X-Git-Url: https://git.hcoop.net/clinton/lisp-on-lines.git/blobdiff_plain/19531fbd947da15a17f8e5557a1a1492eab2bca3..4e2ecf695f074d4ed79c1099fa56b1d6fce08bfb:/src/mewa/slot-presentations.lisp

diff --git a/src/mewa/slot-presentations.lisp b/src/mewa/slot-presentations.lisp
index 4d89895..f501b71 100644
--- a/src/mewa/slot-presentations.lisp
+++ b/src/mewa/slot-presentations.lisp
@@ -1,7 +1,53 @@
 (in-package :it.bese.ucw)
 
+(defun multiple-value-funcall->list (function &rest args)
+  "The function to be called by m-v-bf"
+		   (multiple-value-call #'list (apply function args)))
 
-(defslot-presentation clsql-wall-time-slot-presentation ()
+(defmacro multiple-value-bindf (vars form &body body)
+  "Like M-V-B, only it works in actions. form must be a function call"
+		   `(destructuring-bind ,vars 
+		     (multiple-value-funcall->list #',(car form) ,@(cdr form))
+		     ,@body))
+
+(defcomponent mewa-slot-presentation ()
+  ((slot-name :accessor slot-name 
+	      :initarg :slot-name 
+	      :documentation 
+	      "The name of the slot being accessed")
+   (fill-gaps-only-p :accessor fill-gaps-only-p 
+		     :initarg :fill-gaps-only-p
+		     :initform nil
+		     :documentation 
+		     "When nil, the instance is syncronised with the database. 
+When T, only the default value for primary keys and the joins are updated."))
+  (:documentation "The superclass of all Mewa slot presentations"))
+
+;;;; this has to be in the eval when i would think
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (defun generate-slot-presentation-definition-for-type (type)
+    (let* ((u-name (intern (format nil "~A-SLOT-PRESENTATION" type)))
+	   (sp-name (intern (format nil "MEWA-~A" u-name)))
+	   (t-name (intern (format nil "MEWA-~A" type))))
+      `(defslot-presentation ,sp-name (,u-name mewa-slot-presentation)
+	()
+	(:type-name ,t-name)))))
+
+(defmacro define-base-mewa-presentations (&body types)
+  "Define the mewa-slot-presentations by subclassing the base UCW ones"
+    `(progn ,@(mapcar #'generate-slot-presentation-definition-for-type
+		      types)))
+
+;;;then actually define the base presentations :
+(define-base-mewa-presentations 
+  boolean
+  string
+  number
+  integer
+  currency)
+
+
+(defslot-presentation clsql-wall-time-slot-presentation (mewa-relation-slot-presentation)
        ()
        (:type-name clsql-sys:wall-time))
 
@@ -11,7 +57,13 @@
       (format nil "~a/~a/~a" m d y)))))
 
 (defmethod (setf presentation-slot-value) ((value string) (slot clsql-wall-time-slot-presentation) instance)
-  (setf (presentation-slot-value slot instance) (clsql:parse-date-time (remove #\Space value))))
+  (let ((new-time (clsql:parse-date-time (remove #\Space value)))
+	(old-time (when (slot-boundp instance (slot-name slot))
+		    (slot-value instance (slot-name slot)))))
+    (unless (or (eql old-time new-time)
+		(when (and new-time old-time)
+		  (equal :equal (clsql:time-compare new-time old-time))))
+    (setf (presentation-slot-value slot instance) new-time ))))
 
 (defmethod label :around ((slot clsql-wall-time-slot-presentation))
   (concatenate 'string (call-next-method) "  (mm/dd/yyyy)"))
@@ -30,12 +82,38 @@
         ifFormat       :    \"%m/%d/%Y\",
       });" input-id))))))
 
-(defslot-presentation  mewa-relation-slot-presentation ()
-  ((slot-name :accessor slot-name :initarg :slot-name)
-   (foreign-instance :accessor foreign-instance)
+(defslot-presentation  mewa-relation-slot-presentation (mewa-slot-presentation slot-presentation)
+  ((foreign-instance :accessor foreign-instance)
    (linkedp :accessor linkedp :initarg :linkedp :initform t))
   (:type-name relation))
 
+(defaction search-records ((slot mewa-relation-slot-presentation) instance)
+  (multiple-value-bindf (finstance foreign-slot-name)
+      (meta-model:explode-foreign-key instance (slot-name slot))
+    (let ((new-instance
+            (call-component 
+             (parent slot) 
+             (make-instance (or (cadr (mewa:find-attribute finstance :presentation-search))
+                                'mewa::mewa-presentation-search)
+                            :search-presentation
+                            (mewa:make-presentation finstance 
+                                                    :type :search-presentation)
+                            :list-presentation 
+                            (mewa:make-presentation finstance 
+                                                    :type :listing)))))
+      (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
+      (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
+
+(defaction create-record ((slot mewa-relation-slot-presentation) instance)
+  (multiple-value-bindf (finstance foreign-slot-name)
+      (meta-model:explode-foreign-key instance (slot-name slot))
+    (let ((new-instance
+           (call-component
+            (parent slot) 
+            (mewa:make-presentation finstance :type :editor))))
+      (setf (slot-value instance (slot-name slot)) (slot-value new-instance foreign-slot-name))
+      (meta-model:sync-instance instance :fill-gaps-only-p (fill-gaps-only-p self)))))
+
 (defmethod present-relation ((slot mewa-relation-slot-presentation) instance)
  ;;;;(<:as-html (slot-name slot) "=> " (foreign-instance slot) " from " instance )
   (let* ((i (foreign-instance slot))
@@ -45,18 +123,11 @@
 		:initargs (list 
 			   :global-properties 
 			   (list :editablep nil :linkedp nil)))))
-      (when (ucw::parent slot) (setf (component.place pres) (component.place (ucw::parent slot))))
-      (flet ((render () (when i (<ucw:render-component :component pres))))
-      (cond 
-	((editablep slot)
-	 (render)
-	 (<ucw:a :action (search-records slot i) (<:as-html " (search)"))
-	 (<ucw:a :action (create-record slot i) (<:as-html " (new)")))
-	((linkedp slot)
-	 (<ucw:a :action (view-instance slot i) 
-		 (render)))
-	(t       
-	 (render))))))
+      (when (and (ucw::parent slot) (slot-boundp slot 'ucw::place))
+	(setf (component.place pres) (component.place (ucw::parent slot))))
+      (when i (<ucw:render-component :component pres))))
+
+
 
 (defmethod present-slot ((slot mewa-relation-slot-presentation) instance)
   (present-relation slot instance))
@@ -67,31 +138,68 @@
   (:default-initargs))
 
 (defaction view-instance ((self component) instance &rest initargs)
-  (call-component (parent self) (apply #'mewa:make-presentation instance initargs)))
+  (call-component (parent self) (apply #'mewa:make-presentation instance initargs))
+  ;; the viewed instance could have been changed/deleted, so we sync this instance
+  (meta-model:sync-instance (instance (parent self))))
 
-(defmethod  present-slot :before ((slot foreign-key-slot-presentation) instance)
-  (setf (foreign-instance slot) (meta-model:explode-foreign-key instance (slot-name slot))))
+
+(defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)
+  (setf (foreign-instance slot) 
+	(when (presentation-slot-value slot instance) 
+	  (meta-model:explode-foreign-key instance (slot-name slot))))
+  
+  (flet ((render () (when (foreign-instance slot)(call-next-method))))
+    (if (slot-boundp slot 'place)
+        (cond 
+          ((editablep slot)
+           (render)
+           (<ucw:submit :action  (search-records slot instance) :value "Search" :style "display:inline")
+           (<ucw:submit :action  (create-record slot instance) :value "Add New" :style "display:inline"))
+          ((linkedp slot)
+           (<ucw:a :action (view-instance slot (foreign-instance slot)) 
+                   (render)))
+          (t       
+           (render)))
+	;; presentation is used only for rendering
+        (render))))
 
 ;;;; HAS MANY 
 (defslot-presentation has-many-slot-presentation (mewa-relation-slot-presentation)
-  ()
+  ((add-new-label :accessor add-new-label :initarg :add-new-label :initform "Add New"))
   (:type-name has-many))
 
+
+(defaction add-to-has-many ((slot has-many-slot-presentation) instance)
+  (mewa:ensure-instance-sync (parent slot))
+  (multiple-value-bindf (class home foreign) 
+      (meta-model:explode-has-many instance (slot-name slot))
+    (let ((new (make-instance class)))
+      (setf (slot-value new foreign) (slot-value instance home))
+      (meta-model:sync-instance new :fill-gaps-only-p (fill-gaps-only-p self))
+      (call-component (parent slot) (mewa:make-presentation new :type :editor))
+      (meta-model:sync-instance instance))))
+
 (defmethod present-slot ((slot has-many-slot-presentation) instance)
-  (let ((i (get-foreign-instances slot instance))
-	(linkedp (linkedp slot)))
-  (<:ul 
-   (dolist (s i)
-     (let ((s s))
-     (setf (foreign-instance slot) s)
-     (<ucw:a :action (view-instance slot s :initargs `(:global-properties ,(list :linkedp t :editablep nil)))
-     (<:li   (setf (linkedp slot) nil)
-	     (present-relation slot instance))))))))
+  (when (slot-boundp slot 'place)
+    (<ucw:submit :action (add-to-has-many slot instance) :value (add-new-label slot)))
+  (let ((i (get-foreign-instances slot instance)))
+	
+    (<:ul 
+     (dolist (s i)
+       (let ((s s))
+	 (setf (foreign-instance slot) s)
+         (when (slot-boundp slot 'place)
+           (<ucw:a :action (view-instance slot s :initargs `(:global-properties ,(list :linkedp t :editablep nil)))
+		 (<:li   (setf (linkedp slot) nil)
+			 (present-relation slot instance)))))))))
 
 
 (defmethod get-foreign-instances ((slot has-many-slot-presentation) instance)
   (slot-value instance (slot-name slot)))
 
+(defmethod presentation-slot-value ((slot has-many-slot-presentation) instance)
+  (get-foreign-instances slot instance))
+
 (defslot-presentation has-very-many-slot-presentation (has-many-slot-presentation)
   ((number-to-display :accessor number-to-display :initarg :number-to-display :initform 10)
    (current :accessor current :initform 0)
@@ -114,13 +222,16 @@
 
 (defmethod present-slot ((slot has-very-many-slot-presentation) instance)
   ;;(<:as-html "isance: " instance)
-  (<ucw:a :action (list-prev slot) (<:as-html "<<"))
-  (let ((self (parent slot)))
-    (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
-	    (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
-  (<ucw:a :action (list-next slot) (<:as-html ">>"))
-  (call-next-method)
-  (<:as-html "total :" (len slot))) 
+  (if (slot-boundp slot 'place)
+      (progn
+        (<ucw:a :action (list-prev slot) (<:as-html "<<"))
+        (let ((self (parent slot)))
+          (<ucw:a :action (call-component self (mewa:make-presentation (car (slot-value instance (slot-name slot))) :type :listing :initargs (list :instances (instances slot))))
+	        (<:as-html  (label slot) (format nil " ~a-~a " (current slot) (+ (current slot) (number-to-display slot))))))
+        (<ucw:a :action (list-next slot) (<:as-html ">>"))
+        (call-next-method)
+        (<:as-html "total :" (len slot)))
+      (call-next-method)))
 
 (defmethod get-foreign-instances :around ((slot has-very-many-slot-presentation) instance)
   (let ((f (call-next-method)))
@@ -150,4 +261,4 @@
 	  (progn
 	    (setf (instance (presentation slot)) (presentation-slot-value slot instance))
 	    (present (presentation slot)))
-	  (<:as-html "--"))))
\ No newline at end of file
+	  (<:as-html "--"))))