Snippet151.java Source code

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Here is the source code for Snippet151.java

Source

/*
 * Create a virtual table and add 1000 entries to it every 500 ms.
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import java.util.Arrays;
import java.util.Random;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;

public class Snippet151 {

    static int[] data = new int[0];

    public static void main(String[] args) {
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        final Table table = new Table(shell, SWT.BORDER | SWT.VIRTUAL);
        table.addListener(SWT.SetData, new Listener() {
            public void handleEvent(Event e) {
                TableItem item = (TableItem) e.item;
                int index = table.indexOf(item);
                item.setText("Item " + data[index]);
            }
        });
        Thread thread = new Thread() {
            public void run() {
                int count = 0;
                Random random = new Random();
                while (count++ < 500) {
                    if (table.isDisposed())
                        return;
                    // add 10 random numbers to array and sort
                    int grow = 10;
                    int[] newData = new int[data.length + grow];
                    System.arraycopy(data, 0, newData, 0, data.length);
                    int index = data.length;
                    data = newData;
                    for (int j = 0; j < grow; j++) {
                        data[index++] = random.nextInt();
                    }
                    Arrays.sort(data);
                    display.syncExec(new Runnable() {
                        public void run() {
                            if (table.isDisposed())
                                return;
                            table.setItemCount(data.length);
                            table.clearAll();
                        }
                    });
                    try {
                        Thread.sleep(500);
                    } catch (Throwable t) {
                    }
                }
            }
        };
        thread.start();
        shell.open();
        while (!shell.isDisposed() || thread.isAlive()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}