Java tutorial
/* * Copyright 2000-2018 Vaadin Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.vaadin.event.dd.acceptcriteria; import com.vaadin.event.dd.DragAndDropEvent; import com.vaadin.server.PaintException; import com.vaadin.server.PaintTarget; /** * A compound criterion that accepts the drag if all of its criteria accepts the * drag. * * @see Or * * @since 6.3 * */ public class And extends ClientSideCriterion { private static final long serialVersionUID = -5242574480825471748L; protected ClientSideCriterion[] criteria; /** * * @param criteria * criteria of which the And criterion will be composed */ public And(ClientSideCriterion... criteria) { this.criteria = criteria; } @Override public void paintContent(PaintTarget target) throws PaintException { super.paintContent(target); for (ClientSideCriterion crit : criteria) { crit.paint(target); } } @Override public boolean accept(DragAndDropEvent dragEvent) { for (ClientSideCriterion crit : criteria) { if (!crit.accept(dragEvent)) { return false; } } return true; } }