| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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; |
| |
| /* |
| * 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.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.addListener (SWT.Verify, e -> { |
| String string = e.text; |
| char [] chars = new char [string.length ()]; |
| string.getChars (0, chars.length, chars, 0); |
| for (int i=0; i<chars.length; i++) { |
| if (!('0' <= chars [i] && chars [i] <= '9')) { |
| e.doit = false; |
| return; |
| } |
| } |
| }); |
| shell.open (); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| } |