com.vaadin.flow.server.startup

Class RouteRegistry

java.lang.Object

com.vaadin.flow.server.startup.RouteRegistry

All Implemented Interfaces:

Serializable

public class RouteRegistry
extends Object
implements Serializable

Registry for holding navigation target components found on servlet initialization.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RouteRegistry.ErrorTargetEntry A pair of a navigation target for handling exceptions and the exception type handled by the navigation target.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RouteRegistry() Creates a new uninitialized route registry.

Method Summary

Modifier and Type	Method and Description
boolean	errorNavigationTargetsInitialized() Returns whether this registry has been initialized with error navigation targets.
Optional<RouteRegistry.ErrorTargetEntry>	getErrorNavigationTarget(Exception exception) Get a registered navigation target for given exception.
static RouteRegistry	getInstance(ServletContext servletContext) Gets the route registry for the given servlet context.
Optional<Class<? extends Component>>	getNavigationTarget(String pathString) Gets the optional navigation target class for a given Location.
Optional<Class<? extends Component>>	getNavigationTarget(String pathString, List<String> segments) Gets the optional navigation target class for a given Location matching with path segments.
List<RouteData>	getRegisteredRoutes() Get the RouteData for all registered navigation targets.
Optional<String>	getTargetUrl(Class<? extends Component> navigationTarget) Get the url string for given navigation target.
Optional<ThemeDefinition>	getThemeFor(Class<?> navigationTarget, String path) Gets the ThemeDefinition associated with the given navigation target, if any.
boolean	hasNavigationTargets() Checks whether any navigation targets have been registered.
boolean	hasRoutes() Check if there are any registered routes.
boolean	hasRouteTo(String pathString) Checks if the registry contains a route to the given path.
boolean	navigationTargetsInitialized() Returns whether this registry has been initialized with navigation targets.
void	setErrorNavigationTargets(Set<Class<? extends Component>> errorNavigationTargets) Set error handler navigation targets.
void	setNavigationTargets(Set<Class<? extends Component>> navigationTargets) Registers a set of components as navigation targets.

Methods inherited from class java.lang.Object

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

Constructor Detail

RouteRegistry

protected RouteRegistry()

Creates a new uninitialized route registry.

Method Detail

getInstance

public static RouteRegistry getInstance(ServletContext servletContext)

Gets the route registry for the given servlet context. If the servlet context has no route registry, a new instance is created and assigned to the context.

Parameters:

servletContext - the servlet context for which to get a route registry, not null

Returns:

a registry instance for the given servlet context, not null

setNavigationTargets

public void setNavigationTargets(Set<Class<? extends Component>> navigationTargets)
                          throws InvalidRouteConfigurationException

Registers a set of components as navigation targets.

Note: Navigation targets can only be set once, i.e. when navigationTargetsInitialized() is false.

Parameters:

navigationTargets - set of navigation target components

Throws:

InvalidRouteConfigurationException - if routing has been configured incorrectly

setErrorNavigationTargets

public void setErrorNavigationTargets(Set<Class<? extends Component>> errorNavigationTargets)

Set error handler navigation targets.

Parameters:

errorNavigationTargets - error handler navigation targets

getRegisteredRoutes

public List<RouteData> getRegisteredRoutes()

Get the RouteData for all registered navigation targets.

Returns:

list of routes available for this registry

errorNavigationTargetsInitialized

public boolean errorNavigationTargetsInitialized()

Returns whether this registry has been initialized with error navigation targets.

Returns:

whether this registry has been initialized with error navigation targets

getErrorNavigationTarget

public Optional<RouteRegistry.ErrorTargetEntry> getErrorNavigationTarget(Exception exception)

Get a registered navigation target for given exception. First we will search for a matching cause for in the exception chain and if no match found search by extended type.

Parameters:

exception - exception to search error view for

Returns:

optional error target entry corresponding to the given exception

getNavigationTarget

public Optional<Class<? extends Component>> getNavigationTarget(String pathString)

Gets the optional navigation target class for a given Location. Returns an empty optional if no navigation target corresponds to the given Location.

Parameters:

pathString - the path to get the navigation target for, not null

Returns:

optional of the navigation target corresponding to the given location

See Also:

Location

getNavigationTarget

public Optional<Class<? extends Component>> getNavigationTarget(String pathString,
                                                                List<String> segments)

Gets the optional navigation target class for a given Location matching with path segments.

Parameters:

pathString - path to get navigation target for, not null

segments - segments given for path

Returns:

optional navigation target corresponding to the given location with given segments if any applicable targets found.

See Also:

Location

hasRouteTo

public boolean hasRouteTo(String pathString)

Checks if the registry contains a route to the given path.

Parameters:

pathString - path to get navigation target for, not null

Returns:

true if the registry contains a route to the given path, false otherwise.

getTargetUrl

public Optional<String> getTargetUrl(Class<? extends Component> navigationTarget)

Get the url string for given navigation target.

Parameters:

navigationTarget - navigation target to get registered route for, not null

Returns:

optional navigation target url string

navigationTargetsInitialized

public boolean navigationTargetsInitialized()

Returns whether this registry has been initialized with navigation targets.

Returns:

whether this registry has been initialized

hasNavigationTargets

public boolean hasNavigationTargets()

Checks whether any navigation targets have been registered.

Returns:

true if at least one navigation target is registered; otherwise false

hasRoutes

public boolean hasRoutes()

Check if there are any registered routes.

Returns:

true if we have registered routes

getThemeFor

public Optional<ThemeDefinition> getThemeFor(Class<?> navigationTarget,
                                             String path)

Gets the ThemeDefinition associated with the given navigation target, if any. The theme is defined by using the Theme annotation on the navigation target class.

If no Theme and NoTheme annotation are used, by default the com.vaadin.flow.theme.lumo.Lumo class is used (if present on the classpath).

Parameters:

navigationTarget - the navigation target class

path - the resolved route path so we can determine what the rendered target is for

Returns:

the associated ThemeDefinition, or empty if none is defined and the Lumo class is not in the classpath, or if the NoTheme annotation is being used.