The pieces

DataForm

Which would look something like...

Name	Type	Size	Values	Tooltip	Attributes
Foo	mydata+input1			editable
Bar	mydata+input2			editable
AutoFoo?	mydata+response1			read-only, populated automatically based on inputs...
AutoBar?	mydata+response2			"
AutoCat?	mydata+response3			"

Foswiki::Form::Mydata

A custom Foswiki::Form type created at lib/Foswiki/Form/Mydata.pm

• Calls Foswiki::Func::addToZone() to add javascript to the page, and produces an HTML form element appropriately decorated for the javascript to recognise
• This javascript would detect changes in the editable fields, and update the read-only fields

Foswiki::Plugins::MyPlugin

A plugin (see EmptyPlugin? for an example) which consists of at least lib/Foswiki/Plugins/MyPlugin.pm

• Inside initPlugin(), calls Foswiki::Func::registerRESTHandler() to register a /bin/rest/MyPlugin/getData handler to handle requests from the javascript for response data