path: root/libempathy-gtk/empathy-main-window.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 Collabora Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU 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.
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <sys/stat.h>
#include <gtk/gtk.h>
#include <glade/glade.h>
#include <glib/gi18n.h>

#include <libempathy/gossip-conf.h>
#include <libempathy/gossip-contact.h>
#include <libempathy/gossip-debug.h>
#include <libempathy/gossip-utils.h>

#include "empathy-main-window.h"
#include "ephy-spinner.h"
#include "gossip-contact-list.h"
#include "gossip-presence-chooser.h"
#include "gossip-ui-utils.h"
#include "gossip-status-presets.h"
#include "gossip-geometry.h"
#include "gossip-preferences.h"
#include "gossip-accounts-dialog.h"

#define DEBUG_DOMAIN "MainWindow"

/* Minimum width of roster window if something goes wrong. */
#define MIN_WIDTH 50

/* Accels (menu shortcuts) can be configured and saved */
#define ACCELS_FILENAME "accels.txt"

/* Name in the geometry file */
#define GEOMETRY_NAME "main-window"

typedef struct {
    GossipContactList *contact_list;
    MissionControl    *mc;

    /* Main widgets */
    GtkWidget         *window;
    GtkWidget         *main_vbox;

    /* Tooltips for all widgets */
    GtkTooltips       *tooltips;

    /* Menu widgets */
    GtkWidget         *room;
    GtkWidget         *room_menu;
    GtkWidget         *room_sep;
    GtkWidget         *room_join_favorites;
    GtkWidget         *edit_context;
    GtkWidget         *edit_context_separator;

    /* Throbber */
    GtkWidget         *throbber;

    /* Widgets that are enabled when there is... */
    GList             *widgets_connected;       /* ... connected accounts */
    GList             *widgets_disconnected;    /* ... disconnected accounts */

    /* Status popup */
    GtkWidget         *presence_toolbar;
    GtkWidget         *presence_chooser;

    /* Misc */
    guint              size_timeout_id;
} EmpathyMainWindow;

static void     main_window_destroy_cb                     (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_favorite_chatroom_menu_setup   (void);
static void     main_window_chat_quit_cb                   (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_chat_new_message_cb            (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_chat_history_cb                (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_room_join_new_cb               (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_room_join_favorites_cb         (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_room_manage_favorites_cb       (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_chat_add_contact_cb            (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_chat_show_offline_cb           (GtkCheckMenuItem                *item,
                                EmpathyMainWindow               *window);
static gboolean main_window_edit_button_press_event_cb     (GtkWidget                       *widget,
                                GdkEventButton                  *event,
                                EmpathyMainWindow               *window);
static void     main_window_edit_accounts_cb               (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_edit_personal_information_cb   (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_edit_preferences_cb            (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_help_about_cb                  (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static void     main_window_help_contents_cb               (GtkWidget                       *widget,
                                EmpathyMainWindow               *window);
static gboolean main_window_throbber_button_press_event_cb (GtkWidget                       *throbber_ebox,
                                GdkEventButton                  *event,
                                gpointer                         user_data);
static void     main_window_status_changed_cb              (MissionControl                  *mc,
                                TelepathyConnectionStatus        status,
                                McPresence                       presence,
                                TelepathyConnectionStatusReason  reason,
                                const gchar                     *unique_name,
                                EmpathyMainWindow               *window);
static void     main_window_update_status                  (EmpathyMainWindow               *window);
static void     main_window_accels_load                    (void);
static void     main_window_accels_save                    (void);
static void     main_window_connection_items_setup         (EmpathyMainWindow               *window,
                                GladeXML                        *glade);
static gboolean main_window_configure_event_timeout_cb     (EmpathyMainWindow               *window);
static gboolean main_window_configure_event_cb             (GtkWidget                       *widget,
                                GdkEventConfigure               *event,
                                EmpathyMainWindow               *window);
static void     main_window_notify_show_offline_cb         (GossipConf                      *conf,
                                const gchar                     *key,
                                gpointer                         check_menu_item);
static void     main_window_notify_show_avatars_cb         (GossipConf                      *conf,
                                const gchar                     *key,
                                EmpathyMainWindow               *window);
static void     main_window_notify_compact_contact_list_cb (GossipConf                      *conf,
                                const gchar                     *key,
                                EmpathyMainWindow               *window);
static void     main_window_notify_sort_criterium_cb       (GossipConf                      *conf,
                                const gchar                     *key,
                                EmpathyMainWindow               *window);

GtkWidget *
empathy_main_window_show (void)
{
    static EmpathyMainWindow *window = NULL;
    GladeXML                 *glade;
    GossipConf               *conf;
    GtkWidget                *sw;
    GtkWidget                *show_offline_widget;
    GtkWidget                *ebox;
    GtkToolItem              *item;
    gchar                    *str;
    gboolean                  show_offline;
    gboolean                  show_avatars;
    gboolean                  compact_contact_list;
    gint                      x, y, w, h;

    if (window) {
        gtk_window_present (GTK_WINDOW (window->window));
        return window->window;
    }

    window = g_new0 (EmpathyMainWindow, 1);

    /* Set up interface */
    glade = gossip_glade_get_file ("empathy-main-window.glade",
                       "main_window",
                       NULL,
                       "main_window", &window->window,
                       "main_vbox", &window->main_vbox,
                       "chat_show_offline", &show_offline_widget,
                       "room", &window->room,
                       "room_sep", &window->room_sep,
                       "room_join_favorites", &window->room_join_favorites,
                       "edit_context", &window->edit_context,
                       "edit_context_separator", &window->edit_context_separator,
                       "presence_toolbar", &window->presence_toolbar,
                       "roster_scrolledwindow", &sw,
                       NULL);

    gossip_glade_connect (glade,
                  window,
                  "main_window", "destroy", main_window_destroy_cb,
                  "main_window", "configure_event", main_window_configure_event_cb,
                  "chat_quit", "activate", main_window_chat_quit_cb,
                  "chat_new_message", "activate", main_window_chat_new_message_cb,
                  "chat_history", "activate", main_window_chat_history_cb,
                  "room_join_new", "activate", main_window_room_join_new_cb,
                  "room_join_favorites", "activate", main_window_room_join_favorites_cb,
                  "room_manage_favorites", "activate", main_window_room_manage_favorites_cb,
                  "chat_add_contact", "activate", main_window_chat_add_contact_cb,
                  "chat_show_offline", "toggled", main_window_chat_show_offline_cb,
                  "edit", "button-press-event", main_window_edit_button_press_event_cb,
                  "edit_accounts", "activate", main_window_edit_accounts_cb,
                  "edit_personal_information", "activate", main_window_edit_personal_information_cb,
                  "edit_preferences", "activate", main_window_edit_preferences_cb,
                  "help_about", "activate", main_window_help_about_cb,
                  "help_contents", "activate", main_window_help_contents_cb,
                  NULL);

    /* Set up connection related widgets. */
    main_window_connection_items_setup (window, glade);
    g_object_unref (glade);

    window->tooltips = g_object_ref_sink (gtk_tooltips_new ());
    window->mc = gossip_mission_control_new ();
    dbus_g_proxy_connect_signal (DBUS_G_PROXY (window->mc), "AccountStatusChanged",
                     G_CALLBACK (main_window_status_changed_cb),
                     window, NULL);

    /* Set up menu */
    main_window_favorite_chatroom_menu_setup ();

    gtk_widget_hide (window->edit_context);
    gtk_widget_hide (window->edit_context_separator);

    /* Set up presence chooser */
    window->presence_chooser = gossip_presence_chooser_new ();
    gtk_widget_show (window->presence_chooser);
    item = gtk_tool_item_new ();
    gtk_widget_show (GTK_WIDGET (item));
    gtk_container_add (GTK_CONTAINER (item), window->presence_chooser);
    gtk_tool_item_set_is_important (item, TRUE);
    gtk_tool_item_set_expand (item, TRUE);
    gtk_toolbar_insert (GTK_TOOLBAR (window->presence_toolbar), item, -1);

    /* Set up the throbber */
    ebox = gtk_event_box_new ();
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (ebox), FALSE);

    window->throbber = ephy_spinner_new ();
    ephy_spinner_set_size (EPHY_SPINNER (window->throbber), GTK_ICON_SIZE_LARGE_TOOLBAR);
    gtk_container_add (GTK_CONTAINER (ebox), window->throbber);

    item = gtk_tool_item_new ();
    gtk_container_add (GTK_CONTAINER (item), ebox);
    gtk_widget_show_all (GTK_WIDGET (item));

    gtk_toolbar_insert (GTK_TOOLBAR (window->presence_toolbar), item, -1);

    str = _("Show and edit accounts");
    gtk_tooltips_set_tip (GTK_TOOLTIPS (window->tooltips),
                  ebox, str, str);

    g_signal_connect (ebox,
              "button-press-event",
              G_CALLBACK (main_window_throbber_button_press_event_cb),
              NULL);

    /* Set up contact list. */
    gossip_status_presets_get_all ();
    window->contact_list = gossip_contact_list_new ();
    gtk_widget_show (GTK_WIDGET (window->contact_list));
    gtk_container_add (GTK_CONTAINER (sw),
               GTK_WIDGET (window->contact_list));

    /* Load user-defined accelerators. */
    main_window_accels_load ();

    /* Set window size. */
    gossip_geometry_load (GEOMETRY_NAME, &x, &y, &w, &h);

    if (w >= 1 && h >= 1) {
        /* Use the defaults from the glade file if we
         * don't have good w, h geometry.
         */
        gossip_debug (DEBUG_DOMAIN, "Configuring window default size w:%d, h:%d", w, h);
        gtk_window_set_default_size (GTK_WINDOW (window->window), w, h);
    }

    if (x >= 0 && y >= 0) {
        /* Let the window manager position it if we
         * don't have good x, y coordinates.
         */
        gossip_debug (DEBUG_DOMAIN, "Configuring window default position x:%d, y:%d", x, y);
        gtk_window_move (GTK_WINDOW (window->window), x, y);
    }

    conf = gossip_conf_get ();
    
    /* Show offline ? */
    gossip_conf_get_bool (conf,
                  GOSSIP_PREFS_CONTACTS_SHOW_OFFLINE,
                  &show_offline);
    gossip_conf_notify_add (conf,
                GOSSIP_PREFS_CONTACTS_SHOW_OFFLINE,
                main_window_notify_show_offline_cb,
                show_offline_widget);

    gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (show_offline_widget),
                    show_offline);

    /* Show avatars ? */
    gossip_conf_get_bool (conf,
                  GOSSIP_PREFS_UI_SHOW_AVATARS,
                  &show_avatars);
    gossip_conf_notify_add (conf,
                GOSSIP_PREFS_UI_SHOW_AVATARS,
                (GossipConfNotifyFunc) main_window_notify_show_avatars_cb,
                window);
    gossip_contact_list_set_show_avatars (window->contact_list, show_avatars);

    /* Is compact ? */
    gossip_conf_get_bool (conf,
                  GOSSIP_PREFS_UI_COMPACT_CONTACT_LIST,
                  &compact_contact_list);
    gossip_conf_notify_add (conf,
                GOSSIP_PREFS_UI_COMPACT_CONTACT_LIST,
                (GossipConfNotifyFunc) main_window_notify_compact_contact_list_cb,
                window);
    gossip_contact_list_set_is_compact (window->contact_list, compact_contact_list);

    /* Sort criterium */
    gossip_conf_notify_add (conf,
                GOSSIP_PREFS_CONTACTS_SORT_CRITERIUM,
                (GossipConfNotifyFunc) main_window_notify_sort_criterium_cb,
                window);
    main_window_notify_sort_criterium_cb (conf,
                          GOSSIP_PREFS_CONTACTS_SORT_CRITERIUM,
                          window);

    main_window_update_status (window);

    return window->window;
}

static void
main_window_destroy_cb (GtkWidget         *widget,
            EmpathyMainWindow *window)
{
    /* Save user-defined accelerators. */
    main_window_accels_save ();

    dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (window->mc), "AccountStatusChanged",
                    G_CALLBACK (main_window_status_changed_cb),
                    window);

    if (window->size_timeout_id) {
        g_source_remove (window->size_timeout_id);
    }

    g_list_free (window->widgets_connected);
    g_list_free (window->widgets_disconnected);

    g_object_unref (window->tooltips);
    g_object_unref (window->mc);

    g_free (window);
}

static void
main_window_favorite_chatroom_menu_setup (void)
{
}

static void
main_window_chat_quit_cb (GtkWidget         *widget,
              EmpathyMainWindow *window)
{
    gtk_main_quit ();
}

static void
main_window_chat_new_message_cb (GtkWidget         *widget,
                 EmpathyMainWindow *window)
{
    //gossip_new_message_dialog_show (GTK_WINDOW (window->window));
}

static void
main_window_chat_history_cb (GtkWidget         *widget,
                 EmpathyMainWindow *window)
{
    //gossip_log_window_show (NULL, NULL);
}

static void
main_window_room_join_new_cb (GtkWidget         *widget,
                  EmpathyMainWindow *window)
{
    //gossip_new_chatroom_dialog_show (GTK_WINDOW (window->window));
}

static void
main_window_room_join_favorites_cb (GtkWidget         *widget,
                    EmpathyMainWindow *window)
{
    //gossip_session_chatroom_join_favorites (window->session);
}

static void
main_window_room_manage_favorites_cb (GtkWidget         *widget,
                      EmpathyMainWindow *window)
{
    //gossip_chatrooms_window_show (NULL, FALSE);
}

static void
main_window_chat_add_contact_cb (GtkWidget         *widget,
                 EmpathyMainWindow *window)
{
    //gossip_add_contact_dialog_show (GTK_WINDOW (window->window), NULL);
}

static void
main_window_chat_show_offline_cb (GtkCheckMenuItem  *item,
                  EmpathyMainWindow *window)
{
    gboolean current;

    current = gtk_check_menu_item_get_active (item);

    gossip_conf_set_bool (gossip_conf_get (),
                  GOSSIP_PREFS_CONTACTS_SHOW_OFFLINE,
                  current);

    /* Turn off sound just while we alter the contact list. */
    // FIXME: gossip_sound_set_enabled (FALSE);
    g_object_set (window->contact_list, "show_offline", current, NULL);
    //gossip_sound_set_enabled (TRUE);
}

static gboolean
main_window_edit_button_press_event_cb (GtkWidget         *widget,
                    GdkEventButton    *event,
                    EmpathyMainWindow *window)
{
    GossipContact *contact;
    gchar         *group;

    if (!event->button == 1) {
        return FALSE;
    }

    group = gossip_contact_list_get_selected_group (window->contact_list);
    if (group) {
        GtkMenuItem *item;
        GtkWidget   *label;
        GtkWidget   *submenu;

        item = GTK_MENU_ITEM (window->edit_context);
        label = gtk_bin_get_child (GTK_BIN (item));
        gtk_label_set_text (GTK_LABEL (label), _("Group"));

        gtk_widget_show (window->edit_context);
        gtk_widget_show (window->edit_context_separator);

        submenu = gossip_contact_list_get_group_menu (window->contact_list);
        gtk_menu_item_set_submenu (item, submenu);

        g_free (group);

        return FALSE;
    }

    contact = gossip_contact_list_get_selected (window->contact_list);
    if (contact) {
        GtkMenuItem *item;
        GtkWidget   *label;
        GtkWidget   *submenu;

        item = GTK_MENU_ITEM (window->edit_context);
        label = gtk_bin_get_child (GTK_BIN (item));
        gtk_label_set_text (GTK_LABEL (label), _("Contact"));

        gtk_widget_show (window->edit_context);
        gtk_widget_show (window->edit_context_separator);

        submenu = gossip_contact_list_get_contact_menu (window->contact_list,
                                contact);
        gtk_menu_item_set_submenu (item, submenu);

        g_object_unref (contact);

        return FALSE;
    }

    gtk_widget_hide (window->edit_context);
    gtk_widget_hide (window->edit_context_separator);

    return FALSE;
}

static void
main_window_edit_accounts_cb (GtkWidget         *widget,
                  EmpathyMainWindow *window)
{
    gossip_accounts_dialog_show ();
}

static void
main_window_edit_personal_information_cb (GtkWidget         *widget,
                      EmpathyMainWindow *window)
{
    //gossip_vcard_dialog_show (GTK_WINDOW (window->window));
}

static void
main_window_edit_preferences_cb (GtkWidget         *widget,
                 EmpathyMainWindow *window)
{
    gossip_preferences_show ();
}

static void
main_window_help_about_cb (GtkWidget         *widget,
               EmpathyMainWindow *window)
{
    //gossip_about_dialog_new (GTK_WINDOW (window->window));
}

static void
main_window_help_contents_cb (GtkWidget         *widget,
                  EmpathyMainWindow *window)
{
    //gossip_help_show ();
}

static gboolean
main_window_throbber_button_press_event_cb (GtkWidget      *throbber_ebox,
                        GdkEventButton *event,
                        gpointer        user_data)
{
    if (event->type != GDK_BUTTON_PRESS ||
        event->button != 1) {
        return FALSE;
    }

    gossip_accounts_dialog_show ();

    return FALSE;
}

static void
main_window_status_changed_cb (MissionControl                  *mc,
                   TelepathyConnectionStatus        status,
                   McPresence                       presence,
                   TelepathyConnectionStatusReason  reason,
                   const gchar                     *unique_name,
                   EmpathyMainWindow               *window)
{
    main_window_update_status (window);
}

static void
main_window_update_status (EmpathyMainWindow *window)
{
    GList *accounts, *l;
    guint  connected = 0;
    guint  connecting = 0;
    guint  disconnected = 0;

    /* Count number of connected/connecting/disconnected accounts */
    accounts = mc_accounts_list (); 
    for (l = accounts; l; l = l->next) {
        McAccount *account;
        guint      status;

        account = l->data;

        status = mission_control_get_connection_status (window->mc,
                                account,
                                NULL);

        if (status == 0) {
            connected++;
        } else if (status == 1) {
            connecting++;
        } else if (status == 2) {
            disconnected++;
        }

        g_object_unref (account);
    }
    g_list_free (accounts);

    /* Update the spinner state */
    if (connecting > 0) {
        ephy_spinner_start (EPHY_SPINNER (window->throbber));
    } else {
        ephy_spinner_stop (EPHY_SPINNER (window->throbber));
    }

    /* Update widgets sensibility */
    for (l = window->widgets_connected; l; l = l->next) {
        gtk_widget_set_sensitive (l->data, (connected > 0));
    }

    for (l = window->widgets_disconnected; l; l = l->next) {
        gtk_widget_set_sensitive (l->data, (disconnected > 0));
    }

    //app_favorite_chatroom_menu_update (); 
}

/*
 * Accels
 */
static void
main_window_accels_load (void)
{
    gchar *filename;

    filename = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, ACCELS_FILENAME, NULL);
    if (g_file_test (filename, G_FILE_TEST_EXISTS)) {
        gossip_debug (DEBUG_DOMAIN, "Loading from:'%s'", filename);
        gtk_accel_map_load (filename);
    }

    g_free (filename);
}

static void
main_window_accels_save (void)
{
    gchar *dir;
    gchar *file_with_path;

    dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
    g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
    file_with_path = g_build_filename (dir, ACCELS_FILENAME, NULL);
    g_free (dir);

    gossip_debug (DEBUG_DOMAIN, "Saving to:'%s'", file_with_path);
    gtk_accel_map_save (file_with_path);

    g_free (file_with_path);
}

static void
main_window_connection_items_setup (EmpathyMainWindow *window,
                    GladeXML          *glade)
{
    GList         *list;
    GtkWidget     *w;
    gint           i;
    const gchar *widgets_connected[] = {
        "room",
        "chat_new_message",
        "chat_add_contact",
        "edit_personal_information"
    };
    const gchar *widgets_disconnected[] = {
    };

    for (i = 0, list = NULL; i < G_N_ELEMENTS (widgets_connected); i++) {
        w = glade_xml_get_widget (glade, widgets_connected[i]);
        list = g_list_prepend (list, w);
    }

    window->widgets_connected = list;

    for (i = 0, list = NULL; i < G_N_ELEMENTS (widgets_disconnected); i++) {
        w = glade_xml_get_widget (glade, widgets_disconnected[i]);
        list = g_list_prepend (list, w);
    }

    window->widgets_disconnected = list;
}

static gboolean
main_window_configure_event_timeout_cb (EmpathyMainWindow *window)
{
    gint x, y, w, h;

    gtk_window_get_size (GTK_WINDOW (window->window), &w, &h);
    gtk_window_get_position (GTK_WINDOW (window->window), &x, &y);

    gossip_geometry_save (GEOMETRY_NAME, x, y, w, h);

    window->size_timeout_id = 0;

    return FALSE;
}

static gboolean
main_window_configure_event_cb (GtkWidget         *widget,
                GdkEventConfigure *event,
                EmpathyMainWindow *window)
{
    if (window->size_timeout_id) {
        g_source_remove (window->size_timeout_id);
    }

    window->size_timeout_id = g_timeout_add (500,
                           (GSourceFunc) main_window_configure_event_timeout_cb,
                           window);

    return FALSE;
}

static void
main_window_notify_show_offline_cb (GossipConf  *conf,
                    const gchar *key,
                    gpointer     check_menu_item)
{
    gboolean show_offline;

    if (gossip_conf_get_bool (conf, key, &show_offline)) {
        gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (check_menu_item),
                        show_offline);
    }
}

static void
main_window_notify_show_avatars_cb (GossipConf        *conf,
                    const gchar       *key,
                    EmpathyMainWindow *window)
{
    gboolean show_avatars;

    if (gossip_conf_get_bool (conf, key, &show_avatars)) {
        gossip_contact_list_set_show_avatars (window->contact_list,
                              show_avatars);
    }
}

static void
main_window_notify_compact_contact_list_cb (GossipConf        *conf,
                        const gchar       *key,
                        EmpathyMainWindow *window)
{
    gboolean compact_contact_list;

    if (gossip_conf_get_bool (conf, key, &compact_contact_list)) {
        gossip_contact_list_set_is_compact (window->contact_list,
                            compact_contact_list);
    }
}

static void
main_window_notify_sort_criterium_cb (GossipConf        *conf,
                      const gchar       *key,
                      EmpathyMainWindow *window)
{
    gchar *str = NULL;

    if (gossip_conf_get_string (conf, key, &str)) {
        GType       type;
        GEnumClass *enum_class;
        GEnumValue *enum_value;

        type = gossip_contact_list_sort_get_type ();
        enum_class = G_ENUM_CLASS (g_type_class_peek (type));
        enum_value = g_enum_get_value_by_nick (enum_class, str);

        if (enum_value) {
            gossip_contact_list_set_sort_criterium (window->contact_list, 
                                enum_value->value);
        }
    }
}