/*  Glimmer - glimmer-settings.c
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Library 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library 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.
 */

#include "gnome-settings.h"

static void gnome_settings_class_init (GnomeSettingsClass * _class);
static void gnome_settings_init (GnomeSettings * settings);
GtkWidget *gnome_settings_new (void);
static void gnome_settings_destroy (GtkObject * object);
static void select_event (GtkCTree * tree, gint row, gint col, GdkEvent * event,
                          GnomeSettings * settings);
static void unselect_event (GtkCTree * tree, gint row, gint col,
                            GdkEvent * event, GnomeSettings * settings);

static GtkHPanedClass *parent_class = NULL;

GtkType
gnome_settings_get_type (void)
{
    static GtkType settings_type = 0;

    if (!settings_type) {
        static const GtkTypeInfo settings_info = {
            "GnomeSettings",
            sizeof (GnomeSettings),
            sizeof (GnomeSettingsClass),
            (GtkClassInitFunc) gnome_settings_class_init,
            (GtkObjectInitFunc) gnome_settings_init,
            NULL,
            NULL,
            (GtkClassInitFunc) NULL,
        };

        settings_type =
            gtk_type_unique (gtk_hpaned_get_type (), &settings_info);
    }
    return (settings_type);
}

static void
gnome_settings_class_init (GnomeSettingsClass * _class)
{
    GtkObjectClass *object_class;

    object_class = (GtkObjectClass *) _class;
    parent_class = gtk_type_class (gtk_hpaned_get_type ());
    object_class->destroy = gnome_settings_destroy;
}

static void
gnome_settings_init (GnomeSettings * settings)
{
    settings->current = NULL;
    settings->children = NULL;
    settings->selected_row = -1;
}

GtkWidget *
gnome_settings_new ()
{
    GnomeSettings *settings;
    GtkWidget *scrolled_window;

    settings = gtk_type_new (GNOME_TYPE_SETTINGS);
    scrolled_window = gtk_scrolled_window_new (0, 0);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_widget_set_usize (scrolled_window, 180, 380);
    gtk_widget_show (scrolled_window);

    settings->ctree = gtk_ctree_new (1, 0);
    gtk_clist_set_selection_mode (GTK_CLIST (settings->ctree),
                                  GTK_SELECTION_SINGLE);
    gtk_clist_set_shadow_type (GTK_CLIST (settings->ctree),
                               GTK_SHADOW_ETCHED_IN);
    gtk_clist_set_column_justification (GTK_CLIST (settings->ctree), 0,
                                        GTK_JUSTIFY_LEFT);
    gtk_clist_set_row_height (GTK_CLIST (settings->ctree), 24);
    gtk_container_add (GTK_CONTAINER (scrolled_window), settings->ctree);
    gtk_signal_connect (GTK_OBJECT (settings->ctree), "select_row",
                        GTK_SIGNAL_FUNC (select_event), settings);
    gtk_signal_connect (GTK_OBJECT (settings->ctree), "unselect_row",
                        GTK_SIGNAL_FUNC (unselect_event), settings);
    gtk_paned_add1 (GTK_PANED (settings), scrolled_window);
    gtk_widget_show (settings->ctree);

    scrolled_window = gtk_scrolled_window_new (0, 0);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_widget_set_usize (scrolled_window, 350, 380);
    gtk_widget_show (scrolled_window);

    settings->hbox = gtk_hbox_new (FALSE, 0);
    gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW
                                           (scrolled_window), settings->hbox);
    gtk_widget_show (settings->hbox);
    gtk_paned_add2 (GTK_PANED (settings), scrolled_window);
    return (GTK_WIDGET (settings));
}

static void
gnome_settings_destroy (GtkObject * object)
{
    GtkWidget *settings;

    g_return_if_fail (object != NULL);
    g_return_if_fail (GNOME_IS_SETTINGS (object));
    settings = GTK_WIDGET (object);
    g_list_free (GNOME_SETTINGS (settings)->children);
    gtk_widget_destroy (settings);
}

static void
select_event (GtkCTree * tree, gint row, gint col, GdkEvent * event,
              GnomeSettings * settings)
{
    GtkCTreeNode *node;
    gpointer data;

    settings->selected_row = row;
    node = gtk_ctree_node_nth (tree, row);
    data = gtk_ctree_node_get_row_data (GTK_CTREE (settings->ctree), node);
    if (settings->current && data)
        gtk_widget_hide (settings->current);
    if (data) {
        gtk_widget_show (GTK_WIDGET (data));
        settings->current = GTK_WIDGET (data);
    }
}

static void
unselect_event (GtkCTree * tree, gint row, gint col, GdkEvent * event,
                GnomeSettings * settings)
{
    settings->selected_row = -1;
    if (settings->current)
        gtk_widget_hide (settings->current);
    settings->current = NULL;
}

GtkCTreeNode *
gnome_settings_add_page (GnomeSettings * settings, GtkCTreeNode * parent,
                         gchar * title, GnomePixmap * pixmap,
                         GtkWidget * new_child)
{
    GtkCTreeNode *node;

    if (pixmap)
        node =
            gtk_ctree_insert_node (GTK_CTREE (settings->ctree), parent, NULL,
                                   &title, 8, pixmap->pixmap, pixmap->mask,
                                   pixmap->pixmap, pixmap->mask, FALSE, TRUE);
    else
        node =
            gtk_ctree_insert_node (GTK_CTREE (settings->ctree), parent, NULL,
                                   &title, 8, NULL, NULL, NULL, NULL, FALSE,
                                   TRUE);
    if (new_child) {
        gtk_ctree_node_set_row_data (GTK_CTREE (settings->ctree), node,
                                     (gpointer) new_child);
        gtk_widget_hide (new_child);
        gtk_box_pack_start (GTK_BOX (settings->hbox), new_child, TRUE, TRUE, 0);
        settings->children =
            g_list_append (settings->children, (gpointer) new_child);
    } else
        gtk_ctree_node_set_selectable (GTK_CTREE (settings->ctree), node,
                                       FALSE);
    return (node);
}