File Browser Demo
/******************************************************************************
* All Right Reserved.
* Copyright (c) 1998, 2004 Jackwind Li Guojie
*
* Created on Mar 3, 2004 2:09:15 PM by JACK
* $Id$
*
*****************************************************************************/
import java.io.File;
import java.util.Date;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
public class FileBrowserDemo {
Display display = new Display();
Shell shell = new Shell(display);
Table table;
File rootDir;
Image iconFolder = new Image(shell.getDisplay(), "java2s.gif");
Image iconFile = new Image(shell.getDisplay(), "java2s.gif");
public FileBrowserDemo() {
GridLayout gridLayout = new GridLayout();
shell.setLayout(gridLayout);
// Tool bar.
// Table.
table = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
//table.setLinesVisible(true);
table.setHeaderVisible(true);
TableColumn tcFileName = new TableColumn(table, SWT.LEFT);
tcFileName.setText("File name");
//tcFileName.setImage(new Image(shell.getDisplay(), "java2s.gif"));
TableColumn tcFileSize = new TableColumn(table, SWT.RIGHT);
tcFileSize.setText("Size");
TableColumn tcDateModified = new TableColumn(table, SWT.RIGHT);
tcDateModified.setText("Date Modified");
tcFileName.setWidth(200);
tcFileSize.setWidth(80);
tcDateModified.setWidth(180);
TableItem item = new TableItem(table, SWT.NULL);
item.setText(new String[]{"Name", "Size"});
table.setLayoutData(new GridData(GridData.FILL_BOTH));
table.pack();
shell.pack();
shell.open();
setRootDirectory(new File("."));
//textUser.forceFocus();
// Set up the event loop.
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
// If no more entries in event queue
display.sleep();
}
}
display.dispose();
}
private void setRootDirectory(File dir) {
this.rootDir = dir;
if(! (dir.exists() && dir.isDirectory()))
throw new IllegalArgumentException("Invalid directory. ");
// Remove all existing items.
table.removeAll();
File[] files = dir.listFiles();
for(int i=0; files != null && i < files.length; i++) {
File file = files[i];
TableItem item = new TableItem(table, SWT.NULL);
item.setBackground(i % 2 == 0 ? shell.getDisplay().getSystemColor(SWT.COLOR_WHITE) :
shell.getDisplay().getSystemColor(SWT.COLOR_GRAY));
item.setText(0, file.getName());
item.setText(2, new Date(file.lastModified()).toString());
if(file.isDirectory()) {
item.setImage(0, iconFolder);
}else{
int lastDot = file.getName().lastIndexOf('.');
if(lastDot >= 0 && lastDot < file.getName().length()) {
item.setImage(0, getIcon(file.getName().substring(lastDot+1)));
}
long kbytes = file.length() / 1024;
if(kbytes == 0)
kbytes = 1;
item.setText(1, kbytes + " KB");
}
}
}
private ImageRegistry imageRegistry;
/**
* Returns the icon for the file type with the specified extension.
* @param extension
* @return
*/
public 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);
if(program != null) {
image = new Image(shell.getDisplay(), program.getImageData());
imageRegistry.put(extension, image);
}else{
image = iconFile;
}
return image;
}
public static void main(String[] args) {
new FileBrowserDemo();
}
}
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