MarshalByValueComponent.cs :  » 2.6.4-mono-.net-core » System.ComponentModel » System » ComponentModel » C# / CSharp Open Source

//
// System.ComponentModel.MarshalByValueComponent.cs
//
// Author:
//   Rodrigo Moya (rodrigo@ximian.com)
//   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) Ximian, Inc
// (C) 2003 Andreas Nahr
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Runtime.InteropServices;

namespace System.ComponentModel{
  /// <summary>
  /// Implements IComponent and provides the base implementation for remotable components that are marshaled by value (a copy of the serialized object is passed).
  /// </summary>
  [DesignerCategory ("Component"), TypeConverter (typeof (ComponentConverter))]
      [Designer ("System.Windows.Forms.Design.ComponentDocumentDesigner, " + Consts.AssemblySystem_Design, typeof (IRootDesigner))]
#if NET_2_0
  [ComVisible (true)]
#endif
  public class MarshalByValueComponent : IComponent, IDisposable, IServiceProvider
  {
    private EventHandlerList eventList;
    private ISite mySite;
    private object disposedEvent = new object ();

    public MarshalByValueComponent ()
    {
    }

    public void Dispose ()
    {
      Dispose (true);
      GC.SuppressFinalize (this);
    }

    [MonoTODO]
    protected virtual void Dispose (bool disposing)
    {
      if (disposing) {
        // free managed objects contained here
      }

      // Free unmanaged objects
      // Set fields to null
    }

#if !TARGET_JVM
    ~MarshalByValueComponent ()
    {
      Dispose (false);
    }
#endif  

    public virtual object GetService (Type service) 
    {
      if (mySite != null) {
        return mySite.GetService(service); 
      }
      return null; 
    }
    
    [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    public virtual IContainer Container {
      get {
        if (mySite == null)
          return null;
        return mySite.Container;
      }
    }

    [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    public virtual bool DesignMode {
      get {
        if (mySite == null)
          return false;
        return mySite.DesignMode;
      }
    }

    [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    public virtual ISite Site {
      get { return mySite; }
      set { mySite = value; }
    }

    public override string ToString ()
    {
      if (mySite == null)
        return GetType ().ToString ();
      return String.Format ("{0} [{1}]", mySite.Name, GetType ().ToString ());
    }

    protected EventHandlerList Events {
      get {
        if (eventList == null)
          eventList = new EventHandlerList ();

        return eventList;
      }
    }
    
    public event EventHandler Disposed
    {
      add { Events.AddHandler (disposedEvent, value); }
      remove { Events.RemoveHandler (disposedEvent, value); }
    }
  }
}