GtkSharp/glib/SignalCallback.cs
Gonzalo Paniagua Javier 97fec24e46 2003-02-06 Gonzalo Paniagua Javier <gonzalo@ximian.com>
* glib/SignalCallback.cs: new methods AddDelegate and RemoveDelegate.

	* generator/Signal.cs: add/remove signal handlers from the delegate used
	to invoke them.

	* generator/SignalHandler.cs: use Delegate instead of MulticastDelegate.

svn path=/trunk/gtk-sharp/; revision=11255
2003-02-06 00:58:02 +00:00

63 lines
1.3 KiB
C#

// GtkSharp.SignalCallback.cs - Signal callback base class implementation
//
// Authors: Mike Kestner <mkestner@speakeasy.net>
//
// (c) 2001 Mike Kestner
namespace GtkSharp {
using System;
using System.Collections;
using System.Runtime.InteropServices;
using GLib;
/// <summary>
/// SignalCallback Class
/// </summary>
///
/// <remarks>
/// Base Class for GSignal to C# event marshalling.
/// </remarks>
public abstract class SignalCallback {
// A counter used to produce unique keys for instances.
protected static int _NextKey = 0;
// Hashtable containing refs to all current instances.
protected static Hashtable _Instances = new Hashtable ();
// protected instance members
protected GLib.Object _obj;
protected Delegate _handler;
protected int _key;
protected Type _argstype;
/// <summary>
/// SignalCallback Constructor
/// </summary>
///
/// <remarks>
/// Initializes instance data.
/// </remarks>
public SignalCallback (GLib.Object obj, Delegate eh, Type argstype)
{
_key = _NextKey++;
_obj = obj;
_handler = eh;
_argstype = argstype;
_Instances [_key] = this;
}
public void AddDelegate (Delegate d)
{
_handler = Delegate.Combine (_handler, d);
}
public void RemoveDelegate (Delegate d)
{
_handler = Delegate.Remove (_handler, d);
}
}
}