| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ModificationHandler |
|
| 0.0;0 |
| 1 | /* | |
| 2 | * Entagged Audio Tag library | |
| 3 | * Copyright (c) 2003-2005 Christian Laireiter <liree@web.de> | |
| 4 | * | |
| 5 | * This library is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU Lesser General Public | |
| 7 | * License as published by the Free Software Foundation; either | |
| 8 | * version 2.1 of the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This library is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this library; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 18 | */ | |
| 19 | package org.jaudiotagger.audio.generic; | |
| 20 | ||
| 21 | import org.jaudiotagger.audio.AudioFile; | |
| 22 | import org.jaudiotagger.audio.exceptions.ModifyVetoException; | |
| 23 | ||
| 24 | import java.io.File; | |
| 25 | import java.util.Enumeration; | |
| 26 | import java.util.Vector; | |
| 27 | ||
| 28 | /** | |
| 29 | * This class multicasts the events to multiple listener instances.<br> | |
| 30 | * Additionally the Vetos are handled. (other listeners are notified). | |
| 31 | * | |
| 32 | * @author Christian Laireiter | |
| 33 | */ | |
| 34 | 42 | public class ModificationHandler implements AudioFileModificationListener |
| 35 | { | |
| 36 | ||
| 37 | /** | |
| 38 | * The listeners to wich events are broadcasted are stored here. | |
| 39 | */ | |
| 40 | 42 | private Vector<AudioFileModificationListener> listeners = new Vector<AudioFileModificationListener>(); |
| 41 | ||
| 42 | /** | |
| 43 | * This method adds an {@link AudioFileModificationListener} | |
| 44 | * | |
| 45 | * @param l Listener to add. | |
| 46 | */ | |
| 47 | public void addAudioFileModificationListener(AudioFileModificationListener l) | |
| 48 | { | |
| 49 | 0 | if (!this.listeners.contains(l)) |
| 50 | { | |
| 51 | 0 | this.listeners.add(l); |
| 52 | } | |
| 53 | 0 | } |
| 54 | ||
| 55 | /** | |
| 56 | * (overridden) | |
| 57 | * | |
| 58 | * @see org.jaudiotagger.audio.generic.AudioFileModificationListener#fileModified(org.jaudiotagger.audio.AudioFile, | |
| 59 | *File) | |
| 60 | */ | |
| 61 | public void fileModified(AudioFile original, File temporary) throws ModifyVetoException | |
| 62 | { | |
| 63 | 109 | Enumeration<AudioFileModificationListener> enumer = this.listeners.elements(); |
| 64 | 109 | while (enumer.hasMoreElements()) |
| 65 | { | |
| 66 | 0 | AudioFileModificationListener current = enumer.nextElement(); |
| 67 | try | |
| 68 | { | |
| 69 | 0 | current.fileModified(original, temporary); |
| 70 | } | |
| 71 | 0 | catch (ModifyVetoException e) |
| 72 | { | |
| 73 | 0 | vetoThrown(current, original, e); |
| 74 | 0 | throw e; |
| 75 | 0 | } |
| 76 | 0 | } |
| 77 | 109 | } |
| 78 | ||
| 79 | /** | |
| 80 | * (overridden) | |
| 81 | * | |
| 82 | * @see org.jaudiotagger.audio.generic.AudioFileModificationListener#fileOperationFinished(File) | |
| 83 | */ | |
| 84 | public void fileOperationFinished(File result) | |
| 85 | { | |
| 86 | 109 | Enumeration<AudioFileModificationListener> enumer = this.listeners.elements(); |
| 87 | 109 | while (enumer.hasMoreElements()) |
| 88 | { | |
| 89 | 0 | AudioFileModificationListener current = enumer.nextElement(); |
| 90 | 0 | current.fileOperationFinished(result); |
| 91 | 0 | } |
| 92 | 109 | } |
| 93 | ||
| 94 | /** | |
| 95 | * (overridden) | |
| 96 | * | |
| 97 | * @see org.jaudiotagger.audio.generic.AudioFileModificationListener#fileWillBeModified(org.jaudiotagger.audio.AudioFile, | |
| 98 | *boolean) | |
| 99 | */ | |
| 100 | public void fileWillBeModified(AudioFile file, boolean delete) throws ModifyVetoException | |
| 101 | { | |
| 102 | 109 | Enumeration<AudioFileModificationListener> enumer = this.listeners.elements(); |
| 103 | 109 | while (enumer.hasMoreElements()) |
| 104 | { | |
| 105 | 0 | AudioFileModificationListener current = enumer.nextElement(); |
| 106 | try | |
| 107 | { | |
| 108 | 0 | current.fileWillBeModified(file, delete); |
| 109 | } | |
| 110 | 0 | catch (ModifyVetoException e) |
| 111 | { | |
| 112 | 0 | vetoThrown(current, file, e); |
| 113 | 0 | throw e; |
| 114 | 0 | } |
| 115 | 0 | } |
| 116 | 109 | } |
| 117 | ||
| 118 | /** | |
| 119 | * This method removes an {@link AudioFileModificationListener} | |
| 120 | * | |
| 121 | * @param l Listener to remove. | |
| 122 | */ | |
| 123 | public void removeAudioFileModificationListener(AudioFileModificationListener l) | |
| 124 | { | |
| 125 | 0 | if (this.listeners.contains(l)) |
| 126 | { | |
| 127 | 0 | this.listeners.remove(l); |
| 128 | } | |
| 129 | 0 | } |
| 130 | ||
| 131 | /** | |
| 132 | * (overridden) | |
| 133 | * | |
| 134 | * @see org.jaudiotagger.audio.generic.AudioFileModificationListener#vetoThrown(org.jaudiotagger.audio.generic.AudioFileModificationListener, | |
| 135 | *org.jaudiotagger.audio.AudioFile, | |
| 136 | *org.jaudiotagger.audio.exceptions.ModifyVetoException) | |
| 137 | */ | |
| 138 | public void vetoThrown(AudioFileModificationListener cause, AudioFile original, ModifyVetoException veto) | |
| 139 | { | |
| 140 | 0 | Enumeration<AudioFileModificationListener> enumer = this.listeners.elements(); |
| 141 | 0 | while (enumer.hasMoreElements()) |
| 142 | { | |
| 143 | 0 | AudioFileModificationListener current = enumer.nextElement(); |
| 144 | 0 | current.vetoThrown(cause, original, veto); |
| 145 | 0 | } |
| 146 | 0 | } |
| 147 | } |