ExpandEvent (vaadin-all 8.27.7 API)

java.lang.Object
- java.util.EventObject
- - com.vaadin.event.ConnectorEvent
  - - com.vaadin.ui.Component.Event
    - - com.vaadin.event.ExpandEvent<T>

Type Parameters:

T - the expanded item's type

All Implemented Interfaces:

HasUserOriginated, Serializable
```
public class ExpandEvent<T>
extends Component.Event
implements HasUserOriginated
```
An event that is fired when an item is expanded in a listing component that displays hierarchical data.

Since:

8.1

Author:

Vaadin Ltd

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface ExpandEvent.ExpandListener<T>
Item expand event listener.

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

Constructor Summary

Constructors
Constructor Description

ExpandEvent(Component source, T expandedItem, boolean userOriginated)
Construct an expand event.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`T`	`getExpandedItem()`	Get the expanded item that triggered this 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 com.vaadin.ui.Component.Event
getComponent

Methods inherited from class com.vaadin.event.ConnectorEvent
getConnector

Methods inherited from class java.util.EventObject
getSource, toString

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

- Constructor Detail
  - ExpandEvent
```
public ExpandEvent(Component source,
                   T expandedItem,
                   boolean userOriginated)
```
    Construct an expand event.
    
    Parameters:
    
    source - the hierarchical component this event originated from
    
    expandedItem - the item that was expanded
    
    userOriginated - whether the expand was triggered by a user interaction or the server
- Method Detail
  - getExpandedItem
```
public T getExpandedItem()
```
    Get the expanded item that triggered this event.
    
    Returns:
    
    the expanded item
  - 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.