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![Mike Kestner](/assets/img/avatar_default.png)
* generator/OpaqueGen.cs : override the new Copy vm if a Copy method exists for the type. * glib/Opaque.cs : add a virtual method to allow subclasses with Copy methods to override. Use the method in GetOpaque for unowned instantiations to try to obtain an owned instance. [Fixes #82037] svn path=/trunk/gtk-sharp/; revision=82293
139 lines
2.9 KiB
C#
139 lines
2.9 KiB
C#
// Opaque .cs - Opaque struct wrapper implementation
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//
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// Authors: Bob Smith <bob@thestuff.net>
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// Mike Kestner <mkestner@speakeasy.net>
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// Rachel Hestilow <hestilow@ximian.com>
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//
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// Copyright (c) 2001 Bob Smith
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// Copyright (c) 2001 Mike Kestner
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// Copyright (c) 2002 Rachel Hestilow
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// Copyright (c) 2004 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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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.ComponentModel;
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using System.Runtime.InteropServices;
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public class Opaque : IWrapper, IDisposable {
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IntPtr _obj;
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bool owned;
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[Obsolete ("Use more explicit overload. This method always returns null")]
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public static Opaque GetOpaque (IntPtr o)
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{
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return null;
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}
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public static Opaque GetOpaque (IntPtr o, Type type, bool owned)
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{
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Opaque opaque = (Opaque)Activator.CreateInstance (type, new object[] { o });
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if (owned) {
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if (opaque.owned) {
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// The constructor took a Ref it shouldn't have, so undo it
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opaque.Unref (o);
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}
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opaque.owned = true;
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} else
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opaque = opaque.Copy (o);
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return opaque;
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}
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public Opaque ()
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{
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owned = true;
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}
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public Opaque (IntPtr raw)
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{
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owned = false;
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Raw = raw;
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}
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protected IntPtr Raw {
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get {
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return _obj;
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}
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set {
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if (_obj != IntPtr.Zero) {
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Unref (_obj);
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if (owned)
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Free (_obj);
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}
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_obj = value;
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if (_obj != IntPtr.Zero) {
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Ref (_obj);
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}
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}
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}
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~Opaque ()
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{
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Dispose ();
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}
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public virtual void Dispose ()
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{
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Raw = IntPtr.Zero;
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GC.SuppressFinalize (this);
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}
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// These take an IntPtr arg so we don't get conflicts if we need
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// to have an "[Obsolete] public void Ref ()"
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protected virtual void Ref (IntPtr raw) {}
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protected virtual void Unref (IntPtr raw) {}
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protected virtual void Free (IntPtr raw) {}
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protected virtual Opaque Copy (IntPtr raw)
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{
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return this;
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}
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public IntPtr Handle {
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get {
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return _obj;
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}
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}
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public bool Owned {
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get {
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return owned;
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}
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set {
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owned = value;
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}
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}
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public override bool Equals (object o)
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{
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if (!(o is Opaque))
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return false;
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return (Handle == ((Opaque) o).Handle);
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}
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public override int GetHashCode ()
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{
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return Handle.GetHashCode ();
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}
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}
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}
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