SimpleFileBrowser.java Source code

Introduction

Here is the source code for SimpleFileBrowser.java

Source

/******************************************************************************
 * 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();
    }
}