Rails spinoffs - Sep 2006 - Swap between 2 combo (html select multple)

Hi,
I would like if anybody has already developed swap bettween to html select
multiple, with scriptaculous.
I would like do like this http://cyberdummy.co.uk/test/dd.php
but not with only ul and li. So I would like use 2 select multiple and plug
it a javascript control (with scriptaculous)
to manage swap with drag/drop like rico
http://openrico.org/rico/demos.page?demo=rico_drag_and_drop_custom_draggable
)

I have read at
http://wiki.script.aculo.us/scriptaculous/revision/EffectsTreasureChest?rev=14,
we must develop customizable drag, but how use with 2 combos select
multiple?

Thank you for your response.

Regards Angelo


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Angelo zerr a écrit :
> Hi,
> I would like if anybody has already developed swap bettween to html
> select multiple, with scriptaculous.
> I would like do like this http://cyberdummy.co.uk/test/dd.php
> <http://cyberdummy.co.uk/test/dd.php>
> but not with only ul and li. So I would like use 2 select multiple and
> plug it a javascript control (with scriptaculous)
> to manage swap with drag/drop like rico
>
http://openrico.org/rico/demos.page?demo=rico_drag_and_drop_custom_draggable)
All those examples do *not* use select controls.  The Rico one only
kinda emulates a listbox, when it is actually a scrollable div with
internal spans (built in JS, no less!).
> I have read at
>
http://wiki.script.aculo.us/scriptaculous/revision/EffectsTreasureChest?rev=14
>
<http://wiki.script.aculo.us/scriptaculous/revision/EffectsTreasureChest?rev=14>,
> we must develop customizable drag, but how use with 2 combos select
> multiple?
I''m not too sure whether this will be simple enough to be worth it. 
You
might end up having to rewrite the whole D''n''D logic based on
mouse
events on the two controls, which, again, might not be as
browser-portable as you''d like.

Before going further down that road, why exactly do you need select
multiples?  Can''t you emulate this some other way?

-- 
Christophe Porteneuve a.k.a. TDD
"[They] did not know it was impossible, so they did it." --Mark Twain
Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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Hi ,
thank you for your reponse.
I would like use html select multiple to store it items. I''m
developping
with Struts and I''m planning to develop a taglib which generate
javascript
control (see at http://jscontrolstags.sourceforge.net/) for swap items
betwwen 2 combobox.
So I want populate the 2 combobox with standard HTML select (with struts you
can use <html:select). The javascript swap control will hide the 2 combo and
will display 2 divs with ul and li. When you post swap an item, the
javascript control will update select. After a post of form, you get options
selected coming from the standard html select.

But with the solution with div, I''m afraid to develop all events (like
Ctrl+A for select all items, Ctrl => select an item) into div although html
select multiple manage it.

Angelo


2006/9/28, Christophe Porteneuve
<tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org>:
>
>
> Angelo zerr a écrit :
> > Hi,
> > I would like if anybody has already developed swap bettween to html
> > select multiple, with scriptaculous.
> > I would like do like this http://cyberdummy.co.uk/test/dd.php
> > <http://cyberdummy.co.uk/test/dd.php>
> > but not with only ul and li. So I would like use 2 select multiple and
> > plug it a javascript control (with scriptaculous)
> > to manage swap with drag/drop like rico
> >
>
http://openrico.org/rico/demos.page?demo=rico_drag_and_drop_custom_draggable
> )
>
> All those examples do *not* use select controls.  The Rico one only
> kinda emulates a listbox, when it is actually a scrollable div with
> internal spans (built in JS, no less!).
>
> > I have read at
> >
>
http://wiki.script.aculo.us/scriptaculous/revision/EffectsTreasureChest?rev=14
> > <
>
http://wiki.script.aculo.us/scriptaculous/revision/EffectsTreasureChest?rev=14
> >,
> > we must develop customizable drag, but how use with 2 combos select
> > multiple?
>
> I''m not too sure whether this will be simple enough to be worth
it.  You
> might end up having to rewrite the whole D''n''D logic
based on mouse
> events on the two controls, which, again, might not be as
> browser-portable as you''d like.
>
> Before going further down that road, why exactly do you need select
> multiples?  Can''t you emulate this some other way?
>
> --
> Christophe Porteneuve a.k.a. TDD
> "[They] did not know it was impossible, so they did it." --Mark
Twain
> Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org
>
> >
>

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Hey Angelo, sorry for the delay,

Angelo zerr a écrit :
> So I want populate the 2 combobox with standard HTML select (with struts
> you can use <html:select). The javascript swap control will hide the 2
> combo and will display 2 divs with ul and li. When you post swap an
> item, the javascript control will update select. After a post of form,
> you get options selected coming from the standard html select.
> 
> But with the solution with div, I''m afraid to develop all events
(like
> Ctrl+A for select all items, Ctrl => select an item) into div although
> html select multiple manage it.
Trying to masquerade actual selects behind JS-generated DIVs might prove
quite a hurdle, especially in a cross-browser context.  Browsers relying
on native controls for selects, like IE6, will force you to work hard in
order not to have the selects overlap your DIVs...

Regarding events: you''d have to totally disable the native selects, and
indeed manage all your key-mouse logic manually inside the DIVs, that''s
for sure.  Maybe you can get some hints from the Autocompleter.Base code
in controls.js, which also simulates a drop-down based on a DIV with
ul/li inside.  It''s not *that* hard to code, don''t worry. 
Handling the
Ctrl and Shift keys, plus clicks, is rather straightforward and
cross-browser, AFAIK.

As a final note, you''d have to make your DIVs use the same tabindex as
the original selects, if any were defined (just some on-the-side thought).

''HTH

-- 
Christophe Porteneuve a.k.a. TDD
"[They] did not know it was impossible, so they did it." --Mark Twain
Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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Hi christophe,
no problem for your delay. I have found a control which manage selectable
item (Ctrl+Shift,...) at
http://www.remor.com/selectable-list/. I want use it, and add capability to
drag/drop items and filled
ul/li witj options of select.

As soon as I finsih my control I tell you.
Regards Angelo

2006/9/30, Christophe Porteneuve
<tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org>:
>
>
> Hey Angelo, sorry for the delay,
>
> Angelo zerr a écrit :
> > So I want populate the 2 combobox with standard HTML select (with
struts
> > you can use <html:select). The javascript swap control will hide
the 2
> > combo and will display 2 divs with ul and li. When you post swap an
> > item, the javascript control will update select. After a post of form,
> > you get options selected coming from the standard html select.
> >
> > But with the solution with div, I''m afraid to develop all
events (like
> > Ctrl+A for select all items, Ctrl => select an item) into div
although
> > html select multiple manage it.
>
> Trying to masquerade actual selects behind JS-generated DIVs might prove
> quite a hurdle, especially in a cross-browser context.  Browsers relying
> on native controls for selects, like IE6, will force you to work hard in
> order not to have the selects overlap your DIVs...
>
> Regarding events: you''d have to totally disable the native
selects, and
> indeed manage all your key-mouse logic manually inside the DIVs,
that''s
> for sure.  Maybe you can get some hints from the Autocompleter.Base code
> in controls.js, which also simulates a drop-down based on a DIV with
> ul/li inside.  It''s not *that* hard to code, don''t worry.
Handling the
> Ctrl and Shift keys, plus clicks, is rather straightforward and
> cross-browser, AFAIK.
>
> As a final note, you''d have to make your DIVs use the same
tabindex as
> the original selects, if any were defined (just some on-the-side thought).
>
> ''HTH
>
> --
> Christophe Porteneuve a.k.a. TDD
> "[They] did not know it was impossible, so they did it." --Mark
Twain
> Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org
>
> >
>

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