Very basic tray icon for downloader.

2003-11-23  Marco Pesenti Gritti  <marco@gnome.org>

        * embed/Makefile.am:
        * embed/downloader-view.c: (status_icon_activated),
        (show_status_icon), (downloader_view_init),
        (downloader_view_finalize), (download_dialog_delete_cb):
        * lib/egg/Makefile.am:
        * lib/egg/update-from-egg.sh:

        Very basic tray icon for downloader.

1 files changed, 725 insertions, 0 deletions

diff --git a/lib/egg/eggtraymanager.c b/lib/egg/eggtraymanager.c
new file mode 100644
index 000000000..f076a64d3
--- /dev/null
+++ b/lib/egg/eggtraymanager.c
@@ -0,0 +1,725 @@
+/* eggtraymanager.c
+ * Copyright (C) 2002 Anders Carlsson <andersca@gnu.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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 library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+#include <string.h>
+#include <libintl.h>
+
+#include "eggtraymanager.h"
+
+#include <gdk/gdkx.h>
+#include <gtk/gtkinvisible.h>
+#include <gtk/gtksocket.h>
+#include <gtk/gtkwindow.h>
+#include <X11/Xatom.h>
+
+#include "eggmarshalers.h"
+
+#ifndef EGG_COMPILATION
+#ifndef _
+#define _(x) dgettext (GETTEXT_PACKAGE, x)
+#define N_(x) x
+#endif
+#else
+#define _(x) x
+#define N_(x) x
+#endif
+
+/* Signals */
+enum
+{
+  TRAY_ICON_ADDED,
+  TRAY_ICON_REMOVED,
+  MESSAGE_SENT,
+  MESSAGE_CANCELLED,
+  LOST_SELECTION,
+  LAST_SIGNAL
+};
+
+enum {
+  PROP_0,
+  PROP_ORIENTATION
+};
+
+typedef struct
+{
+  long id, len;
+  long remaining_len;
+  
+  long timeout;
+  Window window;
+  char *str;
+} PendingMessage;
+
+static GObjectClass *parent_class = NULL;
+static guint manager_signals[LAST_SIGNAL] = { 0 };
+
+#define SYSTEM_TRAY_REQUEST_DOCK    0
+#define SYSTEM_TRAY_BEGIN_MESSAGE   1
+#define SYSTEM_TRAY_CANCEL_MESSAGE  2
+
+#define SYSTEM_TRAY_ORIENTATION_HORZ 0
+#define SYSTEM_TRAY_ORIENTATION_VERT 1
+
+static gboolean egg_tray_manager_check_running_xscreen (Screen *xscreen);
+
+static void egg_tray_manager_init (EggTrayManager *manager);
+static void egg_tray_manager_class_init (EggTrayManagerClass *klass);
+
+static void egg_tray_manager_finalize     (GObject      *object);
+static void egg_tray_manager_set_property (GObject      *object,
+					   guint         prop_id,
+					   const GValue *value,
+					   GParamSpec   *pspec);
+static void egg_tray_manager_get_property (GObject      *object,
+					   guint         prop_id,
+					   GValue       *value,
+					   GParamSpec   *pspec);
+
+static void egg_tray_manager_unmanage (EggTrayManager *manager);
+
+GType
+egg_tray_manager_get_type (void)
+{
+  static GType our_type = 0;
+
+  if (our_type == 0)
+    {
+      static const GTypeInfo our_info =
+      {
+	sizeof (EggTrayManagerClass),
+	(GBaseInitFunc) NULL,
+	(GBaseFinalizeFunc) NULL,
+	(GClassInitFunc) egg_tray_manager_class_init,
+	NULL, /* class_finalize */
+	NULL, /* class_data */
+	sizeof (EggTrayManager),
+	0,    /* n_preallocs */
+	(GInstanceInitFunc) egg_tray_manager_init
+      };
+
+      our_type = g_type_register_static (G_TYPE_OBJECT, "EggTrayManager", &our_info, 0);
+    }
+
+  return our_type;
+
+}
+
+static void
+egg_tray_manager_init (EggTrayManager *manager)
+{
+  manager->socket_table = g_hash_table_new (NULL, NULL);
+}
+
+static void
+egg_tray_manager_class_init (EggTrayManagerClass *klass)
+{
+  GObjectClass *gobject_class;
+  
+  parent_class = g_type_class_peek_parent (klass);
+  gobject_class = (GObjectClass *)klass;
+
+  gobject_class->finalize = egg_tray_manager_finalize;
+  gobject_class->set_property = egg_tray_manager_set_property;
+  gobject_class->get_property = egg_tray_manager_get_property;
+
+  g_object_class_install_property (gobject_class,
+				   PROP_ORIENTATION,
+				   g_param_spec_enum ("orientation",
+						      _("Orientation"),
+						      _("The orientation of the tray."),
+						      GTK_TYPE_ORIENTATION,
+						      GTK_ORIENTATION_HORIZONTAL,
+						      G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+  
+  manager_signals[TRAY_ICON_ADDED] =
+    g_signal_new ("tray_icon_added",
+		  G_OBJECT_CLASS_TYPE (klass),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (EggTrayManagerClass, tray_icon_added),
+		  NULL, NULL,
+		  g_cclosure_marshal_VOID__OBJECT,
+		  G_TYPE_NONE, 1,
+		  GTK_TYPE_SOCKET);
+
+  manager_signals[TRAY_ICON_REMOVED] =
+    g_signal_new ("tray_icon_removed",
+		  G_OBJECT_CLASS_TYPE (klass),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (EggTrayManagerClass, tray_icon_removed),
+		  NULL, NULL,
+		  g_cclosure_marshal_VOID__OBJECT,
+		  G_TYPE_NONE, 1,
+		  GTK_TYPE_SOCKET);
+  manager_signals[MESSAGE_SENT] =
+    g_signal_new ("message_sent",
+		  G_OBJECT_CLASS_TYPE (klass),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (EggTrayManagerClass, message_sent),
+		  NULL, NULL,
+		  _egg_marshal_VOID__OBJECT_STRING_LONG_LONG,
+		  G_TYPE_NONE, 4,
+		  GTK_TYPE_SOCKET,
+		  G_TYPE_STRING,
+		  G_TYPE_LONG,
+		  G_TYPE_LONG);
+  manager_signals[MESSAGE_CANCELLED] =
+    g_signal_new ("message_cancelled",
+		  G_OBJECT_CLASS_TYPE (klass),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (EggTrayManagerClass, message_cancelled),
+		  NULL, NULL,
+		  _egg_marshal_VOID__OBJECT_LONG,
+		  G_TYPE_NONE, 2,
+		  GTK_TYPE_SOCKET,
+		  G_TYPE_LONG);
+  manager_signals[LOST_SELECTION] =
+    g_signal_new ("lost_selection",
+		  G_OBJECT_CLASS_TYPE (klass),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (EggTrayManagerClass, lost_selection),
+		  NULL, NULL,
+		  g_cclosure_marshal_VOID__VOID,
+		  G_TYPE_NONE, 0);
+
+}
+
+static void
+egg_tray_manager_finalize (GObject *object)
+{
+  EggTrayManager *manager;
+  
+  manager = EGG_TRAY_MANAGER (object);
+
+  egg_tray_manager_unmanage (manager);
+  
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+egg_tray_manager_set_property (GObject      *object,
+			       guint         prop_id,
+			       const GValue *value,
+			       GParamSpec   *pspec)
+{
+  EggTrayManager *manager = EGG_TRAY_MANAGER (object);
+
+  switch (prop_id)
+    {
+    case PROP_ORIENTATION:
+      egg_tray_manager_set_orientation (manager, g_value_get_enum (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+egg_tray_manager_get_property (GObject    *object,
+			       guint       prop_id,
+			       GValue     *value,
+			       GParamSpec *pspec)
+{
+  EggTrayManager *manager = EGG_TRAY_MANAGER (object);
+
+  switch (prop_id)
+    {
+    case PROP_ORIENTATION:
+      g_value_set_enum (value, manager->orientation);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+EggTrayManager *
+egg_tray_manager_new (void)
+{
+  EggTrayManager *manager;
+
+  manager = g_object_new (EGG_TYPE_TRAY_MANAGER, NULL);
+
+  return manager;
+}
+
+static gboolean
+egg_tray_manager_plug_removed (GtkSocket       *socket,
+			       EggTrayManager  *manager)
+{
+  Window *window;
+
+  window = g_object_get_data (G_OBJECT (socket), "egg-tray-child-window");
+
+  g_hash_table_remove (manager->socket_table, GINT_TO_POINTER (*window));
+  g_object_set_data (G_OBJECT (socket), "egg-tray-child-window",
+		     NULL);
+  
+  g_signal_emit (manager, manager_signals[TRAY_ICON_REMOVED], 0, socket);
+
+  /* This destroys the socket. */
+  return FALSE;
+}
+
+static void
+egg_tray_manager_handle_dock_request (EggTrayManager       *manager,
+				      XClientMessageEvent  *xevent)
+{
+  GtkWidget *socket;
+  Window *window;
+  
+  socket = gtk_socket_new ();
+  
+  /* We need to set the child window here
+   * so that the client can call _get functions
+   * in the signal handler
+   */
+  window = g_new (Window, 1);
+  *window = xevent->data.l[2];
+      
+  g_object_set_data_full (G_OBJECT (socket),
+			  "egg-tray-child-window",
+			  window, g_free);
+  g_signal_emit (manager, manager_signals[TRAY_ICON_ADDED], 0,
+		 socket);
+
+  /* Add the socket only if it's been attached */
+  if (GTK_IS_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (socket))))
+    {
+      g_signal_connect (socket, "plug_removed",
+			G_CALLBACK (egg_tray_manager_plug_removed), manager);
+      
+      gtk_socket_add_id (GTK_SOCKET (socket), xevent->data.l[2]);
+
+      g_hash_table_insert (manager->socket_table, GINT_TO_POINTER (xevent->data.l[2]), socket);
+    }
+  else
+    gtk_widget_destroy (socket);
+}
+
+static void
+pending_message_free (PendingMessage *message)
+{
+  g_free (message->str);
+  g_free (message);
+}
+
+static void
+egg_tray_manager_handle_message_data (EggTrayManager       *manager,
+				       XClientMessageEvent  *xevent)
+{
+  GList *p;
+  int len;
+  
+  /* Try to see if we can find the
+   * pending message in the list
+   */
+  for (p = manager->messages; p; p = p->next)
+    {
+      PendingMessage *msg = p->data;
+
+      if (xevent->window == msg->window)
+	{
+	  /* Append the message */
+	  len = MIN (msg->remaining_len, 20);
+
+	  memcpy ((msg->str + msg->len - msg->remaining_len),
+		  &xevent->data, len);
+	  msg->remaining_len -= len;
+
+	  if (msg->remaining_len == 0)
+	    {
+	      GtkSocket *socket;
+
+	      socket = g_hash_table_lookup (manager->socket_table, GINT_TO_POINTER (msg->window));
+
+	      if (socket)
+		{
+		  g_signal_emit (manager, manager_signals[MESSAGE_SENT], 0,
+				 socket, msg->str, msg->id, msg->timeout);
+		}
+	      manager->messages = g_list_remove_link (manager->messages,
+						      p);
+	      
+	      pending_message_free (msg);
+	    }
+
+	  return;
+	}
+    }
+}
+
+static void
+egg_tray_manager_handle_begin_message (EggTrayManager       *manager,
+				       XClientMessageEvent  *xevent)
+{
+  GList *p;
+  PendingMessage *msg;
+
+  /* Check if the same message is
+   * already in the queue and remove it if so
+   */
+  for (p = manager->messages; p; p = p->next)
+    {
+      PendingMessage *msg = p->data;
+
+      if (xevent->window == msg->window &&
+	  xevent->data.l[4] == msg->id)
+	{
+	  /* Hmm, we found it, now remove it */
+	  pending_message_free (msg);
+	  manager->messages = g_list_remove_link (manager->messages, p);
+	  break;
+	}
+    }
+
+  /* Now add the new message to the queue */
+  msg = g_new0 (PendingMessage, 1);
+  msg->window = xevent->window;
+  msg->timeout = xevent->data.l[2];
+  msg->len = xevent->data.l[3];
+  msg->id = xevent->data.l[4];
+  msg->remaining_len = msg->len;
+  msg->str = g_malloc (msg->len + 1);
+  msg->str[msg->len] = '\0';
+  manager->messages = g_list_prepend (manager->messages, msg);
+}
+
+static void
+egg_tray_manager_handle_cancel_message (EggTrayManager       *manager,
+					XClientMessageEvent  *xevent)
+{
+  GtkSocket *socket;
+  
+  socket = g_hash_table_lookup (manager->socket_table, GINT_TO_POINTER (xevent->window));
+  
+  if (socket)
+    {
+      g_signal_emit (manager, manager_signals[MESSAGE_CANCELLED], 0,
+		     socket, xevent->data.l[2]);
+    }
+}
+
+static GdkFilterReturn
+egg_tray_manager_handle_event (EggTrayManager       *manager,
+			       XClientMessageEvent  *xevent)
+{
+  switch (xevent->data.l[1])
+    {
+    case SYSTEM_TRAY_REQUEST_DOCK:
+      egg_tray_manager_handle_dock_request (manager, xevent);
+      return GDK_FILTER_REMOVE;
+
+    case SYSTEM_TRAY_BEGIN_MESSAGE:
+      egg_tray_manager_handle_begin_message (manager, xevent);
+      return GDK_FILTER_REMOVE;
+
+    case SYSTEM_TRAY_CANCEL_MESSAGE:
+      egg_tray_manager_handle_cancel_message (manager, xevent);
+      return GDK_FILTER_REMOVE;
+    default:
+      break;
+    }
+
+  return GDK_FILTER_CONTINUE;
+}
+
+static GdkFilterReturn
+egg_tray_manager_window_filter (GdkXEvent *xev, GdkEvent *event, gpointer data)
+{
+  XEvent *xevent = (GdkXEvent *)xev;
+  EggTrayManager *manager = data;
+
+  if (xevent->type == ClientMessage)
+    {
+      if (xevent->xclient.message_type == manager->opcode_atom)
+	{
+	  return egg_tray_manager_handle_event (manager, (XClientMessageEvent *)xevent);
+	}
+      else if (xevent->xclient.message_type == manager->message_data_atom)
+	{
+	  egg_tray_manager_handle_message_data (manager, (XClientMessageEvent *)xevent);
+	  return GDK_FILTER_REMOVE;
+	}
+    }
+  else if (xevent->type == SelectionClear)
+    {
+      g_signal_emit (manager, manager_signals[LOST_SELECTION], 0);
+      egg_tray_manager_unmanage (manager);
+    }
+  
+  return GDK_FILTER_CONTINUE;
+}
+
+static void
+egg_tray_manager_unmanage (EggTrayManager *manager)
+{
+  Display *display;
+  guint32 timestamp;
+  GtkWidget *invisible;
+
+  if (manager->invisible == NULL)
+    return;
+
+  invisible = manager->invisible;
+  g_assert (GTK_IS_INVISIBLE (invisible));
+  g_assert (GTK_WIDGET_REALIZED (invisible));
+  g_assert (GDK_IS_WINDOW (invisible->window));
+  
+  display = GDK_WINDOW_XDISPLAY (invisible->window);
+  
+  if (XGetSelectionOwner (display, manager->selection_atom) ==
+      GDK_WINDOW_XWINDOW (invisible->window))
+    {
+      timestamp = gdk_x11_get_server_time (invisible->window);      
+      XSetSelectionOwner (display, manager->selection_atom, None, timestamp);
+    }
+
+  gdk_window_remove_filter (invisible->window, egg_tray_manager_window_filter, manager);  
+
+  manager->invisible = NULL; /* prior to destroy for reentrancy paranoia */
+  gtk_widget_destroy (invisible);
+  g_object_unref (G_OBJECT (invisible));
+}
+
+static void
+egg_tray_manager_set_orientation_property (EggTrayManager *manager)
+{
+  gulong data[1];
+
+  if (!manager->invisible || !manager->invisible->window)
+    return;
+
+  g_assert (manager->orientation_atom != None);
+
+  data[0] = manager->orientation == GTK_ORIENTATION_HORIZONTAL ?
+		SYSTEM_TRAY_ORIENTATION_HORZ :
+		SYSTEM_TRAY_ORIENTATION_VERT;
+
+  XChangeProperty (GDK_WINDOW_XDISPLAY (manager->invisible->window),
+		   GDK_WINDOW_XWINDOW (manager->invisible->window),
+		   manager->orientation_atom,
+		   XA_CARDINAL, 32,
+		   PropModeReplace,
+		   (guchar *) &data, 1);
+}
+
+static gboolean
+egg_tray_manager_manage_xscreen (EggTrayManager *manager, Screen *xscreen)
+{
+  GtkWidget *invisible;
+  char *selection_atom_name;
+  guint32 timestamp;
+  GdkScreen *screen;
+  
+  g_return_val_if_fail (EGG_IS_TRAY_MANAGER (manager), FALSE);
+  g_return_val_if_fail (manager->screen == NULL, FALSE);
+
+  /* If there's already a manager running on the screen
+   * we can't create another one.
+   */
+#if 0
+  if (egg_tray_manager_check_running_xscreen (xscreen))
+    return FALSE;
+#endif
+  screen = gdk_display_get_screen (gdk_x11_lookup_xdisplay (DisplayOfScreen (xscreen)),
+				   XScreenNumberOfScreen (xscreen));
+  
+  invisible = gtk_invisible_new_for_screen (screen);
+  gtk_widget_realize (invisible);
+  
+  gtk_widget_add_events (invisible, GDK_PROPERTY_CHANGE_MASK | GDK_STRUCTURE_MASK);
+
+  selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d",
+					 XScreenNumberOfScreen (xscreen));
+  manager->selection_atom = XInternAtom (DisplayOfScreen (xscreen), selection_atom_name, False);
+
+  g_free (selection_atom_name);
+
+  manager->orientation_atom = XInternAtom (DisplayOfScreen (xscreen),
+					   "_NET_SYSTEM_TRAY_ORIENTATION",
+					   FALSE);
+  egg_tray_manager_set_orientation_property (manager);
+  
+  timestamp = gdk_x11_get_server_time (invisible->window);
+  XSetSelectionOwner (DisplayOfScreen (xscreen), manager->selection_atom,
+		      GDK_WINDOW_XWINDOW (invisible->window), timestamp);
+
+  /* Check if we were could set the selection owner successfully */
+  if (XGetSelectionOwner (DisplayOfScreen (xscreen), manager->selection_atom) ==
+      GDK_WINDOW_XWINDOW (invisible->window))
+    {
+      XClientMessageEvent xev;
+
+      xev.type = ClientMessage;
+      xev.window = RootWindowOfScreen (xscreen);
+      xev.message_type = XInternAtom (DisplayOfScreen (xscreen), "MANAGER", False);
+
+      xev.format = 32;
+      xev.data.l[0] = timestamp;
+      xev.data.l[1] = manager->selection_atom;
+      xev.data.l[2] = GDK_WINDOW_XWINDOW (invisible->window);
+      xev.data.l[3] = 0;	/* manager specific data */
+      xev.data.l[4] = 0;	/* manager specific data */
+
+      XSendEvent (DisplayOfScreen (xscreen),
+		  RootWindowOfScreen (xscreen),
+		  False, StructureNotifyMask, (XEvent *)&xev);
+
+      manager->invisible = invisible;
+      g_object_ref (G_OBJECT (manager->invisible));
+      
+      manager->opcode_atom = XInternAtom (DisplayOfScreen (xscreen),
+					  "_NET_SYSTEM_TRAY_OPCODE",
+					  False);
+
+      manager->message_data_atom = XInternAtom (DisplayOfScreen (xscreen),
+						"_NET_SYSTEM_TRAY_MESSAGE_DATA",
+						False);
+
+      /* Add a window filter */
+      gdk_window_add_filter (invisible->window, egg_tray_manager_window_filter, manager);
+      return TRUE;
+    }
+  else
+    {
+      gtk_widget_destroy (invisible);
+ 
+      return FALSE;
+    }
+}
+
+gboolean
+egg_tray_manager_manage_screen (EggTrayManager *manager,
+				GdkScreen      *screen)
+{
+  g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
+  g_return_val_if_fail (manager->screen == NULL, FALSE);
+
+  return egg_tray_manager_manage_xscreen (manager, 
+					  GDK_SCREEN_XSCREEN (screen));
+}
+
+static gboolean
+egg_tray_manager_check_running_xscreen (Screen *xscreen)
+{
+  Atom selection_atom;
+  char *selection_atom_name;
+
+  selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d",
+					 XScreenNumberOfScreen (xscreen));
+  selection_atom = XInternAtom (DisplayOfScreen (xscreen), selection_atom_name, False);
+  g_free (selection_atom_name);
+
+  if (XGetSelectionOwner (DisplayOfScreen (xscreen), selection_atom))
+    return TRUE;
+  else
+    return FALSE;
+}
+
+gboolean
+egg_tray_manager_check_running (GdkScreen *screen)
+{
+  g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
+
+  return egg_tray_manager_check_running_xscreen (GDK_SCREEN_XSCREEN (screen));
+}
+
+char *
+egg_tray_manager_get_child_title (EggTrayManager *manager,
+				  EggTrayManagerChild *child)
+{
+  Window *child_window;
+  Atom utf8_string, atom, type;
+  int result;
+  char *retval;
+  int format;
+  gulong nitems;
+  gulong bytes_after;
+  guchar *val;
+
+  g_return_val_if_fail (EGG_IS_TRAY_MANAGER (manager), NULL);
+  g_return_val_if_fail (GTK_IS_SOCKET (child), NULL);
+  
+  child_window = g_object_get_data (G_OBJECT (child),
+				    "egg-tray-child-window");
+
+  utf8_string = XInternAtom (GDK_DISPLAY (), "UTF8_STRING", False);
+  atom = XInternAtom (GDK_DISPLAY (), "_NET_WM_NAME", False);
+
+  gdk_error_trap_push ();
+
+  result = XGetWindowProperty (GDK_DISPLAY (),
+			       *child_window,
+			       atom,
+			       0, G_MAXLONG,
+			       False, utf8_string,
+			       &type, &format, &nitems,
+			       &bytes_after, (guchar **)&val);
+  
+  if (gdk_error_trap_pop () || result != Success)
+    return NULL;
+
+  if (type != utf8_string ||
+      format != 8 ||
+      nitems == 0)
+    {
+      if (val)
+	XFree (val);
+      return NULL;
+    }
+
+  if (!g_utf8_validate (val, nitems, NULL))
+    {
+      XFree (val);
+      return NULL;
+    }
+
+  retval = g_strndup (val, nitems);
+
+  XFree (val);
+
+  return retval;
+
+}
+
+void
+egg_tray_manager_set_orientation (EggTrayManager *manager,
+				  GtkOrientation  orientation)
+{
+  g_return_if_fail (EGG_IS_TRAY_MANAGER (manager));
+
+  if (manager->orientation != orientation)
+    {
+      manager->orientation = orientation;
+
+      egg_tray_manager_set_orientation_property (manager);
+
+      g_object_notify (G_OBJECT (manager), "orientation");
+    }
+}
+
+GtkOrientation
+egg_tray_manager_get_orientation (EggTrayManager *manager)
+{
+  g_return_val_if_fail (EGG_IS_TRAY_MANAGER (manager), GTK_ORIENTATION_HORIZONTAL);
+
+  return manager->orientation;
+}