src/mewa/presentations.lisp

   1 (in-package :mewa)
   2
   3 (defaction edit-instance ((self mewa))
   4   (call-presentation (instance self) :type :editor))
   5
   6 ;;;one-line objects
   7 (defcomponent mewa-one-line-presentation (mewa one-line-presentation)
   8   ()
   9   (:default-initargs :attributes-getter #'one-line-attributes-getter))
  10
  11 (defmethod one-line-attributes-getter ((self mewa))
  12   (or (meta-model:list-keys (instance self))))
  13
  14 ;;;objects
  15 (defcomponent mewa-object-presentation (mewa ucw:object-presentation) ())
  16
  17 (defcomponent two-column-presentation (mewa-object-presentation) ())
  18
  19 (defmethod present ((pres two-column-presentation))
  20
  21   (<:table :class (css-class pres)
  22            (loop for slot on (slots pres) by #'cddr
  23                  do
  24                  (<:tr :class "presentation-slot-row"
  25                        (<:td :class "presentation-slot-label"
  26                              (<:as-html (label (first slot))))
  27                        (<:td :class "presentation-slot-value"
  28                              (present-slot (first slot) (instance pres)))
  29                        (when (second slot)
  30                          (<:td :class "presentation-slot-label"
  31                                (<:as-html (label (second slot))))
  32                          (<:td :class "presentation-slot-value"
  33                                (present-slot (second slot) (instance pres))))))
  34            (render-options pres (instance pres))))
  35
  36
  37 ;;;lists
  38 (defcomponent mewa-list-presentation (mewa ucw:list-presentation)
  39   ((ucw::instances :accessor instances :initarg :instances :initform nil)
  40    (instance :accessor instance)
  41    (select-label :accessor select-label :initform "select" :initarg :select-label)
  42    (selectablep :accessor selectablep :initform t :initarg :selectablep)))
  43
  44 (defaction select-from-listing ((listing mewa-list-presentation) object index)
  45   (answer object))
  46
  47 (defmethod render-list-row ((listing mewa-list-presentation) object index)
  48   (<:tr :class "item-row"
  49     (<:td :align "center" :valign "top"
  50       (when (ucw::editablep listing)
  51         (let ((object object))
  52           (<ucw:input :type "submit"
  53                       :action (edit-from-listing listing object index)
  54                       :value (ucw::edit-label listing))))
  55       (<:as-is " ")
  56       (when (ucw::deleteablep listing)
  57         (let ((index index))
  58           (<ucw:input :type "submit"
  59                       :action (delete-from-listing listing object index)
  60                       :value (ucw::delete-label listing))))
  61       (when (selectablep listing)
  62         (let ((index index))
  63           (<ucw:input :type "submit"
  64                       :action (select-from-listing listing object index)
  65                       :value (select-label listing)))))
  66     (dolist (slot (slots listing))
  67       (<:td :class "data-cell" (present-slot slot object)))
  68     (<:td :class "index-number-cell")
  69     ))
  70
  71 (defmethod get-all-instances ((self mewa-list-presentation))
  72   (instances self))
  73
  74
  75 ;;; searching
  76 (defgeneric search-expr (criteria instance)
  77   (:documentation "Return ready to apply criteria.
  78                    What to do with it is backend dependent."))
  79
  80 (defmacro def-search-expr (((self criteria-type)) (model-expr &body body))
  81   `(defmethod search-expr ((,self ,criteria-type) instance)
  82      (,model-expr
  83       instance
  84       (ucw::slot-name (ucw::presentation ,self))
  85       ,@body)))
  86
  87 (defmethod search-expr ((self ucw::negated-criteria) instance)
  88   (when (ucw::criteria self)
  89     (meta-model:expr-not
  90      instance
  91      (search-expr (ucw::criteria self) instance))))
  92
  93 (def-search-expr ((self ucw::string-starts-with))
  94     (meta-model:expr-starts-with (ucw::search-text self)))
  95
  96 (def-search-expr ((self ucw::string-ends-with))
  97     (meta-model:expr-ends-with (ucw::search-text self)))
  98
  99 (def-search-expr ((self ucw::string-contains))
 100     (meta-model:expr-contains (ucw::search-text self)))
 101
 102 (def-search-expr ((self ucw::number-less-than))
 103     (meta-model:expr-< (ucw::number-input self)))
 104
 105 (def-search-expr ((self ucw::number-greater-than))
 106     (meta-model:expr-> (ucw::number-input self)))
 107
 108 (def-search-expr ((self ucw::number-equal-to))
 109     (meta-model:expr-= (ucw::number-input self)))
 110
 111 (defcomponent mewa-presentation-search (ucw::presentation-search)
 112   ((display-results-p :accessor display-results-p :initarg :display-results-p :initform nil)))
 113
 114 (defmethod instance ((self mewa:mewa-presentation-search))
 115   (instance (ucw::search-presentation self)))
 116
 117 (defmethod search-expr ((self mewa:mewa-presentation-search) instance)
 118   (apply #'meta-model:expr-and instance
 119          (mapcan (lambda (c) (let ((e (search-expr c instance)))
 120                                (if (listp e) e (list e))))
 121                  (ucw::criteria self))))
 122
 123 (defmethod search-query ((self mewa:mewa-presentation-search))
 124   (search-expr self (instance self)))
 125
 126 (defmethod valid-instances ((self mewa:mewa-presentation-search))
 127   (meta-model:select-instances (instance self) (search-query self)))
 128
 129 (defmethod get-all-instances ((self mewa-presentation-search))
 130   (meta-model:select-instances (instance self)))
 131
 132 (defmethod ok ((self mewa-presentation-search) &optional arg)
 133   (declare (ignore arg))
 134   (setf (ucw::instances (ucw::list-presentation self)) (valid-instances self))
 135   (setf (display-results-p self) t))
 136
 137 (defmethod render-on ((res response) (self mewa-presentation-search))
 138   (<:as-html (search-query self))
 139   (ucw::render-criteria res self)
 140   (<ucw:input :type "submit" :value "Search" :action (ok self))
 141   (when (display-results-p self)
 142     (let ((listing (ucw::list-presentation self)))
 143       (setf
 144        (slot-value listing 'ucw::calling-component) (slot-value self 'ucw::calling-component)
 145        (slot-value listing 'ucw::place) (slot-value self 'ucw::place)
 146        (slot-value listing 'ucw::continuation) (slot-value self 'ucw::continuation))
 147
 148       (render-on res listing))))
 149
 150 ;;;;
 151 (defcomponent dont-show-unset-slots ()())
 152
 153 (defmethod slots :around ((self dont-show-unset-slots))
 154   (remove-if-not #'(lambda (s) (let ((s (presentation-slot-value s (instance self))))
 155                                  (and s (not (equal "" s)))))
 156                  (call-next-method)))