Examples of com.vaadin.Application$SystemMessages

com.vaadin.Application
Contains the system messages used to notify the user about various critical situations that can occur.
Customize by overriding the static {@link Application#getSystemMessages()} and returning{@link CustomizedSystemMessages}.

The defaults defined in this class are:
- sessionExpiredURL = null
- sessionExpiredNotificationEnabled = true
- sessionExpiredCaption = ""
- sessionExpiredMessage = "Take note of any unsaved data, and click here to continue."
- communicationErrorURL = null
- communicationErrorNotificationEnabled = true
- communicationErrorCaption = "Communication problem"
- communicationErrorMessage = "Take note of any unsaved data, and click here to continue."
- internalErrorURL = null
- internalErrorNotificationEnabled = true
- internalErrorCaption = "Internal error"
- internalErrorMessage = "Please notify the administrator.
  Take note of any unsaved data, and click here to continue."
- outOfSyncURL = null
- outOfSyncNotificationEnabled = true
- outOfSyncCaption = "Out of sync"
- outOfSyncMessage = "Something has caused us to be out of sync with the server.
  Take note of any unsaved data, and click here to re-sync."
- cookiesDisabledURL = null
- cookiesDisabledNotificationEnabled = true
- cookiesDisabledCaption = "Cookies disabled"
- cookiesDisabledMessage = "This application requires cookies to function.
  Please enable cookies in your browser and click here to try again.

        }
    }


    public void firePortletRenderRequest(Portlet portlet,
            RenderRequest request, RenderResponse response) {
        Application app = getPortletApplication(portlet);
        Set<PortletListener> listeners = portletListeners.get(app);
        if (listeners != null) {
            for (PortletListener l : listeners) {
                l.handleRenderRequest(request, new RestrictedRenderResponse(
                        response));

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        }
    }


    public void firePortletActionRequest(Portlet portlet,
            ActionRequest request, ActionResponse response) {
        Application app = getPortletApplication(portlet);
        Set<PortletListener> listeners = portletListeners.get(app);
        if (listeners != null) {
            for (PortletListener l : listeners) {
                l.handleActionRequest(request, response);
            }

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                out.print("<div>" + e + "</div>");
                ctx.setPortletApplication(this, null);
                return;
            }


            Application app = (Application) request
                    .getAttribute(Application.class.getName());
            ctx.setPortletApplication(this, app);
            ctx.firePortletRenderRequest(this, request, response);


        }

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        if (requestType == RequestType.STATIC_FILE) {
            serveStaticResources(request, response);
            return;
        }


        Application application = null;
        boolean transactionStarted = false;
        boolean requestStarted = false;


        try {
            // If a duplicate "close application" URL is received for an
            // application that is not open, redirect to the application's main
            // page.
            // This is needed as e.g. Spring Security remembers the last
            // URL from the application, which is the logout URL, and repeats
            // it.
            // We can tell apart a real onunload request from a repeated one
            // based on the real one having content (at least the UIDL security
            // key).
            if (requestType == RequestType.UIDL
                    && request.getParameterMap().containsKey(
                            ApplicationConnection.PARAM_UNLOADBURST)
                    && request.getContentLength() < 1
                    && getExistingApplication(request, false) == null) {
                redirectToApplication(request, response);
                return;
            }


            // Find out which application this request is related to
            application = findApplicationInstance(request, requestType);
            if (application == null) {
                return;
            }


            /*
             * Get or create a WebApplicationContext and an ApplicationManager
             * for the session
             */
            WebApplicationContext webApplicationContext = WebApplicationContext
                    .getApplicationContext(request.getSession());
            CommunicationManager applicationManager = webApplicationContext
                    .getApplicationManager(application, this);


            /* Update browser information from the request */
            updateBrowserProperties(webApplicationContext.getBrowser(), request);


            /*
             * Call application requestStart before Application.init() is called
             * (bypasses the limitation in TransactionListener)
             */
            if (application instanceof HttpServletRequestListener) {
                ((HttpServletRequestListener) application).onRequestStart(
                        request, response);
                requestStarted = true;
            }


            // Start the newly created application
            startApplication(request, application, webApplicationContext);


            /*
             * Transaction starts. Call transaction listeners. Transaction end
             * is called in the finally block below.
             */
            webApplicationContext.startTransaction(application, request);
            transactionStarted = true;


            /* Handle the request */
            if (requestType == RequestType.FILE_UPLOAD) {
                applicationManager.handleFileUpload(request, response);
                return;
            } else if (requestType == RequestType.UIDL) {
                // Handles AJAX UIDL requests
                Window window = applicationManager.getApplicationWindow(
                        request, this, application, null);
                applicationManager.handleUidlRequest(request, response, this,
                        window);
                return;
            }


            // Removes application if it has stopped (mayby by thread or
            // transactionlistener)
            if (!application.isRunning()) {
                endApplication(request, response, application);
                return;
            }


            // Finds the window within the application
            Window window = getApplicationWindow(request, applicationManager,
                    application);
            if (window == null) {
                throw new ServletException(ERROR_NO_WINDOW_FOUND);
            }


            // Sets terminal type for the window, if not already set
            if (window.getTerminal() == null) {
                window.setTerminal(webApplicationContext.getBrowser());
            }


            // Handle parameters
            final Map parameters = request.getParameterMap();
            if (window != null && parameters != null) {
                window.handleParameters(parameters);
            }


            /*
             * Call the URI handlers and if this turns out to be a download
             * request, send the file to the client
             */
            if (handleURI(applicationManager, window, request, response)) {
                return;
            }


            // Send initial AJAX page that kickstarts a Vaadin application
            writeAjaxPage(request, response, window, application);


        } catch (final SessionExpiredException e) {
            // Session has expired, notify user
            handleServiceSessionExpired(request, response);
        } catch (final GeneralSecurityException e) {
            handleServiceSecurityException(request, response);
        } catch (final Throwable e) {
            handleServiceException(request, response, application, e);
        } finally {
            // Notifies transaction end
            try {
                if (transactionStarted) {
                    ((WebApplicationContext) application.getContext())
                            .endTransaction(application, request);


                }


            } finally {

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        boolean requestCanCreateApplication = requestCanCreateApplication(
                request, requestType);


        /* Find an existing application for this request. */
        Application application = getExistingApplication(request,
                requestCanCreateApplication);


        if (application != null) {
            /*
             * There is an existing application. We can use this as long as the

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     * @throws ServletException
     * @throws MalformedURLException
     */
    private Application createApplication(HttpServletRequest request)
            throws ServletException, MalformedURLException {
        Application newApplication = getNewApplication(request);


        final WebApplicationContext context = WebApplicationContext
                .getApplicationContext(request.getSession());
        context.addApplication(newApplication);

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        final Collection<Application> applications = context.getApplications();


        // Search for the application (using the application URI) from the list
        for (final Iterator<Application> i = applications.iterator(); i
                .hasNext();) {
            final Application sessionApplication = i.next();
            final String sessionApplicationPath = sessionApplication.getURL()
                    .getPath();
            String requestApplicationPath = getApplicationUrl(request)
                    .getPath();


            if (requestApplicationPath.equals(sessionApplicationPath)) {
                // Found a running application
                if (sessionApplication.isRunning()) {
                    return sessionApplication;
                }
                // Application has stopped, so remove it before creating a new
                // application
                WebApplicationContext.getApplicationContext(session)

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            outWriter.close();
        } else if (requestType == RequestType.STATIC_FILE) {
            serveStaticResources((ResourceRequest) request,
                    (ResourceResponse) response);
        } else {
            Application application = null;
            boolean transactionStarted = false;
            boolean requestStarted = false;


            try {
                // TODO What about PARAM_UNLOADBURST & redirectToApplication??


                /* Find out which application this request is related to */
                application = findApplicationInstance(request, requestType);
                if (application == null) {
                    return;
                }


                /*
                 * Get or create an application context and an application
                 * manager for the session
                 */
                PortletApplicationContext2 applicationContext = PortletApplicationContext2
                        .getApplicationContext(request.getPortletSession());
                applicationContext.setResponse(response);


                PortletCommunicationManager applicationManager = applicationContext
                        .getApplicationManager(application);


                if (response instanceof RenderResponse
                        && applicationManager.dummyURL == null) {
                    /*
                     * The application manager needs an URL to the dummy page.
                     * See the PortletCommunicationManager.sendUploadResponse
                     * method for more information.
                     */
                    ResourceURL dummyURL = ((RenderResponse) response)
                            .createResourceURL();
                    dummyURL.setResourceID("DUMMY");
                    applicationManager.dummyURL = dummyURL.toString();
                }


                /* Update browser information from request */
                updateBrowserProperties(applicationContext.getBrowser(),
                        request);


                /*
                 * Call application requestStart before Application.init() is
                 * called (bypasses the limitation in TransactionListener)
                 */
                if (application instanceof PortletRequestListener) {
                    ((PortletRequestListener) application).onRequestStart(
                            request, response);
                    requestStarted = true;
                }


                /* Start the newly created application */
                startApplication(request, application, applicationContext);


                /*
                 * Transaction starts. Call transaction listeners. Transaction
                 * end is called in the finally block below.
                 */
                applicationContext.startTransaction(application, request);
                transactionStarted = true;


                /* Notify listeners */


                // Finds the window within the application
                Window window = null;
                synchronized (application) {
                    if (application.isRunning()) {
                        switch (requestType) {
                        case FILE_UPLOAD:
                            // no window
                            break;
                        case APPLICATION_RESOURCE:
                            // use main window - should not need any window
                            window = application.getMainWindow();
                            break;
                        default:
                            window = applicationManager.getApplicationWindow(
                                    request, this, application, null);
                        }
                        // if window not found, not a problem - use null
                    }
                }


                // TODO Should this happen before or after the transaction
                // starts?
                if (request instanceof RenderRequest) {
                    applicationContext.firePortletRenderRequest(application,
                            window, (RenderRequest) request,
                            (RenderResponse) response);
                } else if (request instanceof ActionRequest) {
                    applicationContext.firePortletActionRequest(application,
                            window, (ActionRequest) request,
                            (ActionResponse) response);
                } else if (request instanceof EventRequest) {
                    applicationContext.firePortletEventRequest(application,
                            window, (EventRequest) request,
                            (EventResponse) response);
                } else if (request instanceof ResourceRequest) {
                    applicationContext.firePortletResourceRequest(application,
                            window, (ResourceRequest) request,
                            (ResourceResponse) response);
                }


                /* Handle the request */
                if (requestType == RequestType.FILE_UPLOAD) {
                    applicationManager.handleFileUpload(
                            (ActionRequest) request, (ActionResponse) response);
                    return;
                } else if (requestType == RequestType.UIDL) {
                    // Handles AJAX UIDL requests
                    applicationManager.handleUidlRequest(
                            (ResourceRequest) request,
                            (ResourceResponse) response, this, window);
                    return;
                } else {
                    /*
                     * Removes the application if it has stopped
                     */
                    if (!application.isRunning()) {
                        endApplication(request, response, application);
                        return;
                    }


                    handleOtherRequest(request, response, requestType,
                            application, window, applicationContext,
                            applicationManager);
                }
            } catch (final SessionExpiredException e) {
                // TODO Figure out a better way to deal with
                // SessionExpiredExceptions
                System.err.println("Session has expired");
                e.printStackTrace(System.err);
            } catch (final GeneralSecurityException e) {
                // TODO Figure out a better way to deal with
                // GeneralSecurityExceptions
                System.err
                        .println("General security exception, should never happen");
                e.printStackTrace(System.err);
            } catch (final Throwable e) {
                handleServiceException(request, response, application, e);
            } finally {
                // Notifies transaction end
                try {
                    if (transactionStarted) {
                        ((PortletApplicationContext2) application.getContext())
                                .endTransaction(application, request);
                    }
                } finally {
                    if (requestStarted) {
                        ((PortletRequestListener) application).onRequestEnd(

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        boolean requestCanCreateApplication = requestCanCreateApplication(
                request, requestType);


        /* Find an existing application for this request. */
        Application application = getExistingApplication(request,
                requestCanCreateApplication);


        if (application != null) {
            /*
             * There is an existing application. We can use this as long as the

View Full Code Here

        }
    }


    private Application createApplication(PortletRequest request)
            throws PortletException, MalformedURLException {
        Application newApplication = getNewApplication(request);
        final PortletApplicationContext2 context = PortletApplicationContext2
                .getApplicationContext(request.getPortletSession());
        context.addApplication(newApplication, request.getWindowID());
        return newApplication;
    }

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