/*******************************************************************************
* Copyright (c) 2000, 2007 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;
/*
* Table example snippet: compute the number of visible rows in a table
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
public class Snippet253 {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
FillLayout layout = new FillLayout (SWT.VERTICAL);
shell.setLayout (layout);
final Table table = new Table (shell, SWT.NONE);
for (int i=0; i<32; i++) {
TableItem item = new TableItem (table, SWT.NONE);
item.setText ("Item " + (i+1) + " is quite long");
}
final Button button = new Button (shell, SWT.PUSH);
button.setText ("Visible Items []");
button.addListener (SWT.Selection, new Listener () {
@Override
public void handleEvent (Event e) {
Rectangle rect = table.getClientArea ();
int itemHeight = table.getItemHeight ();
int headerHeight = table.getHeaderHeight ();
int visibleCount = (rect.height - headerHeight + itemHeight - 1) / itemHeight;
button.setText ("Visible Items [" + visibleCount + "]");
}
});
shell.setSize(200, 250);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
display.dispose();
}
}