHE = true;\r
 217             client.Settings.ASSET_CACHE_DIR = Path.Combine(userDir, "cache");\r
 218             client.Assets.Cache.AutoPruneEnabled = false;\r
 219 \r
 220             client.Throttle.Total = 5000000f;\r
 221             client.Settings.THROTTLE_OUTGOING_PACKETS = true;\r
 222             client.Settings.LOGIN_TIMEOUT = 120 * 1000;\r
 223             client.Settings.SIMULATOR_TIMEOUT = 120 * 1000;\r
 224             client.Settings.MAX_CONCURRENT_TEXTURE_DOWNLOADS = 20;\r
 225 \r
 226             RegisterClientEvents(client);\r
 227         }\r
 228 \r
 229         private void RegisterClientEvents(GridClient client)\r
 230         {\r
 231             client.Groups.CurrentGroups += new EventHandler<CurrentGroupsEventArgs>(Groups_CurrentGroups);\r
 232             client.Groups.GroupLeaveReply += new EventHandler<GroupOperationEventArgs>(Groups_GroupsChanged);\r
 233             client.Groups.GroupDropped += new EventHandler<GroupDroppedEventArgs>(Groups_GroupsChanged);\r
 234             client.Groups.GroupJoinedReply += new EventHandler<GroupOperationEventArgs>(Groups_GroupsChanged);\r
 235             client.Avatars.UUIDNameReply += new EventHandler<UUIDNameReplyEventArgs>(Avatars_UUIDNameReply);\r
 236             netcom.ClientConnected += new EventHandler<EventArgs>(netcom_ClientConnected);\r
 237        }\r
 238 \r
 239         private void UnregisterClientEvents(GridClient client)\r
 240         {\r
 241             client.Groups.CurrentGroups -= new EventHandler<CurrentGroupsEventArgs>(Groups_CurrentGroups);\r
 242             client.Groups.GroupLeaveReply -= new EventHandler<GroupOperationEventArgs>(Groups_GroupsChanged);\r
 243             client.Groups.GroupDropped -= new EventHandler<GroupDroppedEventArgs>(Groups_GroupsChanged);\r
 244             client.Groups.GroupJoinedReply -= new EventHandler<GroupOperationEventArgs>(Groups_GroupsChanged);\r
 245             client.Avatars.UUIDNameReply -= new EventHandler<UUIDNameReplyEventArgs>(Avatars_UUIDNameReply);\r
 246             netcom.ClientConnected -= new EventHandler<EventArgs>(netcom_ClientConnected);\r
 247         }\r
 248 \r
 249         public void Reconnect()\r
 250         {\r
 251             TabConsole.DisplayNotificationInChat("Attempting to reconnect...", ChatBufferTextStyle.StatusDarkBlue);\r
 252             Logger.Log("Attemting to reconnect", Helpers.LogLevel.Info, client);\r
 253             GridClient oldClient = client;\r
 254             client = new GridClient();\r
 255             UnregisterClientEvents(oldClient);\r
 256             InitializeClient(client);\r
 257             OnClientChanged(new ClientChangedEventArgs(oldClient, client));\r
 258             netcom.Login();\r
 259         }\r
 260 \r
 261         public void CleanUp()\r
 262         {\r
 263             if (client != null)\r
 264             {\r
 265                 UnregisterClientEvents(client);\r
 266             }\r
 267 \r
 268             lock (PluginsLoaded)\r
 269             {\r
 270                 List<IRadegastPlugin> unload = new List<IRadegastPlugin>(PluginsLoaded);\r
 271                 unload.ForEach(plug =>\r
 272                {\r
 273                    PluginsLoaded.Remove(plug);\r
 274                    try\r
 275                    {\r
 276                        plug.StopPlugin(this);\r
 277                    }\r
 278                    catch (Exception ex)\r
 279                    {\r
 280                        Logger.Log("ERROR in Shutdown Plugin: " + plug + " because " + ex, Helpers.LogLevel.Debug, ex);\r
 281                    }\r
 282                });\r
 283             }\r
 284 \r
 285             if (movement != null)\r
 286             {\r
 287                 movement.Dispose();\r
 288                 movement = null;\r
 289             }\r
 290             if (commandsManager != null)\r
 291             {\r
 292                 commandsManager.Dispose();\r
 293                 commandsManager = null;\r
 294             }\r
 295             if (ContextActionManager != null)\r
 296             {\r
 297                 ContextActionManager.Dispose();\r
 298                 ContextActionManager = null;\r
 299             }\r
 300             if (mediaManager != null)\r
 301             {\r
 302                 mediaManager.Dispose();\r
 303                 mediaManager = null;\r
 304             }\r
 305             if (state != null)\r
 306             {\r
 307                 state.Dispose();\r
 308                 state = null;\r
 309             }\r
 310             if (netcom != null)\r
 311             {\r
 312                 netcom.Dispose();\r
 313                 netcom = null;\r
 314             }\r
 315             if (mainForm != null)\r
 316             {\r
 317                 mainForm.Load -= new EventHandler(mainForm_Load);\r
 318             }\r
 319             Logger.Log("RadegastInstance finished cleaning up.", Helpers.LogLevel.Debug);\r
 320         }\r
 321 \r
 322         void mainForm_Load(object sender, EventArgs e)\r
 323         {\r
 324             StartPlugins();\r
 325         }\r
 326 \r
 327         private void StartPlugins()\r
 328         {\r
 329             lock (PluginsLoaded)\r
 330             {\r
 331                 foreach (IRadegastPlugin plug in PluginsLoaded)\r
 332                 {\r
 333                     try\r
 334                     {\r
 335                         plug.StartPlugin(this);\r
 336                     }\r
 337                     catch (Exception ex)\r
 338                     {\r
 339                         Logger.Log("ERROR in Starting Radegast Plugin: " + plug + " because " + ex, Helpers.LogLevel.Debug);\r
 340                     }\r
 341                 }\r
 342             }\r
 343         }\r
 344 \r
 345         private void ScanAndLoadPlugins()\r
 346         {\r
 347             string dirName = Application.StartupPath;\r
 348 \r
 349             if (!Directory.Exists(dirName)) return;\r
 350 \r
 351             foreach (string loadfilename in Directory.GetFiles(dirName))\r
 352             {\r
 353                 if (loadfilename.ToLower().EndsWith(".dll") || loadfilename.ToLower().EndsWith(".exe"))\r
 354                 {\r
 355                     try\r
 356                     {\r
 357                         Assembly assembly = Assembly.LoadFile(loadfilename);\r
 358                         LoadAssembly(loadfilename, assembly);\r
 359                     }\r
 360                     catch (BadImageFormatException)\r
 361                     {\r
 362                         // non .NET .dlls\r
 363                     }\r
 364                     catch (ReflectionTypeLoadException)\r
 365                     {\r
 366                         // Out of date or dlls missing sub dependencies\r
 367                     }\r
 368                     catch (TypeLoadException)\r
 369                     {\r
 370                         // Another version of: Out of date or dlls missing sub dependencies\r
 371                     }\r
 372                     catch (Exception ex)\r
 373                     {\r
 374                         Logger.Log("ERROR in Radegast Plugin: " + loadfilename + " because " + ex, Helpers.LogLevel.Debug);\r
 375                     }\r
 376                 }\r
 377             }\r
 378         }\r
 379 \r
 380         public void LoadAssembly(string loadfilename, Assembly assembly)\r
 381         {\r
 382             foreach (Type type in assembly.GetTypes())\r
 383             {\r
 384                 if (typeof(IRadegastPlugin).IsAssignableFrom(type))\r
 385                 {\r
 386                     if  (type.IsInterface) continue;\r
 387                     try\r
 388                     {\r
 389                         IRadegastPlugin plug;\r
 390                         ConstructorInfo constructorInfo = type.GetConstructor(new Type[] {typeof (RadegastInstance)});\r
 391                         if (constructorInfo != null)\r
 392                             plug = (IRadegastPlugin) constructorInfo.Invoke(new[] {this});\r
 393                         else\r
 394                         {\r
 395                             constructorInfo = type.GetConstructor(new Type[] {});\r
 396                             if (constructorInfo != null)\r
 397                                 plug = (IRadegastPlugin) constructorInfo.Invoke(new object[0]);\r
 398                             else\r
 399                             {\r
 400                                 Logger.Log("ERROR Constructing Radegast Plugin: " + loadfilename + " because "+type+ " has no usable constructor.",Helpers.LogLevel.Debug);\r
 401                                 continue;\r
 402                             }\r
 403                         }\r
 404                         lock (PluginsLoaded) PluginsLoaded.Add(plug);\r
 405                     }\r
 406                     catch (Exception ex)\r
 407                     {\r
 408                         Logger.Log("ERROR Constructing Radegast Plugin: " + loadfilename + " because " + ex,\r
 409                                    Helpers.LogLevel.Debug);\r
 410                     }\r
 411                 }\r
 412                 else\r
 413                 {\r
 414                     try\r
 415                     {\r
 416                         commandsManager.LoadType(type);\r
 417                     }\r
 418                     catch (Exception ex)\r
 419                     {\r
 420                         Logger.Log("ERROR in Radegast Plugin: " + loadfilename + " Command: " + type +\r
 421                                    " because " + ex.Message + " " + ex.StackTrace, Helpers.LogLevel.Debug);\r
 422                     }\r
 423                 }\r
 424             }\r
 425         }\r
 426 \r
 427         void netcom_ClientConnected(object sender, EventArgs e)\r
 428         {\r
 429             try\r
 430             {\r
 431                 if (!Directory.Exists(ClientDir))\r
 432                     Directory.CreateDirectory(ClientDir);\r
 433             }\r
 434             catch (Exception ex)\r
 435             {\r
 436                 Logger.Log("Failed to create client directory", Helpers.LogLevel.Warning, ex);\r
 437             }\r
 438 \r
 439             clientSettings = new Settings(Path.Combine(ClientDir, "client_settings.xml"));\r
 440         }\r
 441 \r
 442 \r
 443         void Avatars_UUIDNameReply(object sender, UUIDNameReplyEventArgs e)\r
 444         {\r
 445             lock (nameCache)\r
 446             {\r
 447                 foreach (KeyValuePair<UUID, string> av in e.Names)\r
 448                 {\r
 449                     if (!nameCache.ContainsKey(av.Key))\r
 450                     {\r
 451                         nameCache.Add(av.Key, av.Value);\r
 452                     }\r
 453                 }\r
 454             }\r
 455         }\r
 456 \r
 457         public string getAvatarName(UUID key)\r
 458         {\r
 459             lock (nameCache)\r
 460             {\r
 461                 if (key == UUID.Zero)\r
 462                 {\r
 463                     return "(???) (???)";\r
 464                 }\r
 465                 if (nameCache.ContainsKey(key))\r
 466                 {\r
 467                     return nameCache[key];\r
 468                 }\r
 469                 else\r
 470                 {\r
 471                     client.Avatars.RequestAvatarName(key);\r
 472                     return INCOMPLETE_NAME;\r
 473                 }\r
 474             }\r
 475         }\r
 476 \r
 477         public void getAvatarNames(List<UUID> keys)\r
 478         {\r
 479             lock (nameCache)\r
 480             {\r
 481                 List<UUID> newNames = new List<UUID>();\r
 482                 foreach (UUID key in keys)\r
 483                 {\r
 484                     if (!nameCache.ContainsKey(key))\r
 485                     {\r
 486                         newNames.Add(key);\r
 487                     }\r
 488                 }\r
 489                 if (newNames.Count > 0)\r
 490                 {\r
 491                     client.Avatars.RequestAvatarNames(newNames);\r
 492                 }\r
 493             }\r
 494         }\r
 495 \r
 496         public bool haveAvatarName(UUID key)\r
 497         {\r
 498             lock (nameCache)\r
 499             {\r
 500                 if (nameCache.ContainsKey(key))\r
 501                     return true;\r
 502                 else\r
 503                     return false;\r
 504             }\r
 505         }\r
 506 \r
 507         void Groups_GroupsChanged(object sender, EventArgs e)\r
 508         {\r
 509             client.Groups.RequestCurrentGroups();\r
 510         }\r
 511 \r
 512         public static string SafeFileName(string fileName)\r
 513         {\r
 514             foreach (char lDisallowed in Path.GetInvalidFileNameChars())\r
 515             {\r
 516                 fileName = fileName.Replace(lDisallowed.ToString(), "_");\r
 517             }\r
 518 \r
 519             return fileName;\r
 520         }\r
 521 \r
 522         public void LogClientMessage(string fileName, string message)\r
 523         {\r
 524             lock (this)\r
 525             {\r
 526                 try\r
 527                 {\r
 528                     foreach (char lDisallowed in System.IO.Path.GetInvalidFileNameChars())\r
 529                     {\r
 530                         fileName = fileName.Replace(lDisallowed.ToString(), "_");\r
 531                     }\r
 532 \r
 533                     File.AppendAllText(Path.Combine(ClientDir, fileName),\r
 534                         DateTime.Now.ToString("yyyy-MM-dd [HH:mm:ss] ") + message + Environment.NewLine);\r
 535                 }\r
 536                 catch (Exception) { }\r
 537             }\r
 538         }\r
 539 \r
 540         void Groups_CurrentGroups(object sender, CurrentGroupsEventArgs e)\r
 541         {\r
 542             this.groups = e.Groups;\r
 543         }\r
 544 \r
 545         private void InitializeLoggingAndConfig()\r
 546         {\r
 547             try\r
 548             {\r
 549                 userDir = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData), Properties.Resources.ProgramName);\r
 550                 if (!Directory.Exists(userDir))\r
 551                 {\r
 552                     Directory.CreateDirectory(userDir);\r
 553                 }\r
 554             }\r
 555             catch (Exception)\r
 556             {\r
 557                 userDir = System.Environment.CurrentDirectory;\r
 558             };\r
 559 \r
 560             globalLogFile = Path.Combine(userDir, Properties.Resources.ProgramName + ".log");\r
 561             globalSettings = new Settings(Path.Combine(userDir, "settings.xml"));\r
 562         }\r
 563 \r
 564         public GridClient Client\r
 565         {\r
 566             get { return client; }\r
 567         }\r
 568 \r
 569         public RadegastNetcom Netcom\r
 570         {\r
 571             get { return netcom; }\r
 572         }\r
 573 \r
 574         public StateManager State\r
 575         {\r
 576             get { return state; }\r
 577         }\r
 578 \r
 579         public frmMain MainForm\r
 580         {\r
 581             get { return mainForm; }\r
 582         }\r
 583 \r
 584         public TabsConsole TabConsole\r
 585         {\r
 586             get { return mainForm.TabConsole; }\r
 587         }\r
 588 \r
 589         public void HandleThreadException(object sender, ThreadExceptionEventArgs e)\r
 590         {\r
 591             Logger.Log("Unhandled Thread Exception: " \r
 592                 + e.Exception.Message + Environment.NewLine\r
 593                 + e.Exception.StackTrace + Environment.NewLine,\r
 594                 Helpers.LogLevel.Error,\r
 595                 client);\r
 596 \r
 597             Application.Exit();\r
 598         }\r
 599     }\r
 600 \r
 601     #region Event classes\r
 602     public class ClientChangedEventArgs : EventArgs\r
 603     {\r
 604         private GridClient m_OldClient;\r
 605         private GridClient m_Client;\r
 606 \r
 607         public GridClient OldClient { get { return m_OldClient; } }\r
 608         public GridClient Client { get { return m_Client; } }\r
 609 \r
 610         public ClientChangedEventArgs(GridClient OldClient, GridClient Client)\r
 611         {\r
 612             m_OldClient = OldClient;\r
 613             m_Client = Client;\r
 614         }\r
 615     }\r
 616     #endregion Event classes\r
 617 }\r