Action to support forms by building all of the elements used to represent form controls.

  Action to support forms by building all of the elements
used to represent form controls. This will process
the <INPUT>, <TEXTAREA>, <SELECT>,
and <OPTION> tags. The element created by
this action is expected to have the attribute
StyleConstants.ModelAttribute set to
the model that holds the state for the form control.
This enables multiple views, and allows document to
be iterated over picking up the data of the form.
The following are the model assignments for the
various type of form elements.

Element Type	Model Type
input, type button	DefaultButtonModel
input, type checkbox	JToggleButton.ToggleButtonModel
input, type image	DefaultButtonModel
input, type password	PlainDocument
input, type radio	JToggleButton.ToggleButtonModel
input, type reset	DefaultButtonModel
input, type submit	DefaultButtonModel
input, type text or type is null.	PlainDocument
select	DefaultComboBoxModel or an DefaultListModel, with an item type of Option
textarea	PlainDocument