Examples of com.vaadin.server.SystemMessages

com.vaadin.server.SystemMessages
Contains the system messages used to notify the user about various critical situations that can occur.
Use {@link VaadinService#setSystemMessagesProvider(SystemMessagesProvider)}to customize.

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.

            VaadinResponse response) throws IOException {
        if (!ServletPortletHelper.isUIDLRequest(request)) {
            return false;
        }
        VaadinService service = request.getService();
        SystemMessages systemMessages = service.getSystemMessages(
                ServletPortletHelper.findLocale(null, null, request), request);


        service.writeStringResponse(response, JsonConstants.JSON_CONTENT_TYPE,
                VaadinService.createCriticalNotificationJSON(
                        systemMessages.getSessionExpiredCaption(),
                        systemMessages.getSessionExpiredMessage(), null,
                        systemMessages.getSessionExpiredURL()));


        return true;
    }

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     * @since 7.1
     * @return A JSON string
     */
    static String getUINotFoundErrorJSON(VaadinService service,
            VaadinRequest vaadinRequest) {
        SystemMessages ci = service.getSystemMessages(
                vaadinRequest.getLocale(), vaadinRequest);
        // Session Expired is not really the correct message as the
        // session exists but the requested UI does not.
        // Using Communication Error for now.
        String json = VaadinService.createCriticalNotificationJSON(
                ci.getCommunicationErrorCaption(),
                ci.getCommunicationErrorMessage(), null,
                ci.getCommunicationErrorURL());


        return json;
    }

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            uiConnectorTracker.markAllConnectorsClean();


            writer.write("\"meta\" : ");


            SystemMessages messages = ui.getSession().getService()
                    .getSystemMessages(ui.getLocale(), null);
            // TODO hilightedConnector
            new MetadataWriter().write(ui, writer, repaintAll, async, messages);
            writer.write(", ");

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            } catch (ServiceException e) {
                getLogger().log(Level.SEVERE,
                        "Could not get session. This should never happen", e);
                return;
            } catch (SessionExpiredException e) {
                SystemMessages msg = service.getSystemMessages(
                        ServletPortletHelper.findLocale(null, null,
                                vaadinRequest), vaadinRequest);
                sendNotificationAndDisconnect(
                        resource,
                        VaadinService.createCriticalNotificationJSON(
                                msg.getSessionExpiredCaption(),
                                msg.getSessionExpiredMessage(), null,
                                msg.getSessionExpiredURL()));
                return;
            }


            UI ui = null;
            session.lock();
            try {
                ui = service.findUI(vaadinRequest);
                assert UI.getCurrent() == ui;


                if (ui == null) {
                    sendNotificationAndDisconnect(resource,
                            UidlRequestHandler.getUINotFoundErrorJSON(service,
                                    vaadinRequest));
                } else {
                    callback.run(resource, ui);
                }
            } catch (final IOException e) {
                callErrorHandler(session, e);
            } catch (final Exception e) {
                SystemMessages msg = service.getSystemMessages(
                        ServletPortletHelper.findLocale(null, null,
                                vaadinRequest), vaadinRequest);


                AtmosphereResource errorResource = resource;
                if (ui != null && ui.getPushConnection() != null) {
                    // We MUST use the opened push connection if there is one.
                    // Otherwise we will write the response to the wrong request
                    // when using streaming (the client -> server request
                    // instead of the opened push channel)
                    errorResource = ((AtmospherePushConnection) ui
                            .getPushConnection()).getResource();
                }


                sendNotificationAndDisconnect(
                        errorResource,
                        VaadinService.createCriticalNotificationJSON(
                                msg.getInternalErrorCaption(),
                                msg.getInternalErrorMessage(), null,
                                msg.getInternalErrorURL()));
                callErrorHandler(session, e);
            } finally {
                try {
                    session.unlock();
                } catch (Exception e) {

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            } catch (ServiceException e) {
                getLogger().log(Level.SEVERE,
                        "Could not get session. This should never happen", e);
                return;
            } catch (SessionExpiredException e) {
                SystemMessages msg = service.getSystemMessages(
                        ServletPortletHelper.findLocale(null, null,
                                vaadinRequest), vaadinRequest);
                sendNotificationAndDisconnect(
                        resource,
                        VaadinService.createCriticalNotificationJSON(
                                msg.getSessionExpiredCaption(),
                                msg.getSessionExpiredMessage(), null,
                                msg.getSessionExpiredURL()));
                return;
            }


            UI ui = null;
            session.lock();
            try {
                VaadinSession.setCurrent(session);
                // Sets UI.currentInstance
                ui = service.findUI(vaadinRequest);
                if (ui == null) {
                    sendNotificationAndDisconnect(resource,
                            UidlRequestHandler.getUINotFoundErrorJSON(service,
                                    vaadinRequest));
                } else {
                    callback.run(resource, ui);
                }
            } catch (final IOException e) {
                callErrorHandler(session, e);
            } catch (final Exception e) {
                SystemMessages msg = service.getSystemMessages(
                        ServletPortletHelper.findLocale(null, null,
                                vaadinRequest), vaadinRequest);


                AtmosphereResource errorResource = resource;
                if (ui != null && ui.getPushConnection() != null) {
                    // We MUST use the opened push connection if there is one.
                    // Otherwise we will write the response to the wrong request
                    // when using streaming (the client -> server request
                    // instead of the opened push channel)
                    errorResource = ((AtmospherePushConnection) ui
                            .getPushConnection()).getResource();
                }


                sendNotificationAndDisconnect(
                        errorResource,
                        VaadinService.createCriticalNotificationJSON(
                                msg.getInternalErrorCaption(),
                                msg.getInternalErrorMessage(), null,
                                msg.getInternalErrorURL()));
                callErrorHandler(session, e);
            } finally {
                try {
                    session.unlock();
                } catch (Exception e) {

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            uiConnectorTracker.markAllConnectorsClean();


            writer.write("\"meta\" : ");


            SystemMessages messages = ui.getSession().getService()
                    .getSystemMessages(ui.getLocale(), null);
            // TODO hilightedConnector
            new MetadataWriter().write(ui, writer, repaintAll, async, messages);
            writer.write(", ");

View Full Code Here

            VaadinResponse response) throws IOException {
        if (!ServletPortletHelper.isUIDLRequest(request)) {
            return false;
        }
        VaadinService service = request.getService();
        SystemMessages systemMessages = service.getSystemMessages(
                ServletPortletHelper.findLocale(null, null, request), request);


        service.writeStringResponse(response, JsonConstants.JSON_CONTENT_TYPE,
                VaadinService.createCriticalNotificationJSON(
                        systemMessages.getSessionExpiredCaption(),
                        systemMessages.getSessionExpiredMessage(), null,
                        systemMessages.getSessionExpiredURL()));


        return true;
    }

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     * @since 7.1
     * @return A JSON string
     */
    static String getUINotFoundErrorJSON(VaadinService service,
            VaadinRequest vaadinRequest) {
        SystemMessages ci = service.getSystemMessages(
                vaadinRequest.getLocale(), vaadinRequest);
        // Session Expired is not really the correct message as the
        // session exists but the requested UI does not.
        // Using Communication Error for now.
        String json = VaadinService.createCriticalNotificationJSON(
                ci.getCommunicationErrorCaption(),
                ci.getCommunicationErrorMessage(), null,
                ci.getCommunicationErrorURL());


        return json;
    }

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        if (systemMessagesCache.containsKey(locale))
        {
            return systemMessagesCache.get(locale);
        }


        SystemMessages systemMessages = systemMessagesBean.getSystemMessages(locale);
        systemMessagesCache.put(locale, systemMessages);


        return systemMessages;
    }

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Related Classes of com.vaadin.server.SystemMessages

com.vaadin.server.communication.PushHandler

com.vaadin.server.communication.UidlRequestHandler

com.vaadin.server.communication.UidlWriter

ru.xpoft.vaadin.SpringVaadinSystemMessagesProvider

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