World: r3wp

thanks to Gregg for a really good session on reviewing the validation 
scheme. this is precisely what I needed.

some notes:


- validators 'not-empty and 'selected are overlapping, so maybe 'selected 
should not work on blocks but simply check if the output of the face 
is NONE

- using the 'only-positive validator alone will cause a crash, if 
the input is not a number and if the previous validator is not a 
check for number values. I designed it like this to indicate that 
the value may not be anything but a number, but there is a disagreement 
over whether incorrect usage should cause a crash.

only-positive: I would expect an implicit check for a number. If 
it fails, it's not positive.

The message to the user should be: Not a number.

Robert, the idea is that only-positive does no numeric checks as 
there is another validator that specifically does this. If that validator 
fails, only-positive is never evaluated.

Hence with the correct setup, you would get a not a number error.

you can combine multiple validators in sequence for a face and the 
first one that fails, stops validation for that face.

Yes, I understand. I would expect that only-positive than combines 
two validators: is-number & greater-zero as a pre-set validator.

ok, I guess we need a way to combine validators

new build released at http://rebol.hmkdesign.dk/files/r3/gui/r3-gui.r3


This one contains material system and some bug fixes. Requires A105.

view [ title "hello world" button "test" print "hello" ]

does not show the button until you resize the window

It enforces a minimum size window but only after you first resize 
it

it seems to be a broken exe. a new one should be distributed.

It's one I compiled myself

Also size must be a pair?  It complains if I just use an integer

Are these docs still valid? http://www.rebol.com/r3/docs/gui/guide.html

probably not for groups and panels

buttons don't change material/gradient, when pressed?

graham's code - apart from the initial window size, being collapsed, 
it also behaves strangerly resize size - the button keeps tight to 
bottom-left corner, when resizing ...

Pekr, material is early test. Just seeing if it works.

and the resizing? do we need to set some size of the screen?

There should not be any issues there.

Am I doing anything wrong? Why the button moves down = "is attached" 
to the bottom left corner?

 view [title "test" button "OK" do [print "ok"]]

try removing the title

Trying removing the title does not fix the problem, no? :-) I put 
the title there on purpose, to show the behaviour :-)

OK, when removing Title .... then my next question is - the window 
size is so small, that the button is not visible, unless I resize 
for the first time. But - Graham already reported that ....

btw - is there some easy way to list the widgets/styles available?

next possible issue - when I maximize the window - it moves up to 
the upper left corner, but then it stretches so that the window does 
surround only the button ... it should not be like that imo? But 
it depends, of course ...

there is a method to restrict the window size. perhaps it is a bit 
too aggressive, but the option is needed in some cases.

words-of guie/styles

The GUI is highly non-functional, we imo need to wait few more releases 
...

I get some leakage in the fields - strange chars .... IIRC someone 
already pointed out the issue, anc Cyphre suggested some solution 
- can't remember now ...

In clean R3 A105 session, I do following to get following image:

do %r3-gui.r3
view [field] ; resize needed to see anything ...

result:
http://www.xidys.com/pekr/rebol/a105-field-strange-chars.jpg

Any idea?

bug

'check works ... but 'radio shows some strange shape ... is that 
all due to incomplete material system definitions e.g.?

In that field, if you press backspace, do you get a crash?

only 3 styles are written for material system so far

And plese - tell me if you are interested in such hints, as it might 
get you nervous :-) We like pre-releases, but so far my feeling is 
- Gabs VID3 was able to show us Image Lab demo - resizing IIRC, drag 
and drop, alpha channels, changing mouse pointer ... then came the 
VID3.4 from Carl, it felt lightweight, but did 70% of Gabs VID? And 
now we are seing some XY percent of functionality of Carl's VID :-) 
I just hope it' still just work-in-progress, but I really wonder 
if stuff like validation is important now, in a state where there 
is very few usefull styles?

Henrik - dunno what you mean by crash - but no, R3 console does not 
crash, but I get rebol level crash:

handler added
** Script error: cannot use pick on none! value

** Where: second all resize-text-face remove-text-face switch either 
do-text-key

 if actor all do-style until either do-event do-event either applier 
 wake-up loo
p applier wait do-events if view

** Near: second get-facet face 'viewport-size tgob/size/x: face/facet...

>>

(that was caused by pressing the back-space in a field widget ....

Petr, as said: We release our stuff, it's early work and it's not 
of much use yet. But we still do it.

... but maybe I should use some precompiled R3 executable, to aviod 
possible wrong settings of my enviroment? But  - I have not found 
any in the link posted here ...

Pekr, it's ok, keep posting bugs.

As long as we don't explicitly state: Please give it a try and provide 
us feedback on A, B and C things might not work at all. you can give 
feedback but don't expect that we always care about it.

Cyphre says the bug is due to a missing box model. Will be fixed 
soon.

This is all in high flux at the moment.

ok, whatever the box model means in new gui :-)

Robert - this is OK with me. In the past, I worked with Cyphre, Romano, 
to do personal testing ... lot's of errors and misconceptions caught 
on my side. In such early phase, I might cause a flood, so if you 
want, I might stop for few more releases ...

It is just there is not much to test, if there is only 'check working 
so far for me :-)

I simply tried to go via http://www.rebol.com/r3/docs/gui/guide.html
, and to test those examples ...