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