| /******************************************************************************* |
| * Copyright (c) 2000, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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); |
| shell.setText("Snippet 19"); |
| 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; |
| } |
| } |