/* $Id$ */
/*-
 * Copyright (c) 2003-2005 Benedikt Meurer <benny@xfce.org>.
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <exo-helper/exo-helper-chooser.h>
#include <exo-helper/exo-helper-enum-types.h>
#include <exo-helper/exo-helper-launcher-dialog.h>



/* Property identifiers */
enum
{
  PROP_0,
  PROP_CATEGORY,
};



static void exo_helper_launcher_dialog_class_init       (ExoHelperLauncherDialogClass *klass);
static void exo_helper_launcher_dialog_init             (ExoHelperLauncherDialog      *launcher_dialog);
static void exo_helper_launcher_dialog_get_property     (GObject                      *object,
                                                         guint                         prop_id,
                                                         GValue                       *value,
                                                         GParamSpec                   *pspec);
static void exo_helper_launcher_dialog_set_property     (GObject                      *object,
                                                         guint                         prop_id,
                                                         const GValue                 *value,
                                                         GParamSpec                   *pspec);
static void exo_helper_launcher_dialog_notify_is_valid  (ExoHelperChooser             *chooser,
                                                         GParamSpec                   *pspec,
                                                         ExoHelperLauncherDialog      *launcher_dialog);



struct _ExoHelperLauncherDialogClass
{
  GtkDialogClass __parent__;
};

struct _ExoHelperLauncherDialog
{
  GtkDialog         __parent__;
  GtkWidget        *label;
  ExoHelperCategory category;
};



GType
exo_helper_launcher_dialog_get_type (void)
{
  static GType type = G_TYPE_INVALID;

  if (G_UNLIKELY (type == G_TYPE_INVALID))
    {
      static const GTypeInfo info =
      {
        sizeof (ExoHelperLauncherDialogClass),
        NULL,
        NULL,
        (GClassInitFunc) exo_helper_launcher_dialog_class_init,
        NULL,
        NULL,
        sizeof (ExoHelperLauncherDialog),
        0,
        (GInstanceInitFunc) exo_helper_launcher_dialog_init,
        NULL,
      };

      type = g_type_register_static (GTK_TYPE_DIALOG, I_("ExoHelperLauncherDialog"), &info, 0);
    }

  return type;
}



static void
exo_helper_launcher_dialog_class_init (ExoHelperLauncherDialogClass *klass)
{
  GObjectClass *gobject_class;

  gobject_class = G_OBJECT_CLASS (klass);
  gobject_class->get_property = exo_helper_launcher_dialog_get_property;
  gobject_class->set_property = exo_helper_launcher_dialog_set_property;

  /**
   * ExoHelperLauncherDialog:category:
   *
   * The #ExoHelperCategory for which a launcher dialog will
   * be displayed.
   **/
  g_object_class_install_property (gobject_class,
                                   PROP_CATEGORY,
                                   g_param_spec_enum ("category",
                                                      "Category",
                                                      "Category",
                                                      EXO_TYPE_HELPER_CATEGORY,
                                                      EXO_HELPER_WEBBROWSER,
                                                      EXO_PARAM_READWRITE | G_PARAM_CONSTRUCT));
}



static void
exo_helper_launcher_dialog_init (ExoHelperLauncherDialog *launcher_dialog)
{
  AtkRelationSet *relations;
  AtkRelation    *relation;
  AtkObject      *object;
  GtkWidget      *chooser;
  GtkWidget      *image;
  GtkWidget      *hbox;
  GtkWidget      *vbox;

  gtk_dialog_add_button (GTK_DIALOG (launcher_dialog), GTK_STOCK_HELP, GTK_RESPONSE_HELP);
  gtk_dialog_add_button (GTK_DIALOG (launcher_dialog), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
  gtk_dialog_add_button (GTK_DIALOG (launcher_dialog), GTK_STOCK_OK, GTK_RESPONSE_OK);
  gtk_dialog_set_default_response (GTK_DIALOG (launcher_dialog), GTK_RESPONSE_OK);
  gtk_dialog_set_has_separator (GTK_DIALOG (launcher_dialog), FALSE);
  gtk_window_set_resizable (GTK_WINDOW (launcher_dialog), FALSE);
  gtk_window_set_title (GTK_WINDOW (launcher_dialog), _("Choose Preferred Application"));

  hbox = gtk_hbox_new (FALSE, 12);
  gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (launcher_dialog)->vbox), hbox, TRUE, TRUE, 0);
  gtk_widget_show (hbox);

  image = gtk_image_new_from_icon_name ("preferences-desktop-default-applications", GTK_ICON_SIZE_DIALOG);
  gtk_misc_set_alignment (GTK_MISC (image), 0.5f, 0.0f);
  gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
  gtk_widget_show (image);

  vbox = gtk_vbox_new (FALSE, 12);
  gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
  gtk_widget_show (vbox);

  launcher_dialog->label = gtk_label_new ("");
  gtk_box_pack_start (GTK_BOX (vbox), launcher_dialog->label, FALSE, FALSE, 0);
  gtk_widget_show (launcher_dialog->label);

  chooser = g_object_new (EXO_TYPE_HELPER_CHOOSER, NULL);
  g_signal_connect (G_OBJECT (chooser), "notify::is-valid", G_CALLBACK (exo_helper_launcher_dialog_notify_is_valid), launcher_dialog);
  exo_binding_new (G_OBJECT (launcher_dialog), "category", G_OBJECT (chooser), "category");
  gtk_box_pack_start (GTK_BOX (vbox), chooser, FALSE, FALSE, 0);
  gtk_widget_show (chooser);

  /* set Atk label relation for the chooser */
  object = gtk_widget_get_accessible (chooser);
  relations = atk_object_ref_relation_set (gtk_widget_get_accessible (launcher_dialog->label));
  relation = atk_relation_new (&object, 1, ATK_RELATION_LABEL_FOR);
  atk_relation_set_add (relations, relation);
  g_object_unref (G_OBJECT (relation));
}



static void
exo_helper_launcher_dialog_get_property (GObject    *object,
                                         guint       prop_id,
                                         GValue     *value,
                                         GParamSpec *pspec)
{
  ExoHelperLauncherDialog *launcher_dialog = EXO_HELPER_LAUNCHER_DIALOG (object);

  switch (prop_id)
    {
    case PROP_CATEGORY:
      g_value_set_enum (value, exo_helper_launcher_dialog_get_category (launcher_dialog));
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}



static void
exo_helper_launcher_dialog_set_property (GObject      *object,
                                         guint         prop_id,
                                         const GValue *value,
                                         GParamSpec   *pspec)
{
  ExoHelperLauncherDialog *launcher_dialog = EXO_HELPER_LAUNCHER_DIALOG (object);

  switch (prop_id)
    {
    case PROP_CATEGORY:
      exo_helper_launcher_dialog_set_category (launcher_dialog, g_value_get_enum (value));
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}



static void
exo_helper_launcher_dialog_notify_is_valid (ExoHelperChooser        *chooser,
                                            GParamSpec              *pspec,
                                            ExoHelperLauncherDialog *launcher_dialog)
{
  g_return_if_fail (EXO_IS_HELPER_CHOOSER (chooser));
  g_return_if_fail (EXO_IS_HELPER_LAUNCHER_DIALOG (launcher_dialog));

  gtk_dialog_set_response_sensitive (GTK_DIALOG (launcher_dialog), GTK_RESPONSE_OK,
                                     exo_helper_chooser_get_is_valid (chooser));
}



/**
 * exo_helper_launcher_dialog_new:
 * @category : an #ExoHelperCategory.
 *
 * Allocates a new #ExoHelperLauncherDialog for the
 * specified @category.
 *
 * Return value: the newly allocated #ExoHelperLauncherDialog.
 **/
GtkWidget*
exo_helper_launcher_dialog_new (ExoHelperCategory category)
{
  g_return_val_if_fail (category >= 0 && category < EXO_HELPER_N_CATEGORIES, NULL);
  return g_object_new (EXO_TYPE_HELPER_LAUNCHER_DIALOG, "category", category, NULL);
}



/**
 * exo_helper_launcher_dialog_get_category:
 * @launcher_dialog : an #ExoHelperLauncherDialog.
 *
 * Returns the #ExoHelperCategory for @launcher_dialog.
 *
 * Return value: the #ExoHelperCategory for @launcher_dialog.
 **/
ExoHelperCategory
exo_helper_launcher_dialog_get_category (const ExoHelperLauncherDialog *launcher_dialog)
{
  g_return_val_if_fail (EXO_IS_HELPER_LAUNCHER_DIALOG (launcher_dialog), EXO_HELPER_WEBBROWSER);
  return launcher_dialog->category;
}



/**
 * exo_helper_launcher_dialog_set_category:
 * @launcher_dialog : an #ExoHelperLauncherDialog.
 * @category        : an #ExoHelperCategory.
 *
 * Sets the #ExoHelperCategory for @launcher_dialog to
 * @category.
 **/
void
exo_helper_launcher_dialog_set_category (ExoHelperLauncherDialog *launcher_dialog,
                                         ExoHelperCategory        category)
{
  static const gchar *MESSAGES[] =
  {
    N_("Please choose your preferred Web\n"
       "Browser now and click OK to proceed."),
    N_("Please choose your preferred Mail Reader\n"
       "now and click OK to proceed."),
    N_("Please choose your preferred Terminal\n"
       "Emulator now and click OK to proceed."),
  };

  /* sanity check the categories */
  g_assert (EXO_HELPER_N_CATEGORIES == G_N_ELEMENTS (MESSAGES));

  g_return_if_fail (EXO_IS_HELPER_LAUNCHER_DIALOG (launcher_dialog));
  g_return_if_fail (category >= 0 && category < EXO_HELPER_N_CATEGORIES);

  /* setup the new label text */
  gtk_label_set_text (GTK_LABEL (launcher_dialog->label), MESSAGES[category]);

  /* apply the new category */
  launcher_dialog->category = category;
  g_object_notify (G_OBJECT (launcher_dialog), "category");
}


