src/mewa/slot-presentations.lisp

   1 (in-package :it.bese.ucw)
   2
   3 (defun multiple-value-funcall->list (function &rest args)
   4                    (multiple-value-call #'list (apply function args)))
   5
   6 (defmacro multiple-value-bindf (vars form &body body)
   7                    `(destructuring-bind ,vars
   8                      (multiple-value-funcall->list #',(car form) ,@(cdr form))
   9                      ,@body))
  10
  11 (defcomponent mewa-slot-presentation ()
  12   ((slot-name :accessor slot-name
  13               :initarg :slot-name
  14               :documentation
  15               "The name of the slot being accessed")
  16    (fill-gaps-only-p :accessor fill-gaps-only-p
  17                      :initarg :fill-gaps-only-p
  18                      :initform nil
  19                      :documentation
  20                      "When nil, the instance is syncronised with the database.
  21 When T, only the default value for primary keys and the joins are updated."))
  22   (:documentation "The superclass of all Mewa slot presentations"))
  23
  24 ;;;; this has to be in the eval when i would think
  25 (eval-when (:compile-toplevel :load-toplevel :execute)
  26   (defun generate-slot-presentation-definition-for-type (type)
  27     (let* ((u-name (intern (format nil "~A-SLOT-PRESENTATION" type)))
  28            (sp-name (intern (format nil "MEWA-~A" u-name)))
  29            (t-name (intern (format nil "MEWA-~A" type))))
  30       `(defslot-presentation ,sp-name (,u-name mewa-slot-presentation)
  31         ()
  32         (:type-name ,t-name)))))
  33
  34 (defmacro define-base-mewa-presentations (&body types)
  35   "Define the mewa-slot-presentations by subclassing the base UCW ones"
  36     `(progn ,@(mapcar #'generate-slot-presentation-definition-for-type
  37                       types)))
  38
  39 ;;;then actually define the base presentations :
  40 (define-base-mewa-presentations
  41   boolean
  42   string
  43   number
  44   integer
  45   currency)
  46
  47
  48 (defslot-presentation clsql-wall-time-slot-presentation (mewa-relation-slot-presentation)
  49        ()
  50        (:type-name clsql-sys:wall-time))
  51
  52 (defmethod presentation-slot-value ((slot clsql-wall-time-slot-presentation) instance)
  53   (let ((date (call-next-method)))
  54     (when date (multiple-value-bind (y m d) (clsql:time-ymd date)
  55       (format nil "~a/~a/~a" m d y)))))
  56
  57 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
  58   (let ((new-time (clsql:parse-date-time (remove #\Space value)))
  59         (old-time (when (slot-boundp instance (slot-name slot))
  60                     (slot-value instance (slot-name slot)))))
  61     (unless (or (eql old-time new-time)
  62                 (when (and new-time old-time)
  63                   (equal :equal (clsql:time-compare new-time old-time))))
  64     (setf (presentation-slot-value slot instance) new-time ))))
  65
  66 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
  67   (concatenate 'string (call-next-method) "  (mm/dd/yyyy)"))
  68
  69 (defmethod present-slot ((slot clsql-wall-time-slot-presentation) instance)
  70   (let ((date (presentation-slot-value slot instance))
  71         (input-id (string (gensym))))
  72     (if (and date (not (editablep slot)))
  73         (<:span (<:as-html date)))
  74     (when (editablep slot)
  75       (<ucw:input :accessor (presentation-slot-value slot instance) :id input-id)
  76       (<:script :type "text/javascript"
  77                 (<:as-is (format nil "
  78       Calendar.setup({
  79         inputField     :    \"~a\",
  80         ifFormat       :    \"%m/%d/%Y\",
  81       });" input-id))))))
  82
  83 (defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
  84   ((foreign-instance :accessor foreign-instance)
  85    (linkedp :accessor linkedp :initarg :linkedp :initform t))
  86   (:type-name relation))
  87
  88 (defun get-fkey-data (instance slot-name)
  89   "ugly workaround b/c UCW does not like M-V-B"
  90   (multiple-value-bind (finstance foreign-slot-name)
  91       (meta-model:explode-foreign-key instance slot-name)
  92     (cons finstance foreign-slot-name)))
  93
  94 (defaction search-records ((slot mewa-relation-slot-presentation) instance)
  95   (multiple-value-bindf (finstance foreign-slot-name)
  96       (meta-model:explode-foreign-key instance (slot-name slot))
  97     (let ((new-instance
  98             (call-component
  99              (parent slot)
 100              (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
 101                                 'mewa::mewa-presentation-search)
 102                             :search-presentation
 103                             (mewa:make-presentation finstance
 104                                                     :type :search-presentation)
 105                             :list-presentation
 106                             (mewa:make-presentation finstance
 107                                                     :type :listing)))))
 108       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 109       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 110
 111 (defaction create-record ((slot mewa-relation-slot-presentation) instance)
 112   (multiple-value-bindf (finstance foreign-slot-name)
 113       (meta-model:explode-foreign-key instance (slot-name slot))
 114     (let ((new-instance
 115            (call-component
 116             (parent slot)
 117             (mewa:make-presentation finstance :type :editor))))
 118       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 119       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 120
 121 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
 122  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
 123   (let* ((i (foreign-instance slot))
 124          (pres (mewa::make-presentation
 125                 i
 126                 :type :one-line
 127                 :initargs (list
 128                            :global-properties
 129                            (list :editablep nil :linkedp nil)))))
 130       (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
 131         (setf (component.place pres) (component.place (ucw::parent slot))))
 132       (when i (<ucw:render-component :component pres))))
 133
 134
 135
 136 (defmethod present-slot ((slot mewa-relation-slot-presentation) instance)
 137   (present-relation slot instance))
 138
 139 (defslot-presentation foreign-key-slot-presentation (mewa-relation-slot-presentation)
 140   ()
 141   (:type-name foreign-key)
 142   (:default-initargs))
 143
 144 (defaction view-instance ((self component) instance &rest initargs)
 145   (call-component (parent self) (apply #'mewa:make-presentation instance initargs))
 146   ;; the viewed instance could have been changed/deleted, so we sync this instance
 147   (meta-model:sync-instance (instance (parent self))))
 148
 149
 150 (defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)
 151   (setf (foreign-instance slot)
 152         (when (presentation-slot-value slot instance)
 153           (meta-model:explode-foreign-key instance (slot-name slot))))
 154
 155   (flet ((render () (when (foreign-instance slot)(call-next-method))))
 156     (if (slot-boundp slot 'place)
 157         (cond
 158           ((editablep slot)
 159            (render)
 160            (<ucw:submit :action  (search-records slot instance) :value "Search" :style "display:inline")
 161            (<ucw:submit :action  (create-record slot instance) :value "Add New" :style "display:inline"))
 162           ((linkedp slot)
 163            (<ucw:a :action (view-instance slot (foreign-instance slot))
 164                    (render)))
 165           (t
 166            (render)))
 167         ;; presentation is used only for rendering
 168         (render))))
 169
 170 ;;;; HAS MANY
 171 (defslot-presentation has-many-slot-presentation (mewa-relation-slot-presentation)
 172   ((add-new-label :accessor add-new-label :initarg :add-new-label :initform "Add New"))
 173   (:type-name has-many))
 174
 175
 176 (defaction add-to-has-many ((slot has-many-slot-presentation) instance)
 177   (mewa:ensure-instance-sync (parent slot))
 178   (multiple-value-bindf (class home foreign)
 179       (meta-model:explode-has-many instance (slot-name slot))
 180     (let ((new (make-instance class)))
 181       (setf (slot-value new foreign) (slot-value instance home))
 182       (meta-model:sync-instance new :fill-gaps-only-p (fill-gaps-only-p self))
 183       (call-component (parent slot) (mewa:make-presentation new :type :editor))
 184       (meta-model:sync-instance instance))))
 185
 186 (defmethod present-slot ((slot has-many-slot-presentation) instance)
 187   (when (slot-boundp slot 'place)
 188     (<ucw:submit :action (add-to-has-many slot instance) :value (add-new-label slot)))
 189   (let ((i (get-foreign-instances slot instance)))
 190
 191     (<:ul
 192      (dolist (s i)
 193        (let ((s s))
 194          (setf (foreign-instance slot) s)
 195          (when (slot-boundp slot 'place)
 196            (<ucw:a :action (view-instance slot s :initargs `(:global-properties ,(list :linkedp t :editablep nil)))
 197                  (<:li   (setf (linkedp slot) nil)
 198                          (present-relation slot instance)))))))))
 199
 200
 201 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
 202   (slot-value instance (slot-name slot)))
 203
 204 (defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
 205   (get-foreign-instances slot instance))
 206
 207 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
 208   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
 209    (current :accessor current :initform 0)
 210    (len :accessor len )
 211    (instances :accessor instances))
 212
 213   (:type-name has-very-many))
 214
 215 (defmethod list-next ((slot has-very-many-slot-presentation))
 216   (setf (current slot) (incf (current slot) (number-to-display slot)))
 217   (when (< (len slot) (current slot))
 218     (setf (current slot) (- (number-to-display slot) (len slot)))))
 219
 220 (defmethod list-prev ((slot has-very-many-slot-presentation))
 221   (setf (current slot) (decf (current slot) (number-to-display slot)))
 222   (when  (> 0 (current slot))
 223     ;;what to do here is open to debate
 224     (setf (current slot) (- (len slot)(number-to-display slot)  ))))
 225
 226
 227 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
 228   ;;(<:as-html "isance: " instance)
 229   (if (slot-boundp slot 'place)
 230       (progn
 231         (<ucw:a :action (list-prev slot) (<:as-html "<<"))
 232         (let ((self (parent slot)))
 233           (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
 234                 (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
 235         (<ucw:a :action (list-next slot) (<:as-html ">>"))
 236         (call-next-method)
 237         (<:as-html "total :" (len slot)))
 238       (call-next-method)))
 239
 240 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
 241   (let ((f (call-next-method)))
 242     (setf (len slot) (length f))
 243     (setf (instances slot) f)
 244   (loop for cons on (nthcdr (current slot) f)
 245                    for i from 0 upto (number-to-display slot)
 246                    collect (car cons))))
 247
 248 (defslot-presentation has-a-slot-presentation (one-of-presentation)
 249   ((key :initarg :key :accessor key))
 250   (:type-name has-a))
 251
 252 (defmethod get-foreign-slot-value ((slot has-a-slot-presentation) (object t) (slot-name t))
 253   (slot-value object slot-name))
 254
 255 (defmethod present-slot ((slot has-a-slot-presentation) instance)
 256       (<:as-html (presentation-slot-value slot instance))
 257   (if (editablep slot)
 258       (<ucw:select :accessor (presentation-slot-value slot instance) :test #'equalp
 259         (when (allow-nil-p slot)
 260           (<ucw:option :value nil (<:as-html (none-label slot))))
 261         (dolist (option (get-foreign-instances (presentation slot) instance))
 262           (setf (instance (presentation slot)) option)
 263           (<ucw:option :value (get-foreign-slot-value slot option (key slot)) (present (presentation slot)))))
 264       (if (presentation-slot-value slot instance)
 265           (progn
 266             (setf (instance (presentation slot)) (presentation-slot-value slot instance))
 267             (present (presentation slot)))
 268           (<:as-html "--"))))