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opening a locked teaching language file now works properly

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svn: r7772
This commit is contained in:
Robby Findler 2007-11-19 22:52:19 +00:00
parent 0f700b8531
commit ac98c07210
2 changed files with 14 additions and 5 deletions
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7
collects/drscheme/private/auto-language.ss
View File

@ -25,10 +25,9 @@
(when (equal? lang-spec spec-in-file)
(set! found-language? lang)
(set! settings (send lang metadata->settings str))
(let ([locked? (send text is-locked?)])
(when locked? (send text lock #f))
(send text delete 0 (send text paragraph-start-position lines))
(when locked? (send text lock #t))))))))))
(send text while-unlocked
(λ ()
(send text delete 0 (send text paragraph-start-position lines)))))))))))
all-languages)
;; check to see if it looks like the module language.

12
collects/framework/private/text.ss
View File

@ -880,7 +880,8 @@ WARNING: printf is rebound in the body of the unit to always
(define file<%>
(interface (editor:file<%> basic<%>)
get-read-write?))
get-read-write?
while-unlocked))
(define file-mixin
(mixin (editor:file<%> basic<%>) (file<%>)
@ -896,6 +897,15 @@ WARNING: printf is rebound in the body of the unit to always
#t)])
(set! read-write? can-edit?)))
(define/public (while-unlocked t)
(let ([unlocked? 'unint])
(dynamic-wind
(λ ()
(set! unlocked? read-write?)
(set! read-write? #t))
(λ () (t))
(λ () (set! read-write? unlocked?)))))
(define/augment (can-insert? x y)
(and read-write? (inner #t can-insert? x y)))
(define/augment (can-delete? x y)