-(in-package :lisp-on-lines)
-
-(defparameter *default-type* :ucw)
-
-;;; some utilities for merging plists
-
-(defun plist-nunion (new-props plist)
- (loop for cons on new-props by #'cddr
- do (setf (getf plist (first cons)) (second cons))
- finally (return plist)))
-
-(defun plist-union (new-props plist)
- "Non-destructive version of plist-nunion"
- (plist-nunion new-props (copy-list plist)))
-
-
-;;; an alist of model-class-name . attributes
-;;; should really be a hash-table.
-(defvar *attribute-map* (list))
-
-(defun find-or-create-attributes (class-name)
- "return an exisiting class attribute map or create one.
-
-A map is a cons of class-name . attributes.
-attributes is an alist keyed on the attribute name."
- (or (assoc class-name *attribute-map*)
- (progn
- (setf *attribute-map* (acons class-name (list (list)) *attribute-map*))
- (assoc class-name *attribute-map*))))
+(declaim (optimize (speed 2) (space 3) (safety 0)))
-(defgeneric find-class-attributes (class))
-
-(defmethod find-class-attributes ((model t))
- (find-or-create-attributes (class-name (class-of model))))
-
-(defmethod find-class-attributes ((model symbol))
- (find-or-create-attributes model))
+(in-package :lisp-on-lines)
-(defmethod clear-class-attributes ((model t))
- (setf (cdr (find-class-attributes model)) nil))
+(defparameter *default-type* :ucw)
-(defmethod add-attribute ((model t) name def)
- (let ((map (find-class-attributes model)))
- (setf (cdr map) (acons name def (cdr map)))))
+(define-layered-class description ()
+ ((description-type
+ :initarg :type
+ :accessor description.type
+ :initform 'viewer
+ :special t)
+ (description-layers
+ :initarg :layers
+ :accessor description.layers
+ :initform nil
+ :special t)
+ (description-properties
+ :accessor description.properties
+ :initform nil
+ :special t)
+ (description-attributes
+ :accessor attributes
+ :initarg :attributes
+ :initform nil
+ :special t)))
+
+(defmethod print-object ((self description) stream)
+ (print-unreadable-object (self stream :type t)
+ (with-slots (description-type) self
+ (format t "~A" description-type))))
+
+;;;; * Occurences
+
+(defvar *occurence-map* (make-hash-table)
+ "a display is generated by associating an 'occurence'
+with an instance of a class. This is usually keyed off class-name,
+although an arbitrary occurence can be used with an arbitrary class.")
+
+(define-layered-class
+ standard-occurence (description)
+ ((attribute-map :accessor attribute-map :initform (make-hash-table)))
+ (:documentation
+ "an occurence holds the attributes like a class holds slot-definitions.
+Attributes are the metadata used to display, validate, and otherwise manipulate actual values stored in lisp objects."))
+
+(defun find-or-create-occurence (name)
+ "Returns the occurence associated with this name."
+ (let ((occurence (gethash name *occurence-map*)))
+ (if occurence
+ occurence
+ (let ((new-occurence (make-instance 'standard-occurence)))
+ (setf (gethash name *occurence-map*) new-occurence)
+ new-occurence))))
+
+(defun clear-occurence (occurence)
+ "removes all attributes from the occurence"
+ (setf (attribute-map occurence) (make-hash-table)))
+
+(defgeneric find-occurence (name)
+ (:method (thing)
+ nil)
+ (:method ((name symbol))
+ (find-or-create-occurence name))
+ (:method ((instance standard-object))
+ (find-or-create-occurence (class-name (class-of instance)))))
+
+
+(define-layered-class
+ attribute (description)
+ ((name :layered-accessor attribute.name
+ :initarg :name
+ :initform (gensym "ATTRIBUTE-")
+ :special t)
+ (occurence :accessor occurence :initarg :occurence :initform nil)
+ (label :initarg :label :accessor label :initform nil :special t)))
+
+;;;; * Attributes
+(defmethod print-object ((self attribute) stream)
+ (print-unreadable-object (self stream :type t)
+ (with-slots (name description-type) self
+ (format stream "~A ~A" description-type name))))
+
+(define-layered-class
+ standard-attribute (attribute)
+ ((setter :accessor setter :initarg :setter :special t :initform nil)
+ (getter :accessor getter :initarg :getter :special t :initform nil)
+ (slot-name :accessor slot-name :initarg :slot-name :special t)
+ (id :accessor id :initarg :id :special t :initform (random-string)))
+ (:documentation "Attributes are used to display a part of a thing, such as a slot of an object, a text label, the car of a list, etc."))
+
+(defmacro defattribute (name supers slots &rest args)
+ (let ((type (or (second (assoc :type-name args)) name))
+ (layer (or (second (assoc :in-layer args)) nil))
+ (properties (cdr (assoc :default-properties args)))
+ (cargs (remove-if #'(lambda (key)
+ (or (eql key :type-name)
+ (eql key :default-properties)
+ (eql key :default-initargs)
+ (eql key :in-layer)))
+ args
+ :key #'car)))
+
+ `(progn
+ (define-layered-class
+ ;;;; TODO: fix the naive way of making sure s-a is a superclass
+ ;;;; Need some MOPey goodness.
+ ,name ,@ (when layer `(:in-layer ,layer)),(or supers '(standard-attribute))
+ ,(append slots (properties-as-slots properties))
+ #+ (or) ,@ (cdr cargs)
+ ,@cargs
+ (:default-initargs :properties (list ,@properties)
+ ,@ (cdr (assoc :default-initargs args))))
-(defmethod find-attribute ((model t) name)
- (assoc name (cdr (find-class-attributes model))))
+ (defmethod find-attribute-class-for-type ((type (eql ',type)))
+ ',name))))
-(defmethod (setf find-attribute) ((def list) (model t) name)
- (let ((attr (find-attribute model name)))
- (if attr
- (prog2
- (setf (cdr attr) def)
- attr)
- (prog2
- (add-attribute model name def)
- (find-attribute model name)))))
-(defmethod set-attribute ((model t) name definition &key (inherit t))
- (setf (find-attribute model name)
- (if inherit
- (cons (car definition)
- (plist-union (cdr definition)
- (cddr (find-attribute model name))))
- definition)))
-(defmethod perform-set-attributes ((model t) definitions)
- (dolist (def definitions)
- (funcall #'set-attribute model (first def) (rest def))))
+(define-layered-class
+ display-attribute (attribute)
+ ()
+ (:documentation "Presentation Attributes are used to display objects
+using the attributes defined in an occurence. Presentation Attributes are always named using keywords."))
-(defmethod set-attribute-properties ((model t) attribute properties)
- (let ((a (find-attribute model attribute)))
- (if a
- (setf (cddr a) (plist-nunion properties (cddr a)))
- (error "Attribute ~A does not exist" attribute) )))
+(defun clear-attributes (name)
+ "removes all attributes from an occurance"
+ (clear-occurence (find-occurence name)))
-(defmethod perform-set-attribute-properties ((model t) definitions)
- (dolist (def definitions)
- (funcall #'set-attribute-properties model (car def) (cdr def))))
+(defmethod find-attribute-class-for-type (type)
+ nil)
-(defmethod perform-define-attributes ((model t) attributes)
+(defmethod find-attribute-class-for-name (name)
+ "presentation attributes are named using keywords"
+ (if (keywordp name)
+ 'display-attribute
+ 'standard-attribute))
+
+(defun make-attribute (&rest args &key name type &allow-other-keys)
+ (apply #'make-instance
+ (or (find-attribute-class-for-type type)
+ (find-attribute-class-for-name name))
+ args))
+
+(defmethod ensure-attribute ((occurence standard-occurence) &rest args &key name &allow-other-keys)
+ "Creates an attribute in the given occurence"
+ (let ((attribute (apply #'make-attribute :occurence occurence args)))
+ (setf (description.properties attribute) args)
+ (setf (gethash name (attribute-map occurence))
+ attribute)))
+
+(defmethod find-attribute ((occurence standard-occurence) name)
+ (gethash name (attribute-map occurence)))
+
+(defmethod find-all-attributes ((occurence standard-occurence))
+ (loop for att being the hash-values of (attribute-map occurence)
+ collect att))
+
+(defmethod ensure-attribute (occurence-name &rest args &key name type &allow-other-keys)
+ (declare (ignore name type))
+ (apply #'ensure-attribute
+ (find-occurence occurence-name)
+ args))
+
+;;;; The following functions make up the public interface to the
+;;;; MEWA Attribute Occurence system.
+
+(defmethod find-all-attributes (occurence-name)
+ (find-all-attributes (find-occurence occurence-name)))
+
+(defmethod find-attribute (occurence-name attribute-name)
+ "Return the ATTRIBUTE named by ATTRIBUTE-NAME in OCCURANCE-name"
+ (find-attribute (find-occurence occurence-name) attribute-name))
+
+(defmethod (setf find-attribute) ((attribute-spec list) occurence-name attribute-name)
+ "Create a new attribute in the occurence.
+ATTRIBUTE-SPEC: a list of (type name &rest initargs)"
+ (apply #'ensure-attribute occurence-name :name attribute-name :type (first attribute-spec) (rest attribute-spec)))
+
+
+(defmethod find-attribute ((attribute-with-occurence attribute) attribute-name)
+ (find-attribute (occurence attribute-with-occurence) attribute-name))
+
+(defmethod set-attribute-properties ((occurence-name t) attribute properties)
+ (setf (description.properties attribute) (plist-nunion
+ properties
+ (description.properties attribute)))
+ (loop for (initarg value) on (description.properties attribute)
+ by #'cddr
+ with map = (initargs.slot-names attribute)
+ do (let ((s-n (assoc-if #'(lambda (x) (member initarg x)) map)))
+
+ (if s-n
+ (progn
+ (setf (slot-value attribute
+ (cdr s-n))
+ value))
+ (warn "Cannot find initarg ~A in attribute ~S" initarg attribute)))
+ finally (return attribute)))
+
+(defmethod set-attribute (occurence-name attribute-name attribute-spec &key (inherit t))
+ "If inherit is T, sets the properties of the attribute only, unless the type has changed.
+otherwise, (setf find-attribute)"
+ (let ((att (find-attribute occurence-name attribute-name)))
+ (if (and att inherit (or (eql (car attribute-spec)
+ (description.type att))
+ (eq (car attribute-spec) t)))
+ (set-attribute-properties occurence-name att (cdr attribute-spec))
+ (setf (find-attribute occurence-name attribute-name)
+ (cons (car attribute-spec)
+ (plist-nunion
+ (cdr attribute-spec)
+ (when att (description.properties att))))))))
+
+(defmethod perform-define-attributes ((occurence-name t) attributes)
(loop for attribute in attributes
do (destructuring-bind (name type &rest args)
attribute
- (cond ((eq type t)
- ;;use the existing (default) type
- (set-attribute-properties model name args))
- ((not (null type))
- ;;set the type as well
- (set-attribute model name (cons type args)))))))
+ (cond ((not (null type))
+ ;;set the type as well
+ (set-attribute occurence-name name (cons type args)))))))
-(defmacro define-attributes (models &body attribute-definitions)
+(defmacro define-attributes (occurence-names &body attribute-definitions)
`(progn
- ,@(loop for model in models
- collect `(perform-define-attributes (quote ,model) (quote ,attribute-definitions)))
- (mapcar #'find-class-attributes (quote ,models ))))
+ ,@(loop for occurence-name in occurence-names
+ collect `(perform-define-attributes (quote ,occurence-name) (quote ,attribute-definitions)))))
+
+(defmethod find-display-attribute (occurence name)
+ (find-attribute occurence (intern (symbol-name name) "KEYWORD")))
+
+(defmethod find-description (object type)
+ (let ((occurence (find-occurence object)))
+ (or (find-display-attribute
+ occurence
+ type)
+ occurence)))
+
+(defmethod setter (attribute)
+ (warn "Setting ~A in ~A" attribute *context*)
+ (let ((setter (getf (description.properties attribute) :setter))
+ (slot-name (getf (description.properties attribute) :slot-name)))
+ (cond (setter
+ setter)
+ (slot-name
+ #'(lambda (value object)
+ (setf (slot-value object slot-name) value)))
+ (t
+ #'(lambda (value object)
+ (warn "Can't find anywere to set ~A in ~A using ~A" value object attribute))))))
+
-(defun find-presentation-attributes (model)
- (remove nil (mapcar #'(lambda (att)
- (when (keywordp (car att))
- att))
- (cdr (find-class-attributes model)))))
+(define-layered-function attribute-value (instance attribute)
+ (:documentation " Like SLOT-VALUE for instances, the base method calls GETTER."))
+
+(define-layered-method attribute-value (instance (attribute standard-attribute))
+ (with-slots (getter slot-name) attribute
+ (cond ((and (slot-boundp attribute 'getter) getter)
+ (funcall getter instance))
+ ((and (slot-boundp attribute 'slot-name) slot-name)
+ (when (slot-boundp instance slot-name)
+ (slot-value instance slot-name)))
+ ((and (slot-exists-p instance (attribute.name attribute)) )
+ (when (slot-boundp instance (attribute.name attribute))
+ (slot-value instance (attribute.name attribute)))))))
+
+(define-layered-function (setf attribute-value) (value instance attribute))
+
+(define-layered-method
+ (setf attribute-value) (value instance (attribute standard-attribute))
+
+ (with-slots (setter slot-name) attribute
+ (cond ((and (slot-boundp attribute 'setter) setter)
+
+ (funcall setter value instance))
+ ((and (slot-boundp attribute 'slot-name) slot-name)
+ (setf (slot-value instance slot-name) value))
+ ((and (slot-exists-p instance (attribute.name attribute)) slot-name)
+ (setf (slot-value instance (attribute.name attribute)) value))
+ (t
+ (error "Cannot set ~A in ~A" attribute instance)))))
;;;; ** Default Attributes
(defvar *default-attributes-class-name* 'default)
+(defmacro with-default-attributes ((occurence-name) &body body)
+ `(let ((*default-attributes-class-name* ',occurence-name))
+ ,@body))
+
(define-attributes (default)
(boolean mewa-boolean)
(string mewa-string)
(:viewer mewa-viewer)
(:editor mewa-editor)
(:creator mewa-creator)
+ (:as-string mewa-one-line-presentation)
(:one-line mewa-one-line-presentation)
(:listing mewa-list-presentation :global-properties (:editablep nil) :editablep t)
(:search-model mewa-object-presentation))
-
-(defun find-default-presentation-attributes ()
- (if (eql *default-attributes-class-name* 'default)
- (find-presentation-attributes 'default)
- (remove-duplicates (append
- (find-presentation-attributes 'default)
- (find-presentation-attributes
- *default-attributes-class-name*)))))
-
+(defun find-presentation-attributes (occurence-name)
+ (loop for att in (find-all-attributes occurence-name)
+ when (typep att 'display-attribute)
+ collect att))
-(defmacro with-default-attributes ((model-name) &body body)
- `(let ((*default-attributes-class-name* ',model-name))
- ,@body))
+(defun attribute-to-definition (attribute)
+ (nconc (list (attribute.name attribute)
+ (description.type attribute))
+ (description.properties attribute)))
+(defun find-default-presentation-attribute-definitions ()
+ (if (eql *default-attributes-class-name* 'default)
+ (mapcar #'attribute-to-definition (find-presentation-attributes 'default))
+ (remove-duplicates (mapcar #'attribute-to-definition
+ (append
+ (find-presentation-attributes 'default)
+ (find-presentation-attributes
+ *default-attributes-class-name*))))))
(defun gen-ptype (type)
- (let ((type (if (consp type) (car type) type)))
- (or (second (find-attribute *default-attributes-class-name* type))
- (second (find-attribute 'default type))
- type)))
+ (let* ((type (if (consp type) (car type) type))
+ (possible-default (find-attribute *default-attributes-class-name* type))
+ (real-default (find-attribute 'default type)))
+ (cond
+ (possible-default
+ (description.type possible-default))
+ (real-default
+ (description.type real-default))
+ (t type))))
(defun gen-presentation-slots (instance)
(mapcar #'(lambda (x) (gen-pslot (cadr x)
:label ,label
:slot-name ,slot-name)))
-(defun gen-presentation-args (instance args)
- (declare (ignore instance))
- (if args args nil))
-
-
-(defmethod find-default-attributes ((model t))
- "return the default attributes for a given model using the meta-model's meta-data"
- (append (mapcar #'(lambda (s)
- (cons (car s)
- (gen-pslot
- (if (meta-model:foreign-key-p model (car s))
- 'foreign-key
- (cadr s))
- (string (car s)) (car s))))
- (meta-model:list-slot-types model))
- (mapcar #'(lambda (s)
- (cons s (append (gen-pslot 'has-many (string s) s)
- `(:presentation
- (make-presentation
- ,model
- :type :one-line)))))
- (meta-model:list-has-many model))
- (find-default-presentation-attributes)))
-
-(defmethod set-default-attributes ((model t))
- "Set the default attributes for MODEL"
- (clear-class-attributes model)
- (mapcar #'(lambda (x)
- (setf (find-attribute model (car x)) (cdr x)))
- (find-default-attributes model)))
-
-
-(defgeneric attributes-getter (model))
+
-;;;presentations
+;;;; DEPRECIATED: Mewa presentations
+;;;; this is legacy cruft.
+
(defcomponent mewa ()
((instance :accessor instance :initarg :instance)
(mapcar #'class-name
(it.bese.arnesi.mopp:compute-class-precedence-list (class-of (instance self)))))
-(defmethod find-all-attributes ((self mewa))
- (reduce #'append
- (mapcar #'(lambda (x)
- (cdr (find-class-attributes x)))
- (classes self))))
-
-(defun make-attribute (&rest props &key type &allow-other-keys)
- (remf props :type)
- (cons (gensym) (cons type props)))
-
+(defun make-presentation-for-attribute-list-item
+ (occurence att-name plist parent-presentation &optional type)
+ (declare (type list plist) (type symbol att-name))
+ "This is a ucw specific function that will eventually be factored elsewhere."
+ (let* ((attribute (find-attribute occurence att-name))
+ (type (when attribute (or type (description.type attribute))))
+ (class-name
+ (or (gethash (if (consp type)
+ (car type)
+ type)
+ *presentation-slot-type-mapping*)
+ (error "Can't find slot type for ~A in ~A from ~A" att-name occurence parent-presentation))))
+
+ ;(warn "~%~% **** Making attribute ~A ~%~%" class-name)
+ (cons (attribute.name attribute) (apply #'make-instance
+ class-name
+ (append (plist-nunion
+ plist
+ (plist-union
+ (global-properties parent-presentation)
+ (description.properties attribute)))
+ (list :size 30 :parent parent-presentation))))))
+
+(defmethod find-applicable-attributes-using-attribute-list (occurence attribute-list)
+ "Returns a list of functions that, when called with an object presentation,
+returns the ucw slot presentation that will be used to present this attribute
+in that object presentation."
+ (loop for att in attribute-list
+ with funs = (list)
+ do (let ((att att)) (cond
+ ;;simple casee
+ ((symbolp att)
+ (push #'(lambda (p)
+ (make-presentation-for-attribute-list-item occurence att nil p))
+ funs))
+ ;;if the car is a keyword then this is an inline def
+ ;; drewc nov 12 2005:
+ ;; i never used this, and never told anybody about it.
+ ;; removing it.
+ #+ (or) ((and (listp x) (keywordp (car x)))
+ (let ((att (apply #'make-attribute x)))
+ (setf (cddr att)
+ (plist-union (cddr att) (global-properties self)))
+ att))
+
+ ;; if the plist has a :type
+ ((and (listp att) (getf (cdr att) :type))
+ (let ((type (getf (cdr att) :type)))
+ (push #'(lambda (p)
+ (make-presentation-for-attribute-list-item
+ occurence (first att)
+ (cdr att)
+ p
+ type))
+ funs)))
+ ;;finally if we are just overiding the props
+ ((and (listp att) (symbolp (car att)))
+ (push #'(lambda (p)
+ (make-presentation-for-attribute-list-item occurence (first att) (rest att) p))
+ funs))))
+ finally (return (nreverse funs))))
+
+
+(defun find-attribute-names (mewa)
+ (mapcar #'(lambda (x)
+ (if (listp x)
+ (first x)
+ x))
+ (attributes mewa)))
(defmethod find-applicable-attributes ((self mewa))
- (let ((all-attributes (find-all-attributes self)))
- (flet ((gen-att (x) (let ((att (assoc x all-attributes)))
- (when att
- (setf (cddr att) (plist-union (global-properties self) (cddr att)))
- att))))
- (if (attributes self)
- (remove 'nil
- (mapcar #'(lambda (x)
- (cond
- ;;simple casee
- ((symbolp x)
- (gen-att x))
- ;;if the car is a keyword then this is an inline def
- ((and (listp x) (keywordp (car x)))
- (let ((att (apply #'make-attribute x)))
- (setf (cddr att)
- (plist-union (cddr att) (global-properties self)))
- att))
- ;; if the plist has a :type
- ((and (listp x) (getf (cdr x) :type))
- (let ((new (cdr (apply #'make-attribute (cdr x))))
- (def (gen-att (car x))))
- (setf (cdr new) (plist-union (cdr new) (cddr def)))
- (cons (car def) new)))
- ;;finally if we are just overiding the props
- ((and (listp x) (symbolp (car x)))
- (let ((new (cdr (apply #'make-attribute (cdr x))))
- (def (gen-att (car x))))
- (setf (cdr new) (plist-union (cdr new) (cddr def)))
- (cons (car def) (cons (second def) (cdr new)))))
-
- )
- )
-
- (attributes self)))
- all-attributes))))
-
-(defmethod find-slot-presentation-for-attribute ((self mewa) attribute)
- (let ((class-name
- (or (gethash (if (consp (second attribute))
- (car (second attribute))
- (second attribute))
- *presentation-slot-type-mapping*)
- (error "Can't find slot type for ~A in ~A" attribute self ))))
-
- (cons (first attribute) (apply #'make-instance
- class-name
- (append (cddr attribute) (list :parent self :size 30))))))
+ (if (attributes self)
+ (find-applicable-attributes-using-attribute-list (instance self) (attributes self))
+ (find-applicable-attributes-using-attribute-list (instance (get-attributes self)))))
+
(defmethod find-slot-presentations ((self mewa))
- (mapcar #'(lambda (a) (find-slot-presentation-for-attribute self a))
+ (mapcar #'(lambda (a) (funcall a self))
(find-applicable-attributes self)))
(defmethod find-attribute-slot ((self mewa) (attribute symbol))
(defmethod make-presentation ((object t) &key (type :viewer) (initargs nil))
- (let* ((p (make-instance 'mewa-object-presentation))
- (a (progn (setf (slot-value p 'instance) object)
- (initialize-slots p)
- (assoc type (find-all-attributes p))))
- (i (apply #'make-instance (or (second a)
- ;; if we didnt find the type,
- ;; use the symbol as a class.
- (if (eql (symbol-package type)
- (find-package 'keyword))
- (symbol-name type)
- type))
- (plist-union initargs (cddr a)))))
+ (warn "making old-style for ~A ~A ~A" object type initargs)
+ ;(warn "Initargs : ~A" initargs)
+ (let* ((a (find-attribute object type))
+ (d-a (when a (find-display-attribute (occurence a) (description.type (occurence a)))))
+ (i (apply #'make-instance
+ (if d-a
+ (find-old-type (description.type a))
+ type)
+ (plist-union initargs (when a
+ (description.properties a))))))
(setf (slot-value i 'instance) object)
(initialize-slots i)
(setf (slot-value i 'initializedp) t)
(call-next-method)
(render-on res (slot-value self 'body)))
-(defmethod instance-is-stored-p ((instance clsql:standard-db-object))
- (slot-value instance 'clsql-sys::view-database))
-
-(defmethod instance-is-stored-p ((mewa mewa))
- (instance-is-stored-p (instance mewa)))
(defaction cancel-save-instance ((self mewa))
(cond