* when Action url is like string:${object_url}/Document_printout
and Document_printout is a Form Printout or OOo Template.
* even format parameter can be passed like:
string:${object_url}/Document_printout?format=pdf
Then pdf will be default format in format list on dialog
reviewed by Jerome

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@32291 20353a03-c40f-0410-a6d1-a30d3c3de9de