com.vaadin.event.dd.acceptcriteria.

java.lang.Object
- com.vaadin.event.dd.acceptcriteria.ClientSideCriterion

All Implemented Interfaces:

AcceptCriterion, Serializable

Direct Known Subclasses:

AcceptAll, And, ContainsDataFlavor, Not, Or, SourceIs, SourceIsTarget, TargetDetailIs
```
public abstract class ClientSideCriterion
extends Object
implements AcceptCriterion
```
Parent class for criteria that can be completely validated on client side. All classes that provide criteria that can be completely validated on client side should extend this class. It is recommended that subclasses of ClientSideCriterion re-validate the condition on the server side in AcceptCriterion.accept(com.vaadin.event.dd.DragAndDropEvent) after the client side validation has accepted a transfer.

Since:

6.3

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ClientSideCriterion()

Method Summary

All Methods
Modifier and Type	Method	Description
`protected String`	`getIdentifier()`
`boolean`	`isClientSideVerifiable()`	Returns whether the criteria can be checked on the client or whether a server request is needed to check the criteria.
`void`	`paint(PaintTarget target)`
`protected void`	`paintContent(PaintTarget target)`
`void`	`paintResponse(PaintTarget target)`	This needs to be implemented if and only if a criterion does some lazy server side initialization.

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

Methods inherited from interface com.vaadin.event.dd.acceptcriteria.AcceptCriterion
accept

- Constructor Detail
  - ClientSideCriterion
```
public ClientSideCriterion()
```
- Method Detail
  - isClientSideVerifiable
```
public final boolean isClientSideVerifiable()
```
    Description copied from interface: AcceptCriterion
    
    Returns whether the criteria can be checked on the client or whether a server request is needed to check the criteria. This requirement may depend on the state of the criterion (e.g. logical operations between criteria), so this cannot be based on a marker interface.
    
    Specified by:
    
    isClientSideVerifiable in interface AcceptCriterion
  - paint
```
public void paint(PaintTarget target)
           throws PaintException
```
    Specified by:
    
    paint in interface AcceptCriterion
    
    Throws:
    
    PaintException
  - paintContent
```
protected void paintContent(PaintTarget target)
                     throws PaintException
```
    Throws:
    
    PaintException
  - getIdentifier
```
protected String getIdentifier()
```
  - paintResponse
```
public final void paintResponse(PaintTarget target)
                         throws PaintException
```
    Description copied from interface: AcceptCriterion
    
    This needs to be implemented if and only if a criterion does some lazy server side initialization. The UIDL painted in this method will be passed to client side drop handler implementation. Implementation can assume that AcceptCriterion.accept(DragAndDropEvent) is called before this method.
    
    Specified by:
    
    paintResponse in interface AcceptCriterion
    
    Throws:
    
    PaintException

com.vaadin.event.dd.acceptcriteria.

Class ClientSideCriterion

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.event.dd.acceptcriteria.AcceptCriterion

Constructor Detail

ClientSideCriterion

Method Detail

isClientSideVerifiable

paint

paintContent

getIdentifier

paintResponse