Serves Freemarker template representation of login form.

LoginFormResource.java

import java.util.HashMap;
import java.util.Map;

import javax.inject.Inject;

import org.restlet.data.Form;
import org.restlet.data.MediaType;
import org.restlet.ext.crypto.CookieAuthenticator;
import org.restlet.representation.Representation;
import org.restlet.resource.Get;


/**
 * Form resource for supplying credentials.
 */
public class LoginFormServerResource extends ServerResource {

    static final String INITIAL_USER_VALUE = "initialUserValue";

    private static final String AUTH_APP_PATH      = "/auth";
    private static final String TEMPLATE           = "auth/LoginForm.ftl";


    @Inject private CookieAuthenticator auth;


    @Get public Representation showForm() {
        Form query = getQuery();

        String redirectQueryName   = auth.getRedirectQueryName();
        String redirectQueryValue  = query.getFirstValue(redirectQueryName);
        String loginPath           = AUTH_APP_PATH + auth.getLoginPath();
        String initialUserValue    = query.getFirstValue(INITIAL_USER_VALUE, "");

        Map<String, String> dataModel = new HashMap<String, String>();

        dataModel.put("redirectQueryName",    redirectQueryName);
        dataModel.put("redirectQueryValue",   redirectQueryValue);
        dataModel.put("loginPath",            loginPath);
        dataModel.put("identifierFormName",   auth.getIdentifierFormName());
        dataModel.put("secretFormName",       auth.getSecretFormName());
        if (!"".equals(initialUserValue)) {
            dataModel.put(INITIAL_USER_VALUE, initialUserValue);
        }

        return newTemplateRepresentation(TEMPLATE, dataModel, MediaType.TEXT_HTML);
    }
}