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API: Add gtk_widget_class_set_accessible_type()

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The function is supposed to bypass the ATK registry. For 2 reasons:
1) We get rid of a lot of boilerplate madness.
2) The registry allows creating multiple accessibles per widget and we
   don't.

The old code for registries is still there.
This commit is contained in:
Benjamin Otte 2011-06-18 09:51:18 +02:00 committed by Matthias Clasen
parent 9ebcd66d43
commit ebf8bf0000
4 changed files with 51 additions and 7 deletions
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1
docs/reference/gtk/gtk3-sections.txt
View File

@ -5050,6 +5050,7 @@ gtk_widget_style_get
gtk_widget_style_get_property
gtk_widget_style_get_valist
gtk_widget_style_attach
gtk_widget_class_set_accessible_type
gtk_widget_get_accessible
gtk_widget_child_focus
gtk_widget_child_notify

1
gtk/gtk.symbols
View File

@ -3462,6 +3462,7 @@ gtk_widget_class_install_style_property
gtk_widget_class_install_style_property_parser
gtk_widget_class_list_style_properties
gtk_widget_class_path
gtk_widget_class_set_accessible_type
gtk_widget_compute_expand
gtk_widget_create_pango_context
gtk_widget_create_pango_layout

54
gtk/gtkwidget.c
View File

@ -408,7 +408,7 @@ struct _GtkWidgetPrivate
struct _GtkWidgetClassPrivate
{
int dummy;
GType accessible_type;
};
enum {
@ -938,6 +938,7 @@ gtk_widget_class_init (GtkWidgetClass *klass)
klass->show_help = gtk_widget_real_show_help;
/* Accessibility support */
klass->priv->accessible_type = GTK_TYPE_ACCESSIBLE;
klass->get_accessible = gtk_widget_real_get_accessible;
klass->adjust_size_request = gtk_widget_real_adjust_size_request;
@ -11916,6 +11917,33 @@ G_DEFINE_BOXED_TYPE (GtkRequisition, gtk_requisition,
gtk_requisition_copy,
gtk_requisition_free)
/**
* gtk_widget_class_set_accessible_type:
* @widget_class: class to set the accessible type for
* @type: The object type that implements the accessible for @widget_class
*
* Sets the type to be used for creating accessibles for widgets of
* @widget_class. The given @type must be a subtype of the type used for
* accessibles of the parent class.
*
* This function should only be called from class init functions of widgets.
*
* Since: 3.2
**/
void
gtk_widget_class_set_accessible_type (GtkWidgetClass *widget_class,
GType type)
{
GtkWidgetClassPrivate *priv;
g_return_if_fail (GTK_IS_WIDGET_CLASS (widget_class));
g_return_if_fail (g_type_is_a (type, widget_class->priv->accessible_type));
priv = widget_class->priv;
priv->accessible_type = type;
}
/**
* gtk_widget_get_accessible:
* @widget: a #GtkWidget
@ -11959,15 +11987,27 @@ gtk_widget_real_get_accessible (GtkWidget *widget)
quark_accessible_object);
if (!accessible)
{
GtkWidgetClass *widget_class;
AtkObjectFactory *factory;
AtkRegistry *default_registry;
default_registry = atk_get_default_registry ();
factory = atk_registry_get_factory (default_registry,
G_TYPE_FROM_INSTANCE (widget));
accessible =
atk_object_factory_create_accessible (factory,
G_OBJECT (widget));
widget_class = GTK_WIDGET_GET_CLASS (widget);
if (widget_class->priv->accessible_type == GTK_TYPE_ACCESSIBLE)
{
default_registry = atk_get_default_registry ();
factory = atk_registry_get_factory (default_registry,
G_TYPE_FROM_INSTANCE (widget));
accessible =
atk_object_factory_create_accessible (factory,
G_OBJECT (widget));
}
else
{
accessible = g_object_new (widget_class->priv->accessible_type, NULL);
atk_object_initialize (accessible, widget);
}
g_object_set_qdata (G_OBJECT (widget),
quark_accessible_object,
accessible);

2
gtk/gtkwidget.h
View File

@ -722,6 +722,8 @@ void gtk_widget_set_support_multidevice (GtkWidget *widget,
gboolean support_multidevice);
/* Accessibility support */
void gtk_widget_class_set_accessible_type (GtkWidgetClass *widget_class,
GType type);
AtkObject* gtk_widget_get_accessible (GtkWidget *widget);