GNOME.org
 

[gtk+] plug: Merge gtkplug-x11.c back into gtkplug.c

commit 1d804004785fb78df40d95afefa0235f39bed5b2
Author: Benjamin Otte <otte redhat com>
Date:   Fri Jan 28 12:06:24 2011 +0100

    plug: Merge gtkplug-x11.c back into gtkplug.c

 gtk/Makefile.am      |    2 -
 gtk/gtkplug-x11.c    |  390 ------------------------------------
 gtk/gtkplug.c        |  537 ++++++++++++++++++++++++++++++++++++++------------
 gtk/gtkplugprivate.h |  153 --------------
 4 files changed, 415 insertions(+), 667 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 877ba7c..1fa1d04 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -408,7 +408,6 @@ gtk_private_h_sources =		\
 	gtknumerableiconprivate.h \
 	gtkpango.h		\
 	gtkpathbar.h		\
-	gtkplugprivate.h	\
 	gtkprintoperation-private.h \
 	gtkprintutils.h		\
 	gtkprivate.h		\
@@ -724,7 +723,6 @@ endif
 
 gtk_use_x11_c_sources = 	\
 	gtkplug.c		\
-	gtkplug-x11.c		\
 	gtksocket.c		\
 	gtksocket-x11.c		\
 	gtkxembed.c		\
diff --git a/gtk/gtkplug.c b/gtk/gtkplug.c
index 0ccb6de..1c5d6be 100644
--- a/gtk/gtkplug.c
+++ b/gtk/gtkplug.c
@@ -27,15 +27,16 @@
 
 #include "config.h"
 
+#include "gtkdebug.h"
 #include "gtkmain.h"
 #include "gtkmarshalers.h"
 #include "gtkplug.h"
 #include "gtkintl.h"
 #include "gtkprivate.h"
-#include "gtkplugprivate.h"
 #include "gtksocketprivate.h"
 #include "gtkwidgetprivate.h"
 #include "gtkwindowprivate.h"
+#include "gtkxembed.h"
 
 #include <gdk/gdkx.h>
 
@@ -67,6 +68,18 @@
  * </note>
  */
 
+struct _GtkPlugPrivate
+{
+  GtkWidget      *modality_window;
+  GtkWindowGroup *modality_group;
+
+  GdkWindow      *socket_window;
+
+  GHashTable     *grabbed_keys;
+
+  guint  same_app : 1;
+};
+
 static void            gtk_plug_get_property          (GObject     *object,
 						       guint        prop_id,
 						       GValue      *value,
@@ -91,6 +104,9 @@ static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
 static void            gtk_plug_check_resize          (GtkContainer     *container);
 static void            gtk_plug_keys_changed          (GtkWindow        *window);
 
+static void            xembed_set_info                (GdkWindow        *window,
+				                       unsigned long     flags);
+
 static GtkBinClass *bin_class = NULL;
 
 typedef struct
@@ -225,6 +241,50 @@ gtk_plug_init (GtkPlug *plug)
                                             GtkPlugPrivate);
 }
 
+/**
+ * gtk_plug_handle_modality_on:
+ *
+ * @plug: a #GtkPlug
+ *
+ * Called from the GtkPlug backend when the corresponding socket has
+ * told the plug that it modality has toggled on.
+ */
+static void
+gtk_plug_handle_modality_on (GtkPlug *plug)
+{
+  GtkPlugPrivate *priv = plug->priv;
+
+  if (!priv->modality_window)
+    {
+      priv->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
+      gtk_window_set_screen (GTK_WINDOW (priv->modality_window),
+			     gtk_widget_get_screen (GTK_WIDGET (plug)));
+      gtk_widget_realize (priv->modality_window);
+      gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (priv->modality_window));
+      gtk_grab_add (priv->modality_window);
+    }
+}
+
+/**
+ * gtk_plug_handle_modality_off:
+ *
+ * @plug: a #GtkPlug
+ *
+ * Called from the GtkPlug backend when the corresponding socket has
+ * told the plug that it modality has toggled off.
+ */
+static void
+gtk_plug_handle_modality_off (GtkPlug *plug)
+{
+  GtkPlugPrivate *priv = plug->priv;
+
+  if (priv->modality_window)
+    {
+      gtk_widget_destroy (priv->modality_window);
+      priv->modality_window = NULL;
+    }
+}
+
 static void
 gtk_plug_set_is_child (GtkPlug  *plug,
 		       gboolean  is_child)
@@ -237,7 +297,7 @@ gtk_plug_set_is_child (GtkPlug  *plug,
   if (is_child)
     {
       if (priv->modality_window)
-	_gtk_plug_handle_modality_off (plug);
+	gtk_plug_handle_modality_off (plug);
 
       if (priv->modality_group)
 	{
@@ -294,7 +354,7 @@ gtk_plug_get_id (GtkPlug *plug)
   if (!gtk_widget_get_realized (GTK_WIDGET (plug)))
     gtk_widget_realize (GTK_WIDGET (plug));
 
-  return _gtk_plug_windowing_get_id (plug);
+  return GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (plug)));
 }
 
 /**
@@ -628,7 +688,7 @@ gtk_plug_unrealize (GtkWidget *widget)
   if (!priv->same_app)
     {
       if (priv->modality_window)
-	_gtk_plug_handle_modality_off (plug);
+	gtk_plug_handle_modality_off (plug);
 
       gtk_window_group_remove_window (priv->modality_group, GTK_WINDOW (plug));
       g_object_unref (priv->modality_group);
@@ -638,6 +698,315 @@ gtk_plug_unrealize (GtkWidget *widget)
 }
 
 static void
+xembed_set_info (GdkWindow     *window,
+		 unsigned long  flags)
+{
+  GdkDisplay *display = gdk_window_get_display (window);
+  unsigned long buffer[2];
+
+  Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
+
+  buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
+  buffer[1] = flags;
+
+  XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+		   GDK_WINDOW_XID (window),
+		   xembed_info_atom, xembed_info_atom, 32,
+		   PropModeReplace,
+		   (unsigned char *)buffer, 2);
+}
+
+/**
+ * gtk_plug_focus_first_last:
+ *
+ * @plug: a #GtkPlug
+ * @direction: a direction
+ *
+ * Called from the GtkPlug backend when the corresponding socket has
+ * told the plug that it has received the focus.
+ */
+static void
+gtk_plug_focus_first_last (GtkPlug          *plug,
+			   GtkDirectionType  direction)
+{
+  GtkWindow *window = GTK_WINDOW (plug);
+  GtkWidget *focus_widget;
+  GtkWidget *parent;
+
+  focus_widget = gtk_window_get_focus (window);
+  if (focus_widget)
+    {
+      parent = gtk_widget_get_parent (focus_widget);
+      while (parent)
+	{
+	  gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
+	  parent = gtk_widget_get_parent (parent);
+	}
+      
+      gtk_window_set_focus (GTK_WINDOW (plug), NULL);
+    }
+
+  gtk_widget_child_focus (GTK_WIDGET (plug), direction);
+}
+
+static void
+handle_xembed_message (GtkPlug           *plug,
+		       XEmbedMessageType  message,
+		       glong              detail,
+		       glong              data1,
+		       glong              data2,
+		       guint32            time)
+{
+  GtkWindow *window = GTK_WINDOW (plug);
+
+  GTK_NOTE (PLUGSOCKET,
+	    g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
+  
+  switch (message)
+    {
+    case XEMBED_EMBEDDED_NOTIFY:
+      break;
+    case XEMBED_WINDOW_ACTIVATE:
+      _gtk_window_set_is_active (window, TRUE);
+      break;
+    case XEMBED_WINDOW_DEACTIVATE:
+      _gtk_window_set_is_active (window, FALSE);
+      break;
+      
+    case XEMBED_MODALITY_ON:
+      gtk_plug_handle_modality_on (plug);
+      break;
+    case XEMBED_MODALITY_OFF:
+      gtk_plug_handle_modality_off (plug);
+      break;
+
+    case XEMBED_FOCUS_IN:
+      _gtk_window_set_has_toplevel_focus (window, TRUE);
+      switch (detail)
+	{
+	case XEMBED_FOCUS_FIRST:
+	  gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
+	  break;
+	case XEMBED_FOCUS_LAST:
+	  gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
+	  break;
+	case XEMBED_FOCUS_CURRENT:
+	  break;
+	}
+      break;
+
+    case XEMBED_FOCUS_OUT:
+      _gtk_window_set_has_toplevel_focus (window, FALSE);
+      break;
+      
+    case XEMBED_GRAB_KEY:
+    case XEMBED_UNGRAB_KEY:
+    case XEMBED_GTK_GRAB_KEY:
+    case XEMBED_GTK_UNGRAB_KEY:
+    case XEMBED_REQUEST_FOCUS:
+    case XEMBED_FOCUS_NEXT:
+    case XEMBED_FOCUS_PREV:
+      g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
+      break;
+      
+    default:
+      GTK_NOTE(PLUGSOCKET,
+	       g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
+      break;
+    }
+}
+static GdkFilterReturn
+gtk_plug_filter_func (GdkXEvent *gdk_xevent,
+		      GdkEvent  *event,
+		      gpointer   data)
+{
+  GdkScreen *screen = gdk_window_get_screen (event->any.window);
+  GdkDisplay *display = gdk_screen_get_display (screen);
+  GtkPlug *plug = GTK_PLUG (data);
+  GtkPlugPrivate *priv = plug->priv;
+  XEvent *xevent = (XEvent *)gdk_xevent;
+  GHashTableIter iter;
+  gpointer key;
+  GdkFilterReturn return_val;
+
+  return_val = GDK_FILTER_CONTINUE;
+
+  switch (xevent->type)
+    {
+    case ClientMessage:
+      if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
+	{
+	  _gtk_xembed_push_message (xevent);
+	  handle_xembed_message (plug,
+				 xevent->xclient.data.l[1],
+				 xevent->xclient.data.l[2],
+				 xevent->xclient.data.l[3],
+				 xevent->xclient.data.l[4],
+				 xevent->xclient.data.l[0]);
+	  _gtk_xembed_pop_message ();
+
+	  return_val = GDK_FILTER_REMOVE;
+	}
+      else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
+	{
+	  /* We filter these out because we take being reparented back to the
+	   * root window as the reliable end of the embedding protocol
+	   */
+
+	  return_val = GDK_FILTER_REMOVE;
+	}
+      break;
+    case ReparentNotify:
+      {
+	XReparentEvent *xre = &xevent->xreparent;
+        gboolean was_embedded = priv->socket_window != NULL;
+
+	GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received"));
+
+	return_val = GDK_FILTER_REMOVE;
+	
+	g_object_ref (plug);
+	
+	if (was_embedded)
+	  {
+	    /* End of embedding protocol for previous socket */
+	    
+	    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding"));
+	    /* FIXME: race if we remove from another socket and
+	     * then add to a local window before we get notification
+	     * Probably need check in _gtk_plug_add_to_socket
+	     */
+
+            if (xre->parent != GDK_WINDOW_XID (priv->socket_window))
+	      {
+		GtkWidget *widget = GTK_WIDGET (plug);
+
+                gdk_window_set_user_data (priv->socket_window, NULL);
+		g_object_unref (priv->socket_window);
+		priv->socket_window = NULL;
+
+		/* Emit a delete window, as if the user attempted
+		 * to close the toplevel. Simple as to how we
+		 * handle WM_DELETE_WINDOW, if it isn't handled
+		 * we destroy the widget. BUt only do this if
+		 * we are being reparented to the root window.
+		 * Moving from one embedder to another should
+		 * be invisible to the app.
+		 */
+
+		if (xre->parent == GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
+		  {
+		    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()"));
+		    _gtk_plug_send_delete_event (widget);
+
+		    g_object_notify (G_OBJECT (plug), "embedded");
+		  }
+	      }
+	    else
+	      goto done;
+	  }
+
+	if (xre->parent != GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
+	  {
+	    /* Start of embedding protocol */
+
+	    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding"));
+
+            priv->socket_window = gdk_x11_window_lookup_for_display (display, xre->parent);
+            if (priv->socket_window)
+	      {
+		gpointer user_data = NULL;
+		gdk_window_get_user_data (priv->socket_window, &user_data);
+
+		if (user_data)
+		  {
+		    g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
+                    priv->socket_window = NULL;
+		    break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
+		  }
+
+		g_object_ref (priv->socket_window);
+	      }
+	    else
+	      {
+		priv->socket_window = gdk_x11_window_foreign_new_for_display (display, xre->parent);
+		if (!priv->socket_window) /* Already gone */
+		  break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
+	      }
+
+            g_hash_table_iter_init (&iter, priv->grabbed_keys);
+
+            while (g_hash_table_iter_next (&iter, &key, NULL))
+              {
+                GrabbedKey *grabbed_key = key;
+
+                _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_GRAB_KEY, 0,
+                                          grabbed_key->accelerator_key,
+                                          grabbed_key->accelerator_mods);
+              }
+
+	    if (!was_embedded)
+	      g_signal_emit_by_name (plug, "embedded");
+
+	    g_object_notify (G_OBJECT (plug), "embedded");
+	  }
+
+      done:
+	g_object_unref (plug);
+	
+	break;
+      }
+    case KeyPress:
+    case KeyRelease:
+      {
+        GdkModifierType state, consumed;
+        GdkDeviceManager *device_manager;
+        GdkDevice *pointer, *keyboard;
+        GdkKeymap *keymap;
+
+        if (xevent->type == KeyPress)
+          event->key.type = GDK_KEY_PRESS;
+        else
+          event->key.type = GDK_KEY_RELEASE;
+
+        event->key.window = gdk_x11_window_lookup_for_display (display, xevent->xany.window);
+        event->key.send_event = TRUE;
+        event->key.time = xevent->xkey.time;
+        event->key.state = (GdkModifierType) xevent->xkey.state;
+        event->key.hardware_keycode = xevent->xkey.keycode;
+        event->key.keyval = GDK_KEY_VoidSymbol;
+
+        device_manager = gdk_display_get_device_manager (display);
+        pointer = gdk_device_manager_get_client_pointer (device_manager);
+        keyboard = gdk_device_get_associated_device (pointer);
+        gdk_event_set_device (event, keyboard);
+
+        keymap = gdk_keymap_get_for_display (display);
+        gdk_keymap_translate_keyboard_state (keymap,
+                                             event->key.hardware_keycode,
+                                             event->key.state,
+                                             event->key.group,
+                                             &event->key.keyval,
+                                             NULL, NULL, &consumed);
+
+        state = event->key.state & ~consumed;
+        gdk_keymap_add_virtual_modifiers (keymap, &state);
+        event->key.state |= state;
+
+        event->key.length = 0;
+        event->key.string = g_strdup ("");
+
+        /* FIXME: These should be filled in properly */
+        event->key.group = 0;
+        event->key.is_modifier = FALSE;
+
+        return_val = GDK_FILTER_TRANSLATE;
+      }
+    }
+
+  return return_val;
+}
+static void
 gtk_plug_realize (GtkWidget *widget)
 {
   GtkAllocation allocation;
@@ -704,13 +1073,13 @@ gtk_plug_realize (GtkWidget *widget)
 	}
 
       gdk_window_add_filter (gdk_window,
-			     _gtk_plug_windowing_filter_func,
+			     gtk_plug_filter_func,
 			     widget);
 
       priv->modality_group = gtk_window_group_new ();
       gtk_window_group_add_window (priv->modality_group, window);
 
-      _gtk_plug_windowing_realize_toplevel (plug);
+      xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
     }
   else
     {
@@ -767,7 +1136,7 @@ gtk_plug_map (GtkWidget *widget)
 	  !gtk_widget_get_mapped (child))
 	gtk_widget_map (child);
 
-      _gtk_plug_windowing_map_toplevel (plug);
+      xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), XEMBED_MAPPED);
 
       gdk_synthesize_window_state (gtk_widget_get_window (widget),
 				   GDK_WINDOW_STATE_WITHDRAWN,
@@ -791,7 +1160,7 @@ gtk_plug_unmap (GtkWidget *widget)
 
       gdk_window_hide (window);
 
-      _gtk_plug_windowing_unmap_toplevel (plug);
+      xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
 
       gdk_synthesize_window_state (window,
 				   0,
@@ -864,6 +1233,7 @@ gtk_plug_set_focus (GtkWindow *window,
 		    GtkWidget *focus)
 {
   GtkPlug *plug = GTK_PLUG (window);
+  GtkPlugPrivate *priv = plug->priv;
 
   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
   
@@ -871,7 +1241,8 @@ gtk_plug_set_focus (GtkWindow *window,
    */
 
   if (focus && !gtk_window_has_toplevel_focus (window))
-    _gtk_plug_windowing_set_focus (plug);
+    _gtk_xembed_send_message (priv->socket_window,
+                              XEMBED_REQUEST_FOCUS, 0, 0, 0);
 }
 
 static guint
@@ -907,43 +1278,13 @@ add_grabbed_key (gpointer key, gpointer val, gpointer data)
   if (!priv->grabbed_keys ||
       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
     {
-      _gtk_plug_windowing_add_grabbed_key (plug,
-					   grabbed_key->accelerator_key,
-					   grabbed_key->accelerator_mods);
+      _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_GRAB_KEY, 0,
+                                grabbed_key->accelerator_key,
+                                grabbed_key->accelerator_mods);
     }
 }
 
 static void
-add_grabbed_key_always (gpointer key,
-			gpointer val,
-			gpointer data)
-{
-  GrabbedKey *grabbed_key = key;
-  GtkPlug *plug = data;
-
-  _gtk_plug_windowing_add_grabbed_key (plug,
-				       grabbed_key->accelerator_key,
-				       grabbed_key->accelerator_mods);
-}
-
-/**
- * _gtk_plug_add_all_grabbed_keys:
- *
- * @plug: a #GtkPlug
- *
- * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
- * in the @plug.
- */
-void
-_gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
-{
-  GtkPlugPrivate *priv = plug->priv;
-
-  if (priv->grabbed_keys)
-    g_hash_table_foreach (priv->grabbed_keys, add_grabbed_key_always, plug);
-}
-
-static void
 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 {
   GrabbedKey *grabbed_key = key;
@@ -953,9 +1294,9 @@ remove_grabbed_key (gpointer key, gpointer val, gpointer data)
   if (!priv->grabbed_keys ||
       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
     {
-      _gtk_plug_windowing_remove_grabbed_key (plug, 
-					      grabbed_key->accelerator_key,
-					      grabbed_key->accelerator_mods);
+      _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_UNGRAB_KEY, 0,
+                                grabbed_key->accelerator_key,
+                                grabbed_key->accelerator_mods);
     }
 }
 
@@ -1005,6 +1346,34 @@ gtk_plug_keys_changed (GtkWindow *window)
     }
 }
 
+static void
+gtk_plug_focus_to_parent (GtkPlug         *plug,
+			  GtkDirectionType direction)
+{
+  GtkPlugPrivate *priv = plug->priv;
+  XEmbedMessageType message;
+  
+  switch (direction)
+    {
+    case GTK_DIR_UP:
+    case GTK_DIR_LEFT:
+    case GTK_DIR_TAB_BACKWARD:
+      message = XEMBED_FOCUS_PREV;
+      break;
+    case GTK_DIR_DOWN:
+    case GTK_DIR_RIGHT:
+    case GTK_DIR_TAB_FORWARD:
+      message = XEMBED_FOCUS_NEXT;
+      break;
+    default:
+      g_assert_not_reached ();
+      message = XEMBED_FOCUS_PREV;
+      break;
+    }
+
+  _gtk_xembed_send_focus_message (priv->socket_window, message, 0);
+}
+
 static gboolean
 gtk_plug_focus (GtkWidget        *widget,
 		GtkDirectionType  direction)
@@ -1050,7 +1419,7 @@ gtk_plug_focus (GtkWidget        *widget,
     }
 
   if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
-    _gtk_plug_windowing_focus_to_parent (plug, direction);
+    gtk_plug_focus_to_parent (plug, direction);
 
   return FALSE;
 }
@@ -1064,79 +1433,3 @@ gtk_plug_check_resize (GtkContainer *container)
     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 }
 
-/**
- * _gtk_plug_handle_modality_on:
- *
- * @plug: a #GtkPlug
- *
- * Called from the GtkPlug backend when the corresponding socket has
- * told the plug that it modality has toggled on.
- */
-void
-_gtk_plug_handle_modality_on (GtkPlug *plug)
-{
-  GtkPlugPrivate *priv = plug->priv;
-
-  if (!priv->modality_window)
-    {
-      priv->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
-      gtk_window_set_screen (GTK_WINDOW (priv->modality_window),
-			     gtk_widget_get_screen (GTK_WIDGET (plug)));
-      gtk_widget_realize (priv->modality_window);
-      gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (priv->modality_window));
-      gtk_grab_add (priv->modality_window);
-    }
-}
-
-/**
- * _gtk_plug_handle_modality_off:
- *
- * @plug: a #GtkPlug
- *
- * Called from the GtkPlug backend when the corresponding socket has
- * told the plug that it modality has toggled off.
- */
-void
-_gtk_plug_handle_modality_off (GtkPlug *plug)
-{
-  GtkPlugPrivate *priv = plug->priv;
-
-  if (priv->modality_window)
-    {
-      gtk_widget_destroy (priv->modality_window);
-      priv->modality_window = NULL;
-    }
-}
-
-/**
- * _gtk_plug_focus_first_last:
- *
- * @plug: a #GtkPlug
- * @direction: a direction
- *
- * Called from the GtkPlug backend when the corresponding socket has
- * told the plug that it has received the focus.
- */
-void
-_gtk_plug_focus_first_last (GtkPlug          *plug,
-			    GtkDirectionType  direction)
-{
-  GtkWindow *window = GTK_WINDOW (plug);
-  GtkWidget *focus_widget;
-  GtkWidget *parent;
-
-  focus_widget = gtk_window_get_focus (window);
-  if (focus_widget)
-    {
-      parent = gtk_widget_get_parent (focus_widget);
-      while (parent)
-	{
-	  gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
-	  parent = gtk_widget_get_parent (parent);
-	}
-      
-      gtk_window_set_focus (GTK_WINDOW (plug), NULL);
-    }
-
-  gtk_widget_child_focus (GTK_WIDGET (plug), direction);
-}
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