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Macro stepper: show error message for interrupted expansion

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svn: r7891

original commit: 1608a90ab031b590a4e5b9432d511efcf9e1898f
This commit is contained in:
Ryan Culpepper 2007-12-03 13:43:31 +00:00
parent 5f02ff4a7d
commit 6167d3b5a7
1 changed files with 13 additions and 0 deletions
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13
collects/macro-debugger/syntax-browser/widget.ss
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@ -93,6 +93,13 @@
(with-unlock -text
(send -text insert text)))
(define/public (add-error-text text)
(with-unlock -text
(let ([a (send -text last-position)])
(send -text insert text)
(let ([b (send -text last-position)])
(send -text change-style error-text-style a b)))))
(define/public (add-clickback text handler)
(with-unlock -text
(let ([a (send -text last-position)])
@ -200,6 +207,12 @@
(send sd set-delta-foreground "blue")
sd))
(define error-text-style
(let ([sd (new style-delta%)])
(send sd set-delta 'change-italic)
(send sd set-delta-foreground "red")
sd))
;; Specialized classes for widget
(define widget-keymap%