[development] Awesome form building UI

[Nedjo Rogers]

> So....how come all these damn form builders are subscription-based 
> proprietary bits of nonsense? Chris, what about gathering some funds  to 
> make a general purpose form building library, which can then be  hooked 
> into various open source systems underneath?

We could do this fairly handily using a combination of the wForms and Freja 
libraries, both GPL. They're what drives:

http://www.formassembly.com/

Freja does client-side content generation with XSLT. wForms provides various 
forms-related functionality--repeated form sections, client-side validation, 
multiple pages, etc.

Sample form building interface (this UI isn't GPL):

http://www.formassembly.com/form-builder.php

The approach would be similar to what is done on formassembly, except that 
we would use an XML encoding of our $forms arrays:
* serialize our $forms arrays as XML
* write XSL to render the form XML into wForms format
* build forms using wForms, updating XML dataset, which is then unserialized 
into a $form array.

I've included a module for using wForms in Drupal in the Javascript Tools 
package, http://drupal.org/node/57285. At Goodstorm we're using it to 
produce a multi-page registration wizard.