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Moved file type image utils functions

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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
2008-04-29 19:43:47 +00:00
parent d12effa6d6
commit 060c5eb8a1
1 changed files with 185 additions and 0 deletions
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source/java/org/alfresco/repo/web/scripts/FileTypeImageUtils.java Normal file
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/*
* Copyright (C) 2005-2007 Alfresco Software Limited.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* As a special exception to the terms and conditions of version 2.0 of
* the GPL, you may redistribute this Program in connection with Free/Libre
* and Open Source Software ("FLOSS") applications as described in Alfresco's
* FLOSS exception. You should have recieved a copy of the text describing
* the FLOSS exception, and it is also available here:
* http://www.alfresco.com/legal/licensing"
*/
package org.alfresco.repo.web.scripts;
import java.util.HashMap;
import java.util.Map;
import javax.faces.context.FacesContext;
import javax.servlet.ServletContext;
import org.alfresco.service.cmr.repository.FileTypeImageSize;
/**
* Contains utility methods
*
* @author Roy Wetherall
*/
public class FileTypeImageUtils
{
private static final String IMAGE_PREFIX16 = "/images/filetypes/";
private static final String IMAGE_PREFIX32 = "/images/filetypes32/";
private static final String IMAGE_PREFIX64 = "/images/filetypes64/";
private static final String IMAGE_POSTFIX_GIF = ".gif";
private static final String IMAGE_POSTFIX_PNG = ".png";
private static final String DEFAULT_FILE_IMAGE16 = IMAGE_PREFIX16 + "_default" + IMAGE_POSTFIX_GIF;
private static final String DEFAULT_FILE_IMAGE32 = IMAGE_PREFIX32 + "_default" + IMAGE_POSTFIX_GIF;
private static final String DEFAULT_FILE_IMAGE64 = IMAGE_PREFIX64 + "_default" + IMAGE_POSTFIX_PNG;
private static final Map<String, String> s_fileExtensionMap = new HashMap<String, String>(89, 1.0f);
/**
* Return the image path to the filetype icon for the specified file name string
*
* @param name File name to build filetype icon path for
* @param small True for the small 16x16 icon or false for the large 32x32
*
* @return the image path for the specified node type or the default icon if not found
*/
public static String getFileTypeImage(String name, boolean small)
{
return getFileTypeImage(FacesContext.getCurrentInstance(), null, name,
(small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
}
/**
* Return the image path to the filetype icon for the specified file name string
*
* @param fc FacesContext
* @param name File name to build filetype icon path for
* @param small True for the small 16x16 icon or false for the large 32x32
*
* @return the image path for the specified node type or the default icon if not found
*/
public static String getFileTypeImage(FacesContext fc, String name, boolean small)
{
return getFileTypeImage(fc, null, name, (small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
}
/**
* Return the image path to the filetype icon for the specified file name string
*
* @param fc FacesContext
* @param name File name to build filetype icon path for
* @param size Size of the icon to return
*
* @return the image path for the specified node type or the default icon if not found
*/
public static String getFileTypeImage(FacesContext fc, String name, FileTypeImageSize size)
{
return getFileTypeImage(fc, null, name, size);
}
/**
* Return the image path to the filetype icon for the specified file name string
*
* @param sc ServletContext
* @param name File name to build filetype icon path for
* @param small True for the small 16x16 icon or false for the large 32x32
*
* @return the image path for the specified node type or the default icon if not found
*/
public static String getFileTypeImage(ServletContext sc, String name, boolean small)
{
return getFileTypeImage(null, sc, name, (small ? FileTypeImageSize.Small : FileTypeImageSize.Medium));
}
/**
* Return the image path to the filetype icon for the specified file name string
*
* @param sc ServletContext
* @param name File name to build filetype icon path for
* @param size Size of the icon to return
*
* @return the image path for the specified node type or the default icon if not found
*/
public static String getFileTypeImage(ServletContext sc, String name, FileTypeImageSize size)
{
return getFileTypeImage(null, sc, name, size);
}
private static String getFileTypeImage(FacesContext fc, ServletContext sc, String name, FileTypeImageSize size)
{
String image = null;
String defaultImage = null;
switch (size)
{
case Small:
defaultImage = DEFAULT_FILE_IMAGE16; break;
case Medium:
defaultImage = DEFAULT_FILE_IMAGE32; break;
case Large:
defaultImage = DEFAULT_FILE_IMAGE64; break;
}
int extIndex = name.lastIndexOf('.');
if (extIndex != -1 && name.length() > extIndex + 1)
{
String ext = name.substring(extIndex + 1).toLowerCase();
String key = ext + ' ' + size.toString();
// found file extension for appropriate size image
synchronized (s_fileExtensionMap)
{
image = s_fileExtensionMap.get(key);
if (image == null)
{
// not found create for first time
if (size != FileTypeImageSize.Large)
{
image = (size == FileTypeImageSize.Small ? IMAGE_PREFIX16 : IMAGE_PREFIX32) +
ext + IMAGE_POSTFIX_GIF;
}
else
{
image = IMAGE_PREFIX64 + ext + IMAGE_POSTFIX_PNG;
}
// does this image exist on the web-server?
if ((fc != null && fc.getExternalContext().getResourceAsStream(image) != null) ||
(sc != null && sc.getResourceAsStream(image) != null))
{
// found the image for this extension - save it for later
s_fileExtensionMap.put(key, image);
}
else if ((fc == null) && (sc == null))
{
// we have neither FacesContext nor ServerContext so return the default image but don't cache it
image = defaultImage;
}
else
{
// not found, save the default image for this extension instead
s_fileExtensionMap.put(key, defaultImage);
image = defaultImage;
}
}
}
}
return (image != null ? image : defaultImage);
}
}