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 nil)
  18    (columns :initarg :columns :accessor columns :initform nil)
  19    (html-contentp :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-is (presentation-slot-value slot instance))
  29           (<:as-html (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        ()
  71        (:type-name clsql-sys:wall-time))
  72
  73 (defmethod presentation-slot-value ((slot clsql-wall-time-slot-presentation) instance)
  74   (let ((date (call-next-method)))
  75     (when date (multiple-value-bind (y m d) (clsql:time-ymd date)
  76       (format nil "~a/~a/~a" m d y)))))
  77
  78 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
  79   (let ((new-time (clsql:parse-date-time (remove #\Space value)))
  80         (old-time (when (slot-boundp instance (slot-name slot))
  81                     (slot-value instance (slot-name slot)))))
  82     (unless (or (eql old-time new-time)
  83                 (when (and new-time old-time)
  84                   (equal :equal (clsql:time-compare new-time old-time))))
  85     (setf (presentation-slot-value slot instance) new-time ))))
  86
  87 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
  88   (concatenate 'string (call-next-method) "  (m/d/y)"))
  89
  90 (defmethod present-slot ((slot clsql-wall-time-slot-presentation) instance)
  91   (let ((date (presentation-slot-value slot instance))
  92         (input-id (string (gensym))))
  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)
  97       (<:script :type "text/javascript"
  98                 (<:as-is (format nil "
  99       Calendar.setup({
 100         inputField     :    \"~a\",
 101         ifFormat       :    \"%m/%d/%Y\",
 102       });" input-id))))))
 103
 104 (defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
 105   ((foreign-instance :accessor foreign-instance)
 106    (linkedp :accessor linkedp :initarg :linkedp :initform t)
 107    (creator :accessor creator :initarg :creator :initform :editor)
 108    (new-instance :accessor new-instance :initform nil))
 109   (:type-name relation))
 110
 111 (defaction search-records ((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 (new-instance self)))
 115       (unless new-instance
 116         (setf (new-instance self)
 117               (call-component
 118                (ucw::parent slot)
 119                (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
 120                                   'mewa::mewa-presentation-search)
 121                               :search-presentation
 122                               (mewa:make-presentation finstance
 123                                                       :type :search-presentation)
 124                               :list-presentation
 125                               (mewa:make-presentation finstance
 126                                                       :type :listing)))))
 127       (sync-foreign-instance slot new-instance))))
 128
 129 (defmethod sync-foreign-instance ((slot mewa-relation-slot-presentation) foreign-instance)
 130   (let ((instance (instance (ucw::parent slot))))
 131     (multiple-value-bind (foo f-slot-name)
 132         (meta-model:explode-foreign-key instance (slot-name slot))
 133       (setf (slot-value instance (slot-name slot)) (slot-value foreign-instance f-slot-name))
 134       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p slot)))))
 135
 136
 137 (defaction create-record-on-foreign-key ((slot mewa-relation-slot-presentation) instance)
 138   (multiple-value-bindf (finstance foreign-slot-name)
 139       (meta-model:explode-foreign-key instance (slot-name slot))
 140     (let ((new-instance
 141            (call-component
 142             (ucw::parent slot)
 143             (mewa:make-presentation finstance :type (creator self)))))
 144
 145       ;;;; TODO: this next bit is due to a bad design decision.
 146       ;;;; Components should always have (ok) return self, but somewhere
 147       ;;;; i've made in return (instance self) sometimes, and this
 148       ;;;; bahaviour is totatlly fucked.
 149
 150      (when (typep new-instance 'mewa::mewa)
 151        (setf new-instance (instance new-instance)))
 152
 153       ;;;; sorry about that, and now back t our regular program.
 154
 155       (meta-model:sync-instance new-instance)
 156       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 157       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 158
 159
 160 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
 161  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
 162   (let* ((i (foreign-instance slot))
 163          (pres (mewa::make-presentation
 164                 i
 165                 :type :one-line
 166                 :initargs (list
 167                            :global-properties
 168                            (list :editablep nil :linkedp nil)))))
 169       (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
 170         (setf (component.place pres) (component.place (ucw::parent slot))))
 171       (when i (<ucw:render-component :component pres))))
 172
 173
 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
 236     (<:ul
 237      (dolist (s i)
 238        (let ((s s))
 239          (setf (foreign-instance slot) s)
 240          (when (slot-boundp slot 'ucw::place)
 241            (<ucw:a :action (view-instance slot s :initargs `(:global-properties ,(list :linkedp t :editablep nil)))
 242                  (<:li   (setf (linkedp slot) nil)
 243                          (present-relation slot instance)))))))))
 244
 245
 246 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
 247   (slot-value instance (slot-name slot)))
 248
 249 (defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
 250   (get-foreign-instances slot instance))
 251
 252 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
 253   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
 254    (current :accessor current :initform 0)
 255    (len :accessor len )
 256    (instances :accessor instances))
 257   (:type-name has-very-many))
 258
 259 (defmethod list-next ((slot has-very-many-slot-presentation))
 260   (setf (current slot) (incf (current slot) (number-to-display slot)))
 261   (when (< (len slot) (current slot))
 262     (setf (current slot) (- (number-to-display slot) (len slot)))))
 263
 264 (defmethod list-prev ((slot has-very-many-slot-presentation))
 265   (setf (current slot) (decf (current slot) (number-to-display slot)))
 266   (when  (> 0 (current slot))
 267     ;;what to do here is open to debate
 268     (setf (current slot) (- (len slot)(number-to-display slot)  ))))
 269
 270
 271 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
 272   ;;(<:as-html "isance: " instance)
 273   (if (slot-boundp slot 'ucw::place)
 274       (progn
 275         (<ucw:a :action (list-prev slot) (<:as-html "<<"))
 276         (let ((self (ucw::parent slot)))
 277           (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
 278                 (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
 279         (<ucw:a :action (list-next slot) (<:as-html ">>"))
 280         (call-next-method)
 281         (<:as-html "total :" (len slot)))
 282       (call-next-method)))
 283
 284 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
 285   (let ((f (call-next-method)))
 286     (setf (len slot) (length f))
 287     (setf (instances slot) f)
 288   (loop for cons on (nthcdr (current slot) f)
 289                    for i from 0 upto (number-to-display slot)
 290                    collect (car cons))))
 291
 292 (defslot-presentation has-a-slot-presentation (one-of-presentation)
 293   ((key :initarg :key :accessor key))
 294   (:type-name has-a))
 295
 296 (defmethod get-foreign-slot-value ((slot has-a-slot-presentation) (object t) (slot-name t))
 297   (slot-value object slot-name))
 298
 299 (defmethod present-slot ((slot has-a-slot-presentation) instance)
 300       (<:as-html (presentation-slot-value slot instance))
 301   (if (editablep slot)
 302       (<ucw:select :accessor (presentation-slot-value slot instance) :test #'equalp
 303         (when (allow-nil-p slot)
 304           (<ucw:option :value nil (<:as-html (none-label slot))))
 305         (dolist (option (get-foreign-instances (presentation slot) instance))
 306           (setf (instance (presentation slot)) option)
 307           (<ucw:option :value (get-foreign-slot-value slot option (key slot)) (present (presentation slot)))))
 308       (if (presentation-slot-value slot instance)
 309           (progn
 310             (setf (instance (presentation slot)) (presentation-slot-value slot instance))
 311             (present (presentation slot)))
 312           (<:as-html "--"))))
 313
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