GtkSharp/gtk/Container.cs
Bertrand Lorentz 691de4e606 gtk: Fix dll name and use a const for all DllImports in custom code
In Windows builds of GTK+ 3.x, the dll filename is libgtk-3-0.dll.

We use this opportunity to use a common const in the DllImport
statement for all custom code.
2014-02-23 15:12:20 +01:00

262 lines
8 KiB
C#

// Container.cs - customizations to Gtk.Container
//
// Authors: Mike Kestner <mkestner@ximian.com>
//
// Copyright (c) 2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace Gtk {
using System;
using System.Collections;
using System.Runtime.InteropServices;
public partial class Container : IEnumerable {
[DllImport("gtksharpglue-3")]
static extern void gtksharp_container_child_get_property (IntPtr container, IntPtr child, IntPtr property, ref GLib.Value value);
public GLib.Value ChildGetProperty (Gtk.Widget child, string property_name) {
GLib.Value value = new GLib.Value ();
IntPtr native = GLib.Marshaller.StringToPtrGStrdup (property_name);
gtksharp_container_child_get_property (Handle, child.Handle, native, ref value);
GLib.Marshaller.Free (native);
return value;
}
public IEnumerator GetEnumerator ()
{
return Children.GetEnumerator ();
}
class ChildAccumulator {
public ArrayList Children = new ArrayList ();
public void Add (Gtk.Widget widget)
{
Children.Add (widget);
}
}
public IEnumerable AllChildren {
get {
ChildAccumulator acc = new ChildAccumulator ();
Forall (new Gtk.Callback (acc.Add));
return acc.Children;
}
}
[DllImport (Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern bool gtk_container_get_focus_chain (IntPtr raw, out IntPtr list_ptr);
[DllImport (Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void gtk_container_set_focus_chain (IntPtr raw, IntPtr list_ptr);
public Widget[] FocusChain {
get {
IntPtr list_ptr;
bool success = gtk_container_get_focus_chain (Handle, out list_ptr);
if (!success)
return new Widget [0];
GLib.List list = new GLib.List (list_ptr);
Widget[] result = new Widget [list.Count];
for (int i = 0; i < list.Count; i++)
result [i] = list [i] as Widget;
return result;
}
set {
GLib.List list = new GLib.List (IntPtr.Zero);
foreach (Widget val in value)
list.Append (val.Handle);
gtk_container_set_focus_chain (Handle, list.Handle);
}
}
[DllImport("gtksharpglue-3")]
static extern void gtksharp_container_base_forall (IntPtr handle, bool include_internals, IntPtr cb, IntPtr data);
[DllImport("gtksharpglue-3")]
static extern void gtksharp_container_override_forall (IntPtr gtype, ForallDelegate cb);
[DllImport("gtksharpglue-3")]
static extern void gtksharp_container_invoke_gtk_callback (IntPtr cb, IntPtr handle, IntPtr data);
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
delegate void ForallDelegate (IntPtr container, bool include_internals, IntPtr cb, IntPtr data);
static ForallDelegate ForallOldCallback;
static ForallDelegate ForallCallback;
public struct CallbackInvoker {
IntPtr cb;
IntPtr data;
internal CallbackInvoker (IntPtr cb, IntPtr data)
{
this.cb = cb;
this.data = data;
}
internal IntPtr Data {
get {
return data;
}
}
internal IntPtr Callback {
get {
return cb;
}
}
public void Invoke (Widget w)
{
gtksharp_container_invoke_gtk_callback (cb, w.Handle, data);
}
}
static void ForallOld_cb (IntPtr container, bool include_internals, IntPtr cb, IntPtr data)
{
try {
//GtkContainer's unmanaged dispose calls forall, but by that time the managed object is gone
//so it couldn't do anything useful, and resurrecting it would cause a resurrection cycle.
//In that case, just chain to the native base in case it can do something.
Container obj = (Container) GLib.Object.TryGetObject (container);
if (obj != null) {
CallbackInvoker invoker = new CallbackInvoker (cb, data);
obj.ForAll (include_internals, invoker);
} else {
gtksharp_container_base_forall (container, include_internals, cb, data);
}
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, false);
}
}
static void OverrideForallOld (GLib.GType gtype)
{
if (ForallOldCallback == null)
ForallOldCallback = new ForallDelegate (ForallOld_cb);
gtksharp_container_override_forall (gtype.Val, ForallOldCallback);
}
[Obsolete ("Override the ForAll(bool,Gtk.Callback) method instead")]
[GLib.DefaultSignalHandler (Type=typeof(Gtk.Container), ConnectionMethod="OverrideForallOld")]
protected virtual void ForAll (bool include_internals, CallbackInvoker invoker)
{
gtksharp_container_base_forall (Handle, include_internals, invoker.Callback, invoker.Data);
}
static void Forall_cb (IntPtr container, bool include_internals, IntPtr cb, IntPtr data)
{
try {
//GtkContainer's unmanaged dispose calls forall, but by that time the managed object is gone
//so it couldn't do anything useful, and resurrecting it would cause a resurrection cycle.
//In that case, just chain to the native base in case it can do something.
Container obj = (Container) GLib.Object.TryGetObject (container);
if (obj != null) {
CallbackInvoker invoker = new CallbackInvoker (cb, data);
obj.ForAll (include_internals, new Gtk.Callback (invoker.Invoke));
} else {
gtksharp_container_base_forall (container, include_internals, cb, data);
}
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, false);
}
}
static void OverrideForall (GLib.GType gtype)
{
if (ForallCallback == null)
ForallCallback = new ForallDelegate (Forall_cb);
gtksharp_container_override_forall (gtype.Val, ForallCallback);
}
[GLib.DefaultSignalHandler (Type=typeof(Gtk.Container), ConnectionMethod="OverrideForall")]
protected virtual void ForAll (bool include_internals, Gtk.Callback callback)
{
CallbackInvoker invoker;
try {
invoker = (CallbackInvoker)callback.Target;
} catch {
throw new ApplicationException ("ForAll can only be called as \"base.ForAll()\". Use Forall() or Foreach().");
}
gtksharp_container_base_forall (Handle, include_internals, invoker.Callback, invoker.Data);
}
// Compatibility code for old ChildType() virtual method
static IntPtr ObsoleteChildType_cb (IntPtr raw)
{
try {
Container obj = GLib.Object.GetObject (raw, false) as Container;
GLib.GType gtype = obj.ChildType ();
return gtype.Val;
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, false);
}
return GLib.GType.Invalid.Val;
}
static ChildTypeNativeDelegate ObsoleteChildTypeVMCallback;
static void OverrideObsoleteChildType (GLib.GType gtype)
{
if (ObsoleteChildTypeVMCallback == null)
ObsoleteChildTypeVMCallback = new ChildTypeNativeDelegate (ObsoleteChildType_cb);
OverrideChildType (gtype, ObsoleteChildTypeVMCallback); // -> autogenerated method
}
[Obsolete ("Replaced by OnChildType for implementations and SupportedChildType for callers.")]
[GLib.DefaultSignalHandler (Type=typeof(Gtk.Container), ConnectionMethod="OverrideObsoleteChildType")]
public virtual GLib.GType ChildType() {
return InternalChildType (); // -> autogenerated method
}
public class ContainerChild {
protected Container parent;
protected Widget child;
public ContainerChild (Container parent, Widget child)
{
this.parent = parent;
this.child = child;
}
public Container Parent {
get {
return parent;
}
}
public Widget Child {
get {
return child;
}
}
}
public virtual ContainerChild this [Widget w] {
get {
return new ContainerChild (this, w);
}
}
}
}