com.vaadin.event.dd.acceptcriteria.Not Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.event.dd.acceptcriteria;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.server.PaintException;
import com.vaadin.server.PaintTarget;
/**
* Criterion that wraps another criterion and inverts its return value.
*
* @since 6.3
*
*/
public class Not extends ClientSideCriterion {
private static final long serialVersionUID = 1131422338558613244L;
private final AcceptCriterion acceptCriterion;
public Not(ClientSideCriterion acceptCriterion) {
this.acceptCriterion = acceptCriterion;
}
@Override
public void paintContent(PaintTarget target) throws PaintException {
super.paintContent(target);
acceptCriterion.paint(target);
}
@Override
public boolean accept(DragAndDropEvent dragEvent) {
return !acceptCriterion.accept(dragEvent);
}
}