Remove ATK

To build a better world sometimes means having to tear the old one down.
        -- Alexander Pierce, "Captain America: The Winter Soldier"

ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:

 - it maps to a very specific implementation, AT-SPI, which is Linux and
   Unix specific
 - it requires implementing the same functionality in three different
   layers of the stack: AT-SPI, ATK, and GTK
 - only GTK uses it; every other Linux and Unix toolkit and application
   talks to AT-SPI directly, including assistive technologies

Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:

 - add an "accessible" interface, implemented by GTK objects directly,
   which describe the accessible role and state changes for every UI
   element
 - add an "assistive technology context" to proxy a native accessibility
   API, and assign it to every widget
 - implement the AT context depending on the platform

For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833

1 files changed, 0 insertions, 59 deletions

diff --git a/gtk/a11y/gtktoplevelaccessible.h b/gtk/a11y/gtktoplevelaccessible.h
deleted file mode 100644
index 9c782b8a75..0000000000
--- a/gtk/a11y/gtktoplevelaccessible.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* GTK+ - accessibility implementations
- * Copyright 2001 Sun Microsystems Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __GTK_TOPLEVEL_ACCESSIBLE_H__
-#define __GTK_TOPLEVEL_ACCESSIBLE_H__
-
-#if !defined (__GTK_A11Y_H_INSIDE__) && !defined (GTK_COMPILATION)
-#error "Only <gtk/gtk-a11y.h> can be included directly."
-#endif
-
-#include <atk/atk.h>
-
-G_BEGIN_DECLS
-
-#define GTK_TYPE_TOPLEVEL_ACCESSIBLE               (gtk_toplevel_accessible_get_type ())
-#define GTK_TOPLEVEL_ACCESSIBLE(obj)               (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TOPLEVEL_ACCESSIBLE, GtkToplevelAccessible))
-#define GTK_TOPLEVEL_ACCESSIBLE_CLASS(klass)       (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TOPLEVEL_ACCESSIBLE, GtkToplevelAccessibleClass))
-#define GTK_IS_TOPLEVEL_ACCESSIBLE(obj)            (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TOPLEVEL_ACCESSIBLE))
-#define GTK_IS_TOPLEVEL_ACCESSIBLE_CLASS(klass)    (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TOPLEVEL_ACCESSIBLE))
-#define GTK_TOPLEVEL_ACCESSIBLE_GET_CLASS(obj)     (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TOPLEVEL_ACCESSIBLE, GtkToplevelAccessibleClass))
-
-typedef struct _GtkToplevelAccessible        GtkToplevelAccessible;
-typedef struct _GtkToplevelAccessibleClass   GtkToplevelAccessibleClass;
-typedef struct _GtkToplevelAccessiblePrivate GtkToplevelAccessiblePrivate;
-
-struct _GtkToplevelAccessible
-{
-  AtkObject parent;
-
-  GtkToplevelAccessiblePrivate *priv;
-};
-
-struct _GtkToplevelAccessibleClass
-{
-  AtkObjectClass parent_class;
-};
-
-GDK_AVAILABLE_IN_ALL
-GType  gtk_toplevel_accessible_get_type     (void);
-GDK_AVAILABLE_IN_ALL
-GList *gtk_toplevel_accessible_get_children (GtkToplevelAccessible *accessible);
-
-G_END_DECLS
-
-#endif /* __GTK_TOPLEVEL_ACCESSIBLE_H__ */