156 lines
6.3 KiB
Scheme
156 lines
6.3 KiB
Scheme
(module text-box-tool mzscheme
|
|
(require (lib "tool.ss" "drscheme")
|
|
(lib "mred.ss" "mred")
|
|
(lib "framework.ss" "framework")
|
|
(lib "unitsig.ss")
|
|
(lib "class.ss")
|
|
(lib "string-constant.ss" "string-constants")
|
|
(lib "include-bitmap.ss" "mrlib"))
|
|
|
|
(provide tool@)
|
|
|
|
;; chunk-string: (listof any) -> (listof any)
|
|
(define (chunk-string s acc)
|
|
(cond
|
|
((and (null? s) (null? acc)) null)
|
|
((null? s) (list (list->string (reverse acc))))
|
|
((char? (car s)) (chunk-string (cdr s) (cons (car s) acc)))
|
|
((null? acc) (cons (car s) (chunk-string (cdr s) null)))
|
|
(else (cons (list->string (reverse acc)) (cons (car s) (chunk-string (cdr s) null))))))
|
|
|
|
;; marshall: writable -> string
|
|
(define (marshall s)
|
|
(let ((os (open-output-string)))
|
|
(with-handlers ((exn:fail? (lambda (x) "")))
|
|
(write s os)
|
|
(get-output-string os))))
|
|
|
|
(define icon
|
|
(let* ((x (make-object bitmap% 10 10))
|
|
(y (make-object bitmap-dc% x)))
|
|
(send y set-font (make-object font% 24 'default 'normal 'normal ))
|
|
(send y draw-text "\"" 0 0)
|
|
x))
|
|
|
|
(define tool@
|
|
(unit/sig drscheme:tool-exports^
|
|
(import drscheme:tool^)
|
|
|
|
(define (phase1) (void))
|
|
(define (phase2) (void))
|
|
|
|
(define snipclass-text-box%
|
|
(class decorated-editor-snipclass%
|
|
(define/override (make-snip stream-in) (new text-box%))
|
|
(super-instantiate ())))
|
|
|
|
(define snipclass (new snipclass-text-box%))
|
|
(send snipclass set-version 1)
|
|
(send snipclass set-classname "text-box%")
|
|
(send (get-the-snip-class-list) add snipclass)
|
|
|
|
(define text-box%
|
|
(class* decorated-editor-snip% (readable-snip<%>)
|
|
(define/override (make-editor) (new text:keymap%))
|
|
(define/override (make-snip) (make-object text-box%))
|
|
(inherit get-editor get-admin)
|
|
|
|
|
|
(define/override (get-corner-bitmap)
|
|
icon)
|
|
|
|
(define/override (get-menu)
|
|
(let ([menu (new popup-menu%)])
|
|
(new menu-item%
|
|
(label "Convert to string")
|
|
(parent menu)
|
|
(callback
|
|
(lambda (x y)
|
|
(let ([to-ed (find-containing-editor)])
|
|
(when to-ed
|
|
(let ([this-pos (find-this-position)])
|
|
(when this-pos
|
|
(let ([from-ed (get-editor)])
|
|
(send to-ed begin-edit-sequence)
|
|
(send from-ed begin-edit-sequence)
|
|
(send to-ed delete this-pos (+ this-pos 1))
|
|
(let* ((p (open-input-text-editor from-ed 0 'end
|
|
(lambda (s)
|
|
(values (box s) 1))))
|
|
(contents
|
|
(let loop ((next (read-char-or-special p)))
|
|
(cond
|
|
((eof-object? next) null)
|
|
(else
|
|
(cons next (loop (read-char-or-special p)))))))
|
|
(repaired-contents
|
|
(map (lambda (x)
|
|
(if (string? x)
|
|
(marshall x)
|
|
(send (unbox x) copy)))
|
|
(chunk-string contents null))))
|
|
(for-each
|
|
(lambda (x)
|
|
(send to-ed insert x this-pos))
|
|
(reverse repaired-contents)))
|
|
(send to-ed end-edit-sequence)
|
|
(send from-ed end-edit-sequence)))))))))
|
|
menu))
|
|
|
|
;; find-containing-editor : -> (union #f editor)
|
|
(define/private (find-containing-editor)
|
|
(let ([admin (get-admin)])
|
|
(and admin
|
|
(send admin get-editor))))
|
|
|
|
;; find-this-position : -> (union #f number)
|
|
(define/private (find-this-position)
|
|
(let ([ed (find-containing-editor)])
|
|
(and ed
|
|
(send ed get-snip-position this))))
|
|
|
|
;; input-port -> (union (listof char) char eof-object? syntax-object)
|
|
(define/private (get-next port)
|
|
(let ([v (read-char-or-special port)])
|
|
(if (special-comment? v)
|
|
(get-next port)
|
|
v)))
|
|
|
|
(define/public (read-special source line column position)
|
|
(let* ((ed (get-editor))
|
|
(port (open-input-text-editor ed))
|
|
(str (let loop ((next (get-next port)))
|
|
(cond
|
|
((eof-object? next) null)
|
|
((char? next)
|
|
(cons next (loop (get-next port))))
|
|
(else (cons #`(marshall #,next) (loop (get-next port))))))))
|
|
#`(let ((marshall
|
|
(lambda (s)
|
|
(let ((os (open-output-string)))
|
|
(with-handlers ((exn:fail? (lambda (x) "")))
|
|
(display s os)
|
|
(get-output-string os))))))
|
|
(string-append #,@(chunk-string str null)))))
|
|
|
|
(super-instantiate ())
|
|
(inherit set-snipclass)
|
|
(set-snipclass snipclass)))
|
|
|
|
|
|
(define (text-box-mixin %)
|
|
(class %
|
|
(inherit get-special-menu get-edit-target-object)
|
|
(super-new)
|
|
(new menu-item%
|
|
(label (string-constant insert-text-box-item))
|
|
(parent (get-special-menu))
|
|
(callback
|
|
(lambda (menu event)
|
|
(let ([c-box (new text-box%)]
|
|
[text (get-edit-target-object)])
|
|
(send text insert c-box)
|
|
(send text set-caret-owner c-box 'global)))))))
|
|
|
|
(drscheme:get/extend:extend-unit-frame text-box-mixin))))
|