01acd7f576
* generator/Signal.cs : rmv Handle param to SignalCallback ctor calls. s/GtkSharp.Signal*/GLib.Signal*. * generator/SignalHandler.cs : rmv Handle param to ctors as it's redundant. s/GtkSharp.Signal*/GLib.Signal*. Use new Connect/Disconnect instead of generating DllImports into libgobject directly. * glib/SignalArgs.cs : move the the GLib namespace. * glib/SignalCallback.cs : expose Connect and Disconnect methods to hide some pinvokes that were previously generated. Also move to the GLib namespace. gnome/*Handler.cs : update to new SignalHandler API. gnome/CanvasProxy.cs : ditto gnome/void*Signal.cs : ditto svn path=/trunk/gtk-sharp/; revision=26778
88 lines
2.1 KiB
C#
88 lines
2.1 KiB
C#
// GLib.SignalCallback.cs - Signal callback base class implementation
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//
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// Authors: Mike Kestner <mkestner@ximian.com>
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//
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// Copyright (c) 2001 Mike Kestner
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// Copyright (c) 2004 Novell, Inc.
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namespace GLib {
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using System;
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using System.Collections;
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using System.Runtime.InteropServices;
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public abstract class SignalCallback : IDisposable {
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// A counter used to produce unique keys for instances.
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protected static int _NextKey = 0;
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// Hashtable containing refs to all current instances.
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protected static Hashtable _Instances = new Hashtable ();
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// protected instance members
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protected GLib.Object _obj;
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protected Delegate _handler;
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protected int _key;
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protected System.Type _argstype;
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protected uint _HandlerID;
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protected SignalCallback (GLib.Object obj, Delegate eh, System.Type argstype)
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{
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_key = _NextKey++;
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_obj = obj;
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_handler = eh;
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_argstype = argstype;
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_Instances [_key] = this;
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}
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public void AddDelegate (Delegate d)
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{
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_handler = Delegate.Combine (_handler, d);
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}
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public void RemoveDelegate (Delegate d)
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{
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_handler = Delegate.Remove (_handler, d);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern uint g_signal_connect_data(IntPtr obj, string name, Delegate cb, int key, IntPtr p, int flags);
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protected void Connect (string name, Delegate cb, int flags)
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{
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_HandlerID = g_signal_connect_data(_obj.Handle, name, cb, _key, new IntPtr(0), flags);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_signal_handler_disconnect (IntPtr instance, uint handler);
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[DllImport("libgobject-2.0-0.dll")]
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static extern bool g_signal_handler_is_connected (IntPtr instance, uint handler);
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protected void Disconnect ()
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{
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if (g_signal_handler_is_connected (_obj.Handle, _HandlerID))
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g_signal_handler_disconnect (_obj.Handle, _HandlerID);
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}
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (disposing) {
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_obj = null;
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_handler = null;
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_argstype = null;
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}
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}
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~SignalCallback ()
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{
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Dispose (false);
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}
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}
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}
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