Create a virtual SWT table and add 1000 entries to it every 500 ms



/*
 * 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 ();
}
}

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Create a virtual SWT table and add 1000 entries to it every 500 ms : Table « SWT JFace Eclipse « Java

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