specifies a button control which can execute external submissions
The model of the control has to support the ::com::sun::star::form::component::SubmitButton
service.
The control is clickable. When clicked (by mouse or keyboard, or programmatically),
the following happens:
Any ::com::sun::star::form::submission::XSubmissionVetoListeners registered
at the component are given the chance to veto the submission.
The model of the control is examined for an external submission object. That is,
::com::sun::star::form::submission::XSubmissionSupplier::getSubmission
is called at the model.
If there is such a submission object, its
::com::sun::star::form::submission::XSubmission::submit method is invoked.
If there is no external submission, the parent object of the model is examined
for the presence of the ::com::sun::star::form::XSubmit interface. If it
is present, it's ::com::sun::star::form::XSubmit::submit method is
invoked.
Since the parent object of a submit button can only be a ::com::sun::star::form::component::Form,
this means that SubmitButtons are also able to submit ::com::sun::star::form::component::HTMLForms.
