> > From: bob therriault <[email protected]>
> > Sent: Monday, April 27, 2009 1:20:09 PM
> >
> > <http://www.jsoftware.com/pipermail/programming/2009-April/014508.html>
> >
> > Recently I posted the following script to the chat forum, as my
> > previous post to this forum was unsuccessful ( resubscribing seemed
> > to fix this). It is meant to allow a tacit expression to be viewed
> > in a number of formats. It is not complex, but did allow me to
> > stretch my abilities with the form editor (my first version
> > displayed in an isigraph, until I realized that listboxes would
> > automatically include trackbars for oversized displays).
> >
> > 1. Any comments on my approach and style are welcome. I seek
> > guidance.
>
> > From: "Sherlock, Ric" <[email protected]>
> > Sent: Tuesday, April 28, 2009 4:09:40 PM
> >
> > <http://www.jsoftware.com/pipermail/programming/2009-April/014542.html>
> >
> > Here is a slightly different take on your script. The biggest
> > differences:
> >
> > * the display verb takes a right argument
> > * It uses the Unicode box drawing chars if specified by the user's
> > session.
> > wd 'set tdisp *', ,LF,~"1 u...@ucpboxdraw_jijs_"1 ":STYLE <'ZZZ'
> > * It simplifies the event handlers for the radiobuttons by reading
> > which one is selected in the update verb.
>
> From: Oleg Kobchenko
> Sent: Saturday, 2 May 2009 21:14
> <http://www.jsoftware.com/pipermail/programming/2009-May/014604.html>
>
> Here's the script taken from Ric with "a few" changes.
>
> There are two stages in APL/J programming: solve the problem
> and then rewrite the code until it cannot be any shorter. :)
>
> * no comments unless absolutely unnecessary or revise code
> * show your intention with code and naming, see "display=: ..."
> * use first indent instead of flower boxing
> * /!\ different verbs for different APIs: cannot use the same
> for user API and event handling
> * in general, streamline call flow: trace display..update paths
> * initialize control names in form locale when calling a handler
> verb outside event, such as when form is created ("syschild" and
> "box")
> * no need for "Close" button, window frame already has one
> * "Cancel" key is for child dialogs, in main form, use Cmd+W or Alt+F4
> * use array of control names to assign event handlers programmatically
> * typical use exemplified, as in: display '+/ % #'
> * employ "once and only once", see how syschild assigned and next line
> * clear traces of globals to avoid error on first use
> * "display" name is too generic, should be in style of "disprep" or so
> * finally: (note to self) test ad lib changes before sending :)
>
Thanks Oleg. Very instructive as always!
Below I have added the idea of displaying multiple styles at once to the form.
I had to go back to using wd 'qd' to get the status of all checkboxes though.
NB.========================================================================
coerase<'rgtVisual' NB. debug - clear traces of globals
coclass 'rgtVisual'
NB. ---------------------------------------------------------
NB. This script creates a form that takes tacit sentences
NB. entered by the user in a text box and displays the
NB. selected format in a listbox.
NB. ---------------------------------------------------------
styles=: (4 : 0)"0 _
".'zzz=. ' , y
res=. 5!: x <'zzz'
<LF,~ , ,&l...@ucpboxdraw_jijs_"1 ": res
)
DISPLAY=: 0 : 0
pc display dialog;
xywh 9 156 216 22;cc box edit topmove rightmove bottommove;
xywh 248 24 60 11;cc cbFormatBox checkbox leftmove rightmove;cn "Box Format";
xywh 248 40 60 11;cc cbFormatLinear checkbox leftmove rightmove group;cn
"Linear Format";
xywh 248 55 60 11;cc cbFormatTree checkbox leftmove rightmove group;cn "Tree
Format";
xywh 248 72 60 11;cc cbFormatParens checkbox leftmove rightmove group;cn
"Parens Format";
xywh 240 11 95 80;cc format groupbox leftmove rightmove;cn "Display Style";
xywh 0 0 225 150;cc tdisp editm ws_hscroll ws_vscroll es_readonly rightmove
bottommove;
pas 6 6;pcenter;
rem form end;
)
FORMATS=: ;:'Box Linear Tree Parens'
RBFORMAT=: 'cbFormat'&,each FORMATS
display_run=: 3 : 0
wd DISPLAY
wd 'set box *',y
wd 'setfont box ',FIXFONT,'; setfocus box;'
wd 'setfont tdisp ',FIXFONT,'; setenable tdisp 1;'
syschild=: 0{::RBFORMAT
wd 'set ',syschild,' 1;'
box=: y
update ''
wd 'pshow;'
)
display_resume=: 3 : 0
wd 'psel display'
wd 'set box *',box=: y
update''
)
display_close=: 3 : 0
wd'pclose'
)
update=: 3 : 0
try.
sidx=. 2 5 4 6 #~ 99".> RBFORMAT wdget wd 'qd'
wd 'set tdisp *', utf8 ; sidx styles box
catch.
wd 'set tdisp *',13!:12 ''
end.
)
display_box_button=: update
('display_'&,each RBFORMAT,each<'_button')=: update
display=: display_run`display_res...@.((<'display') e. {."1...@wdforms)
display_z_=: display_rgtVisual_
display '+/ % #'
NB.========================================================================
----------------------------------------------------------------------
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