gtk2/gtk/a11y/gtkbooleancellaccessible.c

/* GAIL - The GNOME Accessibility Enabling Library
 * Copyright 2001 Sun Microsystems Inc.
 *
 * 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 "gtkbooleancellaccessible.h"


static gchar *property_list[] = {
  "active",
  "radio",
  "sensitive",
  NULL
};

G_DEFINE_TYPE (GtkBooleanCellAccessible, _gtk_boolean_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE)


static gboolean
gtk_boolean_cell_accessible_update_cache (GtkRendererCellAccessible *cell,
                                          gboolean                   emit_change_signal)
{
  GtkBooleanCellAccessible *boolean_cell = GTK_BOOLEAN_CELL_ACCESSIBLE (cell);
  gboolean rv = FALSE;
  gboolean active;
  gboolean sensitive;

  g_object_get (G_OBJECT (cell->renderer),
                "active", &active,
                "sensitive", &sensitive,
                NULL);

  if (boolean_cell->cell_value != active)
    {
      rv = TRUE;
      boolean_cell->cell_value = !boolean_cell->cell_value;

      if (active)
        _gtk_cell_accessible_add_state (GTK_CELL_ACCESSIBLE (cell), ATK_STATE_CHECKED, emit_change_signal);
      else
        _gtk_cell_accessible_remove_state (GTK_CELL_ACCESSIBLE (cell), ATK_STATE_CHECKED, emit_change_signal);
    }

  if (boolean_cell->cell_sensitive != sensitive)
    {
      rv = TRUE;
      boolean_cell->cell_sensitive = !boolean_cell->cell_sensitive;

      if (sensitive)
        _gtk_cell_accessible_add_state (GTK_CELL_ACCESSIBLE (cell), ATK_STATE_SENSITIVE, emit_change_signal);
      else
        _gtk_cell_accessible_remove_state (GTK_CELL_ACCESSIBLE (cell), ATK_STATE_SENSITIVE, emit_change_signal);
    }

  return rv;
}

static void
_gtk_boolean_cell_accessible_class_init (GtkBooleanCellAccessibleClass *klass)
{
  GtkRendererCellAccessibleClass *renderer_cell_class = GTK_RENDERER_CELL_ACCESSIBLE_CLASS (klass);

  renderer_cell_class->update_cache = gtk_boolean_cell_accessible_update_cache;
  renderer_cell_class->property_list = property_list;
}

static void
_gtk_boolean_cell_accessible_init (GtkBooleanCellAccessible *cell)
{
}

AtkObject *
_gtk_boolean_cell_accessible_new (void)
{
  GObject *object;
  AtkObject *atk_object;
  GtkRendererCellAccessible *cell;
  GtkBooleanCellAccessible *boolean_cell;

  object = g_object_new (GTK_TYPE_BOOLEAN_CELL_ACCESSIBLE, NULL);

  atk_object = ATK_OBJECT (object);
  atk_object->role = ATK_ROLE_TABLE_CELL;

  cell = GTK_RENDERER_CELL_ACCESSIBLE (object);
  cell->renderer = gtk_cell_renderer_toggle_new ();
  g_object_ref_sink (cell->renderer);

  boolean_cell = GTK_BOOLEAN_CELL_ACCESSIBLE (object);
  boolean_cell->cell_value = FALSE;
  boolean_cell->cell_sensitive = TRUE;

  return atk_object;
}