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