Snippet144.java Source code

Introduction

Here is the source code for Snippet144.java

Source

/*
 * 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();
    }
}