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/*******************************************************************************
* Copyright (c) 2000, 2018 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
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 530764
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Text example snippet: verify input (only allow digits)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
public class Snippet19 {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
Text text = new Text(shell, SWT.BORDER | SWT.V_SCROLL);
Rectangle clientArea = shell.getClientArea();
text.setBounds(clientArea.x + 10, clientArea.y + 10, 200, 200);
text.addVerifyListener(Snippet19::ensureTextContainsOnlyDigits);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private static void ensureTextContainsOnlyDigits(VerifyEvent e) {
String string = e.text;
e.doit = string.matches("\\d*");
return;
}
}
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