massive refactoring in preparation of release.

[clinton/lisp-on-lines.git] / src / attributes / numbers.lisp

(in-package :lisp-on-lines)

(defattribute number-attribute (base-attribute)
  ()
  (:type-name number))

;;;; INTEGER
(defattribute integer-attribute (number-attribute)
  ()
  (:type-name integer))


(define-layered-method (setf attribute-value) ((value string) object (attribute integer-attribute)) 	       
  (let ((*read-eval* nil))
    (unless (string= "" value)
      (let ((value (read-from-string value)))
	(when (numberp value)
	  (setf (attribute-value object attribute) value))))))

;;;; REALS

(defattribute real-attribute (number-attribute)
  ()
  (:type-name real))

(define-layered-method (setf attribute-value) ((value string) object (attribute real-attribute))
  (let ((*read-eval* nil))
    (unless (string= "" value)
      (let ((value (read-from-string value)))
	(when (numberp value)
	  (setf (attribute-value object attribute) value))))))


;;;; Currency
(defattribute currency-attribute (real-attribute)
  ()
  (:type-name currency))

(defdisplay
   ((currency currency-attribute) object)
 (<:as-html "$")
 (call-next-method))

(defdisplay :in-layer editor
   ((currency currency-attribute) object)
    (<:as-html "$")
    (<:input
     :type "text"
     :id (id currency)
     :name (callback currency)
     :value (format nil "~$" (or (attribute-value object currency) ""))))