001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.documentlibrary.util;
016    
017    import com.liferay.portal.kernel.repository.model.FileEntry;
018    import com.liferay.portal.kernel.repository.model.FileVersion;
019    
020    import java.io.File;
021    import java.io.InputStream;
022    
023    /**
024     * @author Alexander Chow
025     */
026    public abstract class DefaultPreviewableProcessor
027            extends DLPreviewableProcessor {
028    
029            public void cleanUp(FileEntry fileEntry) {
030                    deleteFiles(fileEntry, getThumbnailType());
031            }
032    
033            public void cleanUp(FileVersion fileVersion) {
034                    deleteFiles(fileVersion, getThumbnailType());
035            }
036    
037            protected InputStream doGetPreviewAsStream(FileVersion fileVersion)
038                    throws Exception {
039    
040                    return doGetPreviewAsStream(fileVersion, 0);
041            }
042    
043            protected InputStream doGetPreviewAsStream(
044                            FileVersion fileVersion, int index)
045                    throws Exception {
046    
047                    return doGetPreviewAsStream(fileVersion, index, getPreviewType());
048            }
049    
050            protected long doGetPreviewFileSize(FileVersion fileVersion)
051                    throws Exception {
052    
053                    return doGetPreviewFileSize(fileVersion, 0);
054            }
055    
056            protected long doGetPreviewFileSize(FileVersion fileVersion, int index)
057                    throws Exception {
058    
059                    return doGetPreviewFileSize(fileVersion, index, getPreviewType());
060            }
061    
062            protected InputStream doGetThumbnailAsStream(FileVersion fileVersion)
063                    throws Exception {
064    
065                    return doGetThumbnailAsStream(fileVersion, getThumbnailType());
066            }
067    
068            protected long doGetThumbnailFileSize(FileVersion fileVersion)
069                    throws Exception {
070    
071                    return doGetThumbnailFileSize(fileVersion, getThumbnailType());
072            }
073    
074            protected String getPreviewFilePath(FileVersion fileVersion) {
075                    return getPreviewFilePath(fileVersion, 0);
076            }
077    
078            protected String getPreviewFilePath(FileVersion fileVersion, int index) {
079                    return getPreviewFilePath(fileVersion, index, getPreviewType());
080            }
081    
082            protected File getPreviewTempFile(String id) {
083                    return getPreviewTempFile(id, 0);
084            }
085    
086            protected File getPreviewTempFile(String id, int index) {
087                    return getPreviewTempFile(id, index, getPreviewType());
088            }
089    
090            protected int getPreviewTempFileCount(FileVersion fileVersion) {
091                    return getPreviewTempFileCount(fileVersion, getPreviewType());
092            }
093    
094            protected String getPreviewTempFilePath(String id) {
095                    return getPreviewTempFilePath(id, 0);
096            }
097    
098            protected String getPreviewTempFilePath(String id, int index) {
099                    return getPreviewTempFilePath(id, index, getPreviewType());
100            }
101    
102            protected abstract String getPreviewType();
103    
104            protected String getPreviewType(int index) {
105                    String[] previewTypes = getPreviewTypes();
106    
107                    if ((previewTypes != null) && (previewTypes.length > index)) {
108                            return previewTypes[index];
109                    }
110                    else {
111                            return getPreviewType();
112                    }
113            }
114    
115            protected String[] getPreviewTypes() {
116                    return new String[] { getPreviewType() };
117            }
118    
119            protected String getThumbnailFilePath(FileVersion fileVersion) {
120                    return getThumbnailFilePath(fileVersion, getThumbnailType());
121            }
122    
123            protected File getThumbnailTempFile(String id) {
124                    return getThumbnailTempFile(id, getThumbnailType());
125            }
126    
127            protected String getThumbnailTempFilePath(String id) {
128                    return getThumbnailTempFilePath(id, getThumbnailType());
129            }
130    
131            protected String getThumbnailType() {
132                    return null;
133            }
134    
135    }