mcs/class/System/System.ComponentModel/MarshalByValueComponent.cs

   1 //
   2 // System.ComponentModel.MarshalByValueComponent.cs
   3 //
   4 // Author:
   5 //   Rodrigo Moya (rodrigo@ximian.com)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Ximian, Inc
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.ComponentModel;
  35 using System.ComponentModel.Design;
  36
  37 namespace System.ComponentModel
  38 {
  39         /// <summary>
  40         /// Implements IComponent and provides the base implementation for remotable components that are marshaled by value (a copy of the serialized object is passed).
  41         /// </summary>
  42         [DesignerCategory ("Component"), TypeConverter (typeof (ComponentConverter))]
  43         [Designer ("System.Windows.Forms.Design.ComponentDocumentDesigner, " + Consts.AssemblySystem_Design, typeof (IRootDesigner))]
  44         public class MarshalByValueComponent : IComponent, IDisposable, IServiceProvider
  45         {
  46                 private EventHandlerList eventList;
  47                 private ISite mySite;
  48                 private object disposedEvent = new object ();
  49
  50                 public MarshalByValueComponent ()
  51                 {
  52                 }
  53
  54                 public void Dispose ()
  55                 {
  56                         Dispose (true);
  57                         GC.SuppressFinalize (this);
  58                 }
  59
  60                 [MonoTODO]
  61                 protected virtual void Dispose (bool disposing)
  62                 {
  63                         if (disposing) {
  64                                 // free managed objects contained here
  65                         }
  66
  67                         // Free unmanaged objects
  68                         // Set fields to null
  69                 }
  70
  71                 ~MarshalByValueComponent ()
  72                 {
  73                         Dispose (false);
  74                 }
  75
  76                 public virtual object GetService (Type service)
  77                 {
  78                         if (mySite != null) {
  79                                 return mySite.GetService(service);
  80                         }
  81                         return null;
  82                 }
  83
  84                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  85                 public virtual IContainer Container {
  86                         get {
  87                                 if (mySite == null)
  88                                         return null;
  89                                 return mySite.Container;
  90                         }
  91                 }
  92
  93                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  94                 public virtual bool DesignMode {
  95                         get {
  96                                 if (mySite == null)
  97                                         return false;
  98                                 return mySite.DesignMode;
  99                         }
 100                 }
 101
 102                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 103                 public virtual ISite Site {
 104                         get { return mySite; }
 105                         set { mySite = value; }
 106                 }
 107
 108                 public override string ToString ()
 109                 {
 110                         if (mySite == null)
 111                                 return GetType ().ToString ();
 112                         return String.Format ("{0} [{1}]", mySite.Name, GetType ().ToString ());
 113                 }
 114
 115                 protected EventHandlerList Events {
 116                         get {
 117                                 if (eventList == null)
 118                                         eventList = new EventHandlerList ();
 119
 120                                 return eventList;
 121                         }
 122                 }
 123
 124                 public event EventHandler Disposed
 125                 {
 126                         add { Events.AddHandler (disposedEvent, value); }
 127                         remove { Events.RemoveHandler (disposedEvent, value); }
 128                 }
 129         }
 130 }
 131