com.vaadin.event.dd.acceptcriteria

Class ContainsDataFlavor

java.lang.Object

com.vaadin.event.dd.acceptcriteria.ClientSideCriterion

com.vaadin.event.dd.acceptcriteria.ContainsDataFlavor

All Implemented Interfaces:

AcceptCriterion, Serializable

public class ContainsDataFlavor
extends ClientSideCriterion

A Criterion that checks whether Transferable contains given data flavor. The developer might for example accept the incoming data only if it contains "Url" or "Text".

Since:

6.3

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ContainsDataFlavor(String dataFlawor) Constructs a new instance of ContainsDataFlavor.

Method Summary

Modifier and Type	Method and Description
boolean	accept(DragAndDropEvent dragEvent) Validates the data in event to be appropriate for the DropHandler.drop(DragAndDropEvent) method.
protected String	getIdentifier()
void	paintContent(PaintTarget target)

Methods inherited from class com.vaadin.event.dd.acceptcriteria.ClientSideCriterion

isClientSideVerifiable, paint, paintResponse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ContainsDataFlavor

public ContainsDataFlavor(String dataFlawor)

Constructs a new instance of ContainsDataFlavor.

Parameters:

dataFlawor - the type of data that will be checked from Transferable

Method Detail

paintContent

public void paintContent(PaintTarget target)
                  throws PaintException

Overrides:

paintContent in class ClientSideCriterion

Throws:

PaintException

accept

public boolean accept(DragAndDropEvent dragEvent)

Description copied from interface: AcceptCriterion

Validates the data in event to be appropriate for the DropHandler.drop(DragAndDropEvent) method.

Note that even if your criterion is validated on client side, you should always validate the data on server side too.

Returns:

getIdentifier

protected String getIdentifier()

Overrides:

getIdentifier in class ClientSideCriterion