OK. So mean like an Elevator Test kinda thing.
There are some one-line helper GUI utilities
to show info or ask simple questions:
wdinfo 'Title';'2 + 2 = ',":2+2 NB. shows an info box
wdquery 'Title';'Proceed?' NB. shows OK/Cancel box
wdselect 'Title';<;:'One Two Three' NB. choice box
Then there's a Window Driver system which helps
build fairly sophisticated UI screens and interactions
in an economical yet expressive way. The driver provides
a set of commands to create a form layout with controls
and means to communicate with the controls: setting and getting
values, parameters, etc. When an event occurs, a user-defined
handler is found based on naming conventions and the current
control values are made available as variable in the form locale.
Here's an example that translates Kip Murray's flavors to UI.
The layout is built using the friendly Form Editor.
NB. =========================================================
NB. ui flavors - simple J operations using window driver
LAYOUT=: 0 : 0
pc f;pn "Index Array Operations";
xywh 132 30 60 12;cc Iota button;cn "Index Array";
xywh 132 50 60 12;cc ItemSum button;cn "Item Sum";
xywh 132 70 60 12;cc PatialSums button;cn "Patial Sums";
xywh 6 8 50 11;cc s1 static;cn "Shape";
xywh 66 7 60 12;cc Shape edit;
xywh 5 30 120 120;cc Result editm;
pas 6 6;pcenter;
rem form end;
)
f_run=: 3 : 0
wd LAYOUT NB. define form layout
wd 'set Shape *3 4' NB. initialize some values
wd 'setfont Result ',FIXFONT
wd 'pshow;'
)
f_close=: 3 : 0
wd'pclose'
)
NB. utility code
flatstr=: ,@:(,&(10{a.)"1)"2^:(0 >. #...@$ - 1:)
calc=: 1 : 0
flatstr ": u ". y
)
NB. event handling
f_Iota_button=: 3 : 0
wd'set Result *', i. calc Shape
)
f_ItemSum_button=: 3 : 0
wd'set Result *', +/@i. calc Shape
)
f_PatialSums_button=: 3 : 0
wd'set Result *', +/\...@i. calc Shape
)
f_run''
NB. =========================================================
> From: Kip Murray <[email protected]>
>
> In array programming, the J programmer learns to formulate his problems in
> terms
>
> of functions, operators and arrays -- that level of abstraction -- as
> illustrated in my 12 September "Flavor of J" post in the Programming forum.
> I
> am looking for an analogous discussion of J windows programming. Your
> discussion and example can be for a newcomer to windows programming, or for
> an
> experienced programmer who is considering J -- your choice!
>
> Oleg Kobchenko wrote:
> > Can you provide a few examples how "flavors" are specified or described
> > in other frameworks? 'Cause this is too general.
> >
> >
> >
> > ----- Original Message ----
> >> From: Kip Murray
> >>
> >> How do you describe the "flavor" of J windows programming? "Flavor" has
> >> to
> do
> >> with ingredients and recipes: how does a J windows programmer
> >> conceptualize
> his
> >> problems? Can you give a description and an introductory example?
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