Move back the creation of the hidden field into the form element. Modified client validation client code to fallback into searching for the component's root element from the ice.event.target.

This fix caused a tabSet regression, tabPanes can no longer be changed.

This can be reproduced starting with Jenkins IF4 trunk Build# 1848:

• emporium: unable to select any other tabPane, such as "Auction Logs", "Chat", etc.
• showcase > tabSet > Proxy: unable to change tabs, and the validation message is not rendered when selecting a new tab without entering content; also the newly selected tab, as well as the previous tab are rendered as selected.
  There are no server errors or browser console errors.

Verified ICEfaces 4 trunk r48497. Tomcat 7, IE 11, 10, 9, 8, FF 43, Chrome 48.

Oops, I missed checking in a change. It's in now. Sorry about that.

Please make sure ACE components are freshly built and then re-test.

Tested with ICEfaces 4 trunk r48493. The only solution that seemed to work was to add the <ace:ajax immediate="true"/> to the tabset.
Using <ace:tabSet immediate=true > fails. The attached screenshot 1.png shows the outcome of trying to change to tab 2 if there is a validator invoked.

Modified ImmediateComponentCollector to detect the 'immediate' submit marker on UIInput, UICommand components and also on any component that implements the isImmediate() method.

This will allow to mark the tab set with the 'immediate=true' attribute and thus avoid the blocking of the submit by the client validation when validation fails. Adding <ace:ajax immediate="true"/> to the tabset will also work.

Added this as a Known Issue to http://www.icesoft.org/wiki/display/ICE/TabSet for now.

This issue still exists with ICEfaces 4 trunk r47027.
New test application (/ICE-10894.jsf) added to:
http://dev.icesoft.com/svn/repo/qa/trunk/Regression-Icefaces4/Sparkle/Nightly/tabSet