Patch for adding an "inline fields" feature

Quicksketch: thanks again for your tireless work on this project and other contributions to the Drupal community. I am the author of the Webform CiviCRM integration module and I appreciate the hooks you have added to this branch which make such integration possible.

One of the most asked-for features with webforms (and drupal forms in general) I have come across is the ability to place multiple fields on the same line, i.e:

First Name ______________ Middle Name ________________ Last Name __________________

To my knowledge there is no easy way to do this, although certainly it can be done. The current options I am aware of:

1. Writing custom CSS to target the particular fields you want to inline
2. Writing a template override which generates table markup or css wrappers around the fields you want to inline
3. Installing the arrange_fields module and drag-dropping your fields inline

The first two options require custom coding and therefore exclude most users. The third is unfortunately too problematic for me to recommend in most situations. webform_conditional is fundamentally incompatible with some rather important things (such as fieldsets, conditional fields, non-js browsers, and collapsible fieldsets).

My idea is to follow the example of Views and provide a simple option to display fields inline via the Webform GUI. I believe this can be achieved by adding a checkbox to $form['extra'] on the webform_component_edit_form. Checking the box would cause a CSS class 'webform-inline' to be added to the element's wrapper when displayed. We would then add to the module's css file to display those divs as either float:left or display:inline-block (not sure which is best).

So, does this sound reasonable to you, and would you be willing to review such a patch?

I've done a bit more work on the above module and published it as Webform Layout. It creates a container that allows fields to be arranged in rows and columns. I hope people will find it useful.