From 9c6a0bf23be6b7ec8459c32bef270e44c16e8af7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Alejandro=20Pi=C3=B1eiro?= <apinheiro@igalia.com>
Date: Tue, 23 Aug 2011 17:07:02 +0200
Subject: [PATCH] Using new format to register to window events

Now ATK has AtkWindow, so the format to register to window events
is like any other ATK event

We check if we need to register using the old format, assuming that
if you are able to register to a window event using the old format
is because the ATK implementor is still using the old one. This
check should be temporal.
---
 atk-adaptor/event.c | 48 +++++++++++++++++++++++++++++++++++++++---------
 configure.ac        |  2 +-
 2 files changed, 40 insertions(+), 10 deletions(-)

diff --git a/atk-adaptor/event.c b/atk-adaptor/event.c
index e940e00..6add6e7 100644
--- a/atk-adaptor/event.c
+++ b/atk-adaptor/event.c
@@ -2,6 +2,7 @@
  * AT-SPI - Assistive Technology Service Provider Interface
  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
  *
+ * Copyright 2011, F123 Consulting & Mais Diferenças
  * Copyright 2008, 2009, Codethink Ltd.
  * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
  * Copyright 2001, 2002, 2003 Ximian, Inc.
@@ -1069,13 +1070,17 @@ generic_event_listener (GSignalInvocationHint * signal_hint,
  * and stores the signal id returned so that the function may be
  * de-registered later.
  */
-static void
+static guint
 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
 {
   guint id;
 
   id = atk_add_global_event_listener (listener, signal_name);
-  g_array_append_val (listener_ids, id);
+
+  if (id > 0) /* id == 0 is a failure */
+    g_array_append_val (listener_ids, id);
+
+  return id;
 }
 
 /*
@@ -1092,6 +1097,7 @@ spi_atk_register_event_listeners (void)
    */
   GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
   AtkObject *bo = atk_no_op_object_new (ao);
+  guint id = 0;
 
   g_object_unref (G_OBJECT (bo));
   g_object_unref (ao);
@@ -1109,13 +1115,37 @@ spi_atk_register_event_listeners (void)
 
   add_signal_listener (property_event_listener,
                        "Gtk:AtkObject:property-change");
-  add_signal_listener (window_event_listener, "window:create");
-  add_signal_listener (window_event_listener, "window:destroy");
-  add_signal_listener (window_event_listener, "window:minimize");
-  add_signal_listener (window_event_listener, "window:maximize");
-  add_signal_listener (window_event_listener, "window:restore");
-  add_signal_listener (window_event_listener, "window:activate");
-  add_signal_listener (window_event_listener, "window:deactivate");
+
+  /* window events: we tentative try to register using the old format */
+  id = add_signal_listener (window_event_listener, "window:create");
+
+  if (id != 0)
+    {
+      /* If we are able to register using the old format, we assume
+       * that the ATK implementor is managing window events without
+       * AtkWindow. We can't use the opposite test because after
+       * including AtkWindow on ATK you would be able to register to
+       * that event, although the ATK implementor could or not use it.
+       */
+
+      add_signal_listener (window_event_listener, "window:destroy");
+      add_signal_listener (window_event_listener, "window:minimize");
+      add_signal_listener (window_event_listener, "window:maximize");
+      add_signal_listener (window_event_listener, "window:restore");
+      add_signal_listener (window_event_listener, "window:activate");
+      add_signal_listener (window_event_listener, "window:deactivate");
+    }
+  else
+    {
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
+      add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
+    }
+
   add_signal_listener (document_event_listener,
                        "Gtk:AtkDocument:load-complete");
   add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
diff --git a/configure.ac b/configure.ac
index 3518873..ade7123 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,7 +51,7 @@ PKG_CHECK_MODULES(GMODULE, [gmodule-2.0 >= 2.0.0])
 AC_SUBST(GMODULE_LIBS)
 AC_SUBST(GMODULE_CFLAGS)
 
-PKG_CHECK_MODULES(ATK, [atk >= 2.1.0])
+PKG_CHECK_MODULES(ATK, [atk >= 2.1.5])
 AC_SUBST(ATK_LIBS)
 AC_SUBST(ATK_CFLAGS)
 
-- 
2.7.4