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Moved file type image utils functions
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8957 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Roy Wetherall
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/*
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* Copyright (C) 2005-2007 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.repo.web.scripts;
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import java.util.HashMap;
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import java.util.Map;
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import javax.faces.context.FacesContext;
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import javax.servlet.ServletContext;
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import org.alfresco.service.cmr.repository.FileTypeImageSize;
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/**
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* Contains utility methods
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*
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* @author Roy Wetherall
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*/
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public class FileTypeImageUtils
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{
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private static final String IMAGE_PREFIX16 = "/images/filetypes/";
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private static final String IMAGE_PREFIX32 = "/images/filetypes32/";
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private static final String IMAGE_PREFIX64 = "/images/filetypes64/";
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private static final String IMAGE_POSTFIX_GIF = ".gif";
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private static final String IMAGE_POSTFIX_PNG = ".png";
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private static final String DEFAULT_FILE_IMAGE16 = IMAGE_PREFIX16 + "_default" + IMAGE_POSTFIX_GIF;
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private static final String DEFAULT_FILE_IMAGE32 = IMAGE_PREFIX32 + "_default" + IMAGE_POSTFIX_GIF;
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private static final String DEFAULT_FILE_IMAGE64 = IMAGE_PREFIX64 + "_default" + IMAGE_POSTFIX_PNG;
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private static final Map<String, String> s_fileExtensionMap = new HashMap<String, String>(89, 1.0f);
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/**
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* Return the image path to the filetype icon for the specified file name string
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*
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* @param name File name to build filetype icon path for
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* @param small True for the small 16x16 icon or false for the large 32x32
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*
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* @return the image path for the specified node type or the default icon if not found
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*/
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public static String getFileTypeImage(String name, boolean small)
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{
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return getFileTypeImage(FacesContext.getCurrentInstance(), null, name,
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(small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
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}
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/**
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* Return the image path to the filetype icon for the specified file name string
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*
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* @param fc FacesContext
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* @param name File name to build filetype icon path for
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* @param small True for the small 16x16 icon or false for the large 32x32
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*
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* @return the image path for the specified node type or the default icon if not found
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*/
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public static String getFileTypeImage(FacesContext fc, String name, boolean small)
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{
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return getFileTypeImage(fc, null, name, (small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
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}
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/**
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* Return the image path to the filetype icon for the specified file name string
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*
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* @param fc FacesContext
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* @param name File name to build filetype icon path for
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* @param size Size of the icon to return
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*
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* @return the image path for the specified node type or the default icon if not found
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*/
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public static String getFileTypeImage(FacesContext fc, String name, FileTypeImageSize size)
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{
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return getFileTypeImage(fc, null, name, size);
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}
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/**
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* Return the image path to the filetype icon for the specified file name string
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*
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* @param sc ServletContext
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* @param name File name to build filetype icon path for
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* @param small True for the small 16x16 icon or false for the large 32x32
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*
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* @return the image path for the specified node type or the default icon if not found
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*/
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public static String getFileTypeImage(ServletContext sc, String name, boolean small)
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{
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return getFileTypeImage(null, sc, name, (small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
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}
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/**
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* Return the image path to the filetype icon for the specified file name string
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*
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* @param sc ServletContext
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* @param name File name to build filetype icon path for
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* @param size Size of the icon to return
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*
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* @return the image path for the specified node type or the default icon if not found
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*/
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public static String getFileTypeImage(ServletContext sc, String name, FileTypeImageSize size)
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{
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return getFileTypeImage(null, sc, name, size);
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}
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private static String getFileTypeImage(FacesContext fc, ServletContext sc, String name, FileTypeImageSize size)
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{
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String image = null;
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String defaultImage = null;
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switch (size)
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{
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case Small:
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defaultImage = DEFAULT_FILE_IMAGE16; break;
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case Medium:
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defaultImage = DEFAULT_FILE_IMAGE32; break;
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case Large:
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defaultImage = DEFAULT_FILE_IMAGE64; break;
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}
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int extIndex = name.lastIndexOf('.');
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if (extIndex != -1 && name.length() > extIndex + 1)
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{
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String ext = name.substring(extIndex + 1).toLowerCase();
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String key = ext + ' ' + size.toString();
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// found file extension for appropriate size image
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synchronized (s_fileExtensionMap)
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{
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image = s_fileExtensionMap.get(key);
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if (image == null)
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{
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// not found create for first time
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if (size != FileTypeImageSize.Large)
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{
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image = (size == FileTypeImageSize.Small ? IMAGE_PREFIX16 : IMAGE_PREFIX32) +
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ext + IMAGE_POSTFIX_GIF;
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}
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else
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{
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image = IMAGE_PREFIX64 + ext + IMAGE_POSTFIX_PNG;
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}
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// does this image exist on the web-server?
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if ((fc != null && fc.getExternalContext().getResourceAsStream(image) != null) ||
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(sc != null && sc.getResourceAsStream(image) != null))
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{
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// found the image for this extension - save it for later
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s_fileExtensionMap.put(key, image);
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}
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else if ((fc == null) && (sc == null))
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{
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// we have neither FacesContext nor ServerContext so return the default image but don't cache it
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image = defaultImage;
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}
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else
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{
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// not found, save the default image for this extension instead
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s_fileExtensionMap.put(key, defaultImage);
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image = defaultImage;
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}
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}
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}
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}
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return (image != null ? image : defaultImage);
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}
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}
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