[gtk+] Fix problems with state propagation

[Matthias Clasen <matthiasc src gnome org>]

commit 23f9bdd586e0b0aac11d9fbcaeaf81c056d2a036
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 7 11:23:43 2011 -0500

    Fix problems with state propagation
    
    Sensitivity changes were not properly propagated down the
    hierarchy. There were two issues here:
    
    a) correctly identifying when a state change request affects
       sensitivity
    b) not filtering out sensitivity in gtk_widget_propagate_state(),
      since gtk_widget_set_sensitivity() uses that to do its work
    
    https://bugzilla.gnome.org/show_bug.cgi?id=641431

 gtk/gtkwidget.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 410f493..b2f14db 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -6959,10 +6959,12 @@ _gtk_widget_update_state_flags (GtkWidget     *widget,
   /* Handle insensitive first, since it is propagated
    * differently throughout the widget hierarchy.
    */
-  if ((flags & GTK_STATE_FLAG_INSENSITIVE) !=
-      (priv->state_flags & GTK_STATE_FLAG_INSENSITIVE))
-    gtk_widget_set_sensitive (widget,
-                              operation != STATE_CHANGE_UNSET);
+  if ((priv->state_flags & GTK_STATE_FLAG_INSENSITIVE) && (flags & GTK_STATE_FLAG_INSENSITIVE) && (operation == STATE_CHANGE_UNSET))
+    gtk_widget_set_sensitive (widget, TRUE);
+  else if (!(priv->state_flags & GTK_STATE_FLAG_INSENSITIVE) && (flags & GTK_STATE_FLAG_INSENSITIVE) && (operation != STATE_CHANGE_UNSET))
+    gtk_widget_set_sensitive (widget, FALSE);
+  else if ((priv->state_flags & GTK_STATE_FLAG_INSENSITIVE) && !(flags & GTK_STATE_FLAG_INSENSITIVE) && (operation == STATE_CHANGE_REPLACE))
+    gtk_widget_set_sensitive (widget, TRUE);
 
   if (operation != STATE_CHANGE_REPLACE)
     flags &= ~(GTK_STATE_FLAG_INSENSITIVE);
@@ -11245,8 +11247,8 @@ gtk_widget_propagate_state (GtkWidget    *widget,
         {
           data->parent_sensitive = gtk_widget_is_sensitive (widget);
 
-          /* Do not propagate insensitive state further */
-          data->flags &= ~(GTK_STATE_FLAG_INSENSITIVE | GTK_STATE_FLAG_FOCUSED);
+          /* Do not propagate focused state further */
+          data->flags &= ~GTK_STATE_FLAG_FOCUSED;
 
           if (data->use_forall)
             gtk_container_forall (GTK_CONTAINER (widget),