Sorry, should have put this in the commit messages: please merge both of these to the release branch.
John Begin forwarded message: > From: cleme...@racket-lang.org > Date: January 18, 2012 2:51:50 PM PST > To: dev@racket-lang.org > Subject: [plt] Push #24173: master branch updated > > clements has updated `master' from 276cb4150d to 481bc2f00f. > http://git.racket-lang.org/plt/276cb4150d..481bc2f00f > > =====[ 2 Commits ]====================================================== > > Directory summary: > 100.0% collects/stepper/private/ > > ~~~~~~~~~~ > > 758523b John Clements <cleme...@racket-lang.org> 2012-01-18 13:08 > : > | put status bar update on stepper frame eventspace > : > M collects/stepper/private/view-controller.rkt | 19 ++++++++++--------- > > ~~~~~~~~~~ > > 481bc2f John Clements <cleme...@racket-lang.org> 2012-01-18 14:51 > : > | make sure initial update goes on eventspace thread > : > M collects/stepper/private/view-controller.rkt | 11 ++++++++--- > > =====[ Overall Diff ]=================================================== > > collects/stepper/private/view-controller.rkt > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > --- OLD/collects/stepper/private/view-controller.rkt > +++ NEW/collects/stepper/private/view-controller.rkt > @@ -79,19 +79,20 @@ > (define view #f) > > ;; wait for steps to show up on the channel. When they do, add them to the > list. > - (define (start-listener-thread) > + (define (start-listener-thread stepper-frame-eventspace) > (thread > (lambda () > (let loop () > (define new-result (async-channel-get view-channel)) > (define new-step (format-result new-result)) > - (queue-callback > - (lambda () > - (set! view-history (append view-history (list new-step))) > - (set! num-steps-available (length view-history)) > - ;; this is only necessary the first time, but it's cheap: > - (semaphore-post first-step-sema) > - (update-status-bar))) > + (parameterize ([current-eventspace stepper-frame-eventspace]) > + (queue-callback > + (lambda () > + (set! view-history (append view-history (list new-step))) > + (set! num-steps-available (length view-history)) > + ;; this is only necessary the first time, but it's cheap: > + (semaphore-post first-step-sema) > + (update-status-bar)))) > (loop))))) > > > @@ -374,8 +375,9 @@ > (send (send s-frame edit-menu:get-undo-item) enable #f) > (send (send s-frame edit-menu:get-redo-item) enable #f) > > + (define stepper-frame-eventspace (send s-frame get-eventspace)) > ;; START THE MODEL > - (start-listener-thread) > + (start-listener-thread stepper-frame-eventspace) > (model:go > program-expander-prime > ;; what do do with the results: > @@ -392,8 +394,12 @@ > (thread > (lambda () > (semaphore-wait first-step-sema) > - (jump-to-beginning) > - (enable-all-buttons))) > + (parameterize > + ([current-eventspace stepper-frame-eventspace]) > + (queue-callback > + (lambda () > + (jump-to-beginning) > + (enable-all-buttons)))))) > > s-frame) >
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