Hi all.
On Wed, 12 Feb 2014, Peter Caffin wrote:
> I've resolved the issue though, so all's well, and I'll write it up for
> posting here shortly.
Essentially, as we can't directly "grid forget" a la Tk, the next best
option is to re-assign the containers to another location. In this
case, a minimised Window.
// Hidden Widget
Hidden = new qx.ui.window.Window("If you can see this, it's a bug");
Hidden.setLayout(new qx.ui.layout.VBox(10));
Hidden.minimize();
this.getRoot().add(Hidden);
The listbox has a listener added that:
(1) Checks what's been chosen:
lang = LB3000.getSelection()[0].getLabel();
(2) Calls function __testSetActivateLang(lang).
Our __testSetActivateLang does three things:
(a) Add the widgets presently in the grid to the hidden window:
Hidden.add(box3_1[ACTIVELANG]);
Hidden.add(box3_2[ACTIVELANG]);
(b) Now that those grid locations are vacated, we can move the new
ones in:
page3.add(box3_1[lang],{row:0,column:1});
page3.add(box3_2[lang],{row:1,column:1,rowSpan:10});
(c) The chosen lang is now the active one:
ACTIVELANG = lang;
That's really about all there is to it.
While my web app is a while away from being ready to show off, here's
a small sized (1.6M) video of the selector in action:
http://pc.autons.net/stuff/Listbox-Page-Selection-video.m4v
Is it worth the effort? Well, I think the result looks quite nice and
quite intuitive for the end-user -- especially for the number of
"pages" that may potentially be under its control.
Thanks all.
Also, special thanks to everyone involved in developing Qooxdoo.
For many many years I'd been putting off learning Javascript because
of its "write once, rewrite everywhere" early days, and jQuery never
grabbed me -- it seemed like a bucket full of oddly shaped widgets,
needing lots of customisation to look like they belonged together.
Qooxdoo Desktop gives me the same sort of control over a UI that I'm
used to when I develop Tk desktop apps, in a consistent set of themes,
also like what I'm used to with Tk. I really never expected that from
Javascript :)
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