SampleCombo.java Source code

Introduction

Here is the source code for SampleCombo.java

Source

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Feb 8, 2004 9:25:39 AM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/

import java.util.Arrays;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

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

    public SampleCombo() {
        init();

        shell.setLayout(new GridLayout(2, false));

        (new Label(shell, SWT.NULL)).setText("Select your favorite programming language: ");

        //final CCombo combo = new CCombo(shell, SWT.FLAT);
        final Combo combo = new Combo(shell, SWT.NULL);

        String[] languages = new String[] { "Java", "C", "C++", "SmallTalk" };

        Arrays.sort(languages);

        for (int i = 0; i < languages.length; i++)
            combo.add(languages[i]);

        //combo.add("Perl", 5);
        //combo.setItem(5, "Perl");

        combo.addSelectionListener(new SelectionListener() {
            public void widgetSelected(SelectionEvent e) {
                System.out.println("Selected index: " + combo.getSelectionIndex() + ", selected item: "
                        + combo.getItem(combo.getSelectionIndex()) + ", text content in the text field: "
                        + combo.getText());
            }

            public void widgetDefaultSelected(SelectionEvent e) {
                System.out.println("Default selected index: " + combo.getSelectionIndex() + ", selected item: "
                        + (combo.getSelectionIndex() == -1 ? "<null>" : combo.getItem(combo.getSelectionIndex()))
                        + ", text content in the text field: " + combo.getText());
                String text = combo.getText();
                if (combo.indexOf(text) < 0) { // Not in the list yet. 
                    combo.add(text);
                    // Re-sort
                    String[] items = combo.getItems();
                    Arrays.sort(items);
                    combo.setItems(items);
                }
            }
        });

        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() {

    }

    public static void main(String[] args) {
        new SampleCombo();
    }
}