[racket] Custom Key Bindings - Post Your File

So no, it does not allow you to enter arbitrary computations. I'm not
saying that this should replace the current language-based approach, but I
think that having this for all pre-defined actions (like new tab, run,
complete, etc.) would make customizing (as apposed to augmenting) much more
convenient.

On Fri, May 11, 2012 at 1:39 PM, Nick Shelley <nickmshelley at gmail.com>wrote:

> Sorry to be imprecise. It lists all menu actions plus many standard text
> actions. Here's a screenshot of the last menu actions followed by some
> selection actions.
>
> On Fri, May 11, 2012 at 1:32 PM, Luke Vilnis <lvilnis at gmail.com> wrote:
>
>> 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))
>>> > >> >
>>> > >> > ____________________
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>>> > >> >  http://lists.racket-lang.org/users
>>> > >> >
>>> > >
>>> > >
>>> >
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>>> >
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>>>
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>>
>>
>
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