1 /* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.javafx.event; 27 28 import javafx.event.Event; 29 import javafx.event.EventDispatchChain; 30 31 import org.junit.Assert; 32 33 public final class EventChangingDispatcher extends LabeledEventDispatcher { 34 private final Operation capturingPhaseOperation; 35 private final Operation bubblingPhaseOperation; 36 37 public EventChangingDispatcher(final Operation capturingPhaseOperation, 38 final Operation bubblingPhaseOperation) { 39 this(null, capturingPhaseOperation, bubblingPhaseOperation); 40 } 41 42 public EventChangingDispatcher(final String label, 43 final Operation capturingPhaseOperation, 44 final Operation bubblingPhaseOperation) { 45 super(label); 46 this.capturingPhaseOperation = capturingPhaseOperation; 47 this.bubblingPhaseOperation = bubblingPhaseOperation; 48 } 49 50 @Override 51 public Event dispatchEvent(final Event event, 52 final EventDispatchChain tail) { 53 Assert.assertTrue(event instanceof ValueEvent); 54 ValueEvent valueEvent = (ValueEvent) event; 55 56 if (capturingPhaseOperation != null) { 57 valueEvent.setValue(capturingPhaseOperation.applyTo( 58 valueEvent.getValue())); 59 } 60 valueEvent = (ValueEvent) tail.dispatchEvent(valueEvent); 61 if (bubblingPhaseOperation != null) { 62 valueEvent.setValue(bubblingPhaseOperation.applyTo( 63 valueEvent.getValue())); 64 } 65 66 return valueEvent; 67 } 68 }