src/mewa/slot-presentations.lisp

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