Articles/SimplePortalIntegration: DemoPortletApplication.java

package com.itmill.toolkit.demo;

import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpSession;

import com.itmill.toolkit.Application;
import com.itmill.toolkit.service.ApplicationContext.TransactionListener;
import com.itmill.toolkit.terminal.gwt.server.WebApplicationContext;
import com.itmill.toolkit.ui.FormLayout;
import com.itmill.toolkit.ui.Label;
import com.itmill.toolkit.ui.Window;

public class DemoPortletApplication extends Application {

        private Label portletMode;
        private Label windowState;
        private Label userPrincipal;
        private Label userInfo;

        public void init() {
                // init main window, add labels
                Window main = new Window();
                setMainWindow(main);
                FormLayout layout = new FormLayout();
                main.addComponent(layout);

                portletMode = new Label();
                portletMode.setCaption("PortletMode: ");
                layout.addComponent(portletMode);

                windowState = new Label();
                windowState.setCaption("WindowState: ");
                layout.addComponent(windowState);

                userPrincipal = new Label();
                userPrincipal.setCaption("UserPrincipal: ");
                layout.addComponent(userPrincipal);

                userInfo = new Label();
                userInfo.setCaption("User info: ");
                layout.addComponent(userInfo);
                userInfo.setContentMode(Label.CONTENT_PREFORMATTED);

                Label id = new Label("" + this);
                id.setCaption("Application instance: ");
                layout.addComponent(id);

                // Add a transaction listener, so we can update the portlet stuff
                initTransactionListener();
        }

        private void initTransactionListener() {
                getContext().addTransactionListener(new TransactionListener() {

                        public void transactionEnd(Application application,
                                        Object transactionData) {
                                // not used
                        }

                        public void transactionStart(Application application,
                                        Object transactionData) {
                                if (application == DemoPortletApplication.this) {
                                        // get the session
                                        HttpSession ses = ((WebApplicationContext) getContext())
                                                        .getHttpSession();
                                        // the portlet has stored it's info there:
                                        DemoPortlet.PortletInfo p = (DemoPortlet.PortletInfo) ses.getAttribute(ses
                                                        .getServletContext().getServletContextName()
                                                        + "/DemoPortletApplication");
                                        if (p == null) {
                                                // not found, try w/o application name
                                                p = (DemoPortlet.PortletInfo) ses.getAttribute(ses
                                                                .getServletContext().getServletContextName()+"/");
                                        }

                                        if (p != null) {
                                                // update labels
                                                portletMode.setValue(p.getPortletMode());
                                                windowState.setValue(p.getWindowState());
                                                userPrincipal.setValue(p.getUserPrincipal());
                                                Map uinfo = p.getUserInfo();
                                                if (uinfo != null) {
                                                        String s = "";
                                                        for (Iterator it = uinfo.keySet().iterator(); it
                                                                        .hasNext();) {
                                                                Object key = it.next();
                                                                Object val = uinfo.get(key);
                                                                s += key + ": " + val + "\n";
                                                        }
                                                        userInfo.setValue(s);
                                                } else {
                                                        userInfo.setValue("-");
                                                }
                                        } else {
                                                // portlet not started
                                        }
                                }
                        }

                });

        }
}