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