From 03802c3c0b7fc68d0e14fe39a1adf637cefbf66d Mon Sep 17 00:00:00 2001
From: espen <espen>
Date: Thu, 6 Jan 2005 21:00:51 +0000
Subject: [PATCH] New method CREATE-CALLBACK-FUNCTION

---
 gtk/gtkcontainer.lisp | 11 ++++++++++-
 gtk/gtkwidget.lisp    | 20 ++++++++++++++++++--
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/gtk/gtkcontainer.lisp b/gtk/gtkcontainer.lisp
index a6981c6..6729eb3 100644
--- a/gtk/gtkcontainer.lisp
+++ b/gtk/gtkcontainer.lisp
@@ -15,7 +15,7 @@
 ;; License along with this library; if not, write to the Free Software
 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-;; $Id: gtkcontainer.lisp,v 1.15 2004-12-29 21:14:23 espen Exp $
+;; $Id: gtkcontainer.lisp,v 1.16 2005-01-06 21:00:53 espen Exp $
 
 (in-package "GTK")
 
@@ -30,6 +30,15 @@
    initargs :child :children))
 
 
+(defmethod create-callback-function ((container container) function arg1)
+  (if (eq arg1 :children)
+      #'(lambda (&rest args)
+	  (mapc #'(lambda (child)
+		    (apply function child (rest args)))
+		(container-children container)))
+    (call-next-method)))
+
+
 (defbinding %container-add () nil
   (container container)
   (widget widget))
diff --git a/gtk/gtkwidget.lisp b/gtk/gtkwidget.lisp
index 0320921..c680614 100644
--- a/gtk/gtkwidget.lisp
+++ b/gtk/gtkwidget.lisp
@@ -15,7 +15,7 @@
 ;; License along with this library; if not, write to the Free Software
 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-;; $Id: gtkwidget.lisp,v 1.13 2004-12-20 20:09:53 espen Exp $
+;; $Id: gtkwidget.lisp,v 1.14 2005-01-06 21:00:51 espen Exp $
 
 (in-package "GTK")
 
@@ -49,7 +49,23 @@
 	:parent parent :child object))))
    (t (call-next-method))))
 
-
+(defmethod create-callback-function ((widget widget) function arg1)
+  (if (eq arg1 :parent)
+      #'(lambda (&rest args)
+	  (if (slot-boundp widget 'parent)
+	      (apply function (widget-parent widget) (rest args))
+	    (signal-connect widget 'parent-set
+	     #'(lambda (old-parent)
+		 (declare (ignore old-parent))
+		 (let ((*signal-stop-emission* 
+			#'(lambda ()
+			    (warn "Ignoring emission stop in delayed signal handler"))))
+		   (apply function (widget-parent widget) (rest args))))
+	     :remove t)
+;	    (warn "Widget has no parent -- ignoring signal")
+	    ))
+    (call-next-method)))
+      
 (defun child-property-value (widget slot)
   (slot-value (widget-child-properties widget) slot))
 
-- 
2.11.0