mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2024-09-09 00:13:20 +02:00
514 lines
13 KiB
C#
514 lines
13 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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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2004-2005 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.Reflection;
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using System.Runtime.InteropServices;
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using System.Text;
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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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Hashtable data;
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static Hashtable Objects = new Hashtable();
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static ArrayList PendingDestroys = new ArrayList ();
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static bool idle_queued;
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~Object ()
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{
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lock (PendingDestroys) {
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lock (Objects) {
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if (Objects[Handle] is ToggleRef)
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PendingDestroys.Add (Objects [Handle]);
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Objects.Remove (Handle);
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}
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if (!idle_queued){
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Timeout.Add (50, new TimeoutHandler (PerformQueuedUnrefs));
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idle_queued = true;
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}
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}
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_object_unref (IntPtr raw);
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static bool PerformQueuedUnrefs ()
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{
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object [] references;
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lock (PendingDestroys){
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references = new object [PendingDestroys.Count];
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PendingDestroys.CopyTo (references, 0);
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PendingDestroys.Clear ();
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idle_queued = false;
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}
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foreach (ToggleRef r in references)
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r.Free ();
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return false;
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}
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public virtual void Dispose ()
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{
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if (disposed)
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return;
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disposed = true;
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ToggleRef toggle_ref = Objects [Handle] as ToggleRef;
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Objects.Remove (Handle);
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try {
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if (toggle_ref != null)
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toggle_ref.Free ();
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} catch (Exception e) {
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Console.WriteLine ("Exception while disposing a " + this + " in Gtk#");
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throw e;
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}
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handle = IntPtr.Zero;
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GC.SuppressFinalize (this);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_object_ref (IntPtr raw);
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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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if (Objects.Contains (o)) {
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ToggleRef toggle_ref = Objects [o] as ToggleRef;
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if (toggle_ref != null && toggle_ref.IsAlive)
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obj = toggle_ref.Target;
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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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private static void ConnectDefaultHandlers (GType gtype, System.Type t)
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{
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foreach (MethodInfo minfo in t.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);
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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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private static void InvokeClassInitializers (GType gtype, System.Type t)
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{
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object[] parms = {gtype, t};
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BindingFlags flags = BindingFlags.Static | BindingFlags.NonPublic;
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foreach (TypeInitializerAttribute tia in t.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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for (Type curr = t; curr != typeof(GLib.Object); curr = curr.BaseType) {
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if (curr.Assembly.IsDefined (typeof (IgnoreClassInitializersAttribute), false))
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continue;
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foreach (MethodInfo minfo in curr.GetMethods(flags))
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if (minfo.IsDefined (typeof (ClassInitializerAttribute), true))
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minfo.Invoke (null, parms);
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}
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_type_add_interface_static (IntPtr gtype, IntPtr iface_type, ref GInterfaceInfo info);
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static void AddInterfaces (GType gtype, Type t)
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{
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foreach (Type iface in t.GetInterfaces ()) {
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if (!iface.IsDefined (typeof (GInterfaceAttribute), true) || iface.IsAssignableFrom (t.BaseType))
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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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GInterfaceInfo info = adapter.Info;
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g_type_add_interface_static (gtype.Val, adapter.GType.Val, ref info);
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}
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}
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[DllImport("glibsharpglue-2")]
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static extern IntPtr gtksharp_register_type (IntPtr name, IntPtr parent_type);
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static int type_uid;
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static string BuildEscapedName (System.Type t)
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{
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string qn = t.FullName;
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// Just a random guess
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StringBuilder sb = new StringBuilder (20 + qn.Length);
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sb.Append ("__gtksharp_");
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sb.Append (type_uid++);
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sb.Append ("_");
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foreach (char c in qn) {
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if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
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sb.Append (c);
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else if (c == '.')
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sb.Append ('_');
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else if ((uint) c <= byte.MaxValue) {
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sb.Append ('+');
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sb.Append (((byte) c).ToString ("x2"));
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} else {
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sb.Append ('-');
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sb.Append (((uint) c).ToString ("x4"));
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}
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}
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return sb.ToString ();
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}
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protected static GType RegisterGType (System.Type t)
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{
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GType parent_gtype = LookupGType (t.BaseType);
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string name = BuildEscapedName (t);
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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GType gtype = new GType (gtksharp_register_type (native_name, parent_gtype.Val));
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GLib.Marshaller.Free (native_name);
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GLib.GType.Register (gtype, t);
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ConnectDefaultHandlers (gtype, t);
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InvokeClassInitializers (gtype, t);
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AddInterfaces (gtype, t);
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g_types[t] = gtype;
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return gtype;
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}
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static Hashtable g_types = new Hashtable ();
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protected GType LookupGType ()
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{
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return LookupGType (GetType ());
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}
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protected internal static GType LookupGType (System.Type t)
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{
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if (g_types.Contains (t))
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return (GType) g_types [t];
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PropertyInfo pi = t.GetProperty ("GType", BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.Public);
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if (pi != null)
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return (GType) pi.GetValue (null, null);
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return RegisterGType (t);
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}
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protected Object (IntPtr raw)
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{
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Raw = raw;
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}
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protected Object ()
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{
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CreateNativeObject (new string [0], new GLib.Value [0]);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_object_new (IntPtr gtype, IntPtr dummy);
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[Obsolete]
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protected Object (GType gtype)
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{
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Raw = g_object_new (gtype.Val, IntPtr.Zero);
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}
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[DllImport("glibsharpglue-2")]
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static extern IntPtr gtksharp_object_newv (IntPtr gtype, int n_params, IntPtr[] names, GLib.Value[] vals);
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protected virtual void CreateNativeObject (string[] names, GLib.Value[] vals)
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{
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IntPtr[] native_names = new IntPtr [names.Length];
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for (int i = 0; i < names.Length; i++)
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native_names [i] = GLib.Marshaller.StringToPtrGStrdup (names [i]);
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Raw = gtksharp_object_newv (LookupGType ().Val, names.Length, native_names, vals);
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foreach (IntPtr p in native_names)
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GLib.Marshaller.Free (p);
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}
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protected virtual IntPtr Raw {
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get {
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return handle;
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}
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set {
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if (handle == value)
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return;
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if (handle != IntPtr.Zero) {
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Objects.Remove (handle);
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if (tref != null) {
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tref.Free ();
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tref = null;
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}
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}
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handle = value;
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if (value != IntPtr.Zero) {
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tref = new ToggleRef (this);
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Objects [value] = tref;
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}
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}
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}
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public static GLib.GType GType {
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get {
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return GType.Object;
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}
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}
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[DllImport("glibsharpglue-2")]
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static extern IntPtr gtksharp_get_type_name (IntPtr raw);
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protected string TypeName {
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get {
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return Marshaller.Utf8PtrToString (gtksharp_get_type_name (Raw));
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}
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}
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internal GLib.GType NativeType {
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get {
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return LookupGType ();
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}
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}
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internal ToggleRef ToggleRef {
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get {
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return tref;
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}
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}
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public IntPtr Handle {
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get {
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return handle;
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}
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}
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Hashtable before_signals;
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[Obsolete ("Replaced by GLib.Signal marshaling mechanism.")]
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protected Hashtable BeforeSignals {
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get {
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if (before_signals == null)
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before_signals = new Hashtable ();
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return before_signals;
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}
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}
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Hashtable after_signals;
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[Obsolete ("Replaced by GLib.Signal marshaling mechanism.")]
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protected Hashtable AfterSignals {
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get {
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if (after_signals == null)
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after_signals = new Hashtable ();
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return after_signals;
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}
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}
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EventHandlerList before_handlers;
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[Obsolete ("Replaced by GLib.Signal marshaling mechanism.")]
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protected EventHandlerList BeforeHandlers {
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get {
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if (before_handlers == null)
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before_handlers = new EventHandlerList ();
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return before_handlers;
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}
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}
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EventHandlerList after_handlers;
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[Obsolete ("Replaced by GLib.Signal marshaling mechanism.")]
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protected EventHandlerList AfterHandlers {
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get {
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if (after_handlers == null)
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after_handlers = new EventHandlerList ();
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return after_handlers;
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}
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}
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[CDeclCallback]
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delegate void NotifyDelegate (IntPtr handle, IntPtr pspec, IntPtr gch);
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void NotifyCallback (IntPtr handle, IntPtr pspec, IntPtr gch)
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{
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try {
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GLib.Signal sig = ((GCHandle) gch).Target as GLib.Signal;
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if (sig == null)
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throw new Exception("Unknown signal GC handle received " + gch);
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NotifyArgs args = new NotifyArgs ();
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args.Args = new object[1];
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args.Args[0] = pspec;
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NotifyHandler handler = (NotifyHandler) sig.Handler;
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handler (GLib.Object.GetObject (handle), args);
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} catch (Exception e) {
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ExceptionManager.RaiseUnhandledException (e, false);
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}
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}
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void ConnectNotification (string signal, NotifyHandler handler)
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{
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Signal sig = Signal.Lookup (this, signal, new NotifyDelegate (NotifyCallback));
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sig.AddDelegate (handler);
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}
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public void AddNotification (string property, NotifyHandler handler)
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{
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ConnectNotification ("notify::" + property, handler);
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}
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public void AddNotification (NotifyHandler handler)
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{
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ConnectNotification ("notify", handler);
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}
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void DisconnectNotification (string signal, NotifyHandler handler)
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{
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Signal sig = Signal.Lookup (this, signal, new NotifyDelegate (NotifyCallback));
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sig.RemoveDelegate (handler);
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}
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public void RemoveNotification (string property, NotifyHandler handler)
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{
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DisconnectNotification ("notify::" + property, handler);
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}
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public void RemoveNotification (NotifyHandler handler)
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{
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DisconnectNotification ("notify", handler);
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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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public Hashtable Data {
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get {
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if (data == null)
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data = new Hashtable ();
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return data;
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}
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}
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Hashtable persistent_data;
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protected Hashtable PersistentData {
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get {
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if (persistent_data == null)
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persistent_data = new Hashtable ();
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return persistent_data;
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}
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_object_get_property (IntPtr obj, IntPtr name, ref GLib.Value val);
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protected GLib.Value GetProperty (string name)
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{
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Value val = new Value (this, name);
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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g_object_get_property (Raw, native_name, ref val);
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GLib.Marshaller.Free (native_name);
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return val;
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_object_set_property (IntPtr obj, IntPtr name, ref GLib.Value val);
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protected void SetProperty (string name, GLib.Value val)
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{
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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g_object_set_property (Raw, native_name, ref val);
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GLib.Marshaller.Free (native_name);
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}
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[DllImport("glibsharpglue-2")]
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static extern void gtksharp_override_virtual_method (IntPtr gtype, IntPtr name, Delegate cb);
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protected static void OverrideVirtualMethod (GType gtype, string name, Delegate cb)
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{
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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gtksharp_override_virtual_method (gtype.Val, native_name, cb);
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GLib.Marshaller.Free (native_name);
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}
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[DllImport("libgobject-2.0-0.dll")]
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protected static extern void g_signal_chain_from_overridden (IntPtr args, ref GLib.Value retval);
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[DllImport("glibsharpglue-2")]
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static extern bool gtksharp_is_object (IntPtr obj);
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internal static bool IsObject (IntPtr obj)
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{
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return gtksharp_is_object (obj);
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}
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[DllImport("glibsharpglue-2")]
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static extern int gtksharp_object_get_ref_count (IntPtr obj);
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protected int RefCount {
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get {
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return gtksharp_object_get_ref_count (Handle);
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}
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}
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}
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}
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