com.vaadin.data

Class HasValue.ValueChangeEvent<V>

java.lang.Object

java.util.EventObject

com.vaadin.data.HasValue.ValueChangeEvent<V>

Type Parameters:

V - the value type

All Implemented Interfaces:

HasUserOriginated, Serializable

Direct Known Subclasses:

MultiSelectionEvent, SingleSelectionEvent

Enclosing interface:

HasValue<V>

public static class HasValue.ValueChangeEvent<V>
extends EventObject
implements HasUserOriginated

An event fired when the value of a HasValue changes.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
ValueChangeEvent(Component component, HasValue<V> hasValue, V oldValue, boolean userOriginated) Creates a new ValueChange event containing the given value, originating from the given source component.
ValueChangeEvent(COMPONENT component, V oldValue, boolean userOriginated) Creates a new ValueChange event containing the current value of the given value-bearing source component.

Method Summary

Modifier and Type	Method and Description
Component	getComponent() Returns the component.
V	getOldValue() Returns the value of the source before this value change event occurred.
HasValue<V>	getSource()
V	getValue() Returns the new value that triggered this value change event.
boolean	isUserOriginated() Returns whether this event was triggered by user interaction, on the client side, or programmatically, on the server side.

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

ValueChangeEvent

public ValueChangeEvent(COMPONENT component,
                        V oldValue,
                        boolean userOriginated)

Creates a new ValueChange event containing the current value of the given value-bearing source component.

Type Parameters:

COMPONENT - the type of the source component

Parameters:

component - the source component bearing the value, not null

oldValue - the previous value held by the source of this event

userOriginated - true if this event originates from the client, false otherwise.

ValueChangeEvent

public ValueChangeEvent(Component component,
                        HasValue<V> hasValue,
                        V oldValue,
                        boolean userOriginated)

Creates a new ValueChange event containing the given value, originating from the given source component.

Parameters:

component - the component, not null

hasValue - the HasValue instance bearing the value, not null

oldValue - the previous value held by the source of this event

userOriginated - true if this event originates from the client, false otherwise.

Method Detail

getOldValue

public V getOldValue()

Returns the value of the source before this value change event occurred.

Returns:

the value previously held by the source of this event

getValue

public V getValue()

Returns the new value that triggered this value change event.

Returns:

the new value

isUserOriginated

public boolean isUserOriginated()

Description copied from interface: HasUserOriginated

Returns whether this event was triggered by user interaction, on the client side, or programmatically, on the server side.

Specified by:

isUserOriginated in interface HasUserOriginated

Returns:

true if this event originates from the client, false otherwise.

getComponent

public Component getComponent()

Returns the component.

Returns:

the component, not null

getSource

public HasValue<V> getSource()

Overrides:

getSource in class EventObject