[REBOL] Re: Rebol/View 'Key Event Problem
From: tmoeller:fastmail:fm at: 7-Oct-2009 20:13
OK, i understand that. I downloaded the extension kit. Do you have a
documentation for the kit somewhere. I searched for it but couldn't find
and some link are already dead.
Thorsten
On Wed, 07 Oct 2009 19:27 +0200, "Henrik Mikael Kristensen"
<henrikmk-gmail.com> wrote:
> On Wed, Oct 7, 2009 at 4:45 PM, Thorsten Moeller <tmoeller-fastmail.fm>
> wro
> te:
> >
> > Hi,
> >
> > i am just writing a small editor for myself which should have a realtime
> > wordcount. Simplified i have following situation:
> >
> > editor: layout [ mytext: area ifo: info btn "Close" [unview]]
> >
> > view editor
> >
> > I am not too familiar with events in rebol. From the docs i learned that
> > i have to change the area definition to something like the following to
> > make the area react on key events:
> >
> > =A0 =A0 mytext: area feel [
> > =A0 =A0 =A0 =A0engage: func [face action event] [
> > =A0 =A0 =A0 =A0 =A0 =A0if action = 'key [mylen: length? parse mytext/te
> xt none
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0ifo/text: join
> "Wordcount: " copy to-string mylen
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0show if
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0
> =A0 =A0]
> >
> > But just adding the feel to the area doesn't work.
> >
> > What am i missing??
>
> You are, with that code above, replacing the original engage function
> for 'mytext, which contains all the text editing functions, so text
> editing stops working. Other than that, your code would normally be
> correct. Unfortunately there is no simple way in VID to just add an
> on-key handler without rewriting the real engage function that is used
> in the area style. You can see it like this:
>
> probe get in get in get-style 'area 'feel 'engage
>
> The solution is to modify that function and include it again. Cumbersome.
> :
> -)
>
> You can also download the VID Extension Kit, which lets you do your
> task, like this:
>
> view make-window [
> ; ifo and if faces here
> my-text: area on-key [
> act [
> mylen: length? parse mytext/text none
> ifo/text: join "Wordcount: " copy to-string mylen
> show if
> ]
> ]
> ]
>
> It can be downloaded from here:
>
> http://97.107.135.89/www.hmkdesign.dk/rebol/vid/src/builds/vid-ext-kit.r
>
> --
> Regards,
> Henrik Mikael Kristensen
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