[racket] Custom Key Bindings - Post Your File

I assume Chaitin's constant is involved.

On Fri, May 11, 2012 at 3:22 PM, Matthias Felleisen <matthias at ccs.neu.edu>wrote:

>
> [How] does Xcode allow you to enter arbitrary computations in response to
> key events? I don't understand how one can list "all possible actions"
> since there are infinitely many? -- Matthias
>
>
>
> On May 11, 2012, at 2:58 PM, Nick Shelley wrote:
>
> > On the topic of key bindings, is there a reason this can't be done in
> the preferences menu? Xcode has a key bindings section in the preferences
> menu that has all possible actions on the left and the current bindings on
> the right, and you can just click on the current binding and change it to
> whatever you want. I think something like that would be nice in DrRacket,
> but I have no idea how hard it would be to implement.
> >
> > Maybe that's on the list of "It would be nice, but..."
> >
> > On Fri, May 11, 2012 at 6:14 AM, Robby Findler <
> robby at eecs.northwestern.edu> wrote:
> > Ah, good point. I've added some example code to the docs that shows
> > how to bind menu items. Here's the code.
> >
> > Robby
> >
> > #lang s-exp framework/keybinding-lang
> >
> > (define (menu-bind key menu-item)
> >  (keybinding
> >   key
> >   (λ (ed evt)
> >     (define canvas (send ed get-canvas))
> >     (when canvas
> >       (define menu-bar (find-menu-bar canvas))
> >       (when menu-bar
> >         (define item (find-item menu-bar menu-item))
> >         (when item
> >           (define evt
> >             (new control-event%
> >                  [event-type 'menu]
> >                  [time-stamp
> >                   (send evt get-time-stamp)]))
> >           (send item command evt)))))))
> >
> > (define/contract (find-menu-bar c)
> >  (-> (is-a?/c area<%>) (or/c #f (is-a?/c menu-bar%)))
> >  (let loop ([c c])
> >    (cond
> >      [(is-a? c frame%) (send c get-menu-bar)]
> >      [(is-a? c area<%>) (loop (send c get-parent))]
> >      [else #f])))
> >
> > (define/contract (find-item menu-bar label)
> >  (-> (is-a?/c menu-bar%)
> >      string?
> >      (or/c (is-a?/c selectable-menu-item<%>) #f))
> >  (let loop ([o menu-bar])
> >    (cond
> >      [(is-a? o selectable-menu-item<%>)
> >       (and (equal? (send o get-plain-label) label)
> >            o)]
> >      [(is-a? o menu-item-container<%>)
> >       (for/or ([i (in-list (send o get-items))])
> >         (loop i))]
> >      [else #f])))
> >
> > (menu-bind "c:a" "Run")
> >
> >
> > On Thu, May 10, 2012 at 8:22 PM, Ray Racine <ray.racine at gmail.com>
> wrote:
> > > I'm caught in a bit of Catch-22.   From the doc.
> > >
> > > If you are most familiar with Emacs-style key bindings (especially on
> > > windows or some linux installations where the control key is, by
> default,
> > > for the menu shortcuts), you should uncheck the Enable keybindings in
> > > menus preference. Many of the keybindings below are inspired by Emacs.
> > >
> > > So I've disabled keybindings in menu and thereby lose crtl-r Run and
> crtl-i
> > > Reindent.  I'd like to re-bind but I've as of yet been unable to
> locate what
> > > functions Run and Reindent correspond to.
> > >
> > > I totally missed the online check syntax option, which sounds like a
> very
> > > good thing.  In fact I'm still totally missing it. :)  I just
> rechecked the
> > > menus/preferences.  Where is this mythic option found?
> > >
> > > Thanks
> > >
> > >
> > > On Thu, May 10, 2012 at 8:49 PM, Robby Findler <
> robby at eecs.northwestern.edu>
> > > wrote:
> > >>
> > >> FWIW, run and reindent are already menu-key based shortcuts (r and i
> > >> respectively) so they should be available already (unless you're on
> > >> windows and you've disabled menu keyboard shortcuts). For reindent you
> > >> can hit tab, and DrRacket re-indents the line you're on or the
> > >> selection (if it is more than one line). For check syntax, I recommend
> > >> you enable online check syntax and then you don't have to hit any key
> > >> at all to get that to work.
> > >>
> > >> hth,
> > >> Robby
> > >>
> > >> On Thu, May 10, 2012 at 6:38 PM, Ray Racine <ray.racine at gmail.com>
> wrote:
> > >> > I'm attempting this weekend to make the leap from my beloved Emacs
> and
> > >> > Geiser to DrRacket.    Was wondering if anyone has a cool set of
> custom
> > >> > keybindings they'd like to share.
> > >> >
> > >> > Some I'd like to get my hands on are:
> > >> > 1. binding for reindent / reindent all.
> > >> > 2. binding for Check Syntax button equivalent.
> > >> > 3. binding for Run button equivalent.
> > >> >
> > >> > Three below I just pieced together.
> > >> >
> > >> > ;; insert λ
> > >> > (keybinding "c:\\" (λ (editor evt) (send editor insert "λ")))
> > >> >
> > >> > ;; close
> > >> > (keybinding "c:q" (λ (editor evt)
> > >> >                     (send (send editor get-top-level-window)
> > >> > close-current-tab)))
> > >> >
> > >> > ;; open a new tab
> > >> > (keybinding "c:t" (λ (editor evt) (send (send editor
> > >> > get-top-level-window)
> > >> > create-new-tab))
> > >> >
> > >> > ____________________
> > >> >  Racket Users list:
> > >> >  http://lists.racket-lang.org/users
> > >> >
> > >
> > >
> >
> > ____________________
> >  Racket Users list:
> >  http://lists.racket-lang.org/users
> >
> > ____________________
> >  Racket Users list:
> >  http://lists.racket-lang.org/users
>
>
> ____________________
>  Racket Users list:
>  http://lists.racket-lang.org/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20120511/b1776760/attachment-0001.html>