com.vaadin.server
Class CustomizedSystemMessages

java.lang.Object
  com.vaadin.server.SystemMessages
      com.vaadin.server.CustomizedSystemMessages

All Implemented Interfaces:

java.io.Serializable

public class CustomizedSystemMessages
extends SystemMessages
implements java.io.Serializable

Contains the system messages used to notify the user about various critical situations that can occur.

Vaadin gets the SystemMessages from your application by calling a static getSystemMessages() method. By default the Application.getSystemMessages() is used. You can customize this by defining a static MyApplication.getSystemMessages() and returning CustomizedSystemMessages. Note that getSystemMessages() is static - changing the system messages will by default change the message for all users of the application.

The default behavior is to show a notification, and restart the application the the user clicks the message.
Instead of restarting the application, you can set a specific URL that the user is taken to.
Setting both caption and message to null will restart the application (or go to the specified URL) without displaying a notification. set*NotificationEnabled(false) will achieve the same thing.

The situations are:

Session expired: the user session has expired, usually due to inactivity.

Communication error: the client failed to contact the server, or the server returned and invalid response.

Internal error: unhandled critical server error (e.g out of memory, database crash)

Out of sync: the client is not in sync with the server. E.g the user opens two windows showing the same application, but the application does not support this and uses the same Window instance. When the user makes changes in one of the windows - the other window is no longer in sync, and (for instance) pressing a button that is no longer present in the UI will cause a out-of-sync -situation.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.server.SystemMessages

authenticationErrorCaption, authenticationErrorMessage, authenticationErrorNotificationEnabled, authenticationErrorURL, communicationErrorCaption, communicationErrorMessage, communicationErrorNotificationEnabled, communicationErrorURL, cookiesDisabledCaption, cookiesDisabledMessage, cookiesDisabledNotificationEnabled, cookiesDisabledURL, internalErrorCaption, internalErrorMessage, internalErrorNotificationEnabled, internalErrorURL, sessionExpiredCaption, sessionExpiredMessage, sessionExpiredNotificationEnabled, sessionExpiredURL

Constructor Summary

CustomizedSystemMessages()

Method Summary

void	setAuthenticationErrorCaption(java.lang.String authenticationErrorCaption) Sets the caption of the notification.
void	setAuthenticationErrorMessage(java.lang.String authenticationErrorMessage) Sets the message of the notification.
void	setAuthenticationErrorNotificationEnabled(boolean authenticationErrorNotificationEnabled) Enables or disables the notification.
void	setAuthenticationErrorURL(java.lang.String authenticationErrorURL) Sets the URL to go to when there is a authentication error.
void	setCommunicationErrorCaption(java.lang.String communicationErrorCaption) Sets the caption of the notification.
void	setCommunicationErrorMessage(java.lang.String communicationErrorMessage) Sets the message of the notification.
void	setCommunicationErrorNotificationEnabled(boolean communicationErrorNotificationEnabled) Enables or disables the notification.
void	setCommunicationErrorURL(java.lang.String communicationErrorURL) Sets the URL to go to when there is a communication error.
void	setCookiesDisabledCaption(java.lang.String cookiesDisabledCaption) Sets the caption of the "cookies disabled" notification.
void	setCookiesDisabledMessage(java.lang.String cookiesDisabledMessage) Sets the message of the "cookies disabled" notification.
void	setCookiesDisabledNotificationEnabled(boolean cookiesDisabledNotificationEnabled) Enables or disables the notification for "cookies disabled" messages.
void	setCookiesDisabledURL(java.lang.String cookiesDisabledURL) Sets the URL to redirect to when the browser has cookies disabled.
void	setInternalErrorCaption(java.lang.String internalErrorCaption) Sets the caption of the notification.
void	setInternalErrorMessage(java.lang.String internalErrorMessage) Sets the message of the notification.
void	setInternalErrorNotificationEnabled(boolean internalErrorNotificationEnabled) Enables or disables the notification.
void	setInternalErrorURL(java.lang.String internalErrorURL) Sets the URL to go to when an internal error occurs.
void	setSessionExpiredCaption(java.lang.String sessionExpiredCaption) Sets the caption of the notification.
void	setSessionExpiredMessage(java.lang.String sessionExpiredMessage) Sets the message of the notification.
void	setSessionExpiredNotificationEnabled(boolean sessionExpiredNotificationEnabled) Enables or disables the notification.
void	setSessionExpiredURL(java.lang.String sessionExpiredURL) Sets the URL to go to when the session has expired.

Methods inherited from class com.vaadin.server.SystemMessages

getAuthenticationErrorCaption, getAuthenticationErrorMessage, getAuthenticationErrorURL, getCommunicationErrorCaption, getCommunicationErrorMessage, getCommunicationErrorURL, getCookiesDisabledCaption, getCookiesDisabledMessage, getCookiesDisabledURL, getInternalErrorCaption, getInternalErrorMessage, getInternalErrorURL, getSessionExpiredCaption, getSessionExpiredMessage, getSessionExpiredURL, isAuthenticationErrorNotificationEnabled, isCommunicationErrorNotificationEnabled, isCookiesDisabledNotificationEnabled, isInternalErrorNotificationEnabled, isSessionExpiredNotificationEnabled

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CustomizedSystemMessages

public CustomizedSystemMessages()

Method Detail

setSessionExpiredURL

public void setSessionExpiredURL(java.lang.String sessionExpiredURL)

Sets the URL to go to when the session has expired.

Parameters:

sessionExpiredURL - the URL to go to, or null to reload current

setSessionExpiredNotificationEnabled

public void setSessionExpiredNotificationEnabled(boolean sessionExpiredNotificationEnabled)

Enables or disables the notification. If disabled, the set URL (or current) is loaded directly when next transaction between server and client happens.

Parameters:

sessionExpiredNotificationEnabled - true = enabled, false = disabled

setSessionExpiredCaption

public void setSessionExpiredCaption(java.lang.String sessionExpiredCaption)

Sets the caption of the notification. Set to null for no caption. If both caption and message are null, client automatically forwards to sessionExpiredUrl after timeout timer expires. Timer uses value read from HTTPSession.getMaxInactiveInterval()

Parameters:

sessionExpiredCaption - the caption

setSessionExpiredMessage

public void setSessionExpiredMessage(java.lang.String sessionExpiredMessage)

Sets the message of the notification. Set to null for no message. If both caption and message are null, client automatically forwards to sessionExpiredUrl after timeout timer expires. Timer uses value read from HTTPSession.getMaxInactiveInterval()

Parameters:

sessionExpiredMessage - the message

setAuthenticationErrorURL

public void setAuthenticationErrorURL(java.lang.String authenticationErrorURL)

Sets the URL to go to when there is a authentication error.

Parameters:

authenticationErrorURL - the URL to go to, or null to reload current

setAuthenticationErrorNotificationEnabled

public void setAuthenticationErrorNotificationEnabled(boolean authenticationErrorNotificationEnabled)

Enables or disables the notification. If disabled, the set URL (or current) is loaded directly.

Parameters:

authenticationErrorNotificationEnabled - true = enabled, false = disabled

setAuthenticationErrorCaption

public void setAuthenticationErrorCaption(java.lang.String authenticationErrorCaption)

Sets the caption of the notification. Set to null for no caption. If both caption and message is null, the notification is disabled;

Parameters:

authenticationErrorCaption - the caption

setAuthenticationErrorMessage

public void setAuthenticationErrorMessage(java.lang.String authenticationErrorMessage)

Sets the message of the notification. Set to null for no message. If both caption and message is null, the notification is disabled;

Parameters:

authenticationErrorMessage - the message

setCommunicationErrorURL

public void setCommunicationErrorURL(java.lang.String communicationErrorURL)

Sets the URL to go to when there is a communication error.

Parameters:

communicationErrorURL - the URL to go to, or null to reload current

setCommunicationErrorNotificationEnabled

public void setCommunicationErrorNotificationEnabled(boolean communicationErrorNotificationEnabled)

Enables or disables the notification. If disabled, the set URL (or current) is loaded directly.

Parameters:

communicationErrorNotificationEnabled - true = enabled, false = disabled

setCommunicationErrorCaption

public void setCommunicationErrorCaption(java.lang.String communicationErrorCaption)

Sets the caption of the notification. Set to null for no caption. If both caption and message is null, the notification is disabled;

Parameters:

communicationErrorCaption - the caption

setCommunicationErrorMessage

public void setCommunicationErrorMessage(java.lang.String communicationErrorMessage)

Sets the message of the notification. Set to null for no message. If both caption and message is null, the notification is disabled;

Parameters:

communicationErrorMessage - the message

setInternalErrorURL

public void setInternalErrorURL(java.lang.String internalErrorURL)

Sets the URL to go to when an internal error occurs.

Parameters:

internalErrorURL - the URL to go to, or null to reload current

setInternalErrorNotificationEnabled

public void setInternalErrorNotificationEnabled(boolean internalErrorNotificationEnabled)

Enables or disables the notification. If disabled, the set URL (or current) is loaded directly.

Parameters:

internalErrorNotificationEnabled - true = enabled, false = disabled

setInternalErrorCaption

public void setInternalErrorCaption(java.lang.String internalErrorCaption)

Sets the caption of the notification. Set to null for no caption. If both caption and message is null, the notification is disabled;

Parameters:

internalErrorCaption - the caption

setInternalErrorMessage

public void setInternalErrorMessage(java.lang.String internalErrorMessage)

Sets the message of the notification. Set to null for no message. If both caption and message is null, the notification is disabled;

Parameters:

internalErrorMessage - the message

setCookiesDisabledURL

public void setCookiesDisabledURL(java.lang.String cookiesDisabledURL)

Sets the URL to redirect to when the browser has cookies disabled.

Parameters:

cookiesDisabledURL - the URL to redirect to, or null to reload the current URL

setCookiesDisabledNotificationEnabled

public void setCookiesDisabledNotificationEnabled(boolean cookiesDisabledNotificationEnabled)

Enables or disables the notification for "cookies disabled" messages. If disabled, the URL returned by SystemMessages.getCookiesDisabledURL() is loaded directly.

Parameters:

cookiesDisabledNotificationEnabled - true to enable "cookies disabled" messages, false otherwise

setCookiesDisabledCaption

public void setCookiesDisabledCaption(java.lang.String cookiesDisabledCaption)

Sets the caption of the "cookies disabled" notification. Set to null for no caption. If both caption and message is null, the notification is disabled.

Parameters:

cookiesDisabledCaption - the caption for the "cookies disabled" notification

setCookiesDisabledMessage

public void setCookiesDisabledMessage(java.lang.String cookiesDisabledMessage)

Sets the message of the "cookies disabled" notification. Set to null for no message. If both caption and message is null, the notification is disabled.

Parameters:

cookiesDisabledMessage - the message for the "cookies disabled" notification