| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| CollectionSupport |
|
| 0.0;0 |
| 1 | /* | |
| 2 | * Copyright (c) 2000 | |
| 3 | * Jon Schewe. All rights reserved | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * | |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 24 | * SUCH DAMAGE. | |
| 25 | * | |
| 26 | * I'd appreciate comments/suggestions on the code jpschewe@mtu.net | |
| 27 | */ | |
| 28 | package net.mtu.eggplant.util.event; | |
| 29 | ||
| 30 | import java.util.Collection; | |
| 31 | import java.util.function.BiConsumer; | |
| 32 | ||
| 33 | import javax.swing.event.EventListenerList; | |
| 34 | ||
| 35 | /** | |
| 36 | * Adds support for Collection events. | |
| 37 | * | |
| 38 | * @version $Revision$ | |
| 39 | */ | |
| 40 | public class CollectionSupport { | |
| 41 | ||
| 42 | /** | |
| 43 | * @param source the object that is to be the source of the events | |
| 44 | * @pre (source != null) | |
| 45 | **/ | |
| 46 | 0 | public CollectionSupport(final Object source) { |
| 47 | 0 | _source = source; |
| 48 | 0 | _listeners = new EventListenerList(); |
| 49 | 0 | } |
| 50 | ||
| 51 | private Object _source; | |
| 52 | ||
| 53 | /** | |
| 54 | * @param data the objects that were added | |
| 55 | * @pre (data != null) | |
| 56 | **/ | |
| 57 | public void fireObjectsAdded(final Collection<?> data) { | |
| 58 | 0 | fireObjectsEvent(data, (listener, |
| 59 | 0 | event) -> listener.objectsAdded(event)); |
| 60 | ||
| 61 | 0 | } |
| 62 | ||
| 63 | /** | |
| 64 | * @param data the objects that were removed | |
| 65 | * @pre (data != null) | |
| 66 | **/ | |
| 67 | public void fireObjectsRemoved(final Collection<?> data) { | |
| 68 | 0 | fireObjectsEvent(data, (listener, |
| 69 | 0 | event) -> listener.objectsRemoved(event)); |
| 70 | 0 | } |
| 71 | ||
| 72 | private void fireObjectsEvent(final Collection<?> data, | |
| 73 | BiConsumer<CollectionListener, CollectionEvent> eventCallback) { | |
| 74 | 0 | final CollectionEvent ce = new CollectionEvent(_source, data); |
| 75 | 0 | final Object[] listeners = _listeners.getListenerList(); |
| 76 | 0 | for (int i = listeners.length |
| 77 | 0 | - 2; i >= 0; i -= 2) { |
| 78 | 0 | if (listeners[i] == CollectionListener.class) { |
| 79 | 0 | eventCallback.accept(((CollectionListener) listeners[i |
| 80 | + 1]), ce); | |
| 81 | } | |
| 82 | } | |
| 83 | 0 | } |
| 84 | ||
| 85 | private EventListenerList _listeners; | |
| 86 | ||
| 87 | /** | |
| 88 | * @pre (listener != null) | |
| 89 | **/ | |
| 90 | public void addCollectionListener(final CollectionListener listener) { | |
| 91 | 0 | _listeners.add(CollectionListener.class, listener); |
| 92 | 0 | } |
| 93 | ||
| 94 | /** | |
| 95 | * @pre (listener != null) | |
| 96 | **/ | |
| 97 | public void removeCollectionListener(final CollectionListener listener) { | |
| 98 | 0 | _listeners.remove(CollectionListener.class, listener); |
| 99 | 0 | } |
| 100 | ||
| 101 | } |