Source Code : Simple File Browser in SWT Table

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Simple File Browser in SWT Table

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 7, 2004 2:38:45 PM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/



import java.io.File;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;

public class SimpleFileBrowser {
  Display display = new Display();
  Shell shell = new Shell(display);

  ImageRegistry imageRegistry;

  Table table;

  public SimpleFileBrowser() {
    init();

    shell.pack();
    shell.open();
    //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 init() {
    shell.setText("File Browser");
    shell.setLayout(new GridLayout(1, true));
    
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Browse ...");
    button.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        DirectoryDialog dialog = new DirectoryDialog(shell, SWT.NULL);
        String path = dialog.open();
        if (path != null) {

          File file = new File(path);
          if (file.isFile())
            displayFiles(new String[] { file.toString()});
          else
            displayFiles(file.list());

        }
      }
    });

    GridData gd = new GridData(GridData.FILL_BOTH);

    table = new Table(shell, SWT.MULTI);
    table.setLayoutData(gd);

    // creates an image registry and adds icons to the image registry.
    imageRegistry = new ImageRegistry();

    ImageDescriptor defaultIcon =
      ImageDescriptor.createFromFile(null, "java2s.gif");
    imageRegistry.put("default", defaultIcon);

    ImageDescriptor jarIcon =
      ImageDescriptor.createFromFile(null, "img/jar.gif");
    imageRegistry.put("jar", jarIcon);
  }

  public void displayFiles(String[] files) {
    // Removes all existing table items.
    table.removeAll();

    for (int i = 0; files != null && i < files.length; i++) {
      TableItem item = new TableItem(table, SWT.NULL);
      Image image = null;

      if (files[i].endsWith(".jar")) {
        image = imageRegistry.get("jar");
      } else {
        image = imageRegistry.get("default");
      }

      item.setImage(image);
      item.setText(files[i]);
    }

  }

  public void displayFiles2(String[] files) {

    // Disposes all of the images used by the table items first. 
    TableItem[] items = table.getItems();
    for(int i=0; items != null && i < items.length; i++) {
      if(items[i].getImage() != null)
        items[i].getImage().dispose();
    }
    
    // Removes all existing table items.
    table.removeAll();

    for (int i = 0; files != null && i < files.length; i++) {
      TableItem item = new TableItem(table, SWT.NULL);
      Image image = null;

      if (files[i].endsWith(".jar")) {
        image = new Image(display, "java2s.gif");
      } else {
        image = new Image(display, "img/default.gif");
      }

      item.setImage(image);
      item.setText(files[i]);
    }
  }  
  
  public static void main(String[] args) {
    new SimpleFileBrowser();
  }
}



           
       

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