import org.antlr.stringtemplate.*;
import org.antlr.stringtemplate.misc.*;

public abstract class Page {
    /** My template library */
    static StringTemplateGroup templates =
	new StringTemplateGroup("mygroup", "templates");

    static {
        templates.setRefreshInterval(0); // don't cache templates
    }

    public void generate() {
	StringTemplate pageST = templates.getInstanceOf("page");
	StringTemplate bodyST = generateBody();
	pageST.setAttribute("body", bodyST);
	pageST.setAttribute("title", getTitle());

        /* Uncomment to view graphically
	StringTemplateTreeView viz = new StringTemplateTreeView("viz",pageST);
	viz.setVisible(true);
        */

        String page = pageST.toString(); // render page
	System.out.println(page);
    }
    public abstract StringTemplate generateBody();
    public abstract String getTitle();
}