[gtk] a11y: Stop using ::event

[Matthias Clasen <matthiasc src gnome org>]

commit d561e52cde80d657b92e7ae5dc979805f08f8e9f
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 25 18:25:29 2018 -0400

    a11y: Stop using ::event
    
    We can just as well use notify::has-focus for the purpose of
    focus tracking, and we can at the same time avoid emitting the
    deprecated AtkObject::focus-event signal.

 gtk/a11y/gtkwidgetaccessible.c | 42 ++++--------------------------------------
 1 file changed, 4 insertions(+), 38 deletions(-)
---
diff --git a/gtk/a11y/gtkwidgetaccessible.c b/gtk/a11y/gtkwidgetaccessible.c
index 2a32fe6bf6..437c1212b1 100644
--- a/gtk/a11y/gtkwidgetaccessible.c
+++ b/gtk/a11y/gtkwidgetaccessible.c
@@ -43,25 +43,6 @@ G_DEFINE_TYPE_WITH_CODE (GtkWidgetAccessible, gtk_widget_accessible, GTK_TYPE_AC
                          G_ADD_PRIVATE (GtkWidgetAccessible)
                          G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init))
 
-/* Translate GtkWidget::focus-in/out-event to AtkObject::focus-event */
-static gboolean
-focus_cb (GtkWidget *widget,
-          GdkEvent  *event)
-{
-  if (gdk_event_get_event_type (event) == GDK_FOCUS_CHANGE)
-    {
-      AtkObject *obj;
-      gboolean in;
-
-      obj = gtk_widget_get_accessible (widget);
-
-      gdk_event_get_focus_in (event, &in);
-      g_signal_emit_by_name (obj, "focus-event", in);
-    }
-
-  return GDK_EVENT_PROPAGATE;
-}
-
 /* Translate GtkWidget property change notification to the notify_gtk vfunc */
 static void
 notify_cb (GObject    *obj,
@@ -107,18 +88,6 @@ map_cb (GtkWidget *widget)
   return 1;
 }
 
-static void
-gtk_widget_accessible_focus_event (AtkObject *obj,
-                                   gboolean   focus_in)
-{
-  AtkObject *focus_obj;
-
-  focus_obj = g_object_get_data (G_OBJECT (obj), "gail-focus-object");
-  if (focus_obj == NULL)
-    focus_obj = obj;
-  atk_object_notify_state_change (focus_obj, ATK_STATE_FOCUSED, focus_in);
-}
-
 static void
 gtk_widget_accessible_update_tooltip (GtkWidgetAccessible *accessible,
                                       GtkWidget *widget)
@@ -137,7 +106,6 @@ gtk_widget_accessible_initialize (AtkObject *obj,
 
   widget = GTK_WIDGET (data);
 
-  g_signal_connect_after (widget, "event", G_CALLBACK (focus_cb), NULL);
   g_signal_connect (widget, "notify", G_CALLBACK (notify_cb), NULL);
   g_signal_connect (widget, "size-allocate", G_CALLBACK (size_allocate_cb), NULL);
   g_signal_connect (widget, "map", G_CALLBACK (map_cb), NULL);
@@ -466,11 +434,10 @@ gtk_widget_accessible_notify_gtk (GObject    *obj,
   gboolean value;
 
   if (g_strcmp0 (pspec->name, "has-focus") == 0)
-    /*
-     * We use focus change events to catch
-     * focus changes so we ignore this.
-     */
-    return;
+    {
+      state = ATK_STATE_FOCUSED;
+      value = gtk_widget_has_focus (widget);
+    }
   else if (g_strcmp0 (pspec->name, "tooltip-text") == 0)
     {
       gtk_widget_accessible_update_tooltip (GTK_WIDGET_ACCESSIBLE (atk_obj),
@@ -545,7 +512,6 @@ gtk_widget_accessible_class_init (GtkWidgetAccessibleClass *klass)
   class->get_index_in_parent = gtk_widget_accessible_get_index_in_parent;
   class->initialize = gtk_widget_accessible_initialize;
   class->get_attributes = gtk_widget_accessible_get_attributes;
-  class->focus_event = gtk_widget_accessible_focus_event;
 }
 
 static void