layout: tag-developers title: Tag Developers Guide

Selecting Themes

Themes can be selected using several different rules, in this order:

  1. The theme attribute on the specific tag
  2. The theme attribute on a tag's surrounding form tag
  3. The page-scoped attribute named theme
  4. The request-scoped attribute named theme
  5. The session-scoped attribute named theme
  6. The application-scoped attribute named theme
  7. The struts.ui.theme property in struts.xml (defaults to xhtml)

See Can I change theme on a per-page basis page for using scoped theme attribute.

Tips

  • To override an entire form's theme, change the “theme” attribute of the form. (Convenient for using the ajax theme for specific forms, for example.)
  • To support user-selected themes, set the theme in the user's session.
  • To change the theme for the entire application, modify the struts.xml.