[gtk+] GtkLabelAccessible: update state of links

[Matthias Clasen <matthiasc src gnome org>]

commit b85a8001e0806bf83a641c901447d6da2e2abf52
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jan 4 09:43:23 2014 -0500

    GtkLabelAccessible: update state of links
    
    This commit makes the LinkImpl children of label accessibles
    inherit all their state, except for focused and visited, which
    are handled directly.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=721406

 gtk/a11y/gtklabelaccessible.c        |   61 +++++++++++++++++++++++++++++++++-
 gtk/a11y/gtklabelaccessibleprivate.h |    1 +
 gtk/gtklabel.c                       |    5 +++
 3 files changed, 66 insertions(+), 1 deletions(-)
---
diff --git a/gtk/a11y/gtklabelaccessible.c b/gtk/a11y/gtklabelaccessible.c
index 58cbc8d..fdcd74c 100644
--- a/gtk/a11y/gtklabelaccessible.c
+++ b/gtk/a11y/gtklabelaccessible.c
@@ -41,6 +41,7 @@ struct _GtkLabelAccessibleLink
   
   GtkLabelAccessible *label;
   gint index;
+  gboolean focused;
 };
 
 struct _GtkLabelAccessibleLinkClass
@@ -109,13 +110,42 @@ gtk_label_accessible_link_impl_get_hyperlink (AtkHyperlinkImpl *atk_impl)
   return g_object_ref (impl->link);
 }
 
-
 static void
 atk_hyperlink_impl_interface_init (AtkHyperlinkImplIface *iface)
 {
   iface->get_hyperlink = gtk_label_accessible_link_impl_get_hyperlink;
 }
 
+static AtkStateSet *
+gtk_label_accessible_link_impl_ref_state_set (AtkObject *obj)
+{
+  AtkStateSet *state_set;
+  GtkLabelAccessibleLink *link;
+  GtkWidget *widget;
+
+  link = ((GtkLabelAccessibleLinkImpl *)obj)->link;
+
+  state_set = atk_object_ref_state_set (atk_object_get_parent (obj));
+
+  widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (atk_object_get_parent (obj)));
+  if (widget)
+    {
+      if (gtk_widget_get_can_focus (widget))
+        {
+          atk_state_set_add_state (state_set, ATK_STATE_FOCUSABLE);
+          if (_gtk_label_get_link_focused (GTK_LABEL (widget), link->index))
+            atk_state_set_add_state (state_set, ATK_STATE_FOCUSED);
+          else
+            atk_state_set_remove_state (state_set, ATK_STATE_FOCUSED);
+        }
+
+      if (_gtk_label_get_link_visited (GTK_LABEL (widget), link->index))
+        atk_state_set_add_state (state_set, ATK_STATE_VISITED);
+    }
+
+  return state_set;
+}
+
 static void
 _gtk_label_accessible_link_impl_init (GtkLabelAccessibleLinkImpl *impl)
 {
@@ -136,8 +166,10 @@ static void
 _gtk_label_accessible_link_impl_class_init (GtkLabelAccessibleLinkImplClass *class)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (class);
+  AtkObjectClass *atk_obj_class = ATK_OBJECT_CLASS (class);
 
   object_class->finalize = _gtk_label_accessible_link_impl_finalize;
+  atk_obj_class->ref_state_set = gtk_label_accessible_link_impl_ref_state_set;
 }
 
 static gchar *
@@ -1110,6 +1142,33 @@ _gtk_label_accessible_update_links (GtkLabel *label)
   create_links (GTK_LABEL_ACCESSIBLE (obj));
 }
 
+void
+_gtk_label_accessible_focus_link_changed (GtkLabel *label)
+{
+  AtkObject *obj;
+  GtkLabelAccessible *accessible;
+  GList *l;
+  GtkLabelAccessibleLinkImpl *impl;
+  gboolean focused;
+
+  obj = _gtk_widget_peek_accessible (GTK_WIDGET (label));
+  if (obj == NULL)
+    return;
+
+  accessible = GTK_LABEL_ACCESSIBLE (obj);
+
+  for (l = accessible->priv->links; l; l = l->next)
+    {
+      impl = l->data;
+      focused = _gtk_label_get_link_focused (label, impl->link->index);
+      if (impl->link->focused != focused)
+        {
+          impl->link->focused = focused;
+          atk_object_notify_state_change (ATK_OBJECT (impl), ATK_STATE_FOCUSED, focused);
+        }
+    }
+}
+
 static AtkHyperlink *
 gtk_label_accessible_get_link (AtkHypertext *hypertext,
                                gint          idx)
diff --git a/gtk/a11y/gtklabelaccessibleprivate.h b/gtk/a11y/gtklabelaccessibleprivate.h
index 33597f2..a4c61c2 100644
--- a/gtk/a11y/gtklabelaccessibleprivate.h
+++ b/gtk/a11y/gtklabelaccessibleprivate.h
@@ -25,6 +25,7 @@ G_BEGIN_DECLS
 void _gtk_label_accessible_text_deleted  (GtkLabel *label);
 void _gtk_label_accessible_text_inserted (GtkLabel *label);
 void _gtk_label_accessible_update_links  (GtkLabel *label);
+void _gtk_label_accessible_focus_link_changed (GtkLabel *label);
 
 G_END_DECLS
 
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 8d81de8..4873898 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -4514,6 +4514,7 @@ gtk_label_grab_focus (GtkWidget *widget)
           link = priv->select_info->links->data;
           priv->select_info->selection_anchor = link->start;
           priv->select_info->selection_end = link->start;
+          _gtk_label_accessible_focus_link_changed (label);
         }
     }
 }
@@ -4540,6 +4541,7 @@ gtk_label_focus (GtkWidget        *widget,
               focus_link = l->data;
               info->selection_anchor = focus_link->start;
               info->selection_end = focus_link->start;
+              _gtk_label_accessible_focus_link_changed (label);
             }
         }
 
@@ -4566,6 +4568,7 @@ gtk_label_focus (GtkWidget        *widget,
             if (link->start > index)
               {
                 gtk_label_select_region_index (label, link->start, link->start);
+                _gtk_label_accessible_focus_link_changed (label);
                 return TRUE;
               }
           }
@@ -4577,6 +4580,7 @@ gtk_label_focus (GtkWidget        *widget,
             if (link->end < index)
               {
                 gtk_label_select_region_index (label, link->start, link->start);
+                _gtk_label_accessible_focus_link_changed (label);
                 return TRUE;
               }
           }
@@ -4617,6 +4621,7 @@ gtk_label_focus (GtkWidget        *widget,
           focus_link = l->data;
           info->selection_anchor = focus_link->start;
           info->selection_end = focus_link->start;
+          _gtk_label_accessible_focus_link_changed (label);
           gtk_widget_queue_draw (widget);
 
           return TRUE;