+(define-layered-class define-description-attribute
+ :in-layer #.(defining-description 'editable)
+ ()
+ ((edit-attribute-p
+ :initform :inherit
+ :layered-accessor attribute-editp
+ :initarg :editp
+ :layered t
+ :special t)
+ (setter
+ :initarg :setter
+ :layered t
+ :layered-accessor attribute-setter
+ :initform nil)
+ (attribute-editor
+ :initarg :editor
+ :layered t
+ :accessor attribute-editor
+ :initform (make-instance 'attribute-editor)
+ :documentation "This ones a bit odd")))
+
+(define-layered-method attribute-setter (object)
+ nil)
+
+(defmethod shared-initialize :after ((object standard-attribute)
+ slots &rest args &key input &allow-other-keys)
+
+ (when input
+ (setf (attribute-editor object)
+ (apply #'make-instance (find-editor-class input)
+ input))))
+
+
+(defun find-editor-class (spec)
+ (let ((class (getf spec :class))
+ (type (getf spec :type)))
+ (or class (when
+ (and type (symbolp type))
+ (let ((name (format nil "~A-~A" type 'attribute-editor)))
+ (or (unless (eq (find-package :cl)
+ (symbol-package type))
+ (find-class (intern name (symbol-package type)) nil))
+ (find-class (intern name) nil)
+ (find-class (intern name :lol) nil)
+ 'string-attribute-editor))))))
+
+(defclass attribute-editor ()
+ ((class :initarg :class)
+ (type :initarg :type
+ :initform 'string
+ :accessor attribute-editor-type)
+ (parser :initarg :parse-using
+ :initform 'identity
+ :accessor attribute-editor-parsing-function)
+ (attributes :initarg :attributes
+ :initform nil
+ :accessor attribute-editor-attributes)
+ (prompt :initarg :prompt
+ :initform nil)
+ (unbound-value
+ :initarg :unbound-value
+ :initform "")))
+
+
+
+(defclass string-attribute-editor (attribute-editor) ())
+(defclass text-attribute-editor (string-attribute-editor) ())
+
+(deftype password () 'string)
+
+(defclass password-attribute-editor (string-attribute-editor) ())
+
+(defclass number-attribute-editor (attribute-editor) ()
+ (:default-initargs
+ :parse-using 'parse-number:PARSE-NUMBER
+ :type 'number))
+
+(defun parse-attribute-value (attribute value)
+ (funcall (attribute-editor-parsing-function
+ (attribute-editor attribute))
+ value))
+
+(define-layered-function display-attribute-editor (attribute)
+ (:method (attribute)
+ (setf (attribute-value attribute)
+ (funcall (attribute-editor-parsing-function
+ (attribute-editor attribute))
+ (read-line)))))
+