com.vaadin.event.selection.SelectionEvent API 8.27.7 | Vaadin

com.vaadin.event.selection.

Type Parameters:

T - the data type of the selection model

All Superinterfaces:

HasUserOriginated, Serializable

All Known Implementing Classes:

MultiSelectionEvent, SingleSelectionEvent
```
public interface SelectionEvent<T>
extends HasUserOriginated
```
A selection event that unifies the way to access to selection event for multi selection and single selection components (in case when only one selected item is required).

Since:

8.0

Author:

Vaadin Ltd

- Method Summary
  
  All Methods
  Modifier and Type Method Description
  
  Set<T> getAllSelectedItems()
  Gets all the currently selected items.
  
  Optional<T> getFirstSelectedItem()
  Get first selected data item.
  - Methods inherited from interface com.vaadin.event.HasUserOriginated
    isUserOriginated

- Method Detail
  - getFirstSelectedItem
```
Optional<T> getFirstSelectedItem()
```
    Get first selected data item.
    This is the same as SingleSelectionEvent.getSelectedItem() in case of single selection and the first selected item from MultiSelectionEvent.getNewSelection() in case of multi selection.
    
    Returns:
    
    the first selected item.
  - getAllSelectedItems
```
Set<T> getAllSelectedItems()
```
    Gets all the currently selected items.
    This method applies more to multiselection - for single select it returns either an empty set or a set containing the only selected item.
    
    Returns:
    
    return all the selected items, if any, never null