Interface Property.ValueChangeNotifier

All Superinterfaces:

Serializable

All Known Subinterfaces:

Field

All Known Implementing Classes:

AbstractField, AbstractProperty, AbstractSelect, AbstractTextField, Button, CheckBox, ComboBox, DateField, Form, HierarchicalContainer, IndexedContainer, InlineDateField, Label, ListSelect, MethodProperty, NativeButton, NativeSelect, NestedMethodProperty, ObjectProperty, OptionGroup, PasswordField, PopupDateField, ProgressIndicator, PropertyFormatter, RichTextArea, Select, Slider, Table, TextArea, TextField, TextFileProperty, Tree, TreeTable, TwinColSelect

Enclosing interface:

Property

public static interface Property.ValueChangeNotifier
extends Serializable

The interface for adding and removing ValueChangeEvent listeners. If a Property wishes to allow other objects to receive ValueChangeEvent generated by it, it must implement this interface.

Note : The general Java convention is not to explicitly declare that a class generates events, but to directly define the addListener and removeListener methods. That way the caller of these methods has no real way of finding out if the class really will send the events, or if it just defines the methods to be able to implement an interface.

Since:

3.0

Version:

6.8.18

Author:

Vaadin Ltd.

addListener

void addListener(Property.ValueChangeListener listener)

Registers a new value change listener for this Property.

Parameters:

listener - the new Listener to be registered

removeListener

void removeListener(Property.ValueChangeListener listener)

Removes a previously registered value change listener.

Parameters:

listener - listener to be removed