BusyIndicatorTest.java Source code

Introduction

Here is the source code for BusyIndicatorTest.java

Source

//Send questions, comments, bug reports, etc. to the authors:

//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)

import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * This program demonstrates BusyIndicator
 */
public class BusyIndicatorTest {
    // The amount of time to sleep (in ms)
    private static final int SLEEP_TIME = 3000;

    // Labels for the button
    private static final String RUN = "Press to Run";
    private static final String IS_RUNNING = "Running...";

    /**
     * Runs the application
     */
    private void run() {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("BusyIndicator Test");
        createContents(shell);
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }

    /**
     * Create the window's contents
     * 
     * @param shell the parent shell
     */
    private void createContents(Shell shell) {
        shell.setLayout(new FillLayout());
        final Button button = new Button(shell, SWT.PUSH);
        button.setText(RUN);
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                // Change the button's text
                button.setText(IS_RUNNING);

                // Show the busy indicator
                BusyIndicator.showWhile(button.getDisplay(), new SleepThread(SLEEP_TIME));

                // Thread has completed; reset the button's text
                button.setText(RUN);
            }
        });
    }

    /**
     * Application's entry point
     * 
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new BusyIndicatorTest().run();
    }
}

/**
 * This class is a thread that sleeps the specified number of milliseconds
 */

class SleepThread extends Thread {
    private long ms;

    /**
     * SleepThread constructor
     * 
     * @param ms the number of milliseconds to sleep
     */
    public SleepThread(long ms) {
        this.ms = ms;
    }

    /**
     * Runs the thread
     */
    public void run() {
        try {
            sleep(ms);
        } catch (InterruptedException e) {
        }
    }
}