Bug 530764 - Improve readability of Snippet19
Change-Id: Ided3343821270cb4ea760c423756886dce1c8713
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet19.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet19.java
index 77d7b3b..1ab24ef 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet19.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet19.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2000, 2016 IBM Corporation and others.
+ * 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
@@ -7,6 +7,7 @@
*
* Contributors:
* IBM Corporation - initial API and implementation
+ * Lars Vogel <Lars.Vogel@vogella.com> - Bug 530764
*******************************************************************************/
package org.eclipse.swt.snippets;
@@ -17,32 +18,30 @@
* 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.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;
- }
+ 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();
}
- });
- shell.open ();
- while (!shell.isDisposed()) {
- if (!display.readAndDispatch ()) display.sleep ();
+ display.dispose();
}
- display.dispose ();
-}
+
+ private static void ensureTextContainsOnlyDigits(VerifyEvent e) {
+ String string = e.text;
+ e.doit = string.matches("\\d*");
+ return;
+ }
}
