gtk/modules/other/gail/tests/teststatusbar.c

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#include <string.h>
#include <glib-object.h>
#include <atk/atk.h>
/*
* To use this test module, run the test program testgtk and click on
* statusbar
*/
static void _check_statusbar (AtkObject *obj);
static AtkObject* _find_object (AtkObject* obj, AtkRole role);
static void _notify_handler (GObject *obj, GParamSpec *pspec);
static void _property_change_handler (AtkObject *obj,
AtkPropertyValues *values);
static AtkObject*
_find_object (AtkObject *obj,
AtkRole role)
{
/*
* Find the first object which is a descendant of the specified object
* which matches the specified role.
*
* This function returns a reference to the AtkObject which should be
* removed when finished with the object.
*/
gint i;
gint n_children;
AtkObject *child;
n_children = atk_object_get_n_accessible_children (obj);
for (i = 0; i < n_children; i++)
{
AtkObject* found_obj;
child = atk_object_ref_accessible_child (obj, i);
if (atk_object_get_role (child) == role)
{
return child;
}
found_obj = _find_object (child, role);
g_object_unref (child);
if (found_obj)
{
return found_obj;
}
}
return NULL;
}
static void _property_change_handler (AtkObject *obj,
AtkPropertyValues *values)
{
G_CONST_RETURN gchar *type_name = g_type_name (G_TYPE_FROM_INSTANCE (obj));
G_CONST_RETURN gchar *name = atk_object_get_name (obj);
g_print ("_property_change_handler: Accessible Type: %s\n",
type_name ? type_name : "NULL");
g_print ("_property_change_handler: Accessible name: %s\n",
name ? name : "NULL");
g_print ("_property_change_handler: PropertyName: %s\n",
values->property_name ? values->property_name: "NULL");
if (G_VALUE_HOLDS_STRING (&values->new_value))
g_print ("_property_change_handler: PropertyValue: %s\n",
g_value_get_string (&values->new_value));
}
static void _check_statusbar (AtkObject *obj)
{
AtkRole role;
AtkObject *statusbar, *label;
role = atk_object_get_role (obj);
if (role != ATK_ROLE_FRAME)
return;
statusbar = _find_object (obj, ATK_ROLE_STATUSBAR);
if (!statusbar)
return;
g_print ("_check_statusbar\n");
label = atk_object_ref_accessible_child (statusbar, 0);
g_return_if_fail (label == NULL);
/*
* We get notified of changes to the label
*/
g_signal_connect_closure_by_id (statusbar,
g_signal_lookup ("notify",
G_OBJECT_TYPE (statusbar)),
0,
g_cclosure_new (G_CALLBACK (_notify_handler),
NULL, NULL),
FALSE);
atk_object_connect_property_change_handler (statusbar,
(AtkPropertyChangeHandler*) _property_change_handler);
}
static void
_notify_handler (GObject *obj, GParamSpec *pspec)
{
AtkObject *atk_obj = ATK_OBJECT (obj);
G_CONST_RETURN gchar *name;
g_print ("_notify_handler: property: %s\n", pspec->name);
if (strcmp (pspec->name, "accessible-name") == 0)
{
name = atk_object_get_name (atk_obj);
g_print ("_notify_handler: value: |%s|\n", name ? name : "<NULL>");
}
}
static void
_create_event_watcher (void)
{
atk_add_focus_tracker (_check_statusbar);
}
int
gtk_module_init(gint argc, char* argv[])
{
g_print("teststatusbar Module loaded\n");
_create_event_watcher();
return 0;
}