src/slot-presentations.lisp

   1 (in-package :lisp-on-lines)
   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 5)
  18    (columns :initarg :columns :accessor columns :initform 40)
  19    (escape-html-p :initarg :escape-html-p :accessor escape-html-p :initform nil)
  20    (convert-newlines-p :initarg :convert-newlines-p :accessor convert-newlines-p :initform nil))
  21   (:type-name text))
  22
  23 (defmethod present-slot ((slot text-slot-presentation) instance)
  24   (flet ((maybe-convert-newline-and-escape-html-then-print ()
  25            (let ((string (if (convert-newlines-p slot)
  26                              (with-output-to-string (new-string)
  27                                (with-input-from-string
  28                                    (s (presentation-slot-value slot instance))
  29                                  (loop for line = (read-line s nil)
  30                                        while line
  31                                        do (format new-string "~A~A" line "<br/>"))))
  32                              (presentation-slot-value slot instance))))
  33              (if (escape-html-p slot)
  34                  (<:as-html string)
  35                  (<:as-is string)))))
  36
  37     (if (editablep slot)
  38         (<ucw:textarea
  39          :accessor (presentation-slot-value slot instance)
  40          :reader (or (presentation-slot-value slot instance)
  41                  "")
  42          :rows (rows slot)
  43          :cols (columns slot))
  44         (maybe-convert-newline-and-escape-html-then-print))))
  45
  46
  47 (defcomponent mewa-slot-presentation ()
  48   ((slot-name :accessor slot-name
  49               :initarg :slot-name
  50               :documentation
  51               "The name of the slot being accessed")
  52    (fill-gaps-only-p :accessor fill-gaps-only-p
  53                      :initarg :fill-gaps-only-p
  54                      :initform nil
  55                      :documentation
  56                      "When nil, the instance is syncronised with the database.
  57 When T, only the default value for primary keys and the joins are updated.")
  58    (show-label-p :accessor show-label-p :initarg :show-label-p :initform t)
  59    (creatablep :accessor creatablep :initarg :creatablep :initform t))
  60   (:documentation "The superclass of all Mewa slot presentations"))
  61
  62 ;;;; this has to be in the eval when i would think
  63 (eval-when (:compile-toplevel :load-toplevel :execute)
  64   (defun generate-slot-presentation-definition-for-type (type)
  65     (let* ((u-name (intern (format nil "~A-SLOT-PRESENTATION" type)))
  66            (sp-name (intern (format nil "MEWA-~A" u-name)))
  67            (t-name (intern (format nil "MEWA-~A" type))))
  68       `(defslot-presentation ,sp-name (,u-name mewa-slot-presentation)
  69         ()
  70         (:type-name ,t-name)))))
  71
  72 (defmacro define-base-mewa-presentations (&body types)
  73   "Define the mewa-slot-presentations by subclassing the base UCW ones"
  74     `(progn ,@(mapcar #'generate-slot-presentation-definition-for-type
  75                       types)))
  76
  77 ;;;then actually define the base presentations :
  78 (define-base-mewa-presentations
  79   boolean
  80   string
  81   number
  82   integer
  83   currency)
  84
  85 (defslot-presentation clsql-wall-time-slot-presentation (mewa-relation-slot-presentation)
  86        ((input-id :accessor input-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+))
  87         (trigger-id :accessor trigger-id :initform (arnesi:random-string 10 arnesi:+ascii-alphabet+))
  88         (default-to-now-p :accessor default-to-now-p :initarg :default-to-now-p :initform nil))
  89        (:type-name clsql-sys:wall-time))
  90
  91 (defmethod presentation-slot-value ((slot clsql-wall-time-slot-presentation) instance)
  92   (let ((date (call-next-method)))
  93     (when date (multiple-value-bind (y m d) (clsql:time-ymd date)
  94       (format nil "~a/~a/~a" m d y)))))
  95
  96 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
  97   (let ((new-time (clsql:parse-date-time (remove #\Space value)))
  98         (old-time (when (slot-boundp instance (slot-name slot))
  99                     (slot-value instance (slot-name slot)))))
 100     (unless (or (eql old-time new-time)
 101                 (when (and new-time old-time)
 102                   (equal :equal (clsql:time-compare new-time old-time))))
 103     (setf (presentation-slot-value slot instance) new-time))))
 104
 105 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
 106   (concatenate 'string (call-next-method) "  (m/d/y)"))
 107
 108 (defmethod present-slot ((slot clsql-wall-time-slot-presentation) instance)
 109   (let ((date (presentation-slot-value slot instance)))
 110     ;; Default values
 111     (when (and (not date) (default-to-now-p slot))
 112       (setf (presentation-slot-value slot instance) (clsql:get-time)))
 113     ;;simple viewer
 114     (if (and date (not (editablep slot)))
 115         (<:as-html date))
 116     ;; editor
 117     (when (editablep slot)
 118       (<ucw:input :accessor (presentation-slot-value slot instance) :id (input-id slot) :style "display:inline")
 119       (<:button :id (trigger-id slot) (<:as-html "[...]"))
 120       (<:script :type "text/javascript"
 121                 (<:as-is (format nil "
 122
 123 Calendar.setup({
 124  inputField     :    \"~a\",
 125  button         :    \"~a\",
 126  ifFormat       :    \"%m/%d/%Y\" });" (input-id slot) (trigger-id slot)))))))
 127
 128 (defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
 129   ((foreign-instance :accessor foreign-instance)
 130    (linkedp :accessor linkedp :initarg :linkedp :initform t)
 131    (creator :accessor creator :initarg :creator :initform :editor)
 132    (new-instance :accessor new-instance :initform nil))
 133   (:type-name relation))
 134
 135 (defaction search-records ((slot mewa-relation-slot-presentation) instance)
 136   (multiple-value-bindf (finstance foreign-slot-name)
 137       (meta-model:explode-foreign-key instance (slot-name slot))
 138     (let ((new-instance (new-instance self)))
 139       (unless new-instance
 140         (setf (new-instance self)
 141               (call-component
 142                (ucw::parent slot)
 143                (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
 144                                   'mewa::mewa-presentation-search)
 145                               :search-presentation
 146                               (mewa:make-presentation finstance
 147                                                       :type :search-presentation)
 148                               :list-presentation
 149                               (mewa:make-presentation finstance
 150                                                       :type :listing)))))
 151       (sync-foreign-instance slot new-instance))))
 152
 153 (defmethod sync-foreign-instance ((slot mewa-relation-slot-presentation) foreign-instance)
 154   (let ((instance (instance (ucw::parent slot))))
 155     (multiple-value-bind (foo f-slot-name)
 156         (meta-model:explode-foreign-key instance (slot-name slot))
 157       (setf (slot-value instance (slot-name slot)) (slot-value foreign-instance f-slot-name))
 158       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p slot)))))
 159
 160
 161 (defaction create-record-on-foreign-key ((slot mewa-relation-slot-presentation) instance)
 162   (multiple-value-bindf (finstance foreign-slot-name)
 163       (meta-model:explode-foreign-key instance (slot-name slot))
 164     (let ((new-instance
 165            (call-component
 166             (ucw::parent slot)
 167             (mewa:make-presentation finstance :type (creator self)))))
 168
 169       ;;;; TODO: this next bit is due to a bad design decision.
 170       ;;;; Components should always have (ok) return self, but somewhere
 171       ;;;; i've made in return (instance self) sometimes, and this
 172       ;;;; bahaviour is totatlly fucked.
 173
 174      (when (typep new-instance 'mewa::mewa)
 175        (setf new-instance (instance new-instance)))
 176
 177       ;;;; sorry about that, and now back t our regular program.
 178
 179       (meta-model:sync-instance new-instance)
 180       (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
 181       (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
 182
 183
 184 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
 185  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
 186   (let* ((i (foreign-instance slot))
 187          (pres (mewa::make-presentation
 188                 i
 189                 :type :one-line
 190                 :initargs (list
 191                            :global-properties
 192                            (list :editablep nil :linkedp nil)))))
 193       (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
 194         (setf (component.place pres) (component.place (ucw::parent slot))))
 195       (when i (<ucw:render-component :component pres))))
 196
 197 (defmethod present-slot ((slot mewa-relation-slot-presentation) instance)
 198   (present-relation slot instance))
 199
 200 (defslot-presentation foreign-key-slot-presentation (mewa-relation-slot-presentation)
 201   ()
 202   (:type-name foreign-key)
 203   (:default-initargs))
 204
 205 (defaction view-instance ((self component) instance &rest initargs)
 206   (call-component (ucw::parent self) (apply #'mewa:make-presentation instance initargs))
 207   ;; the viewed instance could have been changed/deleted, so we sync this instance
 208   (meta-model:sync-instance (instance (ucw::parent self))))
 209
 210
 211 (defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)
 212   (setf (foreign-instance slot)
 213         (when (presentation-slot-value slot instance)
 214           (meta-model:explode-foreign-key instance (slot-name slot))))
 215   (flet ((render () (when (foreign-instance slot)(call-next-method))))
 216     (if (slot-boundp slot 'ucw::place)
 217         (cond
 218           ((editablep slot)
 219            (render)
 220            (<ucw:submit :action  (search-records slot instance) :value "Search" :style "display:inline")
 221            (<ucw:submit :action  (create-record-on-foreign-key slot instance) :value "Add New" :style "display:inline"))
 222           ((linkedp slot)
 223            (<ucw:a :action (view-instance slot (foreign-instance slot))
 224                    (render)))
 225           (t
 226            (render)))
 227         ;; presentation is used only for rendering
 228         (render))))
 229
 230
 231 (defmethod find-foreign-instances ((slot foreign-key-slot-presentation))
 232   (clsql:select (class-name (class-of (meta-model:explode-foreign-key (instance slot) (slot-name slot))))))
 233
 234
 235
 236 ;;;; HAS MANY
 237 (defslot-presentation has-many-slot-presentation (mewa-relation-slot-presentation)
 238   ((add-new-label :accessor add-new-label :initarg :add-new-label :initform "Add New"))
 239   (:type-name has-many))
 240
 241 (defaction add-to-has-many ((slot has-many-slot-presentation) instance)
 242   ;; if the instance is not stored we must make sure to mark it stored now!
 243   (unless (meta-model::persistentp instance)
 244     (setf (mewa::modifiedp (ucw::parent self)) t))
 245   ;; sync up the instance
 246   ;;(mewa:ensure-instance-sync (parent slot))
 247   (meta-model:sync-instance (instance (ucw::parent slot)))
 248
 249   (multiple-value-bindf (class home foreign)
 250       (meta-model:explode-has-many instance (slot-name slot))
 251     (let ((new (make-instance class)))
 252       (setf (slot-value new foreign) (slot-value instance home))
 253       (meta-model:sync-instance new :fill-gaps-only-p (fill-gaps-only-p self))
 254       (call-component (ucw::parent slot)  (mewa:make-presentation new :type (creator slot)))
 255       (meta-model:sync-instance instance))))
 256
 257 (defmethod present-slot ((slot has-many-slot-presentation) instance)
 258   (when (slot-boundp slot 'ucw::place)
 259     (<ucw:submit :action (add-to-has-many slot instance) :value (add-new-label slot)))
 260   (let* ((i (get-foreign-instances slot instance))
 261          (presentation (and i (make-presentation (car  i) :type :one-line))))
 262     (when i
 263       (flet ((linker (i string)
 264                (<ucw:a
 265                 :action (view-instance slot i
 266                                        :initargs
 267                                        `(:global-properties ,
 268                                          (list
 269                                           :linkedp t
 270                                           :editablep nil)))
 271                 (<:as-html string))))
 272         (<:table :cellpadding 10
 273          (<:tr
 274           (<:th)                        ;empty col for (view) link
 275           (dolist (s (slots presentation))
 276             (<:th (<:as-html  (label s)))))
 277          (dolist (s i)
 278            (let ((s s))
 279              (setf (foreign-instance slot) s)
 280              (when (slot-boundp slot 'ucw::place)
 281                (<:tr
 282                 (<:td (linker s " (view) "))
 283                 (dolist (p (slots (make-presentation s :type :one-line
 284                                                      :initargs
 285                                                      '(:global-properties
 286                                                        (:editablep nil)))))
 287                   (<:td
 288
 289                    (present-slot p s))))))))))))
 290
 291
 292 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
 293   (slot-value instance (slot-name slot)))
 294
 295 (defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
 296   (get-foreign-instances slot instance))
 297
 298 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
 299   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
 300    (current :accessor current :initform 0)
 301    (len :accessor len )
 302    (instances :accessor instances))
 303   (:type-name has-very-many))
 304
 305 (defmethod list-next ((slot has-very-many-slot-presentation))
 306   (setf (current slot) (incf (current slot) (number-to-display slot)))
 307   (when (< (len slot) (current slot))
 308     (setf (current slot) (- (number-to-display slot) (len slot)))))
 309
 310 (defmethod list-prev ((slot has-very-many-slot-presentation))
 311   (setf (current slot) (decf (current slot) (number-to-display slot)))
 312   (when  (> 0 (current slot))
 313     ;;what to do here is open to debate
 314     (setf (current slot) (- (len slot)(number-to-display slot)  ))))
 315
 316
 317 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
 318   ;;(<:as-html "isance: " instance)
 319   (if (slot-boundp slot 'ucw::place)
 320       (progn
 321         (<ucw:a :action (list-prev slot) (<:as-html "<<"))
 322         (let ((self (ucw::parent slot)))
 323           (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
 324                 (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
 325         (<ucw:a :action (list-next slot) (<:as-html ">>"))
 326         (call-next-method)
 327         (<:as-html "total :" (len slot)))
 328       (call-next-method)))
 329
 330 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
 331   (let ((f (call-next-method)))
 332     (setf (len slot) (length f))
 333     (setf (instances slot) f)
 334   (loop for cons on (nthcdr (current slot) f)
 335                    for i from 0 upto (number-to-display slot)
 336                    collect (car cons))))
 337
 338
 339 ;;;; * Has-a
 340 (defslot-presentation has-a-slot-presentation (mewa-relation-slot-presentation)
 341   ((allow-nil-p :accessor allow-nil-p :initarg :allow-nil-p :initform t)
 342    (attributes :accessor attributes :initarg :attributes :initform nil))
 343   (:type-name has-a))
 344
 345 (defmethod find-foreign-slot-value ((slot has-a-slot-presentation) (object t))
 346   (multiple-value-bind (c s)
 347       (meta-model:explode-foreign-key (instance (ucw::parent slot)) (slot-name slot))
 348     (slot-value object s)))
 349
 350 (defmethod get-foreign-instances ((slot mewa-relation-slot-presentation) instance)
 351   (clsql:select (class-name (class-of
 352                              (meta-model:explode-foreign-key instance (slot-name slot))))
 353                 :flatp t))
 354
 355 (defmethod present-slot ((slot has-a-slot-presentation) instance)
 356 ;      (<:as-html (presentation-slot-value slot instance))
 357   (if (editablep slot)
 358       (progn (<ucw:select :accessor (presentation-slot-value slot instance) :test #'equalp
 359         (when (allow-nil-p slot)
 360           (<ucw:option :value nil (<:as-html "none")))
 361         (dolist (option (get-foreign-instances slot instance))
 362           (<ucw:option :value (find-foreign-slot-value slot option)
 363                        (lol:present
 364                         (lol:make-presentation option
 365                            :type :as-string
 366                            :initargs
 367                            `(:attributes ,(attributes slot)))
 368                         ))))
 369              (when (creatablep slot)
 370                (<ucw:submit :action  (create-record-on-foreign-key slot instance) :value "Add New" :style "display:inline")))
 371       (if (presentation-slot-value slot instance)
 372           (progn
 373            (lol:present
 374             (lol:make-presentation (meta-model:explode-foreign-key instance (slot-name slot))
 375                            :type :one-line
 376                            :initargs
 377                            `(:attributes ,(attributes slot)))
 378                            ))
 379           (<:as-html "--"))))
 380
 381 (defslot-presentation many-to-many-slot-presentation (mewa-relation-slot-presentation)
 382   ((list-view :accessor list-view :initarg :list-view :initform :one-line)
 383    (action-view :accessor action-view :initarg :action-view :initform :viewer)
 384    (create-view :initform :creator)
 385    (select-view :initform :as-string :accessor select-view))
 386   (:type-name many-to-many)
 387   (:default-initargs :label "many to many"))
 388
 389 (defun %delete-item (item)
 390   (clsql:with-default-database (clsql:*default-database*)
 391     (ignore-errors
 392     (clsql:delete-instance-records item))))
 393
 394 (defaction delete-item ((self component) instance)
 395   (multiple-value-bind (res err) (%delete-item instance)
 396   (if (not err)
 397       (call 'info-message :message "Removed Instance")
 398       (call 'info-message :message (format nil "Could not remove item. Try removing associated items first. ~A" instance)))))
 399
 400 (defaction delete-relationship ((slot many-to-many-slot-presentation) rel instance)
 401   (delete-item (ucw::parent self) rel)
 402   (sync-instance instance)
 403   (answer-component (ucw::parent self)   t))
 404
 405
 406 (defun find-many-to-many-join-class (slot instance)
 407   (let* ((imd (getf (meta-model::find-slot-metadata instance (slot-name slot))
 408                     :db-info))
 409          (jc (make-instance (getf imd :join-class)))
 410          (jcmd (getf (meta-model::find-slot-metadata jc (getf imd :target-slot))
 411                      :db-info)))
 412     (getf jcmd :join-class)))
 413
 414 (defmethod find-all-instances ((slot many-to-many-slot-presentation) instance)
 415   (clsql:select (find-many-to-many-join-class slot instance) :flatp t))
 416
 417 (defmethod present-slot ((slot many-to-many-slot-presentation) instance)
 418   (let ((instances (slot-value instance (slot-name slot)))
 419         new-instance)
 420     (<:ul
 421      (<:li (<ucw:button :action (add-to-many-to-many slot instance)
 422                          (<:as-html "Add New")))
 423      (<:li  (<ucw:button :action (add-to-many-to-many slot instance new-instance)
 424                          (<:as-html "Add:"))
 425             (<ucw:select :accessor new-instance
 426                          (arnesi:dolist* (i (find-all-instances slot instance))
 427                            (<ucw:option
 428                             :value i
 429                             (lol:present-view (i (select-view slot) slot))))))
 430      (dolist* (i instances)
 431        (<:li
 432         (<ucw:a :action (call-view ((car i) (action-view slot) (ucw::parent slot)))
 433                 (<:as-html "(view) "))
 434         (<ucw:a :action (delete-relationship slot (second i) instance)
 435                 (<:as-html "(remove) "))
 436         (present-view ((car i) (list-view slot) (ucw::parent slot)))) ))))
 437
 438
 439 (defaction add-to-many-to-many ((slot many-to-many-slot-presentation) instance &optional foreign-instance)
 440   ;;;; First things first, we sync.
 441   (sync-instance instance)
 442   (let* (new
 443          (imd (getf (meta-model::find-slot-metadata instance (slot-name slot))
 444                     :db-info))
 445          (jc (make-instance (getf imd :join-class)))
 446          (jcmd (getf (meta-model::find-slot-metadata jc (getf imd :target-slot))
 447                      :db-info))
 448          (fc (make-instance (getf jcmd :join-class)))
 449          (c (if
 450              foreign-instance
 451              foreign-instance
 452              (call-view (fc :creator (ucw::parent slot))))))
 453     (when c
 454       (sync-instance c)
 455 ;      (error "~A ~A ~A" (getf imd :foreign-key) (getf jcmd :foreign-key) (getf imd :home-key))
 456       (setf (slot-value jc (getf imd :foreign-key))
 457             (slot-value instance (getf imd :home-key)))
 458       (setf (slot-value jc (getf jcmd :home-key))
 459             (slot-value c (getf jcmd :foreign-key)))
 460       (sync-instance jc)
 461
 462       (sync-instance instance)
 463       c)))