Package com.vaadin.flow.component.page

Class History.HistoryStateChangeEvent

java.lang.Object

java.util.EventObject

com.vaadin.flow.component.page.History.HistoryStateChangeEvent

All Implemented Interfaces:

Serializable

Enclosing class:

History

public static class History.HistoryStateChangeEvent
extends EventObject

Event fired when the history state has changed.

This happens when PopStateEvent is fired in the browser, or when routing has been triggered by user clicking a link marked with attribute "router-link".

Note that this event is not fired when only the hash has changed!

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor	Description
HistoryStateChangeEvent(History history, elemental.json.JsonValue state, Location location, NavigationTrigger trigger)	Creates a new event.

Method Summary

Modifier and Type	Method	Description
Location	getLocation()	Gets the location that was opened.
History	getSource()
Optional<elemental.json.JsonValue>	getState()	Gets the history state value as JSON.
NavigationTrigger	getTrigger()	Gets the type of user action that triggered this history change.

Methods inherited from class java.util.EventObject

toString

Methods inherited from class java.lang.Object

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

Constructor Details

HistoryStateChangeEvent

public HistoryStateChangeEvent(History history,
 elemental.json.JsonValue state,
 Location location,
 NavigationTrigger trigger)

Creates a new event.

Parameters:

history - the history instance that fired the event, not null

state - the history state from the browser, null if no state was provided

location - the new browser location, not null

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

Method Details

getSource

public History getSource()

Overrides:

getSource in class EventObject

getLocation

public Location getLocation()

Gets the location that was opened. This is relative to the base url.

Returns:

the location, not null

getState

public Optional<elemental.json.JsonValue> getState()

Gets the history state value as JSON.

Returns:

an optional JSON state value or an empty optional if no state has been provided

getTrigger

public NavigationTrigger getTrigger()

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

Returns:

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