gtk2/gtk/a11y/gtkexpanderaccessible.c
2012-02-27 17:06:11 +00:00

284 lines
7.6 KiB
C

/* GAIL - The GNOME Accessibility Implementation Library
* Copyright 2003 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "gtkexpanderaccessible.h"
static void atk_action_interface_init (AtkActionIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkExpanderAccessible, _gtk_expander_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init))
static const gchar *
gtk_expander_accessible_get_full_text (GtkExpander *widget)
{
GtkWidget *label_widget;
label_widget = gtk_expander_get_label_widget (widget);
if (!GTK_IS_LABEL (label_widget))
return NULL;
return gtk_label_get_text (GTK_LABEL (label_widget));
}
static const gchar *
gtk_expander_accessible_get_name (AtkObject *obj)
{
GtkWidget *widget;
const gchar *name;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
name = ATK_OBJECT_CLASS (_gtk_expander_accessible_parent_class)->get_name (obj);
if (name != NULL)
return name;
return gtk_expander_accessible_get_full_text (GTK_EXPANDER (widget));
}
static gint
gtk_expander_accessible_get_n_children (AtkObject *obj)
{
GtkWidget *widget;
GList *children;
gint count = 0;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return 0;
children = gtk_container_get_children (GTK_CONTAINER(widget));
count = g_list_length (children);
g_list_free (children);
/* See if there is a label - if there is, reduce our count by 1
* since we don't want the label included with the children.
*/
if (gtk_expander_get_label_widget (GTK_EXPANDER (widget)))
count -= 1;
return count;
}
static AtkObject *
gtk_expander_accessible_ref_child (AtkObject *obj,
gint i)
{
GList *children, *tmp_list;
AtkObject *accessible;
GtkWidget *widget;
GtkWidget *label;
gint index;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
children = gtk_container_get_children (GTK_CONTAINER (widget));
/* See if there is a label - if there is, we need to skip it
* since we don't want the label included with the children.
*/
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (label)
{
for (index = 0; index <= i; index++)
{
tmp_list = g_list_nth (children, index);
if (label == GTK_WIDGET (tmp_list->data))
{
i += 1;
break;
}
}
}
tmp_list = g_list_nth (children, i);
if (!tmp_list)
{
g_list_free (children);
return NULL;
}
accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
g_list_free (children);
g_object_ref (accessible);
return accessible;
}
static void
gtk_expander_accessible_initialize (AtkObject *obj,
gpointer data)
{
ATK_OBJECT_CLASS (_gtk_expander_accessible_parent_class)->initialize (obj, data);
obj->role = ATK_ROLE_TOGGLE_BUTTON;
}
static void
gtk_expander_accessible_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
AtkObject* atk_obj;
GtkExpander *expander;
expander = GTK_EXPANDER (obj);
atk_obj = gtk_widget_get_accessible (GTK_WIDGET (expander));
;
if (g_strcmp0 (pspec->name, "label") == 0)
{
if (atk_obj->name == NULL)
g_object_notify (G_OBJECT (atk_obj), "accessible-name");
g_signal_emit_by_name (atk_obj, "visible-data-changed");
}
else if (g_strcmp0 (pspec->name, "expanded") == 0)
{
atk_object_notify_state_change (atk_obj, ATK_STATE_CHECKED,
gtk_expander_get_expanded (expander));
atk_object_notify_state_change (atk_obj, ATK_STATE_EXPANDED,
gtk_expander_get_expanded (expander));
g_signal_emit_by_name (atk_obj, "visible-data-changed");
}
else
GTK_WIDGET_ACCESSIBLE_CLASS (_gtk_expander_accessible_parent_class)->notify_gtk (obj, pspec);
}
static AtkStateSet *
gtk_expander_accessible_ref_state_set (AtkObject *obj)
{
AtkStateSet *state_set;
GtkWidget *widget;
GtkExpander *expander;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
state_set = ATK_OBJECT_CLASS (_gtk_expander_accessible_parent_class)->ref_state_set (obj);
expander = GTK_EXPANDER (widget);
atk_state_set_add_state (state_set, ATK_STATE_EXPANDABLE);
if (gtk_expander_get_expanded (expander))
{
atk_state_set_add_state (state_set, ATK_STATE_CHECKED);
atk_state_set_add_state (state_set, ATK_STATE_EXPANDED);
}
return state_set;
}
static void
_gtk_expander_accessible_class_init (GtkExpanderAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
widget_class->notify_gtk = gtk_expander_accessible_notify_gtk;
class->get_name = gtk_expander_accessible_get_name;
class->get_n_children = gtk_expander_accessible_get_n_children;
class->ref_child = gtk_expander_accessible_ref_child;
class->ref_state_set = gtk_expander_accessible_ref_state_set;
class->initialize = gtk_expander_accessible_initialize;
}
static void
_gtk_expander_accessible_init (GtkExpanderAccessible *expander)
{
}
static gboolean
gtk_expander_accessible_do_action (AtkAction *action,
gint i)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
if (widget == NULL)
return FALSE;
if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
if (i != 0)
return FALSE;
gtk_widget_activate (widget);
return TRUE;
}
static gint
gtk_expander_accessible_get_n_actions (AtkAction *action)
{
return 1;
}
static const gchar *
gtk_expander_accessible_get_keybinding (AtkAction *action,
gint i)
{
gchar *return_value = NULL;
GtkWidget *widget;
GtkWidget *label;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
if (widget == NULL)
return NULL;
if (i != 0)
return NULL;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (GTK_IS_LABEL (label))
{
guint key_val;
key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
if (key_val != GDK_KEY_VoidSymbol)
return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
}
return return_value;
}
static const gchar *
gtk_expander_accessible_action_get_name (AtkAction *action,
gint i)
{
if (i != 0)
return NULL;
return "activate";
}
static void
atk_action_interface_init (AtkActionIface *iface)
{
iface->do_action = gtk_expander_accessible_do_action;
iface->get_n_actions = gtk_expander_accessible_get_n_actions;
iface->get_keybinding = gtk_expander_accessible_get_keybinding;
iface->get_name = gtk_expander_accessible_action_get_name;
}