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
  33 (defcomponent mewa-slot-presentation ()
  34   ((slot-name :accessor slot-name
  35               :initarg :slot-name
  36               :documentation
  37               "The name of the slot being accessed")
  38    (fill-gaps-only-p :accessor fill-gaps-only-p
  39                      :initarg :fill-gaps-only-p
  40                      :initform nil
  41                      :documentation
  42                      "When nil, the instance is syncronised with the database.
  43 When T, only the default value for primary keys and the joins are updated.")
  44    (show-label-p :accessor show-label-p :initarg :show-label-p :initform t))
  45   (:documentation "The superclass of all Mewa slot presentations"))
  46
  47 ;;;; this has to be in the eval when i would think
  48 (eval-when (:compile-toplevel :load-toplevel :execute)
  49   (defun generate-slot-presentation-definition-for-type (type)
  50     (let* ((u-name (intern (format nil "~A-SLOT-PRESENTATION" type)))
  51            (sp-name (intern (format nil "MEWA-~A" u-name)))
  52            (t-name (intern (format nil "MEWA-~A" type))))
  53       `(defslot-presentation ,sp-name (,u-name mewa-slot-presentation)
  54         ()
  55         (:type-name ,t-name)))))
  56
  57 (defmacro define-base-mewa-presentations (&body types)
  58   "Define the mewa-slot-presentations by subclassing the base UCW ones"
  59     `(progn ,@(mapcar #'generate-slot-presentation-definition-for-type
  60                       types)))
  61
  62 ;;;then actually define the base presentations :
  63 (define-base-mewa-presentations
  64   boolean
  65   string
  66   number
  67   integer
  68   currency)
  69
  70 (defslot-presentation clsql-wall-time-slot-presentation (mewa-relation-slot-presentation)
  71        ((input-id :accessor input-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+))
  72         (trigger-id :accessor trigger-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+)))
  73        (:type-name clsql-sys:wall-time))
  74
  75 (defmethod presentation-slot-value ((slot clsql-wall-time-slot-presentation) instance)
  76   (let ((date (call-next-method)))
  77     (when date (multiple-value-bind (y m d) (clsql:time-ymd date)
  78       (format nil "~a/~a/~a" m d y)))))
  79
  80 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
  81   (let ((new-time (clsql:parse-date-time (remove #\Space value)))
  82         (old-time (when (slot-boundp instance (slot-name slot))
  83                     (slot-value instance (slot-name slot)))))
  84     (unless (or (eql old-time new-time)
  85                 (when (and new-time old-time)
  86                   (equal :equal (clsql:time-compare new-time old-time))))
  87     (setf (presentation-slot-value slot instance) new-time ))))
  88
  89 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
  90   (concatenate 'string (call-next-method) "  (m/d/y)"))
  91
  92 (defmethod present-slot ((slot clsql-wall-time-slot-presentation) instance)
  93   (let ((date (presentation-slot-value slot instance)))
  94     (if (and date (not (editablep slot)))
  95         (<:as-html date))
  96     (when (editablep slot)
  97       (<ucw:input :accessor (presentation-slot-value slot instance) :id (input-id slot) :style "display:inline")
  98       (<:button :id (trigger-id slot) (<:as-html "[...]"))
  99       (<:script :type "text/javascript"
 100                 (<:as-is (format nil "
 101
 102 Calendar.setup({
 103  inputField     :    \"~a\",
 104  button         :    \"~a\",
 105  ifFormat       :    \"%m/%d/%Y\" });" (input-id slot) (trigger-id slot)))))))
 106
 107 (defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
 108   ((foreign-instance :accessor foreign-instance)
 109    (linkedp :accessor linkedp :initarg :linkedp :initform t)
 110    (creator :accessor creator :initarg :creator :initform :editor)
 111    (new-instance :accessor new-instance :initform nil))
 112   (:type-name relation))
 113
 114 (defaction search-records ((slot mewa-relation-slot-presentation) instance)
 115   (multiple-value-bindf (finstance foreign-slot-name)
 116       (meta-model:explode-foreign-key instance (slot-name slot))
 117     (let ((new-instance (new-instance self)))
 118       (unless new-instance
 119         (setf (new-instance self)
 120               (call-component
 121                (ucw::parent slot)
 122                (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
 123                                   'mewa::mewa-presentation-search)
 124                               :search-presentation
 125                               (mewa:make-presentation finstance
 126                                                       :type :search-presentation)
 127                               :list-presentation
 128                               (mewa:make-presentation finstance
 129                                                       :type :listing)))))
 130       (sync-foreign-instance slot new-instance))))
 131
 132 (defmethod sync-foreign-instance ((slot mewa-relation-slot-presentation) foreign-instance)
 133   (let ((instance (instance (ucw::parent slot))))
 134     (multiple-value-bind (foo f-slot-name)
 135         (meta-model:explode-foreign-key instance (slot-name slot))
 136       (setf (slot-value instance (slot-name slot)) (slot-value foreign-instance f-slot-name))
 137       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p slot)))))
 138
 139
 140 (defaction create-record-on-foreign-key ((slot mewa-relation-slot-presentation) instance)
 141   (multiple-value-bindf (finstance foreign-slot-name)
 142       (meta-model:explode-foreign-key instance (slot-name slot))
 143     (let ((new-instance
 144            (call-component
 145             (ucw::parent slot)
 146             (mewa:make-presentation finstance :type (creator self)))))
 147
 148       ;;;; TODO: this next bit is due to a bad design decision.
 149       ;;;; Components should always have (ok) return self, but somewhere
 150       ;;;; i've made in return (instance self) sometimes, and this
 151       ;;;; bahaviour is totatlly fucked.
 152
 153      (when (typep new-instance 'mewa::mewa)
 154        (setf new-instance (instance new-instance)))
 155
 156       ;;;; sorry about that, and now back t our regular program.
 157
 158       (meta-model:sync-instance new-instance)
 159       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 160       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 161
 162
 163 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
 164  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
 165   (let* ((i (foreign-instance slot))
 166          (pres (mewa::make-presentation
 167                 i
 168                 :type :one-line
 169                 :initargs (list
 170                            :global-properties
 171                            (list :editablep nil :linkedp nil)))))
 172       (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
 173         (setf (component.place pres) (component.place (ucw::parent slot))))
 174       (when i (<ucw:render-component :component pres))))
 175
 176
 177
 178 (defmethod present-slot ((slot mewa-relation-slot-presentation) instance)
 179   (present-relation slot instance))
 180
 181 (defslot-presentation foreign-key-slot-presentation (mewa-relation-slot-presentation)
 182   ()
 183   (:type-name foreign-key)
 184   (:default-initargs))
 185
 186 (defaction view-instance ((self component) instance &rest initargs)
 187   (call-component (ucw::parent self) (apply #'mewa:make-presentation instance initargs))
 188   ;; the viewed instance could have been changed/deleted, so we sync this instance
 189   (meta-model:sync-instance (instance (ucw::parent self))))
 190
 191
 192 (defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)
 193   (setf (foreign-instance slot)
 194         (when (presentation-slot-value slot instance)
 195           (meta-model:explode-foreign-key instance (slot-name slot))))
 196   (flet ((render () (when (foreign-instance slot)(call-next-method))))
 197     (if (slot-boundp slot 'ucw::place)
 198         (cond
 199           ((editablep slot)
 200            (<ucw:submit :action  (search-records slot instance) :value "Search" :style "display:inline")
 201            (<ucw:submit :action  (create-record-on-foreign-key slot instance) :value "Add New" :style "display:inline"))
 202           ((linkedp slot)
 203            (<ucw:a :action (view-instance slot (foreign-instance slot))
 204                    (render)))
 205           (t
 206            (render)))
 207         ;; presentation is used only for rendering
 208         (render))))
 209
 210
 211
 212
 213 ;;;; HAS MANY
 214 (defslot-presentation has-many-slot-presentation (mewa-relation-slot-presentation)
 215   ((add-new-label :accessor add-new-label :initarg :add-new-label :initform "Add New"))
 216   (:type-name has-many))
 217
 218 (defaction add-to-has-many ((slot has-many-slot-presentation) instance)
 219   ;; if the instance is not stored we must make sure to mark it stored now!
 220   (unless (mewa::instance-is-stored-p instance)
 221     (setf (mewa::modifiedp (ucw::parent self)) t))
 222   ;; sync up the instance
 223   ;;(mewa:ensure-instance-sync (parent slot))
 224   (meta-model:sync-instance (instance (ucw::parent slot)))
 225
 226   (multiple-value-bindf (class home foreign)
 227       (meta-model:explode-has-many instance (slot-name slot))
 228     (let ((new (make-instance class)))
 229       (setf (slot-value new foreign) (slot-value instance home))
 230       (meta-model:sync-instance new :fill-gaps-only-p (fill-gaps-only-p self))
 231       (call-component (ucw::parent slot)  (mewa:make-presentation new :type (creator slot)))
 232       (meta-model:sync-instance instance))))
 233
 234 (defmethod present-slot ((slot has-many-slot-presentation) instance)
 235   (when (slot-boundp slot 'ucw::place)
 236     (<ucw:submit :action (add-to-has-many slot instance) :value (add-new-label slot)))
 237   (let* ((i (get-foreign-instances slot instance))
 238          (presentation (and i (make-presentation (car  i) :type :one-line))))
 239     (when i
 240       (flet ((linker (i string)
 241                (<ucw:a
 242                 :action (view-instance slot i
 243                                        :initargs
 244                                        `(:global-properties ,
 245                                          (list
 246                                           :linkedp t
 247                                           :editablep nil)))
 248                 (<:as-html string))))
 249         (<:table
 250          (<:tr
 251           (<:th)                        ;empty col for (view) link
 252           (dolist (s (slots presentation))
 253             (<:th (<:as-html  (label s)))))
 254          (dolist (s i)
 255            (let ((s s))
 256              (setf (foreign-instance slot) s)
 257              (when (slot-boundp slot 'ucw::place)
 258                (<:tr
 259                 (<:td (linker s " (view) "))
 260                 (dolist (p (slots (make-presentation s :type :one-line
 261                                                      :initargs
 262                                                      '(:global-properties
 263                                                        (:editablep nil)))))
 264                   (<:td
 265
 266                    (present-slot p s))))))))))))
 267
 268
 269 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
 270   (slot-value instance (slot-name slot)))
 271
 272 (defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
 273   (get-foreign-instances slot instance))
 274
 275 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
 276   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
 277    (current :accessor current :initform 0)
 278    (len :accessor len )
 279    (instances :accessor instances))
 280   (:type-name has-very-many))
 281
 282 (defmethod list-next ((slot has-very-many-slot-presentation))
 283   (setf (current slot) (incf (current slot) (number-to-display slot)))
 284   (when (< (len slot) (current slot))
 285     (setf (current slot) (- (number-to-display slot) (len slot)))))
 286
 287 (defmethod list-prev ((slot has-very-many-slot-presentation))
 288   (setf (current slot) (decf (current slot) (number-to-display slot)))
 289   (when  (> 0 (current slot))
 290     ;;what to do here is open to debate
 291     (setf (current slot) (- (len slot)(number-to-display slot)  ))))
 292
 293
 294 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
 295   ;;(<:as-html "isance: " instance)
 296   (if (slot-boundp slot 'ucw::place)
 297       (progn
 298         (<ucw:a :action (list-prev slot) (<:as-html "<<"))
 299         (let ((self (ucw::parent slot)))
 300           (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
 301                 (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
 302         (<ucw:a :action (list-next slot) (<:as-html ">>"))
 303         (call-next-method)
 304         (<:as-html "total :" (len slot)))
 305       (call-next-method)))
 306
 307 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
 308   (let ((f (call-next-method)))
 309     (setf (len slot) (length f))
 310     (setf (instances slot) f)
 311   (loop for cons on (nthcdr (current slot) f)
 312                    for i from 0 upto (number-to-display slot)
 313                    collect (car cons))))
 314
 315 (defslot-presentation has-a-slot-presentation (one-of-presentation)
 316   ((key :initarg :key :accessor key))
 317   (:type-name has-a))
 318
 319 (defmethod get-foreign-slot-value ((slot has-a-slot-presentation) (object t) (slot-name t))
 320   (slot-value object slot-name))
 321
 322 (defmethod present-slot ((slot has-a-slot-presentation) instance)
 323       (<:as-html (presentation-slot-value slot instance))
 324   (if (editablep slot)
 325       (<ucw:select :accessor (presentation-slot-value slot instance) :test #'equalp
 326         (when (allow-nil-p slot)
 327           (<ucw:option :value nil (<:as-html (none-label slot))))
 328         (dolist (option (get-foreign-instances (presentation slot) instance))
 329           (setf (instance (presentation slot)) option)
 330           (<ucw:option :value (get-foreign-slot-value slot option (key slot)) (present (presentation slot)))))
 331       (if (presentation-slot-value slot instance)
 332           (progn
 333             (setf (instance (presentation slot)) (presentation-slot-value slot instance))
 334             (present (presentation slot)))
 335           (<:as-html "--"))))
 336
 337
 338
 339
 340
 341
 342