path: root/a11y/widgets/ea-expander.c

/* Evolution Accessibility: ea-expander.c
 *
 * Copyright (C) 2006 Novell, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * Author: Boby Wang <boby.wang@sun.com> Sun Microsystem Inc., 2006
 *
 */

#include <config.h>
#include "ea-expander.h"
#include <gtk/gtkbutton.h>
#include <glib/gi18n.h>

static AtkObjectClass *parent_class;
static GType parent_type;

/* Action IDs */
enum {
    ACTIVATE,
    LAST_ACTION
};

static G_CONST_RETURN gchar*
ea_expander_get_name (AtkObject *a11y)
{
    return _("Toggle Attachment Bar");
}

/* Action interface */
static G_CONST_RETURN gchar *
ea_expander_action_get_name (AtkAction *action, gint i)
{
    switch (i)
    {
        case ACTIVATE:
            return _("activate");
        default:
            return NULL;
    }
}

static gboolean
ea_expander_do_action (AtkAction *action, gint i)
{
    GtkWidget *widget;
    EExpander *expander;

    widget = GTK_ACCESSIBLE (action)->widget;
    if (!widget || !GTK_WIDGET_IS_SENSITIVE (widget) || !GTK_WIDGET_VISIBLE (widget))
        return FALSE;

    expander = E_EXPANDER (widget);

    switch (i)
    {
        case ACTIVATE:
            g_signal_emit_by_name (expander, "activate");
            return TRUE;
        default:
            return FALSE;
    }
}

static gint
ea_expander_get_n_actions (AtkAction *action)
{
    return LAST_ACTION;
}

static void
atk_action_interface_init (AtkActionIface *iface)
{
    g_return_if_fail (iface != NULL);

    iface->do_action = ea_expander_do_action;
    iface->get_n_actions = ea_expander_get_n_actions;
    iface->get_name = ea_expander_action_get_name;
}

static void
ea_expander_class_init (EaExpanderClass *klass)
{
    AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);

    parent_class = g_type_class_ref (parent_type);

    atk_object_class->get_name = ea_expander_get_name;
}

static void
ea_expander_init (EaExpander *a11y)
{
    /* Empty */
}

GType
ea_expander_get_type (void)
{
    static GType type = 0;

    if (!type) {
        AtkObjectFactory *factory;
        GTypeQuery query;

        GTypeInfo info = {
            sizeof (EaExpanderClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) ea_expander_class_init,
            (GClassFinalizeFunc) NULL,
            NULL, /* class data */
            sizeof (EaExpander),
            0,
            (GInstanceInitFunc) ea_expander_init,
            NULL /* value_tree */
        };

        static const GInterfaceInfo atk_action_info = {
            (GInterfaceInitFunc) atk_action_interface_init,
            (GInterfaceFinalizeFunc) NULL,
            NULL
        };
        
        factory = atk_registry_get_factory (atk_get_default_registry (), GTK_TYPE_BIN);
        parent_type = atk_object_factory_get_accessible_type (factory);
        g_type_query (parent_type, &query);

        info.class_size = query.class_size;
        info.instance_size = query.instance_size;

        type = g_type_register_static (parent_type, "EaExpander", &info, 0);
        g_type_add_interface_static (type, ATK_TYPE_ACTION,
                        &atk_action_info);
    }

    return type;
}

AtkObject *
ea_expander_new (GtkWidget *widget)
{
    EaExpander *a11y;

    a11y = g_object_new (ea_expander_get_type (), NULL);

    GTK_ACCESSIBLE (a11y)->widget = GTK_WIDGET (widget);
    ATK_OBJECT (a11y)->role = ATK_ROLE_TOGGLE_BUTTON;

    return ATK_OBJECT (a11y);
}