852 lines
26 KiB
C#
852 lines
26 KiB
C#
// Object.cs - GObject class wrapper implementation
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//
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// Authors: Mike Kestner <mkestner@speakeasy.net>
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// Andres G. Aragoneses <knocte@gmail.com>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2004-2005 Novell, Inc.
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// Copyright (c) 2013 Andres G. Aragoneses
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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.Generic;
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using System.Reflection;
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using System.Runtime.InteropServices;
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public class Object : IWrapper, IDisposable {
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IntPtr handle;
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ToggleRef tref;
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bool disposed = false;
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static uint idx = 1;
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static Dictionary<IntPtr, ToggleRef> Objects = new Dictionary<IntPtr, ToggleRef>();
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static Dictionary<IntPtr, Dictionary<IntPtr, GLib.Value>> PropertiesToSet = new Dictionary<IntPtr, Dictionary<IntPtr, GLib.Value>>();
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~Object ()
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{
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if (WarnOnFinalize)
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Console.Error.WriteLine ("Unexpected finalization of " + GetType() + " instance. Consider calling Dispose.");
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Dispose (false);
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}
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public void Dispose ()
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{
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if (disposed)
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return;
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Dispose (true);
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disposed = 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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ToggleRef tref;
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lock (Objects) {
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if (Objects.TryGetValue (Handle, out tref)) {
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Objects.Remove (Handle);
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}
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}
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handle = IntPtr.Zero;
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if (tref == null)
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return;
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if (disposing)
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tref.Dispose ();
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else
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tref.QueueUnref ();
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}
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public static bool WarnOnFinalize { get; set; }
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_object_ref (IntPtr raw);
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern void g_object_unref (IntPtr raw);
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public static Object TryGetObject (IntPtr o)
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{
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if (o == IntPtr.Zero)
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return null;
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ToggleRef toggle_ref;
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lock (Objects) {
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if (!Objects.TryGetValue (o, out toggle_ref)) {
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return null;
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}
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}
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if (toggle_ref != null) {
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return toggle_ref.Target;
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}
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return null;
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}
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public static Object GetObject(IntPtr o, bool owned_ref)
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{
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if (o == IntPtr.Zero)
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return null;
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Object obj = null;
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ToggleRef toggle_ref;
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lock (Objects) {
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if (Objects.TryGetValue (o, out toggle_ref)) {
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if (toggle_ref != null)
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obj = toggle_ref.Target;
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}
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}
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if (obj != null && obj.Handle == o) {
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if (owned_ref)
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g_object_unref (obj.Handle);
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return obj;
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}
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if (!owned_ref)
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g_object_ref (o);
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obj = GLib.ObjectManager.CreateObject(o);
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if (obj == null) {
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g_object_unref (o);
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return null;
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}
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return obj;
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}
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public static Object GetObject(IntPtr o)
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{
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return GetObject (o, false);
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}
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// Key: The Type for the set of properties
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// Value->SubKey: The pointer to the ParamSpec of the property
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// Value->SubValue: The corresponding PropertyInfo object
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static Dictionary<Type, Dictionary<IntPtr, PropertyInfo>> properties;
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static Dictionary<Type, Dictionary<IntPtr, PropertyInfo>> Properties {
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get {
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if (properties == null)
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properties = new Dictionary<Type, Dictionary<IntPtr, PropertyInfo>> ();
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return properties;
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}
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}
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static Dictionary<IntPtr, Dictionary<Type, PropertyInfo>> interface_properties;
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static Dictionary<IntPtr, Dictionary<Type, PropertyInfo>> IProperties {
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get {
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if (interface_properties == null)
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interface_properties = new Dictionary<IntPtr, Dictionary<Type, PropertyInfo>> ();
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return interface_properties;
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}
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}
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struct GTypeClass {
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public IntPtr gtype;
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}
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struct GObjectClass {
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public GTypeClass type_class;
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public IntPtr construct_props;
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public ConstructorDelegate constructor_cb;
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public SetPropertyDelegate set_prop_cb;
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public GetPropertyDelegate get_prop_cb;
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public IntPtr dispose;
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public IntPtr finalize;
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public IntPtr dispatch_properties_changed;
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public IntPtr notify;
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public IntPtr constructed;
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public IntPtr dummy1;
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public IntPtr dummy2;
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public IntPtr dummy3;
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public IntPtr dummy4;
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public IntPtr dummy5;
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public IntPtr dummy6;
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public IntPtr dummy7;
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}
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internal class ClassInitializer {
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internal Type Type { get; private set; }
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internal bool HandlersOverriden { get; private set; }
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internal GType.ClassInitDelegate ClassInitManagedDelegate { get; private set; }
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uint idx = 1;
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bool is_first_subclass;
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private GType gtype;
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private List<GInterfaceAdapter> adapters = new List<GInterfaceAdapter> ();
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internal ClassInitializer (Type type)
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{
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ClassInitManagedDelegate = this.ClassInit;
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Type = type;
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gtype = GType.RegisterGObjectType (this);
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is_first_subclass = gtype.GetBaseType () == gtype.GetThresholdType ();
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}
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internal GType Init ()
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{
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AddGInterfaces ();
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gtype.EnsureClass (); //calls class_init
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ConnectDefaultHandlers ();
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InvokeTypeInitializers ();
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AddInterfaceProperties ();
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return gtype;
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}
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private void AddGInterfaces ()
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{
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foreach (Type iface in Type.GetInterfaces ()) {
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if (!iface.IsDefined (typeof (GInterfaceAttribute), true))
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continue;
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GInterfaceAttribute attr = iface.GetCustomAttributes (typeof (GInterfaceAttribute), false) [0] as GInterfaceAttribute;
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GInterfaceAdapter adapter = Activator.CreateInstance (attr.AdapterType, null) as GInterfaceAdapter;
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if (!iface.IsAssignableFrom (Type.BaseType)) {
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GInterfaceInfo info = adapter.Info;
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info.Data = gtype.Val;
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g_type_add_interface_static (gtype.Val, adapter.GInterfaceGType.Val, ref info);
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adapters.Add (adapter);
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}
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}
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}
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private void ClassInit (IntPtr gobject_class_handle)
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{
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bool override_ctor = is_first_subclass;
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bool override_props = is_first_subclass || adapters.Count > 0;
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OverrideHandlers (gobject_class_handle, override_ctor, override_props);
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foreach (GInterfaceAdapter adapter in adapters) {
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InitializeProperties (adapter, gobject_class_handle);
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}
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AddProperties (gobject_class_handle);
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}
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private void InitializeProperties (GInterfaceAdapter adapter, IntPtr gobject_class_handle)
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{
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foreach (PropertyInfo pinfo in adapter.GetType ().GetProperties (BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)) {
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foreach (object attr in pinfo.GetCustomAttributes (typeof (PropertyAttribute), false)) {
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if (pinfo.GetIndexParameters ().Length > 0)
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throw new InvalidOperationException (String.Format ("Property {0} of type {1} cannot be overriden because its GLib.PropertyAttribute is expected to have one or more indexed parameters",
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pinfo.Name, adapter.GetType ().FullName));
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PropertyAttribute property_attr = attr as PropertyAttribute;
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if (property_attr != null) {
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OverrideProperty (gobject_class_handle, property_attr.Name);
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}
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}
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}
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}
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void OverrideProperty (IntPtr declaring_class, string name)
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{
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Object.OverrideProperty (declaring_class, idx++, name);
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idx++;
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}
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private void OverrideHandlers (bool ctor, bool properties)
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{
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OverrideHandlers (gtype.GetClassPtr (), ctor, properties);
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}
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private void OverrideHandlers (IntPtr gobject_class_handle, bool ctor, bool properties)
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{
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if (HandlersOverriden || (ctor == false && properties == false))
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return;
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GObjectClass gobject_class = (GObjectClass)Marshal.PtrToStructure (gobject_class_handle, typeof(GObjectClass));
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if (ctor) {
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gobject_class.constructor_cb = GLib.Object.ConstructorHandler;
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}
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if (properties) {
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gobject_class.get_prop_cb = GLib.Object.GetPropertyHandler;
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gobject_class.set_prop_cb = GLib.Object.SetPropertyHandler;
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}
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Marshal.StructureToPtr (gobject_class, gobject_class_handle, false);
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HandlersOverriden = true;
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}
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void AddProperties (IntPtr gobject_class_handle)
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{
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if (is_first_subclass) {
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ParamSpec pspec = new ParamSpec ("gtk-sharp-managed-instance", "", "", GType.Pointer, ParamFlags.Writable | ParamFlags.ConstructOnly);
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g_object_class_install_property (gobject_class_handle, idx, pspec.Handle);
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idx++;
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}
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foreach (PropertyInfo pinfo in Type.GetProperties (BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)) {
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foreach (object attr in pinfo.GetCustomAttributes (typeof (PropertyAttribute), false)) {
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if (pinfo.GetIndexParameters ().Length > 0)
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throw new InvalidOperationException(String.Format("GLib.RegisterPropertyAttribute cannot be applied to property {0} of type {1} because the property expects one or more indexed parameters",
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pinfo.Name, Type.FullName));
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OverrideHandlers (false, true);
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PropertyAttribute property_attr = attr as PropertyAttribute;
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try {
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IntPtr param_spec = RegisterProperty (gtype, property_attr.Name, property_attr.Nickname, property_attr.Blurb, idx, (GType) pinfo.PropertyType, pinfo.CanRead, pinfo.CanWrite);
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Type type = (Type)gtype;
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Dictionary<IntPtr, PropertyInfo> gtype_properties;
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if (!Properties.TryGetValue (type, out gtype_properties)) {
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gtype_properties = new Dictionary<IntPtr, PropertyInfo> ();
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Properties [type] = gtype_properties;
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}
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gtype_properties.Add (param_spec, pinfo);
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idx++;
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} catch (ArgumentException) {
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throw new InvalidOperationException (String.Format ("GLib.PropertyAttribute cannot be applied to property {0} of type {1} because the return type of the property is not supported",
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pinfo.Name, Type.FullName));
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}
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}
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}
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}
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void AddInterfaceProperties ()
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{
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foreach (Type iface in Type.GetInterfaces ()) {
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if (!iface.IsDefined (typeof (GInterfaceAttribute), true))
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continue;
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GInterfaceAttribute attr = iface.GetCustomAttributes (typeof (GInterfaceAttribute), false) [0] as GInterfaceAttribute;
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GInterfaceAdapter adapter = Activator.CreateInstance (attr.AdapterType, null) as GInterfaceAdapter;
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foreach (PropertyInfo p in iface.GetProperties ()) {
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PropertyAttribute[] attrs = p.GetCustomAttributes (typeof (PropertyAttribute), true) as PropertyAttribute [];
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if (attrs.Length == 0)
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continue;
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PropertyAttribute property_attr = attrs [0];
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PropertyInfo declared_prop = Type.GetProperty (p.Name, BindingFlags.Public | BindingFlags.Instance);
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if (declared_prop == null)
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continue;
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IntPtr param_spec = FindInterfaceProperty (adapter.GInterfaceGType, property_attr.Name);
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Dictionary<IntPtr, PropertyInfo> props;
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if (!Properties.TryGetValue (Type, out props)) {
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props = new Dictionary<IntPtr, PropertyInfo> ();
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Properties [Type] = props;
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}
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props [param_spec] = declared_prop;
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}
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}
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}
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void ConnectDefaultHandlers ()
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{
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foreach (MethodInfo minfo in Type.GetMethods(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.DeclaredOnly)) {
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MethodInfo baseinfo = minfo.GetBaseDefinition ();
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if (baseinfo == minfo)
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continue;
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foreach (object attr in baseinfo.GetCustomAttributes (typeof (DefaultSignalHandlerAttribute), false)) {
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DefaultSignalHandlerAttribute sigattr = attr as DefaultSignalHandlerAttribute;
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MethodInfo connector = sigattr.Type.GetMethod (sigattr.ConnectionMethod, BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof (GType) }, new ParameterModifier [0]);
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object[] parms = new object [1];
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parms [0] = gtype;
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connector.Invoke (null, parms);
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break;
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}
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}
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}
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void InvokeTypeInitializers ()
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{
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object[] parms = {gtype, Type};
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BindingFlags flags = BindingFlags.Static | BindingFlags.NonPublic;
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foreach (TypeInitializerAttribute tia in Type.GetCustomAttributes (typeof (TypeInitializerAttribute), true)) {
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MethodInfo m = tia.Type.GetMethod (tia.MethodName, flags);
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if (m != null)
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m.Invoke (null, parms);
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}
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}
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}
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[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
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delegate IntPtr ConstructorDelegate (IntPtr gtype, uint n_construct_properties, IntPtr construct_properties);
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static ConstructorDelegate constructor_handler;
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static ConstructorDelegate ConstructorHandler {
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get {
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if (constructor_handler == null)
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constructor_handler = new ConstructorDelegate (ConstructorCallback);
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return constructor_handler;
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}
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}
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_param_spec_get_name (IntPtr pspec);
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static IntPtr ConstructorCallback (IntPtr gtypeval, uint n_construct_properties, IntPtr construct_properties)
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{
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GType gtype = new GLib.GType (gtypeval);
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GObjectClass threshold_class = (GObjectClass) Marshal.PtrToStructure (gtype.GetThresholdType ().GetClassPtr (), typeof (GObjectClass));
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IntPtr raw = threshold_class.constructor_cb (gtypeval, n_construct_properties, construct_properties);
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Dictionary<IntPtr, GLib.Value> deferred;
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GLib.Object obj = null;
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for (int i = 0; i < n_construct_properties; i++) {
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IntPtr p = new IntPtr (construct_properties.ToInt64 () + i * 2 * IntPtr.Size);
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string prop_name = Marshaller.Utf8PtrToString (g_param_spec_get_name (Marshal.ReadIntPtr (p)));
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if (prop_name != "gtk-sharp-managed-instance")
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continue;
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Value val = (Value) Marshal.PtrToStructure (Marshal.ReadIntPtr (p, IntPtr.Size), typeof (Value));
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if ((IntPtr) val.Val != IntPtr.Zero) {
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GCHandle gch = (GCHandle) (IntPtr) val.Val;
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obj = (GLib.Object) gch.Target;
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obj.Raw = raw;
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break;
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}
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}
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if (obj == null)
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obj = GetObject (raw, false);
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if(PropertiesToSet.TryGetValue(raw, out deferred)) {
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foreach(var item in deferred) {
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SetDeferredProperty(obj, item.Value, item.Key);
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}
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PropertiesToSet.Remove(raw);
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}
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return raw;
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}
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern void g_object_class_override_property (IntPtr klass, uint prop_id, IntPtr name);
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public static void OverrideProperty (IntPtr oclass, uint property_id, string name)
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{
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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g_object_class_override_property (oclass, property_id, native_name);
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}
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[Obsolete ("Use OverrideProperty(oclass,property_id,name)")]
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public static void OverrideProperty (IntPtr declaring_class, string name)
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{
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OverrideProperty (declaring_class, idx, name);
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idx++;
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}
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_object_class_find_property (IntPtr klass, IntPtr name);
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static IntPtr FindClassProperty (GLib.Object o, string name)
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{
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IntPtr gobjectclass = Marshal.ReadIntPtr (o.Handle);
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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return g_object_class_find_property (gobjectclass, native_name);
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}
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_object_interface_find_property (IntPtr klass, IntPtr name);
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static IntPtr FindInterfaceProperty (GType type, string name)
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{
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IntPtr g_iface = type.GetDefaultInterfacePtr ();
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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return g_object_interface_find_property (g_iface, native_name);
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}
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[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
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static extern void g_object_class_install_property (IntPtr klass, uint prop_id, IntPtr param_spec);
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static IntPtr RegisterProperty (GType type, string name, string nick, string blurb, uint property_id, GType property_type, bool can_read, bool can_write)
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{
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IntPtr declaring_class = type.GetClassPtr ();
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ParamSpec pspec = new ParamSpec (name, nick, blurb, property_type, can_read, can_write);
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g_object_class_install_property (declaring_class, property_id, pspec.Handle);
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return pspec.Handle;
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}
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[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
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delegate void GetPropertyDelegate (IntPtr GObject, uint property_id, ref GLib.Value value, IntPtr pspec);
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static void GetPropertyCallback (IntPtr handle, uint property_id, ref GLib.Value value, IntPtr param_spec)
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{
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GLib.Object obj = GLib.Object.GetObject (handle, false);
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var type = (Type)obj.LookupGType ();
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Dictionary<IntPtr, PropertyInfo> props;
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if (!Properties.TryGetValue (type, out props))
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return;
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PropertyInfo prop;
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if (!props.TryGetValue (param_spec, out prop))
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return;
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value.Val = prop.GetValue (obj, new object [0]);
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}
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static GetPropertyDelegate get_property_handler;
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static GetPropertyDelegate GetPropertyHandler {
|
|
get {
|
|
if (get_property_handler == null)
|
|
get_property_handler = new GetPropertyDelegate (GetPropertyCallback);
|
|
return get_property_handler;
|
|
}
|
|
}
|
|
|
|
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
|
|
delegate void SetPropertyDelegate (IntPtr GObject, uint property_id, ref GLib.Value value, IntPtr pspec);
|
|
|
|
static void SetPropertyCallback(IntPtr handle, uint property_id, ref GLib.Value value, IntPtr param_spec)
|
|
{
|
|
// There are multiple issues in this place.
|
|
// We cannot construct an object here as it can be in construction
|
|
// from ConstructorCallback thus managed object already created.
|
|
//
|
|
// We cannot use the "gtk-sharp-managed-instance" property as when
|
|
// constructed by Gtk.Builder it is set to null.
|
|
//
|
|
// We defer setting the properties to later time when
|
|
// we have unmanaged and managed objects paired.
|
|
GLib.Object obj = TryGetObject(handle);
|
|
if(obj != null) {
|
|
SetDeferredProperty(obj, value, param_spec);
|
|
return;
|
|
}
|
|
Dictionary<IntPtr, GLib.Value> deferred;
|
|
if(!PropertiesToSet.TryGetValue(handle, out deferred)) {
|
|
deferred = new Dictionary<IntPtr, GLib.Value>();
|
|
PropertiesToSet.Add(handle, deferred);
|
|
}
|
|
deferred[param_spec] = value;
|
|
}
|
|
|
|
static void SetDeferredProperty(GLib.Object obj, GLib.Value value, IntPtr param_spec)
|
|
{
|
|
var type = (Type)obj.LookupGType ();
|
|
|
|
Dictionary<IntPtr, PropertyInfo> props;
|
|
if (!Properties.TryGetValue (type, out props))
|
|
return;
|
|
|
|
PropertyInfo prop;
|
|
if (!props.TryGetValue (param_spec, out prop))
|
|
return;
|
|
|
|
prop.SetValue (obj, value.Val, new object [0]);
|
|
}
|
|
|
|
static SetPropertyDelegate set_property_handler;
|
|
static SetPropertyDelegate SetPropertyHandler {
|
|
get {
|
|
if (set_property_handler == null)
|
|
set_property_handler = new SetPropertyDelegate (SetPropertyCallback);
|
|
return set_property_handler;
|
|
}
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern void g_type_add_interface_static (IntPtr gtype, IntPtr iface_type, ref GInterfaceInfo info);
|
|
|
|
protected internal static GType RegisterGType (System.Type t)
|
|
{
|
|
//this is a deprecated way of tracking a property counter,
|
|
//but we may still need it for backwards compatibility
|
|
idx = 1;
|
|
|
|
return new ClassInitializer (t).Init ();
|
|
}
|
|
|
|
protected GType LookupGType ()
|
|
{
|
|
if (Handle != IntPtr.Zero) {
|
|
GTypeInstance obj = (GTypeInstance) Marshal.PtrToStructure (Handle, typeof (GTypeInstance));
|
|
GTypeClass klass = (GTypeClass) Marshal.PtrToStructure (obj.g_class, typeof (GTypeClass));
|
|
return new GLib.GType (klass.gtype);
|
|
} else {
|
|
return LookupGType (GetType ());
|
|
}
|
|
}
|
|
|
|
protected internal static GType LookupGType (System.Type t)
|
|
{
|
|
return GType.LookupGObjectType (t);
|
|
}
|
|
|
|
protected Object (IntPtr raw)
|
|
{
|
|
Raw = raw;
|
|
}
|
|
|
|
protected Object ()
|
|
{
|
|
CreateNativeObject (new string [0], new GLib.Value [0]);
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern IntPtr g_object_new (IntPtr gtype, IntPtr dummy);
|
|
|
|
struct GParameter {
|
|
public IntPtr name;
|
|
public GLib.Value val;
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern IntPtr g_object_newv (IntPtr gtype, int n_params, GParameter[] parms);
|
|
|
|
protected virtual void CreateNativeObject (string[] names, GLib.Value[] vals)
|
|
{
|
|
GType gtype = LookupGType ();
|
|
bool is_managed_subclass = GType.IsManaged (gtype);
|
|
GParameter[] parms = new GParameter [is_managed_subclass ? names.Length + 1 : names.Length];
|
|
for (int i = 0; i < names.Length; i++) {
|
|
parms [i].name = GLib.Marshaller.StringToPtrGStrdup (names [i]);
|
|
parms [i].val = vals [i];
|
|
}
|
|
|
|
if (is_managed_subclass) {
|
|
GCHandle gch = GCHandle.Alloc (this);
|
|
parms[names.Length].name = GLib.Marshaller.StringToPtrGStrdup ("gtk-sharp-managed-instance");
|
|
parms[names.Length].val = new GLib.Value ((IntPtr) gch);
|
|
Raw = g_object_newv (gtype.Val, parms.Length, parms);
|
|
gch.Free ();
|
|
} else {
|
|
Raw = g_object_newv (gtype.Val, parms.Length, parms);
|
|
}
|
|
|
|
foreach (GParameter p in parms)
|
|
GLib.Marshaller.Free (p.name);
|
|
}
|
|
|
|
protected virtual IntPtr Raw {
|
|
get {
|
|
return handle;
|
|
}
|
|
set {
|
|
if (handle == value)
|
|
return;
|
|
|
|
lock (Objects) {
|
|
if (handle != IntPtr.Zero) {
|
|
Objects.Remove (handle);
|
|
if (tref != null) {
|
|
tref.Dispose ();
|
|
tref = null;
|
|
}
|
|
}
|
|
|
|
handle = value;
|
|
if (value != IntPtr.Zero) {
|
|
tref = new ToggleRef (this);
|
|
Objects [value] = tref;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public static GLib.GType GType {
|
|
get { return GType.Object; }
|
|
}
|
|
|
|
protected string TypeName {
|
|
get { return NativeType.ToString (); }
|
|
}
|
|
|
|
internal GLib.GType NativeType {
|
|
get { return LookupGType (); }
|
|
}
|
|
|
|
internal ToggleRef ToggleRef {
|
|
get { return tref; }
|
|
}
|
|
|
|
public IntPtr Handle {
|
|
get { return handle; }
|
|
}
|
|
|
|
public IntPtr OwnedHandle {
|
|
get { return g_object_ref (handle); }
|
|
}
|
|
|
|
public void AddNotification (string property, NotifyHandler handler)
|
|
{
|
|
AddSignalHandler ("notify::" + property, handler, typeof(NotifyArgs));
|
|
}
|
|
|
|
public void AddNotification (NotifyHandler handler)
|
|
{
|
|
AddSignalHandler ("notify", handler, typeof(NotifyArgs));
|
|
}
|
|
|
|
public void RemoveNotification (string property, NotifyHandler handler)
|
|
{
|
|
RemoveSignalHandler ("notify::" + property, handler);
|
|
}
|
|
|
|
public void RemoveNotification (NotifyHandler handler)
|
|
{
|
|
RemoveSignalHandler ("notify", handler);
|
|
}
|
|
|
|
public override int GetHashCode ()
|
|
{
|
|
return Handle.GetHashCode ();
|
|
}
|
|
|
|
System.Collections.Hashtable data;
|
|
public System.Collections.Hashtable Data {
|
|
get {
|
|
if (data == null)
|
|
data = new System.Collections.Hashtable ();
|
|
|
|
return data;
|
|
}
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern void g_object_get_property (IntPtr obj, IntPtr name, ref GLib.Value val);
|
|
|
|
public GLib.Value GetProperty (string name)
|
|
{
|
|
Value val = new Value (this, name);
|
|
IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
|
|
g_object_get_property (Raw, native_name, ref val);
|
|
GLib.Marshaller.Free (native_name);
|
|
return val;
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern void g_object_set_property (IntPtr obj, IntPtr name, ref GLib.Value val);
|
|
|
|
public void SetProperty (string name, GLib.Value val)
|
|
{
|
|
IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
|
|
g_object_set_property (Raw, native_name, ref val);
|
|
GLib.Marshaller.Free (native_name);
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern void g_object_notify (IntPtr obj, IntPtr property_name);
|
|
|
|
protected void Notify (string property_name)
|
|
{
|
|
IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (property_name);
|
|
g_object_notify (Handle, native_name);
|
|
GLib.Marshaller.Free (native_name);
|
|
}
|
|
|
|
Dictionary<string, Signal> signals;
|
|
Dictionary<string, Signal> Signals {
|
|
get {
|
|
if (signals == null)
|
|
signals = new Dictionary<string, Signal> ();
|
|
return signals;
|
|
}
|
|
}
|
|
|
|
public void AddSignalHandler (string name, Delegate handler)
|
|
{
|
|
AddSignalHandler (name, handler, typeof (EventArgs));
|
|
}
|
|
|
|
public void AddSignalHandler (string name, Delegate handler, Delegate marshaler)
|
|
{
|
|
Signal sig;
|
|
if (!Signals.TryGetValue (name, out sig)) {
|
|
sig = new Signal (this, name, marshaler);
|
|
Signals [name] = sig;
|
|
}
|
|
|
|
sig.AddDelegate (handler);
|
|
}
|
|
|
|
public void AddSignalHandler (string name, Delegate handler, Type args_type)
|
|
{
|
|
if (args_type == null)
|
|
args_type = handler.Method.GetParameters ()[1].ParameterType;
|
|
|
|
Signal sig;
|
|
if (!Signals.TryGetValue (name, out sig)) {
|
|
sig = new Signal (this, name, args_type);
|
|
Signals [name] = sig;
|
|
}
|
|
|
|
sig.AddDelegate (handler);
|
|
}
|
|
|
|
public void RemoveSignalHandler (string name, Delegate handler)
|
|
{
|
|
Signal sig;
|
|
if (Signals.TryGetValue (name, out sig))
|
|
sig.RemoveDelegate (handler);
|
|
}
|
|
|
|
protected static void OverrideVirtualMethod (GType gtype, string name, Delegate cb)
|
|
{
|
|
Signal.OverrideDefaultHandler (gtype, name, cb);
|
|
}
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
protected static extern void g_signal_chain_from_overridden (IntPtr args, ref GLib.Value retval);
|
|
|
|
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern bool g_type_check_instance_is_a (IntPtr obj, IntPtr gtype);
|
|
|
|
internal static bool IsObject (IntPtr obj)
|
|
{
|
|
return g_type_check_instance_is_a (obj, GType.Object.Val);
|
|
}
|
|
|
|
public struct GTypeInstance {
|
|
public IntPtr g_class;
|
|
}
|
|
|
|
public static uint instance_offset { get { return 0; }}
|
|
public uint GetFieldOffset(string field) { throw new NotImplementedException(); return 0; }
|
|
public struct GObject {
|
|
public GTypeInstance type_instance;
|
|
public uint ref_count;
|
|
public IntPtr qdata;
|
|
}
|
|
|
|
protected int RefCount {
|
|
get {
|
|
GObject native = (GObject) Marshal.PtrToStructure (Handle, typeof (GObject));
|
|
return (int) native.ref_count;
|
|
}
|
|
}
|
|
|
|
internal void Harden ()
|
|
{
|
|
tref.Harden ();
|
|
}
|
|
|
|
static Object ()
|
|
{
|
|
if (Environment.GetEnvironmentVariable ("GTK_SHARP_DEBUG") != null)
|
|
GLib.Log.SetLogHandler ("GLib-GObject", GLib.LogLevelFlags.All, new GLib.LogFunc (GLib.Log.PrintTraceLogFunction));
|
|
}
|
|
}
|
|
}
|