01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.management.ui.views;
22
23 import org.eclipse.swt.events.VerifyEvent;
24 import org.eclipse.swt.events.VerifyListener;
25
26 /**
27 * Implementation of VeryfyListener for numeric values
28 * @author Bhupendra Bhardwaj
29 */
30 public class NumberVerifyListener implements VerifyListener
31 {
32 public void verifyText(VerifyEvent event)
33 {
34 String string = event.text;
35 char [] chars = new char [string.length ()];
36 string.getChars (0, chars.length, chars, 0);
37 for (int i=0; i<chars.length; i++)
38 {
39 if (!('0' <= chars [i] && chars [i] <= '9'))
40 {
41 event.doit = false;
42 return;
43 }
44 }
45 }
46 }
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