com.vaadin.flow.component.internal

Class KeyboardEvent

java.lang.Object

java.util.EventObject

com.vaadin.flow.component.ComponentEvent<Component>

com.vaadin.flow.component.internal.KeyboardEvent

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

KeyDownEvent, KeyPressEvent, KeyUpEvent

public abstract class KeyboardEvent
extends ComponentEvent<Component>

Abstract class for keyboard events.

Since:

1.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
KeyboardEvent(Component source, boolean fromClient, String key, String code, int location, boolean ctrlKey, boolean shiftKey, boolean altKey, boolean metaKey, boolean repeat, boolean composing) Creates a new keyboard event.
KeyboardEvent(Component source, String key) Creates a new server-side keyboard event with no additional information.
KeyboardEvent(Component source, String key, String code) Creates a new server-side keyboard event with no additional information.

Method Summary

Modifier and Type	Method and Description
Optional<Key>	getCode() Gets the code of the event.
Key	getKey() Gets the key of the event.
KeyLocation	getLocation() Gets the KeyLocation of the event.
Set<KeyModifier>	getModifiers() Gets the set of KeyModifier of the event.
boolean	isComposing() Checks whether the key event occurred as part of a composition session.
boolean	isRepeat() Checks whether the key has been pressed in a sustained manner.

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

getSource, isFromClient, unregisterListener

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 Detail

KeyboardEvent

public KeyboardEvent(Component source,
                     boolean fromClient,
                     String key,
                     String code,
                     int location,
                     boolean ctrlKey,
                     boolean shiftKey,
                     boolean altKey,
                     boolean metaKey,
                     boolean repeat,
                     boolean composing)

Creates a new keyboard event.

Parameters:

source - the component that fired the event

fromClient - true if the event was originally fired on the client, false if the event originates from server-side logic

key - the string value representing the key

code - the string value representing the code (nullable)

location - the integer value representing the location of the key

ctrlKey - true if the control key was down when the event was fired, false otherwise

shiftKey - true if the shift key was down when the event was fired, false otherwise

altKey - true if the alt key was down when the event was fired, false otherwise

metaKey - true if the meta key was down when the event was fired, false otherwise

repeat - true if the key has been pressed in a sustained manner

composing - true if the key event occurred as part of a composition session

KeyboardEvent

public KeyboardEvent(Component source,
                     String key)

Creates a new server-side keyboard event with no additional information.

Parameters:

source - the component that fired the event

key - the key for this event

KeyboardEvent

public KeyboardEvent(Component source,
                     String key,
                     String code)

Creates a new server-side keyboard event with no additional information.

Parameters:

source - the component that fired the event

key - the key for this event

code - the code for this event

Method Detail

getKey

public Key getKey()

Gets the key of the event.

Returns:

the Key of the event

getCode

public Optional<Key> getCode()

Gets the code of the event. If the event did not contain a valid code, an empty Optional will be given.

Returns:

the optional code of the event as a Key

getLocation

public KeyLocation getLocation()

Gets the KeyLocation of the event.

Returns:

the KeyLocation of the event

isRepeat

public boolean isRepeat()

Checks whether the key has been pressed in a sustained manner.

Returns:

true if the key has been pressed in a sustained manner

isComposing

public boolean isComposing()

Checks whether the key event occurred as part of a composition session.

Returns:

true if the key event occurred as part of a composition session

getModifiers

public Set<KeyModifier> getModifiers()

Gets the set of KeyModifier of the event.

Returns:

the set of KeyModifier