Class BeforeEvent

Constructor Detail

• BeforeEvent

  public BeforeEvent(NavigationEvent event,
                     Class<?> navigationTarget)

  Construct event from a NavigationEvent.

  Parameters:

  event - NavigationEvent that is on going

  navigationTarget - Navigation target

• BeforeEvent

  public BeforeEvent(Router router,
                     NavigationTrigger trigger,
                     Location location,
                     Class<?> navigationTarget,
                     UI ui)

  Constructs a new BeforeNavigation Event.

  Parameters:

  router - the router that triggered the change, not null

  trigger - the type of user action that triggered this location change, not null

  location - the new location, not null

  navigationTarget - navigation target class

  ui - the UI related to the navigation

Method Detail

• getLocation

  public Location getLocation()

  Gets the new location.

  Returns:

  the new location, not null

• getTrigger

  public NavigationTrigger getTrigger()

  Gets the type of user action that triggered this location change.

  Returns:

  the type of user action that triggered this location change, not null

• getSource

  public Router getSource()

  Overrides:

  getSource in class EventObject

• hasRerouteTarget

  public boolean hasRerouteTarget()

  Check if we have a reroute target.

  Returns:

  reroute target exists

• getRerouteTarget

  public NavigationHandler getRerouteTarget()

  Gets the reroute target to use if the user should be rerouted to some other view.

  Returns:

  an navigation handler

• rerouteTo

  public void rerouteTo(NavigationHandler rerouteTarget,
                        NavigationState targetState)

  Reroutes the navigation to use the provided navigation handler instead of the currently used handler.

  Parameters:

  rerouteTarget - the navigation handler to use, or null to clear a previously set reroute target

  targetState - the target navigation state of the rerouting

• rerouteTo

  public void rerouteTo(NavigationState targetState)

  Reroutes the navigation to the given navigation state.

  Parameters:

  targetState - the target navigation state of the rerouting, not null

• rerouteTo

  public void rerouteTo(Class<? extends Component> routeTargetType)

  Reroutes the navigation to show the given component instead of the component that is currently about to be displayed.

  Parameters:

  routeTargetType - the component type to display, not null

• rerouteTo

  public void rerouteTo(String route)

  Reroute to navigation component registered for given location string instead of the component about to be displayed.

  Parameters:

  route - reroute target location string

• rerouteTo

  public <T> void rerouteTo(String route,
                            T routeParam)

  Reroute to navigation component registered for given location string with given route parameter instead of the component about to be displayed.

  Type Parameters:

  T - route parameter type

  Parameters:

  route - reroute target location string

  routeParam - route parameter

• rerouteTo

  public <T> void rerouteTo(String route,
                            List<T> routeParams)

  Reroute to navigation component registered for given location string with given route parameters instead of the component about to be displayed.

  Type Parameters:

  T - route parameters type

  Parameters:

  route - reroute target location string

  routeParams - route parameters

• getRouteTargetType

  public Class<?> getRouteTargetType()

  Get the route target for rerouting.

  Returns:

  route target

• getNavigationTarget

  public Class<?> getNavigationTarget()

  Get the navigation target.

  Returns:

  navigation target

• rerouteToError

  public void rerouteToError(Class<? extends Exception> exception)

  Reroute to error target for given exception without custom message.

  Exception class needs to have default no-arg constructor.

  Parameters:

  exception - exception to get error target for

  See Also:

  rerouteToError(Exception, String)

• rerouteToError

  public void rerouteToError(Class<? extends Exception> exception,
                             String customMessage)

  Reroute to error target for given exception with given custom message.

  Exception class needs to have default no-arg constructor.

  Parameters:

  exception - exception to get error target for

  customMessage - custom message to send to error target

  See Also:

  rerouteToError(Exception, String)

• rerouteToError

  public void rerouteToError(Exception exception,
                             String customMessage)

  Reroute to error target for given exception with given custom message.

  Parameters:

  exception - exception to get error target for

  customMessage - custom message to send to error target

• hasErrorParameter

  public boolean hasErrorParameter()

  Check if we have an error parameter set for this navigation event.

  Returns:

  true if error parameter is set

• getErrorParameter

  public ErrorParameter<?> getErrorParameter()

  Get the set error parameter.

  Returns:

  error parameter

• getUI

  public UI getUI()

  Gets the UI this navigation takes place inside.

  Returns:

  the related UI instance