com.vaadin.flow.component.

java.lang.Object
- java.util.EventObject
- - com.vaadin.flow.component.ComponentEvent<C>
  - - com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<C,V>

Type Parameters:

C - the source component type

V - the value type

All Implemented Interfaces:

HasValue.ValueChangeEvent<V>, Serializable

Direct Known Subclasses:

MultiSelectionEvent, SingleSelectionEvent

Enclosing class:

AbstractField<C extends AbstractField<C,T>,T>
```
public static class AbstractField.ComponentValueChangeEvent<C extends Component,V>
extends ComponentEvent<C>
implements HasValue.ValueChangeEvent<V>
```
Value change event fired by components.

Since:

1.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Field Summary
- Fields inherited from class java.util.EventObject
  source

Constructor Summary

Constructors
Constructor	Description
`ComponentValueChangeEvent(C source, HasValue<?,V> hasValue, V oldValue, boolean fromClient)`	Creates a new component value change event.

Method Summary

All Methods
Modifier and Type	Method	Description
`HasValue<?,V>`	`getHasValue()`
`V`	`getOldValue()`	Returns the value of the source before this value change event occurred.
`V`	`getValue()`	Returns the new value that triggered this value change event.
`String`	`toString()`

Methods inherited from class com.vaadin.flow.component.ComponentEvent
getSource, isFromClient, unregisterListener

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.vaadin.flow.component.HasValue.ValueChangeEvent
isFromClient

- Constructor Detail
  - ComponentValueChangeEvent
```
public ComponentValueChangeEvent(C source,
                                 HasValue<?,V> hasValue,
                                 V oldValue,
                                 boolean fromClient)
```
    Creates a new component value change event.
    
    Parameters:
    
    source - the source component
    
    hasValue - the HasValue from which the value originates
    
    oldValue - the old value
    
    fromClient - whether the value change originated from the client
- Method Detail
  - getOldValue
```
public V getOldValue()
```
    Description copied from interface: HasValue.ValueChangeEvent
    
    Returns the value of the source before this value change event occurred.
    
    Specified by:
    
    getOldValue in interface HasValue.ValueChangeEvent<C extends Component>
    
    Returns:
    
    the value previously held by the source of this event
  - getValue
```
public V getValue()
```
    Description copied from interface: HasValue.ValueChangeEvent
    
    Returns the new value that triggered this value change event.
    
    Specified by:
    
    getValue in interface HasValue.ValueChangeEvent<C extends Component>
    
    Returns:
    
    the new value
  - getHasValue
```
public HasValue<?,V> getHasValue()
```
    This is typically the same instance as ComponentEvent.getSource(), but in some cases the HasValue implementation is separated from the component implementation.
    
    Specified by:
    
    getHasValue in interface HasValue.ValueChangeEvent<C extends Component>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class EventObject

com.vaadin.flow.component.

Class AbstractField.ComponentValueChangeEvent<C extends Component,​V>

Field Summary

Fields inherited from class java.util.EventObject

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.flow.component.HasValue.ValueChangeEvent

Constructor Detail

ComponentValueChangeEvent

Method Detail

getOldValue

getValue

getHasValue

toString

Class AbstractField.ComponentValueChangeEvent<C extends Component,V>