; Prototype to insert Lilypond Standalone Directives. Wants a pair with car Tag and cdr lilypond: (cons "BreathMark" "\\breathe")
(define* (StandAloneDirectiveProto pair #:optional (step? #t) (graphic #f) (displaytext #f) (minpixels #f) (data #f) (overrides #f))
    (d-Directive-standalone (car pair))
    (d-DirectivePut-standalone-postfix (car pair) (cdr pair))
    (d-DirectivePut-standalone-minpixels (car pair) 30)
    (if data
        (d-DirectivePut-standalone-data (car pair) data))
    (if graphic ;If the user specified a graphic use this, else greate a display text
        (begin (d-DirectivePut-standalone-graphic (car pair) graphic)
               (d-DirectivePut-standalone-override (car pair) DENEMO_OVERRIDE_GRAPHIC)))
    (if displaytext
          (d-DirectivePut-standalone-display (car pair) displaytext)
          (d-DirectivePut-standalone-display (car pair) (cdr pair)))
    (if minpixels
      (d-DirectivePut-standalone-minpixels (car pair) minpixels))
    (if overrides
      (d-DirectivePut-standalone-override (car pair) overrides))
    (if step?
        (d-MoveCursorRight))
    (d-RefreshDisplay))

(define (EditStandaloneDirective tag display)
 (define (EditLilyPond)
    (define current (d-DirectiveGet-standalone-postfix tag))
    (if tag
        (let ((text (d-GetUserInput (_ "Modifying the LilyPond Text") (_ "Give LilyPond syntax to be emitted by this Denemo Directive") current)))
            (if text
                (begin (d-DirectivePut-standalone-postfix tag text) 
                        (d-SetSaved #f))
                (d-InfoDialog (_ "Cancelled"))))
        (d-InfoDialog (_ "This directive currently creates no LilyPond via its postfix field, use the Advanced Edit instead"))))
 (define choice (RadioBoxMenu
          (cons (_ "Help ")   'help)   
          (cons (_ "Delete")   'delete)   
          (cons (_ "Edit LilyPond") 'lilypond)
          (cons (_ "Advanced") 'advanced)))
 (case choice
            ((delete) (d-DirectiveDelete-standalone tag))
            ((help) (d-InfoDialog (_ "This is a Directive object.\nDouble click on it to get information about it.")))
            ((lilypond) (EditLilyPond))
            ((advanced) (d-DirectiveTextEdit-standalone  tag))
            ((#f)  (d-InfoDialog (_ "Cancelled")))))
            
; Procedure to insert Self-Editing Lilypond Standalone Directives. Takes a pair with car Tag and cdr lilypond: (cons "BreathMark" "\\breathe") with optional boolean to step right after insertion and graphic
(define* (StandAloneSelfEditDirective pair #:optional (step? #t) (graphic #f) (displaytext #f) (minpixels #f) (overrides #f))
    (if (d-Directive-standalone? (car pair))
      (EditStandaloneDirective (car pair) displaytext)
      (StandAloneDirectiveProto pair step? graphic displaytext minpixels overrides)))

;Wrapper to attach any lilypond directive anywhere.
;;Wants four strings and an arbitrary number of tags (numbers) for overrides.
;;the tag parameter can be a single string or a pair. A single string is both the tag and display, a pair is (cons "tag" "display") 
(define (AttachDirective type field tag content . overrides)
    (define proc-put (string-append "d-DirectivePut-" type "-" field))
    ;(define proc-get (string-append "d-DirectiveGet-" type "-" field))
    ;(define proc-del (string-append "d-DirectiveDelete-" type))
    (define proc-dis (string-append "d-DirectivePut-" type "-display"))
    (define proc-ovr (string-append "d-DirectivePut-" type "-override"))
    (define dis #f)
    (if (pair? tag)
        (begin (set! dis (cdr tag)) (set! tag (car tag)))
        (set! dis tag))
    ((eval-string proc-put) tag content)
    (if (member DENEMO_OVERRIDE_GRAPHIC overrides) ; If DENEMO_OVERRIDE_GRAPHIC is there just go on
        ((eval-string proc-ovr) tag (apply logior overrides))
        (if (equal? type "staff") ; if not test if its a staff directive: we must enforce graphic to make sure staff-icons work.
            ((eval-string proc-ovr) tag (apply logior (append (list DENEMO_OVERRIDE_GRAPHIC) overrides)))
            ((eval-string proc-ovr) tag (apply logior overrides)))) ; not a staff, everythings ok without DENEMO_OVERRIDE_GRAPHIC
    ((eval-string proc-dis) tag dis)
    (d-SetSaved #f)
    #t)

(define (EditStaffDirective tag)        
    (let ((choice #f))
      (begin
        (set! choice (d-GetOption (string-append cue-Delete stop cue-Advanced stop)))
        (cond
         ((boolean? choice)
          (d-WarningDialog (_ "Operation cancelled")))
         ((equal? choice  cue-Advanced)
          (d-DirectiveTextEdit-staff tag))
         ((equal? choice  cue-Delete)
          (d-DirectiveDelete-staff tag))))))
        
    
    
; ToggleDirective is a script to help you by creating and deleting Denemo-Directives with the same command.
;; return value is #t if directive was created or #f if it was deleted. This can be used as hook for further scripting.
;; example (ToggleDirective "staff" "prefix" "Ambitus" "\\with { \\consists \"Ambitus_engraver\" }") - out of date example, see DENEMO_OVERRIDE_WITH in denemo_types.h
(define (ToggleDirective type field tag content . overrides) ; four strings and an arbitrary number of flags (numbers) for override field.
    (define proc-get (string-append "d-DirectiveGet-" type "-" field))
    (define proc-del (string-append "d-DirectiveDelete-" type))
    (define dis #f)
    (if (pair? tag)
        (begin (set! dis (cdr tag)) (set! tag (car tag)))
        (set! dis tag))     
    (if ((eval-string proc-get) tag)
        (begin  ((eval-string proc-del) tag)
                (d-SetSaved #f)
                #f)
        (apply AttachDirective type field (cons tag dis) content overrides)))

;;;;;;provides the editing options for a standalone directive that can only be toggled off/on.      
(define (EditForStandaloneToggle tag)
    (let ((choice (RadioBoxMenu 
         (cons (_ "Help") 'help)
         (cons (_ "Edit Similar") 'similar) 
         (cons (_ "Object Inspector") 'inspect) 
         (cons (_ "Delete") 'delete))))
            (case choice
                ((similar) (d-EditSimilar))
                ((help) (let ((thehelp (d-GetHelp tag)))
                                (if (string? thehelp)
                                    (d-InfoDialog thehelp #f)
                                    (d-InfoDialog (_ "No help!")))))
                ((inspect)
                   (d-DisplayCurrentObject))
                  ((delete)
                    (d-LockDirective #f)
                    (d-DirectiveDelete-standalone tag)))))
                      
; d-DirectivePut-standalone a convenience function for standalone directives
(define (d-DirectivePut-standalone tag)
  (d-DirectivePut-standalone-minpixels tag 0)
  (d-MoveCursorLeft))

(define (d-Directive-standalone tag)
  (if (not (d-Directive-standalone? tag))
      (d-DirectivePut-standalone tag)))

(define* (d-Directive-standalone?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-standalone ""))
      (equal? tag (d-DirectiveGetForTag-standalone tag))))

(define (d-DirectiveGetTag-standalone)
  (d-DirectiveGetForTag-standalone ""))


; d-DirectivePut-score a convenience function for score directives
(define (d-DirectivePut-score tag)
  (d-DirectivePut-score-minpixels tag 0))

(define (d-Directive-score tag)
      (d-DirectivePut-score tag))


;;procedure for creating/updating a directive attached to the the score expects the parameters a test for the directive already present a procedure for putting the directive one for deleting it a tag then two fields for getting a new value a default value a proc for testing the validity of the value and information to give the user when the directive is deleted.
(define (ManageSystemDirective  params present? put-proc get-proc del-proc tag title prompt  value test  deletion-info)
    (if (number? params)
        (begin
            (put-proc (number->string params)))
        (begin
            (if (present? tag)
                (let ((choice (RadioBoxMenu (cons (_ "Help") 'help) (cons (_ "Edit") 'edit) (cons (_ "Delete") 'delete))))
                    (case choice
                        ((help)
                            (let ((thehelp (d-GetHelp tag)))
                                (set! params 'cancel)
                                (if (string? thehelp)
                                    (d-InfoDialog thehelp #f)
                                    (d-InfoDialog (_ "No help!")))))
                        ((delete)
                            (d-SetSaved #f)
                            (del-proc tag)
                            (set! params 'cancel)
                            (d-InfoDialog deletion-info #f)) ;#f => modal
                        ((edit)
                            (set! params (get-proc))
                            (if (test params)
                                (begin
                                    (set! value params)
                                    (set! params #f))
                                (set! params 'cancel))))))
                     (if (not (eq? params 'cancel))
                (let ((value (d-GetUserInput title prompt value)))
                    (if (test value)
                        (put-proc value)))))))

  

(define* (d-Directive-chord?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-chord ""))
      (equal? tag (d-DirectiveGetForTag-chord tag))))
(define (d-DirectiveGetTag-chord)
  (d-DirectiveGetForTag-chord ""))

(define* (d-Directive-note?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-note ""))
      (equal? tag (d-DirectiveGetForTag-note tag))))
(define (d-DirectiveGetTag-note)
  (d-DirectiveGetForTag-note ""))

(define* (d-Directive-score?  #:optional (tag #f))
  (if tag   
    (d-DirectiveGetForTag-score tag)
        (d-DirectiveGetForTag-score "")))

(define (d-DirectiveGetTag-score)
  (d-DirectiveGetForTag-score ""))

(define* (d-Directive-scoreheader?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-scoreheader ""))
      (equal? tag (d-DirectiveGetForTag-scoreheader tag))))
(define (d-DirectiveGetTag-scoreheader)
  (d-DirectiveGetForTag-scoreheader ""))


(define* (d-Directive-movementcontrol?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-movementcontrol ""))
      (equal? tag (d-DirectiveGetForTag-movementcontrol tag))))
(define (d-DirectiveGetTag-movementcontrol)
  (d-DirectiveGetForTag-movementcontrol ""))

(define* (d-Directive-header?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-header ""))
      (equal? tag (d-DirectiveGetForTag-header tag))))
(define (d-DirectiveGetTag-header)
  (d-DirectiveGetForTag-header ""))


(define* (d-Directive-paper?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-paper ""))
      (equal? tag (d-DirectiveGetForTag-paper tag))))
(define (d-DirectiveGetTag-paper)
  (d-DirectiveGetForTag-paper ""))


(define* (d-Directive-layout?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-layout ""))
      (equal? tag (d-DirectiveGetForTag-layout tag))))
(define (d-DirectiveGetTag-layout)
  (d-DirectiveGetForTag-layout ""))


(define* (d-Directive-staff?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-staff ""))
      (equal? tag (d-DirectiveGetForTag-staff tag))))
(define (d-DirectiveGetTag-staff)
  (d-DirectiveGetForTag-staff ""))


(define* (d-Directive-voice?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-voice ""))
      (equal? tag (d-DirectiveGetForTag-voice tag))))
(define (d-DirectiveGetTag-voice)
  (d-DirectiveGetForTag-voice ""))


(define* (d-Directive-clef?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-clef ""))
      (equal? tag (d-DirectiveGetForTag-clef tag))))
(define (d-DirectiveGetTag-clef)
  (d-DirectiveGetForTag-clef ""))


(define* (d-Directive-keysig?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-keysig ""))
      (equal? tag (d-DirectiveGetForTag-keysig tag))))
(define (d-DirectiveGetTag-keysig)
  (d-DirectiveGetForTag-keysig ""))


(define* (d-Directive-timesig?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-timesig ""))
      (equal? tag (d-DirectiveGetForTag-timesig tag))))
(define (d-DirectiveGetTag-timesig)
  (d-DirectiveGetForTag-timesig ""))
  
(define* (d-Directive-stemdirective?  #:optional (tag #f))
  (if (equal? tag #f)
      (string? (d-DirectiveGetForTag-stemdirective ""))
      (equal? tag (d-DirectiveGetForTag-stemdirective tag))))
(define (d-DirectiveGetTag-stemdirective)
  (d-DirectiveGetForTag-stemdirective ""))
  
   
(define (d-DirectiveDelete-standalone Tag)
    (if (equal? (d-DirectiveGetTag-standalone) Tag)
    (begin (d-DeleteObject) #t)
    #f))

(define* (ToggleChordDirective tag fontname lilypond #:optional (override #f) (display #f))
    (if (d-Directive-chord? tag)
          (d-DirectiveDelete-chord tag)
          (begin
           
            (if fontname
                (begin
                    (d-DirectivePut-chord-gx tag 7)
                    (d-DirectivePut-chord-graphic tag fontname)))
            (if display
                (d-DirectivePut-chord-display tag display))
            (d-DirectivePut-chord-postfix tag lilypond)
            (if override
          (d-DirectivePut-chord-override tag override))
           (d-SetSaved #f))))      
        
        
(define* (SetDirectiveConditionalOnCondition criteria type tag action)
  (define not-active criteria)
  (define remaining criteria)
  (define criterion 0)
  (define attached (d-GetIncludeCriteriaOnDirective tag type))
  (let loop ((thelist attached))
			(if (not (null? thelist))
				(begin
					(set! remaining (remove (lambda (elem) (equal? (car thelist) (car elem)))
										 remaining))
					(loop (cdr thelist))))
			(set! not-active remaining))
  (case action
	((include)
					(set! criteria not-active))
	((drop)				
		(let loop ((thelist not-active))
					(if (and (not (null? criteria)) (not (null? thelist)))
						(begin
							(set! criteria (delete (car thelist) criteria))
							(loop (cdr thelist)))))))
  (if (and (eq? action 'include)(null? not-active))
	(d-WarningDialog (_ "All inclusion criteria are set on this directive"))
	(if (not (null? criteria))
	   (begin
		  (set! criterion (RadioBoxMenuList criteria))
		  (if criterion
			(begin 
			 (if (eq? action 'include)
				((eval-string (string-append "d-DirectivePut-" type "-ignore")) tag  
												criterion)
				((eval-string (string-append "d-DirectivePut-" type "-allow")) tag  
												criterion))
				  (d-SetSaved #f))
			 (d-WarningDialog (_ "Cancelled"))))
		(d-WarningDialog (_ "No inclusion criterion is set on this directive")))))

                
(define* (SetDirectiveConditional type tag)
	(if tag
		(let ((choice #f) (criteria (d-GetIncludeCriteria)))
			(set! choice
				  (RadioBoxMenu 
					(cons (_ "Conditional on Layout") 'layout)
					(cons (string-append tag (_ ": For all layouts")) 'all)
					(cons (_ "Only when an Inclusion Criterion set") 'include)
					(cons (_ "Drop an Inclusion Criterion") 'drop)))
			  (case choice
				((layout)
					(SetDirectiveConditionalOnLayout type tag))
				((all)
					((eval-string (string-append "d-DirectivePut-" type "-ignore")) tag 0)
					((eval-string (string-append "d-DirectivePut-" type "-allow")) tag 0))
				((include)
					(if (null? criteria)
						(begin
							(set! criteria (d-CreateIncludeCriterion))))
					(if (not (null? criteria))
						(SetDirectiveConditionalOnCondition criteria type tag choice)
						(d-WarningDialog (_ "Cancelled"))))
				((drop)
					(SetDirectiveConditionalOnCondition criteria type tag choice))))
		(d-WarningDialog (_ "No Denemo Directive here"))))

            
(define* (SetDirectiveConditionalOnLayout type tag)
		(define allow-or-ignore 
						(RadioBoxMenu
							
							(cons (string-append tag (_ ": Allow for a layout")) "allow")
							(cons (string-append tag (_ ": Ignore for a layout")) "ignore")))
		(define thelist (GetLayoutList))
		(define choiceId #f)
		(if allow-or-ignore
			(if (eq? allow-or-ignore 'all)
				(begin
					((eval-string (string-append "d-DirectivePut-" type "-ignore")) tag 0)
					((eval-string (string-append "d-DirectivePut-" type "-allow")) tag 0))
				(begin	
					(set! choiceId (RadioBoxMenuList 
						(map-in-order (lambda (layout)
										(cons (string-append allow-or-ignore " for " (car layout)) (cdr layout)))
									   thelist)))
					(if choiceId
						
							((eval-string (string-append "d-DirectivePut-" type "-" allow-or-ignore)) tag  
														choiceId))))
			(d-WarningDialog (_ "Cancelled"))))
		   
;;;;SelectSelfEditingDirective takes which = "score" or "movement" and returns #f or a pair (type . tag) where 
;type is 'score 'scoreheader 'paper or 'header 'layout 'movementcontrol and tag is the tag of the directive the user chose
;skipping those that do not self-edit i.e. the tag is not a Denemo Command.
(define (SelectSelfEditingDirective title which)
	(let ((choice #f)(directives '()))
		(define (get-directives field)
			(define nth (eval-string (string-append "d-DirectiveGetNthTag-" field)))
			(define dsp (eval-string (string-append "d-DirectiveGet-" field "-display")))
			(let loop ((count 0))
				(define tag (nth count))
				(if tag 
					(let ((label (d-GetLabel tag)))
						(if label
							(let ((display (dsp tag)))
								(if (not display)
									(set! display label))
								(set! directives (cons (cons label (cons field tag)) directives))))
						(loop (1+ count))))))
						
		(if (equal? which "score")
			(begin
				(get-directives "score")
				(get-directives "scoreheader")
				(get-directives "paper"))
			(if (equal? which "movement")
				(begin
					(get-directives "header")
					(get-directives "layout")
					(get-directives "movementcontrol"))
				(get-directives which))) ;; staff timesig etc are covered by this
		(if (null? directives)
				(d-WarningDialog (_ "There are no directives present"))
				(set! choice (TitledRadioBoxMenuList title directives)))
;(disp "returning " choice "\n")
choice))

;;;clones everything except tag and conditional fields
(define (CopyDirective type tag totag)
	(define (get-putter type field)
		(eval-string (string-append "d-DirectivePut-" type "-" field)))
	(define (get-getter type field)
		(eval-string (string-append "d-DirectiveGet-" type "-" field)))
	(define (copy-field type field tag totag)
		(let ((val ((get-getter type field) tag)))
			((get-putter type field) totag (if val val ""))))
	(copy-field type "prefix" tag totag)
	(copy-field type "postfix" tag totag)
	(copy-field type "display" tag totag)
	;(copy-field type "graphic" tag totag) there is no proc defined for this!
	(copy-field type "data" tag totag)
	;(copy-field type "midibytes" tag totag) some (e.g. scoreheader) do not have procs for this FIXME fill out the defs or test for existence
	;(copy-field type "grob" tag totag) ditto
	(copy-field type "override" tag totag))
	
;CreateConditionalVersion pass in a pair (field . tag) asks for a condition and runs the d-<tag> command to generate a directive with tag = <tag>/nCondition	
(define (CreateConditionalVersion choice)
	(let ((temp "Temp") 
		  (toggle #f)
		  (criteria (d-GetIncludeCriteria))
		  (condition (RadioBoxMenu (cons (_ "Conditional on current layout") 'current)
									(cons (_ "Conditional on Inclusion Criterion") 'criterion)
									(cons (_ "Unconditional") 'unconditional))))
		(define (copy-create choice condtag condition)
			(define display ((eval-string (string-append "d-DirectiveGet-" (car choice) "-display")) condtag))
;(disp "display is " display "for choice " choice "\n\n")
			(CopyDirective (car choice) (cdr choice) temp)
			(if ((eval-string (string-append "d-Directive-" (car choice) "?")) condtag)
				(CopyDirective (car choice) condtag (cdr choice)))
;(disp "execute " (string-append "d-" (cdr choice)) " with (type . tag) "choice" parameter \n\n")
			((eval-string (string-append "d-" (cdr choice))) choice) ;;run the command associated with the directive's tag
			;; was it a toggle? if so run it again
			(set! toggle  (not ((eval-string (string-append "d-Directive-" (car choice) "?")) (cdr choice))))
			(if toggle
					((eval-string (string-append "d-" (cdr choice))) choice))
			
			
			(CopyDirective (car choice) (cdr choice) condtag)
			(if (or (not display) (string-index display #\>)) ;use > to identify already augmented display fields
					((eval-string (string-append "d-DirectivePut-" (car choice) "-display")) condtag
						(string-append condtag " -> " (_ "for ") condition)))
			(CopyDirective (car choice) temp (cdr choice))
			((eval-string (string-append "d-DirectiveDelete-" (car choice))) temp))
			
		(define (make-pairs nameAndId) ;;;;transform from list of (name . id) to list of (name . (name . id))
			(cons (car nameAndId) nameAndId))
			
		(if condition
			(begin ;(disp "choice " choice " cond " condition "\n\n")
			   (case condition
					((unconditional)
						(if (not toggle)
							((eval-string (string-append "d-" (cdr choice))) choice)))
					((current)
						(set! condition (d-GetLayoutName))
						(let ((condtag (string-append (cdr choice) "\n" condition)))
						(copy-create choice condtag condition)
						(if toggle ((eval-string (string-append "d-" (cdr choice))) choice))
						(RemoveGraphicOverride (car choice) condtag) ;;removes the DENEMO_OVERRIDE_GRAPHIC from the conditional directive as this is for self-editing directives
						((eval-string (string-append "d-DirectivePut-" (car choice) "-allow")) condtag (d-GetLayoutId))))
					((criterion)
							(if (or (null? criteria) (d-MakeChoice (_ "New Criterion") (_ "Existing Criterion") (_ "Choosing an Inclusion Criterion")))
								(set! criteria (d-CreateIncludeCriterion)))
							(if (not (null? criteria))	
								(set! criteria (map make-pairs criteria)))
							(if (not (null? criteria))
								(let ((crit (TitledRadioBoxMenuList (_ "Choose Inclusion Criterion") criteria)))
									(if crit 
										(set! condition (car crit))) ;(disp "crit is " crit "\n\n")
									(if crit
										(let ((condtag (string-append (cdr choice) "\n" condition)))
											
											(copy-create choice condtag condition)
											
											(RemoveGraphicOverride (car choice) condtag) ;;removes the DENEMO_OVERRIDE_GRAPHIC from the conditional directive as this is for self-editing directives
											(if toggle ((eval-string (string-append "d-" (cdr choice))) choice))
											((eval-string (string-append "d-DirectivePut-" (car choice) "-ignore")) condtag (cdr crit))))))))))))




	
;Lets the user create a conditional version of a directive: type is "score" or "movement" (perhaps others e.g. "staff" would work?) 
;optionally pass in the (type . tag) pair to skip the selection by user of the directive.
(define* (ConditionalValue type #:optional (type-tag-pair #f))
	(let* ((choice (if type-tag-pair 
					type-tag-pair 
					(SelectSelfEditingDirective (_ "Select the property you wish to create a conditional value for.") type))))
		(if choice
			(CreateConditionalVersion choice))))
	
			
			

;;; Toggle the DENEMO_OVERRIDE_HIDDEN override of the directive at the cursor
(define (ToggleHidden type tag) ;;; eg (ToggleHidden "note" "Fingering")
    (if (eval-string (string-append "(d-Directive-" type "? \"" tag "\")"))

        (let ((override (eval-string (string-append "(d-DirectiveGet-" type "-override " "\"" tag "\")"))))
            (eval-string (string-append "(d-DirectivePut-" type "-override " "\"" tag "\" " "(logxor DENEMO_OVERRIDE_HIDDEN " (number->string override) "))")))
        #f))

;;; Remove the DENEMO_OVERRIDE_GRAPHIC override of the directive of type and tag
(define (RemoveGraphicOverride type tag)
    (if (eval-string (string-append "(d-Directive-" type "? \"" tag "\")"))

        (let ((override (eval-string (string-append "(d-DirectiveGet-" type "-override " "\"" tag "\")"))))
            (eval-string (string-append "(d-DirectivePut-" type "-override " "\"" tag "\" (lognot (logior DENEMO_OVERRIDE_GRAPHIC (lognot " (number->string override) "))))"))
         
         #t) 
        #f))

    
(define d-DirectiveGet-standalone-graphic d-DirectiveGet-standalone-graphic_name)            
(define d-DirectiveGet-chord-graphic d-DirectiveGet-chord-graphic_name)            
(define d-DirectiveGet-note-graphic d-DirectiveGet-note-graphic_name)            
(define d-DirectiveGet-clef-graphic d-DirectiveGet-clef-graphic_name)            
(define d-DirectiveGet-keysig-graphic d-DirectiveGet-keysig-graphic_name)            
(define d-DirectiveGet-timesig-graphic d-DirectiveGet-timesig-graphic_name)            
(define d-DirectiveGet-tuplet-graphic d-DirectiveGet-tuplet-graphic_name)            



