--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/w3/widget.el	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,78 @@
+;;; widget.el --- a library of user interface components.
+;;
+;; Copyright (C) 1996 Free Software Foundation, Inc.
+;;
+;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Keywords: help, extensions, faces, hypermedia
+;; Version: 0.4
+
+;;; Commentary:
+;;
+;; The documentation for the unbundled version of this library is
+;; available in `custom.texi'.
+;;
+;; This file only contain the code needed to define new widget types.
+;; Everything else is autoloaded from `widget-edit.el'.
+
+;;; Code:
+
+(eval-when-compile (require 'cl))
+
+(let ((keywords 
+       '(:create :convert-widget :format :value-create :tag :doc :from :to
+		 :args :value :value-from :value-to :action :value-set
+		 :value-delete :match :parent :delete :menu-tag-get
+		 :value-get :choice :void :menu-tag :on :off :on-type 
+		 :off-type :notify :entry-format :button :children
+		 :buttons :insert-before :delete-at :format-handler
+		 :widget :value-pos :value-to-internal :indent
+		 :help-echo
+		 :value-to-external :validate :error :directory :must-match
+		 :initial :type-error :value-inline :inline :match-inline
+		 :greedy :button-face :value-face :keymap :size)))
+  (while keywords
+    (or (boundp (car keywords))
+	(set (car keywords) (car keywords)))
+    (setq keywords (cdr keywords))))
+
+(defun define-widget (name class doc &rest args)
+  "Define a new widget type named NAME from CLASS.
+
+NAME and CLASS should both be symbols, CLASS should be one of the
+existing widget types, or nil to create the widget from scratch.
+
+After the new widget has been defined, the following two calls will
+create identical widgets:
+
+* (widget-create NAME)
+
+* (apply 'widget-create CLASS ARGS)
+
+The third argument DOC is a documentation string for the widget."
+  (put name 'widget-type (cons class args))
+  (put name 'widget-documentation doc))
+
+(autoload 'widget-create "widget-edit")
+(autoload 'widget-insert "widget-edit")
+
+(defun define-widget-group (name class doc &rest args)
+  "Define a new widget group named NAME.
+
+CLASS should be nil, it is reserved for future use.
+
+MATCH should be a function taking a widget group and a list of match
+types as an argument, and returning the remaining part of the list if
+the widget group matches the beginning of the list, or throwing
+`no-match' if not.
+
+CREATE should be a function taking a widget group and a list of values
+as arguments, and returning a cons whose car is a list of widgets
+representing the matches values and whose cdr is the remaining
+unmatched values."
+  (put name 'widget-group (cons class args)))
+
+;;; The End.
+
+(provide 'widget)
+
+;; widget.el ends here