-(defpackage :mewa
- (:use :ucw :common-lisp)
- (:export :mewa :mewa-object-presentation :mewa-one-line-presentation :find-attribute :set-default-attributes :make-presentation :call-presentation :label :set-attribute :find-class-attributes))
-
-(in-package :mewa)
-
-(defparameter *default-type* :ucw)
-
-;;; maps meta-model slot-types to slot-presentation
-(defparameter *slot-type-map* '(number ucw:currency))
-
-;;; an alist of model-class-name . attributes
-;;; should really be a hash-table.
-(defvar *attribute-map* (list))
-
-;;; some utilities for merging plists
-
-(defun plist-nunion (new-props plist)
- (loop for cons on new-props
- for i from 1 to (length new-props)
- when (oddp i)
- 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)))
-
-(defun gen-ptype (type)
- (or (getf *slot-type-map* type) type))
-
-(defun gen-presentation-slots (instance)
- (mapcar #'(lambda (x) (gen-pslot (cadr x)
- (string (car x))
- (car x)))
- (list-slot-types instance)))
-
-
-(defun gen-pslot (type label slot-name)
- (copy-list `(,(gen-ptype type)
- :label ,label
- :slot-name ,slot-name)))
-
-(defun gen-presentation-args (instance args)
- (declare (ignore instance))
- (if args args nil))
-
-
-(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 nreeame."
- (or (assoc class-name *attribute-map*)
- (progn
- (setf *attribute-map* (acons class-name (list (list)) *attribute-map*))
- (assoc class-name *attribute-map*))))
-
-(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))
-
-(defmethod add-attribute ((model t) name def)
- (let ((map (find-class-attributes model)))
- (setf (cdr map) (acons name def (cdr map)))))
-
-(defmethod find-attribute ((model t) name)
- (assoc name (cdr (find-class-attributes model))))
-
-(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)))
-
-
-(defgeneric attributes-getter (model))
-
-(defcomponent mewa ()
- ((attributes
- :initarg :attributes
- :accessor attributes
- :initform nil)
- (attributes-getter
- :accessor attributes-getter
- :initform #'get-attributes
- :initarg :attributes-getter)
- (global-properties
- :initarg :global-properties
- :accessor global-properties
- :initform nil)
- (classes
- :initarg :classes
- :accessor classes
- :initform nil)
- (use-instance-class-p
- :initarg :use-instance-class-p
- :accessor use-instance-class-p
- :initform t)
- (initializedp :initform nil)
- (modifiedp :accessor modifiedp :initform nil)))
-
-(defcomponent mewa-object-presentation (mewa object-presentation) ())
-
-(defcomponent mewa-one-line-presentation (mewa one-line-presentation)
- ()
- (:default-initargs :attributes-getter #'one-line-attributes-getter))
-
-(defmethod attributes :around ((self mewa))
- (let ((a (call-next-method)))
- (or a (funcall (attributes-getter self) self))))
-
-(defmethod get-attributes ((self mewa))
- (if (instance self)
- (append (meta-model:list-slots (instance self))
- (meta-model:list-has-many (instance self)))
- nil))
-
-(defmethod one-line-attributes-getter ((self mewa))
- (or (meta-model:list-keys (instance self))))
-
-
-
-(defmethod find-instance-classes ((self mewa))
- (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)))
-
-
-(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-presentations ((self mewa))
- (mapcar #'(lambda (s)
- (let ((class-name (or (gethash (second s) ucw::*slot-type-mapping*) 'mewa-object-presentation)))
- (apply #'make-instance
- class-name
- (append (cddr s) (list :parent self)))))
- (find-applicable-attributes self)))
-
-(defmethod default-attributes ((model t))
- (append (mapcar #'(lambda (s) (cons (car s) (gen-pslot (if (meta-model:foreign-key-p model (car s))
- 'ucw::foreign-key
- (cadr s))
- (string (car s)) (car s))))
- (meta-model:list-slot-types model))
- (mapcar #'(lambda (s) (cons s (append (gen-pslot 'ucw::has-many (string s) s) `(:presentation (make-presentation ,model :type :one-line)))))
- (meta-model:list-has-many model))))
-
-(defmethod set-default-attributes ((model t))
- (mapcar #'(lambda (x)
- (setf (find-attribute model (car x)) (cdr x)))
- (default-attributes model)))
-
-
-(defcomponent mewa-object-presentation (mewa ucw:object-presentation) ())
-
-(defcomponent mewa-list-presentation (mewa ucw:list-presentation)
- ((it.bese.ucw::instances :accessor instances :initarg :instances :initform nil)
- (instance :accessor instance))) ;to make make-presentation happy
-
-(defmethod get-all-instances ((self mewa-list-presentation))
- (instances self))
-
-
-
-
-(defmethod initialize-slots ((self mewa))
- (when (use-instance-class-p self)
- (setf (classes self)
- (append (find-instance-classes self)
- (classes self))))
- (setf (slots self) (find-slot-presentations self)))
-
-
-(defmethod render-on :around ((res response) (self mewa))
- (unless (slot-value self 'initializedp)
- (initialize-slots self))
- (setf (slot-value self 'initializedp) t)
- (call-next-method))
-
-
-(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 (second a) (plist-union initargs (cddr a)))))
- (setf (slot-value i 'instance) object)
- i))
-
-(defmethod call-component :before ((from standard-component) (to mewa))
- (unless (slot-value to 'initializedp)
- (initialize-slots to))
- (setf (slot-value to 'initializedp) t)
- (setf (slots to) (mapcar #'(lambda (x) (prog2
- (setf (component.place x) (component.place from))
- x))
- (slots to))))
-
-(defmacro call-presentation (object &rest args)
- `(present-object ,object :presentation (make-presentation ,object ,@args)))
\ No newline at end of file
+(declaim (optimize (speed 2) (space 3) (safety 0)))
+
+(in-package :lisp-on-lines)
+
+(defparameter *default-type* :ucw)
+
+;;;; I think these are unused now
+(defmethod perform-set-attributes ((occurence-name t) definitions)
+ (dolist (def definitions)
+ (funcall #'set-attribute occurence-name (first def) (rest def))))
+
+(defmethod perform-set-attribute-properties ((occurence-name t) definitions)
+ (dolist (def definitions)
+ (funcall #'set-attribute-properties occurence-name (car def) (cdr def))))
+
+;;;; PLIST Utilities.
+
+(defun plist-nunion (new-props plist)
+ "Destructive Merge of plists. PLIST is modified and returned.
+NEW-PROPS is merged into PLIST such that any properties
+in both PLIST and NEW-PROPS get the value in NEW-PROPS.
+The other properties in PLIST are left untouched."
+ (loop for cons on new-props by #'cddr
+ do (setf (getf plist (first cons)) (second cons))
+ finally (return plist))
+ plist)
+
+(defun plist-union (new-props plist)
+ "Non-destructive version of plist-nunion"
+ (plist-nunion new-props (copy-list plist)))
+
+
+;;;; * Occurences
+
+(defvar *occurence-map* (make-hash-table)
+ "Presentations are created 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 ()
+ ((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)))))
+
+
+;;;; * Attributes
+
+(define-layered-class
+ standard-attribute ()
+ ((name :layered-accessor attribute.name :initarg :name :initform "attribute")
+ (type :layered-accessor attribute.type :initarg :type :initform t :type symbol)
+ (properties :layered-accessor attribute.properties :initarg :properties :initform nil))
+ (: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))
+ (properties (cdr (assoc :default-properties args))))
+ `(progn
+
+ (define-layered-class
+ ;;;; TODO: fix the naive way of making sure s-a is a superclass
+ ,name ,(or supers '(standard-attribute))
+ ,slots
+ #+ (or) ,@ (cdr args)
+ (:default-initargs :properties (list ,@properties)))
+ (defmethod find-attribute-class-for-type ((type (eql ',type)))
+ ',name))))
+
+(defmethod print-object ((self standard-attribute) stream)
+ (print-unreadable-object (self stream :type t)
+ (with-slots (name type) self
+ (format stream "~A ~A" name type))))
+
+(define-layered-class
+ presentation-attribute (standard-attribute)
+ ()
+ (:documentation "Presentation Attributes are used to display objects
+using the attributes defined in an occurence. Presentation Attributes are always named using keywords."))
+
+(defun clear-attributes (name)
+ "removes all attributes from an occurance"
+ (clear-occurence (find-occurence name)))
+
+(defmethod find-attribute-class-for-type (type)
+ nil)
+
+(defmethod find-attribute-class-for-name (name)
+ "presentation attributes are named using keywords"
+ (if (keywordp name)
+ 'presentation-attribute
+ 'standard-attribute))
+
+(defun make-attribute (&key name type properties)
+ (let ((i (make-instance (or (find-attribute-class-for-type type)
+ (find-attribute-class-for-name name))
+ :name name :type type)))
+ (setf (attribute.properties i)
+ (plist-union properties (attribute.properties i)))
+ i))
+
+(defmethod ensure-attribute ((occurence standard-occurence) name type properties)
+ "Creates an attribute in the given occurence"
+ (setf (gethash name (attribute-map occurence))
+ (make-attribute :name name :type type :properties properties)))
+
+(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 name type properties)
+ (ensure-attribute
+ (find-occurence occurence-name)
+ name
+ type
+ properties))
+
+;;;; 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)
+ "Returns the ATTRIBUTE named by ATTRIBUTE-NAME in OCCURANCE-name"
+ (find-attribute (find-occurence occurence-name) attribute-name))
+
+(defmethod (setf find-attribute) ((def list) occurence-name attribute-name)
+ (ensure-attribute occurence-name attribute-name (first def) (rest def)))
+
+(defmethod set-attribute (occurence-name attribute-name definition &key (inherit t))
+ (let ((att (find-attribute occurence-name attribute-name)))
+ (setf (find-attribute occurence-name attribute-name)
+ (if (and att inherit)
+ (cons (car definition)
+ (plist-union (cdr definition)
+ (attribute.properties att)))
+ definition))))
+
+(defmethod set-attribute-properties ((occurence-name t) attribute properties)
+ (let ((a (find-attribute occurence-name attribute)))
+ (if a
+ (setf (attribute.properties a) (plist-nunion properties (attribute.properties a)))
+ (error "Attribute ~A does not exist" attribute))))
+
+(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 occurence-name name args))
+ ((not (null type))
+ ;;set the type as well
+ (set-attribute occurence-name name (cons type args)))))))
+
+(defmacro define-attributes (occurence-names &body attribute-definitions)
+ `(progn
+ ,@(loop for occurence-name in occurence-names
+ collect `(perform-define-attributes (quote ,occurence-name) (quote ,attribute-definitions)))))
+
+
+(defmethod setter (attribute)
+ (warn "Setting ~A in ~A" attribute *context*)
+ (let ((setter (getf (attribute.properties attribute) :setter))
+ (slot-name (getf (attribute.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))))))
+
+(defmethod getter (attribute)
+ (let ((getter (getf (attribute.properties attribute) :getter))
+ (slot-name (getf (attribute.properties attribute) :slot-name)))
+ (cond (getter
+ getter)
+ (slot-name
+ #'(lambda (object)
+ (when (slot-boundp object slot-name)
+ (slot-value object slot-name)))))))
+
+
+(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))
+ (funcall (getter attribute) instance))
+
+(define-layered-function (setf attribute-value) (value instance attribute))
+
+(define-layered-method (setf attribute-value) (value instance (attribute standard-attribute))
+ (funcall (setter attribute) value instance))
+
+
+;;;; ** Default Attributes
+
+
+;;;; The default mewa class contains the types use as defaults.
+;;;; maps meta-model slot-types to slot-presentation
+
+(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)
+ (number mewa-currency)
+ (integer mewa-integer)
+ (currency mewa-currency)
+ (clsql:generalized-boolean mewa-boolean)
+ (foreign-key foreign-key)
+ (: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-presentation-attributes (occurence-name)
+ (loop for att in (find-all-attributes occurence-name)
+ when (typep att 'presentation-attribute)
+ collect att))
+
+(defun attribute-to-definition (attribute)
+ (nconc (list (attribute.name attribute)
+ (attribute.type attribute))
+ (attribute.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))
+ (possible-default (find-attribute *default-attributes-class-name* type))
+ (real-default (find-attribute 'default type)))
+ (cond
+ (possible-default
+ (attribute.type possible-default))
+ (real-default
+ (attribute.type real-default))
+ (t type))))
+
+(defun gen-presentation-slots (instance)
+ (mapcar #'(lambda (x) (gen-pslot (cadr x)
+ (string (car x))
+ (car x)))
+ (meta-model:list-slot-types instance)))
+
+
+(defun gen-pslot (type label slot-name)
+ (copy-list `(,(gen-ptype type)
+ :label ,label
+ :slot-name ,slot-name)))
+
+
+
+;;;presentations
+(defcomponent mewa ()
+ ((instance :accessor instance :initarg :instance)
+ (attributes
+ :initarg :attributes
+ :accessor attributes
+ :initform nil)
+ (attributes-getter
+ :accessor attributes-getter
+ :initform #'get-attributes
+ :initarg :attributes-getter)
+ (attribute-slot-map
+ :accessor attribute-slot-map
+ :initform nil)
+ (global-properties
+ :initarg :global-properties
+ :accessor global-properties
+ :initform nil)
+ (classes
+ :initarg :classes
+ :accessor classes
+ :initform nil)
+ (use-instance-class-p
+ :initarg :use-instance-class-p
+ :accessor use-instance-class-p
+ :initform t)
+ (initializedp :initform nil)
+ (modifiedp :accessor modifiedp :initform nil :initarg :modifiedp)
+ (modifications :accessor modifications :initform nil)))
+
+
+(defmethod attributes :around ((self mewa))
+ (let ((a (call-next-method)))
+ (or a (funcall (attributes-getter self) self))))
+
+(defgeneric get-attributes (mewa))
+
+(defmethod get-attributes ((self mewa))
+ (if (instance self)
+ (append (meta-model:list-slots (instance self))
+ (meta-model:list-has-many (instance self)))
+ nil))
+
+(defmethod find-instance-classes ((self mewa))
+ (mapcar #'class-name
+ (it.bese.arnesi.mopp:compute-class-precedence-list (class-of (instance self)))))
+
+(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 (attribute.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))))
+
+ (cons (attribute.name attribute) (apply #'make-instance
+ class-name
+ (append (plist-nunion
+ plist
+ (plist-union
+ (global-properties parent-presentation)
+ (attribute.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))
+ (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) (funcall a self))
+ (find-applicable-attributes self)))
+
+(defmethod find-attribute-slot ((self mewa) (attribute symbol))
+ (cdr (assoc attribute (attribute-slot-map self))))
+
+(defmethod initialize-slots ((self mewa))
+ (when (instance self)
+ (when (use-instance-class-p self)
+ (setf (classes self)
+ (append (find-instance-classes self)
+ (classes self))))
+ (setf (attribute-slot-map self) (find-slot-presentations self))
+ (setf (slots self) (mapcar #'(lambda (x)(cdr x)) (attribute-slot-map self )))))
+
+
+(defmethod make-presentation ((object t) &key (type :viewer) (initargs nil))
+ ;(warn "Initargs : ~A" initargs)
+ (let* ((a (find-attribute object type))
+ (i (apply #'make-instance
+ (if a
+ (attribute.type a)
+ type)
+ (plist-union initargs (when a
+ (attribute.properties a))))))
+
+ (setf (slot-value i 'instance) object)
+ (initialize-slots i)
+ (setf (slot-value i 'initializedp) t)
+ i))
+
+(defmethod make-presentation ((list list) &key (type :listing) (initargs nil))
+ (let ((args (append
+ `(:type ,type)
+ `(:initargs
+ (:instances ,list
+ ,@initargs)))))
+
+ (apply #'make-presentation (car list) args)))
+
+(defmethod initialize-slots-place ((place ucw::place) (mewa mewa))
+ (setf (slots mewa) (mapcar #'(lambda (x)
+ (prog1 x
+ (setf (component.place x) place)))
+ (slots mewa))))
+
+(arnesi:defmethod/cc call-component :before ((from standard-component) (to mewa))
+ (unless (slot-value to 'initializedp)
+ (initialize-slots to))
+ (setf (slot-value to 'initializedp) t)
+ (initialize-slots-place (component.place from) to)
+ to)
+
+
+
+(defmacro call-presentation (object &rest args)
+ `(present-object ,object :presentation (make-presentation ,object ,@args)))
+
+
+(defcomponent about-dialog (option-dialog)
+ ((body :initarg :body)))
+
+(defmethod render-on ((res response) (self about-dialog))
+ (call-next-method)
+ (render-on res (slot-value self 'body)))
+
+
+(defaction cancel-save-instance ((self mewa))
+ (cond
+ ((meta-model::persistentp (instance self))
+ (meta-model::update-instance-from-records (instance self))
+ (answer self))
+ (t (answer nil))))
+
+(defaction save-instance ((self mewa))
+ (meta-model:sync-instance (instance self))
+ (setf (modifiedp self) nil)
+ (answer self))
+
+(defmethod confirm-sync-instance ((self mewa))
+ nil)
+
+(defaction ensure-instance-sync ((self mewa))
+ (when (modifiedp self)
+ (if nil
+ (let ((message (format nil "Record has been modified, Do you wish to save the changes?")))
+ (case (call 'about-dialog
+ :body (make-presentation (instance self)
+ :type :viewer)
+ :message message
+ :options '((:save . "Save changes to Database")
+ (:cancel . "Cancel all changes")))
+ (:cancel
+ (cancel-save-instance self))
+ (:save
+ (save-instance self))))
+ (save-instance self))))
+
+(defaction sync-and-answer ((self mewa))
+ (ensure-instance-sync self)
+ (answer (instance self)))
+
+(defaction ok ((self mewa) &optional arg)
+ "Returns the component if it has not been modified. if it has been, prompt user to save or cancel"
+ ;(declare (ignore arg))
+ (sync-and-answer self))
+
+(defmethod (setf presentation-slot-value) :around (value (slot slot-presentation) instance)
+ (let* ((old (prog1
+ (presentation-slot-value slot instance)
+ (call-next-method)))
+ (new (presentation-slot-value slot instance)))
+
+ (unless (equal new old )
+ (let ((self (ucw::parent slot)))
+ (setf (modifiedp self) instance
+ (modifications self) (append (list new old value slot instance) (modifications self)))))))
+
+
+
+
+
+
+
+;; This software is Copyright (c) Drew Crampsie, 2004-2005.
+;; You are granted the rights to distribute
+;; and use this software as governed by the terms
+;; of the Lisp Lesser GNU Public License
+;; (http://opensource.franz.com/preamble.html),
+;; known as the LLGPL.
HCoop / clinton / lisp-on-lines.git / blobdiff