code: protected String buildTitle(final Component component) {
  		Component current = component;
  		final StringBuilder title = new StringBuilder();
  		while (current != null) {
  			final String currentTitle = getTitleIfKnownComponent(current);
  			if (currentTitle != null && currentTitle.length() != 0) {
  				if (title.length() != 0) {
  					title.insert(0, " - ");
  				}
  				title.insert(0, currentTitle);
  			}
  			current = current.getParent();
  		}
  
  		return title.length() != 0 ? title.toString() : null;
  	}
docs: Construit le titre à inclure dans l'impression/export.
  
  @param component
  Component
  @return String