/* GAIL - The GNOME Accessibility Implementation Library

 * Copyright 2008 Jan Arne Petersen

 *

 * 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 <gtk/gtk.h>

#include "gailscalebutton.h"

#include "gailadjustment.h"

#include "gail-private-macros.h"

#include <string.h>

static void gail_scale_button_class_init (GailScaleButtonClass *klass);

static void gail_scale_button_init       (GailScaleButton      *button);

/* GailWidget */

static void gail_scale_button_notify_gtk (GObject    *obj,

                                          GParamSpec *pspec);

/* AtkObject */

static void gail_scale_button_initialize (AtkObject *obj,

                                          gpointer   data);

/* AtkAction */

static void                  atk_action_interface_init        (AtkActionIface *iface);

static gboolean              gail_scale_button_do_action      (AtkAction      *action,

                                                               gint           i);

static gint                  gail_scale_button_get_n_actions  (AtkAction      *action);

static const gchar*          gail_scale_button_get_description(AtkAction      *action,

                                                               gint           i);

static const gchar*          gail_scale_button_action_get_name(AtkAction      *action,

                                                               gint           i);

static const gchar*          gail_scale_button_get_keybinding (AtkAction      *action,

                                                               gint           i);

static gboolean              gail_scale_button_set_description(AtkAction      *action,

                                                               gint           i,

                                                               const gchar    *desc);

/* AtkValue */

static void	atk_value_interface_init	        (AtkValueIface  *iface);

static void	gail_scale_button_get_current_value     (AtkValue       *obj,

                                                         GValue         *value);

static void	gail_scale_button_get_maximum_value     (AtkValue       *obj,

                                                         GValue         *value);

static void	gail_scale_button_get_minimum_value     (AtkValue       *obj,

                                                         GValue         *value);

static void	gail_scale_button_get_minimum_increment (AtkValue       *obj,

                                                         GValue         *value);

static gboolean	gail_scale_button_set_current_value     (AtkValue       *obj,

                                                         const GValue   *value);

G_DEFINE_TYPE_WITH_CODE (GailScaleButton, gail_scale_button, GAIL_TYPE_BUTTON,

                         G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)

                         G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init));

static void

gail_scale_button_class_init (GailScaleButtonClass *klass)

{

  AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);

  GailWidgetClass *widget_class = GAIL_WIDGET_CLASS (klass);

  atk_object_class->initialize = gail_scale_button_initialize;

  widget_class->notify_gtk = gail_scale_button_notify_gtk;

}

static void

gail_scale_button_init (GailScaleButton *button)

{

}

static void

gail_scale_button_initialize (AtkObject *obj,

                              gpointer   data)

{

  ATK_OBJECT_CLASS (gail_scale_button_parent_class)->initialize (obj, data);

  obj->role = ATK_ROLE_SLIDER;

}

static void

atk_action_interface_init (AtkActionIface *iface)

{

  iface->do_action = gail_scale_button_do_action;

  iface->get_n_actions = gail_scale_button_get_n_actions;

  iface->get_description = gail_scale_button_get_description;

  iface->get_keybinding = gail_scale_button_get_keybinding;

  iface->get_name = gail_scale_button_action_get_name;

  iface->set_description = gail_scale_button_set_description;

}

static gboolean

gail_scale_button_do_action(AtkAction *action,

                            gint       i)

{

  GtkWidget *widget;

  widget = GTK_ACCESSIBLE (action)->widget;

  if (widget == NULL)

    return FALSE;

  if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))

    return FALSE;

  switch (i) {

    case 0:

      g_signal_emit_by_name (widget, "popup");

      return TRUE;

    case 1:

      g_signal_emit_by_name (widget, "podown");

      return TRUE;

    default:

      return FALSE;

  }

}

static gint

gail_scale_button_get_n_actions (AtkAction *action)

{

  return 2;

}

static const gchar*

gail_scale_button_get_description (AtkAction *action,

                                   gint       i)

{

  return NULL;

}

static const gchar*

gail_scale_button_action_get_name (AtkAction *action,

                                   gint       i)

{

  switch (i) {

    case 0:

      return "popup";

    case 1:

      return "popdown";

    default:

      return NULL;

  }

}

static const gchar*

gail_scale_button_get_keybinding (AtkAction *action,

                                  gint       i)

{

  return NULL;

}

static gboolean

gail_scale_button_set_description (AtkAction   *action,

                                   gint         i,

                                   const gchar *desc)

{

  return FALSE;

}

static void

atk_value_interface_init (AtkValueIface *iface)

{

  iface->get_current_value = gail_scale_button_get_current_value;

  iface->get_maximum_value = gail_scale_button_get_maximum_value;

  iface->get_minimum_value = gail_scale_button_get_minimum_value;

  iface->get_minimum_increment = gail_scale_button_get_minimum_increment;

  iface->set_current_value = gail_scale_button_set_current_value;

}

static void

gail_scale_button_get_current_value (AtkValue *obj,

                                     GValue   *value)

{

  GtkScaleButton *gtk_scale_button;

  g_return_if_fail (GAIL_IS_SCALE_BUTTON (obj));

  gtk_scale_button = GTK_SCALE_BUTTON (GTK_ACCESSIBLE (obj)->widget);

  g_value_set_double (g_value_init (value, G_TYPE_DOUBLE),

                      gtk_scale_button_get_value (gtk_scale_button));

}

static void

gail_scale_button_get_maximum_value (AtkValue *obj,

                                     GValue   *value)

{

  GtkWidget *gtk_widget;

  GtkAdjustment *adj;

  g_return_if_fail (GAIL_IS_SCALE_BUTTON (obj));

  gtk_widget = GTK_ACCESSIBLE (obj)->widget;

  if (gtk_widget == NULL)

    return;

  adj = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (gtk_widget));

  if (adj != NULL)

    g_value_set_double (g_value_init (value, G_TYPE_DOUBLE),

                        adj->upper);

}

static void

gail_scale_button_get_minimum_value (AtkValue *obj,

                                     GValue   *value)

{

  GtkWidget *gtk_widget;

  GtkAdjustment *adj;

  g_return_if_fail (GAIL_IS_SCALE_BUTTON (obj));

  gtk_widget = GTK_ACCESSIBLE (obj)->widget;

  if (gtk_widget == NULL)

    return;

  adj = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (gtk_widget));

  if (adj != NULL)

    g_value_set_double (g_value_init (value, G_TYPE_DOUBLE),

                        adj->lower);

}

static void

gail_scale_button_get_minimum_increment (AtkValue *obj,

                                         GValue   *value)

{

  GtkWidget *gtk_widget;

  GtkAdjustment *adj;

  g_return_if_fail (GAIL_IS_SCALE_BUTTON (obj));

  gtk_widget = GTK_ACCESSIBLE (obj)->widget;

  if (gtk_widget == NULL)

    return;

  adj = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (gtk_widget));

  if (adj != NULL)

    g_value_set_double (g_value_init (value, G_TYPE_DOUBLE),

                        adj->step_increment);

}

static gboolean

gail_scale_button_set_current_value (AtkValue     *obj,

                                     const GValue *value)

{

  GtkWidget *gtk_widget;

  g_return_val_if_fail (GAIL_IS_SCALE_BUTTON (obj), FALSE);

  gtk_widget = GTK_ACCESSIBLE (obj)->widget;

  if (gtk_widget == NULL)

    return FALSE;

  if (G_VALUE_HOLDS_DOUBLE (value))

    {

      gtk_scale_button_set_value (GTK_SCALE_BUTTON (gtk_widget), g_value_get_double (value));

      return TRUE;

    }

  return FALSE;

}

static void

gail_scale_button_notify_gtk (GObject    *obj,

                              GParamSpec *pspec)

{

  GtkScaleButton *gtk_scale_button;

  GailScaleButton *scale_button;

  g_return_if_fail (GTK_IS_SCALE_BUTTON (obj));

  gtk_scale_button = GTK_SCALE_BUTTON (obj);

  scale_button = GAIL_SCALE_BUTTON (gtk_widget_get_accessible (GTK_WIDGET (gtk_scale_button)));

  if (strcmp (pspec->name, "value") == 0)

    {

      g_object_notify (G_OBJECT (scale_button), "accessible-value");

    }

  else

    {

      GAIL_WIDGET_CLASS (gail_scale_button_parent_class)->notify_gtk (obj, pspec);

    }

}