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/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Virtual Table example snippet: create a table with 1,000,000 items (lazy, page size 64)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.0
*/
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
public class Snippet201 {
static final int PAGE_SIZE = 64;
static final int COUNT = 100000;
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);
int start = index / PAGE_SIZE * PAGE_SIZE;
int end = Math.min (start + PAGE_SIZE, table.getItemCount ());
for (int i = start; i < end; i++) {
item = table.getItem (i);
item.setText ("Item " + i);
}
}
});
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) [page=" + PAGE_SIZE + "]");
shell.layout ();
}
});
shell.pack ();
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
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