;******************************************************************************
;
; Project       : STk-inspect, a graphical debugger for STk
;
; File name     : inspect-misc.stk
; Creation date : Aug-30-1993
; Last update   : Sep-17-1993
;
;******************************************************************************
;
; This file contains definitions often used.
;
;******************************************************************************

(provide "inspect-misc")

(define BITMAP_MENU 		(& "@" tk_library "/bitmaps/menu.bm"))
(define FIXED_FONT 		"-adobe-courier-bold-r-*-*-*-140-*-*-*-*-*-*")
(define MEDIUM_FONT 		"-adobe-helvetica-medium-r-*-*-*-120-*-*-*-*-*-*")
(define BOLD_FONT 		"-adobe-helvetica-bold-r-*-*-*-120-*-*-*-*-*-*")
(define ITALIC-MEDIUM_FONT 	"-adobe-helvetica-medium-o-*-*-*-120-*-*-*-*-*-*")

(define COURIER_BR14 		"-adobe-courier-bold-r-*-*-*-140-*-*-*-*-*-*")
(define HELVETICA_BR12 		"-adobe-helvetica-bold-r-*-*-*-120-*-*-*-*-*-*")
(define HELVETICA_BO12 		"-adobe-helvetica-bold-o-*-*-*-120-*-*-*-*-*-*")
(define HELVETICA_MR12 		"-adobe-helvetica-medium-r-*-*-*-120-*-*-*-*-*-*")
(define HELVETICA_MO12 		"-adobe-helvetica-medium-o-*-*-*-120-*-*-*-*-*-*")
(define HELVETICA_MO10 		"-adobe-helvetica-medium-o-*-*-*-100-*-*-*-*-*-*")
(define SCREEN_WIDTH		(winfo 'vrootwidth  *root*))
(define SCREEN_HEIGHT		(winfo 'vrootheight *root*))


;******************************************************************************
;
; General definitions and macros extending STk.
;
;******************************************************************************

;---- A special eval
(define (inspect::eval x)
  (if (and (symbol? x) (symbol-bound? x)) (eval x) x))

;---- Predicates

(define-macro (not-equal? x y) `(not (equal? ,x ,y)))
(define-macro (different? x y) `(not (equal? ,x ,y)))

;---- Operators

(define-macro (<> x y)
  `(not (= ,x ,y)))


(define (inspect::typeof obj)
  (cond ((boolean? obj)	 'boolean)
        ((list? obj)	 'list)
        ((pair? obj)	 'pair)
        ((symbol? obj)	 'symbol)
        ((number? obj)	 'number)
        ((char? obj)	 'char)
        ((string? obj)	 'string)
        ((vector? obj)	 'vector)
        ((widget? obj)	  'widget) ; must be before since widgets are also closures
        ((closure? obj)	 'closure)
	((primitive? obj) 'primitive)
        (else 'unknown)))

;---- Display

(define (write\n . l)
  (until (null? l)
         (write (car l))
         (set! l (cdr l)))
  (newline))

(define (display\n . l)
  (until (null? l)
         (display (car l))
         (set! l (cdr l)))
  (newline))


;---- Control structures

(define-macro (for var test . body)
  `(do ,var
       ((not ,test))
       ,@body))

;---- Strings

(define (->string obj)
  (if (widget? obj)
      (widget->string obj)
      (format #f "~A" obj)))

(define (->object obj)
  (if (widget? obj)
      (widget->string obj)
      (format #f "~S" obj)))

(define (list->str l)
  (if (null? l)
      ""
      (let loop ((l l) (s ""))
        (let ((car-l (car l)) (cdr-l (cdr l)) (elem ()))
          (if (list? car-l)
              (set! elem (string-append "(" (list->str car-l) ")"))
              (set! elem (->string car-l)))
          (if (null? cdr-l)
              (string-append s elem)
              (loop cdr-l (string-append s elem " ")))))))

;---- Vectors

(define (vector-index v value)
  (let ((length (vector-length v))
        (index #f))
    (for ((i (- length 1) (- i 1)))
         (>= i 0)
         (if (equal? (vector-ref v i) value) (set! index i)))
    index))


;---- Lists

(define (list-first obj lst)
  (define (_list-first obj lst index)
    (cond ((null? lst) #f)
          ((equal? obj (car lst)) index)
          (else (_list-first obj (cdr lst) (+ index 1)))))
  (_list-first obj lst 0))


(define-macro (list-set! lst index value)
  `(begin
     (set! ,lst (list->vector ,lst))
     (vector-set! ,lst ,index ,value)
     (set! ,lst (vector->list ,lst))))


(define (list-remove obj lst)
  (define (_list-remove obj lst prev-lst)
    (cond ((null? lst) prev-lst)
          ((equal? obj (car lst)) (append prev-lst (cdr lst)))
          (else (_list-remove obj (cdr lst) (append prev-lst
                                                    (list (car lst)))))))
  (_list-remove obj lst ()))


;---- Tk goodies

(define-macro (widget . etc)
  `(string->widget (& ,@etc)))

(define (&& . l)
  (if (null? l)
      ""
      (let loop ((l l) (s ""))
        (if (null? (cdr l))
            (string-append s (->string (car l)))
            (loop (cdr l) (string-append s (->string (car l)) " "))))))

(define-macro (tki-get canvas item option)
  `(list-ref (,canvas 'itemconfigure ,item ,option) 2))

(define-macro (tki-set canvas item option value)
  `(,canvas 'itemconfigure ,item ,option ,value))

(define-macro (@ x y)
  `(& "@" ,x "," ,y))

;******************************************************************************
;
; 
;
;******************************************************************************

(define objects-infos-list ())

(define (object-infos obj)  (assoc obj objects-infos-list))
(define (object-type obj)   (list-ref (object-infos obj) 1))
(define (object-symbol obj) (list-ref (object-infos obj) 2))

(define (add-object-infos obj)
  (set! objects-infos-list
	(cons (list obj (inspect::typeof obj) (gensym "__g"))
	      objects-infos-list)))

(define (remove-object-infos obj)
  (set! objects-infos-list
	(list-remove (object-infos obj) objects-infos-list)))

(define (find-object-infos key)
  (let ((found #f))
    (do ((l objects-infos-list (cdr l)))
	((or found (null? l)) found)
      (when (equal? (list-ref (car l) 2) key) 
	    (set! found (list-ref (car l) 0))))))

(define (detailer-type obj-type)
  (case obj-type
    ((vector pair list) 'VPL)
    ((procedure) 'PROCEDURE)
    ((widget) 'WIDGET)
    (else 'UNKNOWN)))

(define (viewer-type obj-type)
  (case obj-type
    ((procedure) 'PROCEDURE)
    ((widget) 'WIDGET)
    (else 'GENERAL)))

(define (update-object obj)
  (let* ((obj-val (inspect::eval obj))
	 (old-type (object-type obj))
	 (obj-type (inspect::typeof obj-val)))
    (unless (equal? old-type obj-type)
	    (let ((obj-sym (object-symbol obj)))
	      (remove-object-infos obj)
	      (set! objects-infos-list
		    (cons (list obj obj-type obj-sym) objects-infos-list))))
    (if (inspected? obj) (inspect-display obj))
    (if (detailed? obj)
	(if (equal? (detailer-type old-type) (detailer-type obj-type))
	    (detail-display obj)
	    (begin
	      (undetail obj)
	      (if (different? 'UNKNOWN (detailer-type obj-type)) 
		  (detail obj)))))
    (if (viewed? obj)
	(if (equal? (viewer-type old-type) (viewer-type obj-type))
	    (view-display obj)
	    (begin
	      (unview obj)
	      (view obj))))
    (update 'idletask)))

;---- Undebug

(define (undebug)
  (for-each (lambda (obj-infos)
	      (let ((obj (car obj-infos)))
		(if (symbol? obj) (untrace-var obj))))
	    objects-infos-list)
  (destroy INSPECTOR_WIDGET_NAME)
  (set! inspected-objects-list ())
  (for-each (lambda (obj) (destroy (detail-tl-wid obj))) detailed-objects-list)
  (set! detailed-objects-list ())
  (for-each (lambda (obj) (destroy (view-tl-wid obj))) viewed-objects-list)
  (set! viewed-objects-list ())
  (set! objects-infos-list ()))

;---- id widget

(define (create-id-widget str)
  (define wid [frame str])
  (pack [frame (& str ".f1")] :side "top" :fill "x")
  (pack [label (& str ".f1.l1") :anchor "w"] :side "left")
  (pack [label (& str ".f1.l2") 
	       :relief "groove" :bd 2 :anchor "w" :font MEDIUM_FONT]
	:fill "x" :expand "yes")
  (pack [frame (& str ".f2")] :side "top" :fill "x")
  (pack [label (& str ".f2.l") :anchor "w"] :side "left")
  (pack [entry (& str ".f2.e") :relief "sunken" :bd 2]
	:fill "x" :expand "yes")
  wid)

(define (set-id-label1 wid text width) 
  ((widget wid ".f1.l1") 'config :text text :width width))
(define (set-id-label2 wid text width)
  ((widget wid ".f2.l") 'config :text text :width width))

(define (set-id-object wid text) (tk-set! (widget wid ".f1.l2") :text text))
(define (get-id-object wid) (tk-get (widget wid ".f1.l2") :text))
(define (set-id-value wid text)
  ((widget wid ".f2.e") 'delete 0 'end)
  ((widget wid ".f2.e") 'insert 0 text))
(define (get-id-value wid) ((widget wid ".f2.e") 'get))


;---- menu widget

(define (create-menu-widget str)
  (define wid [frame str :relief "raised" :bd 2])
  (pack [menubutton (& str ".help") :text "Help"] :side "right")
  (tk-set! (widget str ".help") :menu [menu (& str ".help.m")])
  ((widget str ".help.m") 'add 'command :label "STk-inspect"
			  :command '(stk:make-help STk-inspect-help))
  wid)


;---- toplevel widget

(define (create-toplevel-widget str)
  (define wid [toplevel str])
  (pack (create-id-widget (& str ".id")) :side "top" :fill "x" :padx 4 :pady 2)
  (pack (create-menu-widget (& str ".menu"))
	:side "top" :fill "x" :padx 4 :pady 2)
  wid)

(define (inspect::shadow-entry e)
  (tk-set! e :state "disabled")
  (tk-set! e :bd 1)
  (tk-set! e :bg "grey50")
  (tk-set! e :fg "grey95"))
  

(define (modifiable-object? obj)
  (and (symbol? obj) (symbol-bound? obj) (not (widget? (inspect::eval obj)))))