THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
Feel free to play here!
Testing...
In your java:
import wicket.markup.html.WebComponent; import wicket.model.IModel; import wicket.model.Model; import wicket.AttributeModifier; import wicket.Component; ... WebComponent c = new WebComponent( "mycss" ); IModel model = new Model() { public Object getObject( Component c ) { if ( someConditionIsTrue ) return "stylesheetx.css"; else return "stylesheety.css"; } }; c.add( new AttributeModifier( "href", model ) ); add( c );