com.vaadin.ui.dnd.event.DragStartEvent API 8.27.7 | Vaadin

com.vaadin.ui.dnd.event.

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

Type Parameters:

T - Type of the component that is dragged.

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

GridDragStartEvent
```
public class DragStartEvent<T extends AbstractComponent>
extends Component.Event
```
HTML5 drag start event.

Since:

8.1

Author:

Vaadin Ltd

See Also:

DragSourceExtension.addDragStartListener(DragStartListener), Serialized Form

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

Constructor Summary

Constructors
Constructor Description

DragStartEvent(T source, EffectAllowed effectAllowed)
Creates a drag start event.

Method Summary

All Methods
Modifier and Type	Method	Description
`T`	`getComponent()`	Returns the drag source component where the dragstart event occurred.
`EffectAllowed`	`getEffectAllowed()`	Returns the `effectAllowed` parameter of this event.

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
  - DragStartEvent
```
public DragStartEvent(T source,
                      EffectAllowed effectAllowed)
```
    Creates a drag start event.
    
    Parameters:
    
    source - Component that is dragged.
    
    effectAllowed - Allowed effects from DataTransfer.effectAllowed object.
- Method Detail
  - getEffectAllowed
```
public EffectAllowed getEffectAllowed()
```
    Returns the effectAllowed parameter of this event.
    
    Returns:
    
    This event's effectAllowed parameter.
  - getComponent
```
public T getComponent()
```
    Returns the drag source component where the dragstart event occurred.
    
    Overrides:
    
    getComponent in class Component.Event
    
    Returns:
    
    Component which is dragged.