com.vaadin.ui.dnd.event

Interface DragStartListener<T extends AbstractComponent>

Type Parameters:

T - Type of draggable component.

All Superinterfaces:

ConnectorEventListener, EventListener, Serializable, SerializableEventListener

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DragStartListener<T extends AbstractComponent>
extends ConnectorEventListener

Interface to be implemented when creating a dragstart listener on a drag source for HTML5 drag and drop.

Since:

8.1

Author:

Vaadin Ltd

See Also:

DragSourceExtension.addDragStartListener(DragStartListener)

Field Summary

Fields

Modifier and Type	Field and Description
static Method	DRAGSTART_METHOD

Method Summary

Modifier and Type	Method and Description
void	dragStart(DragStartEvent<T> event) Called when dragstart event is fired.

Field Detail

DRAGSTART_METHOD

static final Method DRAGSTART_METHOD

Method Detail

dragStart

void dragStart(DragStartEvent<T> event)

Called when dragstart event is fired.

Parameters:

event - Server side dragstart event.