File Icon Util
/******************************************************************************
* All Right Reserved.
* Copyright (c) 1998, 2004 Jackwind Li Guojie
*
* Created on 2004-7-14 7:50:09 by JACK
* $Id$
*
*****************************************************************************/
import java.io.File;
import org.apache.commons.net.ftp.FTPFile;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Display;
/**
* File icon provider. A display object must be created before
* you can access this method.
*/
public class FileIconUtil {
static ImageRegistry imageRegistry;
static Image iconFolder;
static Image iconFile;
static {
iconFolder = new Image(Display.getCurrent(), "java2s.gif");
iconFile = new Image(Display.getCurrent(), "java2s.gif");
}
/**
* Returns an icon representing the specified file.
*
* @param file
* @return
*/
public static Image getIcon(File file) {
if (file.isDirectory())
return iconFolder;
int lastDotPos = file.getName().indexOf('.');
if (lastDotPos == -1)
return iconFile;
Image image = getIcon(file.getName().substring(lastDotPos + 1));
return image == null ? iconFile : image;
}
/**
* Returns an icon representing the specified file.
*
* @param file
* @return
*/
public static Image getIcon(FTPFile file) {
if (file.isDirectory())
return iconFolder;
int lastDotPos = file.getName().indexOf('.');
if (lastDotPos == -1)
return iconFile;
Image image = getIcon(file.getName().substring(lastDotPos + 1));
return image == null ? iconFile : image;
}
/**
* Returns the icon for the file type with the specified extension.
*
* @param extension
* @return
*/
private static Image getIcon(String extension) {
if (imageRegistry == null)
imageRegistry = new ImageRegistry();
Image image = imageRegistry.get(extension);
if (image != null)
return image;
Program program = Program.findProgram(extension);
ImageData imageData = (program == null ? null : program.getImageData());
if (imageData != null) {
image = new Image(Display.getCurrent(), imageData);
imageRegistry.put(extension, image);
} else {
image = iconFile;
}
return image;
}
}
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