src/mewa/slot-presentations.lisp

   1 (in-package :mewa)
   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
  14 ;;;; ** Textarea Slot Presentation
  15
  16 (defslot-presentation text-slot-presentation ()
  17   ((rows :initarg :rows :accessor rows :initform 25)
  18    (columns :initarg :columns :accessor columns :initform 40)
  19    (escape-html-p :initarg :escape-html-p :accessor escape-html-p :initform nil))
  20   (:type-name text))
  21
  22 (defmethod present-slot ((slot text-slot-presentation) instance)
  23   (if (editablep slot)
  24       (<ucw:textarea :accessor (presentation-slot-value slot instance)
  25                      :rows (rows slot)
  26                      :cols (columns slot))
  27       (if (escape-html-p slot)
  28           (<:as-html (presentation-slot-value slot instance))
  29           (<:as-is (presentation-slot-value slot instance)))))
  30
  31
  32 (defcomponent mewa-slot-presentation ()
  33   ((slot-name :accessor slot-name
  34               :initarg :slot-name
  35               :documentation
  36               "The name of the slot being accessed")
  37    (fill-gaps-only-p :accessor fill-gaps-only-p
  38                      :initarg :fill-gaps-only-p
  39                      :initform nil
  40                      :documentation
  41                      "When nil, the instance is syncronised with the database.
  42 When T, only the default value for primary keys and the joins are updated.")
  43    (show-label-p :accessor show-label-p :initarg :show-label-p :initform t))
  44   (:documentation "The superclass of all Mewa slot presentations"))
  45
  46 ;;;; this has to be in the eval when i would think
  47 (eval-when (:compile-toplevel :load-toplevel :execute)
  48   (defun generate-slot-presentation-definition-for-type (type)
  49     (let* ((u-name (intern (format nil "~A-SLOT-PRESENTATION" type)))
  50            (sp-name (intern (format nil "MEWA-~A" u-name)))
  51            (t-name (intern (format nil "MEWA-~A" type))))
  52       `(defslot-presentation ,sp-name (,u-name mewa-slot-presentation)
  53         ()
  54         (:type-name ,t-name)))))
  55
  56 (defmacro define-base-mewa-presentations (&body types)
  57   "Define the mewa-slot-presentations by subclassing the base UCW ones"
  58     `(progn ,@(mapcar #'generate-slot-presentation-definition-for-type
  59                       types)))
  60
  61 ;;;then actually define the base presentations :
  62 (define-base-mewa-presentations
  63   boolean
  64   string
  65   number
  66   integer
  67   currency)
  68
  69 (defslot-presentation clsql-wall-time-slot-presentation (mewa-relation-slot-presentation)
  70        ((input-id :accessor input-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+))
  71         (trigger-id :accessor trigger-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+)))
  72        (:type-name clsql-sys:wall-time))
  73
  74 (defmethod presentation-slot-value ((slot clsql-wall-time-slot-presentation) instance)
  75   (let ((date (call-next-method)))
  76     (when date (multiple-value-bind (y m d) (clsql:time-ymd date)
  77       (format nil "~a/~a/~a" m d y)))))
  78
  79 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
  80   (let ((new-time (clsql:parse-date-time (remove #\Space value)))
  81         (old-time (when (slot-boundp instance (slot-name slot))
  82                     (slot-value instance (slot-name slot)))))
  83     (unless (or (eql old-time new-time)
  84                 (when (and new-time old-time)
  85                   (equal :equal (clsql:time-compare new-time old-time))))
  86     (setf (presentation-slot-value slot instance) new-time ))))
  87
  88 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
  89   (concatenate 'string (call-next-method) "  (m/d/y)"))
  90
  91 (defmethod present-slot ((slot clsql-wall-time-slot-presentation) instance)
  92   (let ((date (presentation-slot-value slot instance)))
  93     (if (and date (not (editablep slot)))
  94         (<:as-html date))
  95     (when (editablep slot)
  96       (<ucw:input :accessor (presentation-slot-value slot instance) :id (input-id slot) :style "display:inline")
  97       (<:button :id (trigger-id slot) (<:as-html "[...]"))
  98       (<:script :type "text/javascript"
  99                 (<:as-is (format nil "
 100
 101 Calendar.setup({
 102  inputField     :    \"~a\",
 103  button         :    \"~a\",
 104  ifFormat       :    \"%m/%d/%Y\" });" (input-id slot) (trigger-id slot)))))))
 105
 106 (defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
 107   ((foreign-instance :accessor foreign-instance)
 108    (linkedp :accessor linkedp :initarg :linkedp :initform t)
 109    (creator :accessor creator :initarg :creator :initform :editor)
 110    (new-instance :accessor new-instance :initform nil))
 111   (:type-name relation))
 112
 113 (defaction search-records ((slot mewa-relation-slot-presentation) instance)
 114   (multiple-value-bindf (finstance foreign-slot-name)
 115       (meta-model:explode-foreign-key instance (slot-name slot))
 116     (let ((new-instance (new-instance self)))
 117       (unless new-instance
 118         (setf (new-instance self)
 119               (call-component
 120                (ucw::parent slot)
 121                (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
 122                                   'mewa::mewa-presentation-search)
 123                               :search-presentation
 124                               (mewa:make-presentation finstance
 125                                                       :type :search-presentation)
 126                               :list-presentation
 127                               (mewa:make-presentation finstance
 128                                                       :type :listing)))))
 129       (sync-foreign-instance slot new-instance))))
 130
 131 (defmethod sync-foreign-instance ((slot mewa-relation-slot-presentation) foreign-instance)
 132   (let ((instance (instance (ucw::parent slot))))
 133     (multiple-value-bind (foo f-slot-name)
 134         (meta-model:explode-foreign-key instance (slot-name slot))
 135       (setf (slot-value instance (slot-name slot)) (slot-value foreign-instance f-slot-name))
 136       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p slot)))))
 137
 138
 139 (defaction create-record-on-foreign-key ((slot mewa-relation-slot-presentation) instance)
 140   (multiple-value-bindf (finstance foreign-slot-name)
 141       (meta-model:explode-foreign-key instance (slot-name slot))
 142     (let ((new-instance
 143            (call-component
 144             (ucw::parent slot)
 145             (mewa:make-presentation finstance :type (creator self)))))
 146
 147       ;;;; TODO: this next bit is due to a bad design decision.
 148       ;;;; Components should always have (ok) return self, but somewhere
 149       ;;;; i've made in return (instance self) sometimes, and this
 150       ;;;; bahaviour is totatlly fucked.
 151
 152      (when (typep new-instance 'mewa::mewa)
 153        (setf new-instance (instance new-instance)))
 154
 155       ;;;; sorry about that, and now back t our regular program.
 156
 157       (meta-model:sync-instance new-instance)
 158       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 159       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 160
 161
 162 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
 163  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
 164   (let* ((i (foreign-instance slot))
 165          (pres (mewa::make-presentation
 166                 i
 167                 :type :one-line
 168                 :initargs (list
 169                            :global-properties
 170                            (list :editablep nil :linkedp nil)))))
 171       (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
 172         (setf (component.place pres) (component.place (ucw::parent slot))))
 173       (when i (<ucw:render-component :component pres))))
 174
 175 (defmethod present-slot ((slot mewa-relation-slot-presentation) instance)
 176   (present-relation slot instance))
 177
 178 (defslot-presentation foreign-key-slot-presentation (mewa-relation-slot-presentation)
 179   ()
 180   (:type-name foreign-key)
 181   (:default-initargs))
 182
 183 (defaction view-instance ((self component) instance &rest initargs)
 184   (call-component (ucw::parent self) (apply #'mewa:make-presentation instance initargs))
 185   ;; the viewed instance could have been changed/deleted, so we sync this instance
 186   (meta-model:sync-instance (instance (ucw::parent self))))
 187
 188
 189 (defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)
 190   (setf (foreign-instance slot)
 191         (when (presentation-slot-value slot instance)
 192           (meta-model:explode-foreign-key instance (slot-name slot))))
 193   (flet ((render () (when (foreign-instance slot)(call-next-method))))
 194     (if (slot-boundp slot 'ucw::place)
 195         (cond
 196           ((editablep slot)
 197            (<ucw:submit :action  (search-records slot instance) :value "Search" :style "display:inline")
 198            (<ucw:submit :action  (create-record-on-foreign-key slot instance) :value "Add New" :style "display:inline"))
 199           ((linkedp slot)
 200            (<ucw:a :action (view-instance slot (foreign-instance slot))
 201                    (render)))
 202           (t
 203            (render)))
 204         ;; presentation is used only for rendering
 205         (render))))
 206
 207
 208
 209
 210 ;;;; HAS MANY
 211 (defslot-presentation has-many-slot-presentation (mewa-relation-slot-presentation)
 212   ((add-new-label :accessor add-new-label :initarg :add-new-label :initform "Add New"))
 213   (:type-name has-many))
 214
 215 (defaction add-to-has-many ((slot has-many-slot-presentation) instance)
 216   ;; if the instance is not stored we must make sure to mark it stored now!
 217   (unless (mewa::instance-is-stored-p instance)
 218     (setf (mewa::modifiedp (ucw::parent self)) t))
 219   ;; sync up the instance
 220   ;;(mewa:ensure-instance-sync (parent slot))
 221   (meta-model:sync-instance (instance (ucw::parent slot)))
 222
 223   (multiple-value-bindf (class home foreign)
 224       (meta-model:explode-has-many instance (slot-name slot))
 225     (let ((new (make-instance class)))
 226       (setf (slot-value new foreign) (slot-value instance home))
 227       (meta-model:sync-instance new :fill-gaps-only-p (fill-gaps-only-p self))
 228       (call-component (ucw::parent slot)  (mewa:make-presentation new :type (creator slot)))
 229       (meta-model:sync-instance instance))))
 230
 231 (defmethod present-slot ((slot has-many-slot-presentation) instance)
 232   (when (slot-boundp slot 'ucw::place)
 233     (<ucw:submit :action (add-to-has-many slot instance) :value (add-new-label slot)))
 234   (let* ((i (get-foreign-instances slot instance))
 235          (presentation (and i (make-presentation (car  i) :type :one-line))))
 236     (when i
 237       (flet ((linker (i string)
 238                (<ucw:a
 239                 :action (view-instance slot i
 240                                        :initargs
 241                                        `(:global-properties ,
 242                                          (list
 243                                           :linkedp t
 244                                           :editablep nil)))
 245                 (<:as-html string))))
 246         (<:table
 247          (<:tr
 248           (<:th)                        ;empty col for (view) link
 249           (dolist (s (slots presentation))
 250             (<:th (<:as-html  (label s)))))
 251          (dolist (s i)
 252            (let ((s s))
 253              (setf (foreign-instance slot) s)
 254              (when (slot-boundp slot 'ucw::place)
 255                (<:tr
 256                 (<:td (linker s " (view) "))
 257                 (dolist (p (slots (make-presentation s :type :one-line
 258                                                      :initargs
 259                                                      '(:global-properties
 260                                                        (:editablep nil)))))
 261                   (<:td
 262
 263                    (present-slot p s))))))))))))
 264
 265
 266 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
 267   (slot-value instance (slot-name slot)))
 268
 269 (defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
 270   (get-foreign-instances slot instance))
 271
 272 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
 273   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
 274    (current :accessor current :initform 0)
 275    (len :accessor len )
 276    (instances :accessor instances))
 277   (:type-name has-very-many))
 278
 279 (defmethod list-next ((slot has-very-many-slot-presentation))
 280   (setf (current slot) (incf (current slot) (number-to-display slot)))
 281   (when (< (len slot) (current slot))
 282     (setf (current slot) (- (number-to-display slot) (len slot)))))
 283
 284 (defmethod list-prev ((slot has-very-many-slot-presentation))
 285   (setf (current slot) (decf (current slot) (number-to-display slot)))
 286   (when  (> 0 (current slot))
 287     ;;what to do here is open to debate
 288     (setf (current slot) (- (len slot)(number-to-display slot)  ))))
 289
 290
 291 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
 292   ;;(<:as-html "isance: " instance)
 293   (if (slot-boundp slot 'ucw::place)
 294       (progn
 295         (<ucw:a :action (list-prev slot) (<:as-html "<<"))
 296         (let ((self (ucw::parent slot)))
 297           (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
 298                 (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
 299         (<ucw:a :action (list-next slot) (<:as-html ">>"))
 300         (call-next-method)
 301         (<:as-html "total :" (len slot)))
 302       (call-next-method)))
 303
 304 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
 305   (let ((f (call-next-method)))
 306     (setf (len slot) (length f))
 307     (setf (instances slot) f)
 308   (loop for cons on (nthcdr (current slot) f)
 309                    for i from 0 upto (number-to-display slot)
 310                    collect (car cons))))
 311
 312 (defslot-presentation has-a-slot-presentation (one-of-presentation)
 313   ((key :initarg :key :accessor key))
 314   (:type-name has-a))
 315
 316 (defmethod get-foreign-slot-value ((slot has-a-slot-presentation) (object t) (slot-name t))
 317   (slot-value object slot-name))
 318
 319 (defmethod present-slot ((slot has-a-slot-presentation) instance)
 320       (<:as-html (presentation-slot-value slot instance))
 321   (if (editablep slot)
 322       (<ucw:select :accessor (presentation-slot-value slot instance) :test #'equalp
 323         (when (allow-nil-p slot)
 324           (<ucw:option :value nil (<:as-html (none-label slot))))
 325         (dolist (option (get-foreign-instances (presentation slot) instance))
 326           (setf (instance (presentation slot)) option)
 327           (<ucw:option :value (get-foreign-slot-value slot option (key slot)) (present (presentation slot)))))
 328       (if (presentation-slot-value slot instance)
 329           (progn
 330             (setf (instance (presentation slot)) (presentation-slot-value slot instance))
 331             (present (presentation slot)))
 332           (<:as-html "--"))))
 333
 334
 335
 336
 337
 338
 339