com.vaadin.flow.router

Class RouterLink

java.lang.Object

com.vaadin.flow.component.Component

com.vaadin.flow.router.RouterLink

All Implemented Interfaces:

AttachNotifier, DetachNotifier, HasComponents, HasElement, HasEnabled, HasStyle, HasText, AfterNavigationObserver, AfterNavigationHandler, Serializable

@Tag(value="a")
public class RouterLink
extends Component
implements HasText, HasComponents, HasStyle, AfterNavigationObserver

A link that handles navigation internally using Router instead of loading a new page in the browser.

The href attribute of Component.getElement() will only be up-to-date when the component is attached to a UI.

Since:

1.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RouterLink() Creates a new empty router link.
RouterLink(Router router, String text, Class<? extends C> navigationTarget, T parameter) Creates a new router link for the given navigation target using the given text and parameter.
RouterLink(Router router, String text, Class<? extends Component> navigationTarget) Creates a new router link for the given navigation target using the given text.
RouterLink(String text, Class<? extends C> navigationTarget, T parameter) Creates a new router link for the given navigation target using the given text and parameter.
RouterLink(String text, Class<? extends Component> navigationTarget) Creates a new router link for the given navigation target using the given text.

Method Summary

Modifier and Type	Method and Description
void	afterNavigation(AfterNavigationEvent event) Method called after navigation has been executed.
HighlightAction<RouterLink>	getHighlightAction() Gets the HighlightAction of this link.
HighlightCondition<RouterLink>	getHighlightCondition() Gets the HighlightCondition of this link.
String	getHref() Gets the href (the URL) of this link.
Optional<QueryParameters>	getQueryParameters() Gets the QueryParameters of this link.
void	setHighlightAction(HighlightAction<RouterLink> highlightAction) Sets the HighlightAction of this link, which will be performed with the evaluation of this link's HighlightCondition.
void	setHighlightCondition(HighlightCondition<RouterLink> highlightCondition) Sets the HighlightCondition of this link, which determines if the link should be highlighted when a AfterNavigationEvent occurs.
void	setQueryParameters(QueryParameters queryParameters) Sets the QueryParameters of this link.
<T,C extends Component & HasUrlParameter<T>> void	setRoute(Router router, Class<? extends C> navigationTarget, T parameter) Set the navigation target for this link.
void	setRoute(Router router, Class<? extends Component> navigationTarget) Set the navigation target for this link.

Methods inherited from class com.vaadin.flow.component.Component

addListener, fireEvent, from, get, getChildren, getElement, getEventBus, getId, getLocale, getParent, getTranslation, getTranslation, getUI, hasListener, isTemplateMapped, isVisible, onAttach, onDetach, onEnabledStateChanged, set, setElement, setId, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.flow.component.HasText

getText, setText

Methods inherited from interface com.vaadin.flow.component.HasComponents

add, add, addComponentAsFirst, addComponentAtIndex, remove, removeAll

Methods inherited from interface com.vaadin.flow.component.HasEnabled

isEnabled, setEnabled

Methods inherited from interface com.vaadin.flow.component.HasElement

getElement

Methods inherited from interface com.vaadin.flow.component.HasStyle

addClassName, addClassNames, getClassName, getClassNames, getStyle, hasClassName, removeClassName, removeClassNames, setClassName, setClassName

Methods inherited from interface com.vaadin.flow.component.AttachNotifier

addAttachListener

Methods inherited from interface com.vaadin.flow.component.DetachNotifier

addDetachListener

Constructor Detail

RouterLink

public RouterLink()

Creates a new empty router link.

RouterLink

public RouterLink(String text,
                  Class<? extends Component> navigationTarget)

Creates a new router link for the given navigation target using the given text.

Parameters:

text - link text

navigationTarget - navigation target

RouterLink

public RouterLink(String text,
                  Class<? extends C> navigationTarget,
                  T parameter)

Creates a new router link for the given navigation target using the given text and parameter.

Type Parameters:

T - url parameter type

C - navigation target type

Parameters:

text - link text

navigationTarget - navigation target

parameter - url parameter for navigation target

RouterLink

public RouterLink(Router router,
                  String text,
                  Class<? extends Component> navigationTarget)

Creates a new router link for the given navigation target using the given text.

Parameters:

router - router used for navigation

text - link text

navigationTarget - navigation target

RouterLink

public RouterLink(Router router,
                  String text,
                  Class<? extends C> navigationTarget,
                  T parameter)

Creates a new router link for the given navigation target using the given text and parameter.

Type Parameters:

T - url parameter type

C - navigation target type

Parameters:

router - router used for navigation

text - link text

navigationTarget - navigation target

parameter - url parameter for navigation target

Method Detail

setRoute

public void setRoute(Router router,
                     Class<? extends Component> navigationTarget)

Set the navigation target for this link.

Parameters:

router - router used for navigation

navigationTarget - navigation target

setRoute

public <T,C extends Component & HasUrlParameter<T>> void setRoute(Router router,
                                                                  Class<? extends C> navigationTarget,
                                                                  T parameter)

Set the navigation target for this link.

Type Parameters:

T - url parameter type

C - navigation target type

Parameters:

router - router used for navigation

navigationTarget - navigation target

parameter - url parameter for navigation target

getHref

public String getHref()

Gets the href (the URL) of this link.

Returns:

the href

getQueryParameters

public Optional<QueryParameters> getQueryParameters()

Gets the QueryParameters of this link.

Returns:

an optional of QueryParameters, or an empty optional if there are no query parameters set

See Also:

setQueryParameters(QueryParameters)

setQueryParameters

public void setQueryParameters(QueryParameters queryParameters)

Sets the QueryParameters of this link.

The query string will be generated from QueryParameters.getQueryString() and will be appended to the href attribute of this link.

Parameters:

queryParameters - the query parameters object, or null to remove existing query parameters

getHighlightCondition

public HighlightCondition<RouterLink> getHighlightCondition()

Gets the HighlightCondition of this link.

The default condition is to checked whether the current location starts with this link's getHref() value, as defined in HighlightConditions.locationPrefix().

Returns:

the highlight condition, never null

See Also:

setHighlightCondition(HighlightCondition)

setHighlightCondition

public void setHighlightCondition(HighlightCondition<RouterLink> highlightCondition)

Sets the HighlightCondition of this link, which determines if the link should be highlighted when a AfterNavigationEvent occurs.

The evaluation of this condition will be processed by this link's HighlightAction.

Parameters:

highlightCondition - the highlight condition, not null

See Also:

setHighlightAction(HighlightAction), HighlightConditions

getHighlightAction

public HighlightAction<RouterLink> getHighlightAction()

Gets the HighlightAction of this link.

The default action is to toggle the highlight attribute of the element, as defined in HighlightActions.toggleAttribute(String).

Returns:

the highlight action, never null

See Also:

setHighlightAction(HighlightAction)

setHighlightAction

public void setHighlightAction(HighlightAction<RouterLink> highlightAction)

Sets the HighlightAction of this link, which will be performed with the evaluation of this link's HighlightCondition.

The old action will be executed passing false to HighlightAction.highlight(Object, boolean) to clear any previous highlight state.

Parameters:

highlightAction - the highlight action, not null

See Also:

setHighlightCondition(HighlightCondition), HighlightActions

afterNavigation

public void afterNavigation(AfterNavigationEvent event)

Description copied from interface: AfterNavigationHandler

Method called after navigation has been executed.

Specified by:

afterNavigation in interface AfterNavigationHandler

Parameters:

event - after navigation event with event details