Interface ThemeResolver

All Known Implementing Classes:
AbstractThemeResolver, CookieThemeResolver, FixedThemeResolver, SessionThemeResolver

@Deprecated(since="6.0") public interface ThemeResolver
as of 6.0 in favor of using CSS, without direct replacement
Interface for web-based theme resolution strategies that allows for both theme resolution via the request and theme modification via request and response.

This interface allows for implementations based on session, cookies, etc. The default implementation is FixedThemeResolver, simply using a configured default theme.

Note that this resolver is only responsible for determining the current theme name. The Theme instance for the resolved theme name gets looked up by DispatcherServlet via the respective ThemeSource, i.e. the current WebApplicationContext.

Use RequestContext.getTheme() to retrieve the current theme in controllers or views, independent of the actual resolution strategy.

Jean-Pierre Pawlak, Juergen Hoeller
See Also:
  • Method Details

    • resolveThemeName

      String resolveThemeName(HttpServletRequest request)
      Resolve the current theme name via the given request. Should return a default theme as fallback in any case.
      request - the request to be used for resolution
      the current theme name
    • setThemeName

      void setThemeName(HttpServletRequest request, @Nullable HttpServletResponse response, @Nullable String themeName)
      Set the current theme name to the given one.
      request - the request to be used for theme name modification
      response - the response to be used for theme name modification
      themeName - the new theme name (null or empty to reset it)
      UnsupportedOperationException - if the ThemeResolver implementation does not support dynamic changing of the theme