(in-package :lisp-on-lines)
-
(define-description editable ()
()
(:mixinp t))
-(define-description T ()
- ((editp :label "Edit by Default?"
- :value nil
- :editp nil)
- (identity :editp nil)
- (type :editp nil)
- (class :editp nil))
- (:in-description editable))
-
-(define-layered-function (setf attribute-value) (v o a)
- (:method (value object attribute)
- (let ((setter (attribute-setter attribute)))
- (if setter
- (funcall setter value object)
- (error "No setter in ~A for ~A" attribute object)))))
-
(define-layered-class standard-attribute
:in-layer #.(defining-description 'editable)
()
((edit-attribute-p
:initform :inherit
- :accessor %attribute-editp
+ :layered-accessor attribute-editp
:initarg :editp
:layered t)
(setter
:initarg :setter
:layered t
:accessor attribute-setter
- :initform nil)))
+ :initform nil)
+ (attribute-editor
+ :initarg :editor
+ :layered t
+ :accessor attribute-editor
+ :initform (make-instance 'attribute-editor)
+ :documentation "This ones a bit odd")))
+
+(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 (find-class (intern name (symbol-package type)) nil)
+ (find-class (intern name) 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)
-(define-layered-function attribute-editp (object attribute)
- (:method (object attribute) nil))
+(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)))))
+
+(define-description T ()
+ ((editp :label "Edit by Default?"
+ :value nil
+ :editp nil)
+ (identity :editp nil)
+ (type :editp nil)
+ (class :editp nil))
+ (:in-description editable))
+
+(define-layered-method (setf attribute-value-using-object)
+ :in-layer #.(defining-description 'editable)(value object attribute)
+
+ (let ((setter (attribute-setter attribute)))
+ (if setter
+ (funcall setter value object)
+ (error "No setter in ~A for ~A" attribute object))))
+
+
+(define-layered-function attribute-editp (attribute)
+ (:method (attribute) nil))
(define-layered-method attribute-editp
:in-layer #.(defining-description 'editable)
- (object (attribute standard-attribute))
-
- (if (eq :inherit (%attribute-editp attribute))
- (attribute-value object (find-attribute
- (attribute-description attribute)
- 'editp))
- (%attribute-editp attribute)))
+ ((attribute standard-attribute))
+ (let ((value (attribute-value attribute)))
+ (unless (or (unbound-slot-value-p value)
+ (typep value
+ (attribute-editor-type
+ (attribute-editor attribute))))
+ (return-from attribute-editp nil)))
+ (let ((edit? (call-next-method)))
+ (if (eq :inherit edit?)
+ (attribute-value (find-attribute
+ (attribute-description attribute)
+ 'editp))
+ edit?)))
-(define-layered-method display-using-description
+(define-layered-method display-attribute-value
:in-layer #.(defining-description 'editable)
- ((attribute standard-attribute) display object &rest args)
-
- (declare (ignore args))
- (format t "Editable? ~A ~A" (attribute-label attribute) (attribute-editp object attribute)))
+ ((attribute standard-attribute))
+ (if (attribute-editp attribute)
+ (display-attribute-editor attribute)
+ (call-next-method)))
+
+
+
\ No newline at end of file