[racket] Custom Key Bindings - Post Your File

On Fri, May 11, 2012 at 9:32 PM, Luke Vilnis <lvilnis at gmail.com> wrote:

> I assume Chaitin's constant is involved.


Man, if Xcode knows Omega, I ditch my PC, buy a Mac and leave DrRacket at
once!


>
>
> 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))
>> > >> >
>> > >> > ____________________
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>> > >> >
>> > >
>> > >
>> >
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