Create a SWT table with 1,000,000 items : Table « SWT JFace Eclipse « Java

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3. Table

Create a SWT table with 1,000,000 items

/*
 * Virtual Table example snippet: create a table with 1,000,000 items
 *
 * 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 org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
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 Snippet144 {

  static final int COUNT = 1000000;

  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new RowLayout(SWT.VERTICAL));
    final Table table = new Table(shell, SWT.VIRTUAL | SWT.BORDER);
    table.addListener(SWT.SetData, new Listener() {
      public void handleEvent(Event event) {
        TableItem item = (TableItem) event.item;
        int index = table.indexOf(item);
        item.setText("Item " + index);
        System.out.println(item.getText());
      }
    });
    table.setLayoutData(new RowData(200, 200));
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Add Items");
    final Label label = new Label(shell, SWT.NONE);
    button.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event event) {
        long t1 = System.currentTimeMillis();
        table.setItemCount(COUNT);
        long t2 = System.currentTimeMillis();
        label.setText("Items: " + COUNT + ", Time: " + (t2 - t1)
            + " (ms)");
        shell.layout();
      }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

           
       

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