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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. and others. All rights reserved.
* 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/
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.ui.controls.validator;
import org.eclipse.swt.events.VerifyEvent;
/**
* Verify listener for text widgets to receive numbers.
*/
public class NumberVerifyListener extends RegexVerifyListener {
// regular expressions
protected static final String NUMBER_REGEX = "([0-9]*)"; //$NON-NLS-1$
private int min = 0;
private int max = Integer.MAX_VALUE;
/**
* Constructor
*/
public NumberVerifyListener() {
this(-1, -1);
}
/**
* Constructor
*
* @param min The minimum allowed input.
* If less than zero the value is set to 0.
* @param max The maximum allowed input.
* If less than zero the value is set to INTEGERE.MAX_VALUE.
*/
public NumberVerifyListener(int min, int max) {
this(NO_ATTR, NUMBER_REGEX, min, max);
}
/**
* Constructor
*
* @param attributes The verify listener attributes.
* @param regEx The regular expression.
* @param min The minimum allowed input.
* If less than zero the value is set to 0.
* @param max The maximum allowed input.
* If less than zero the value is set to INTEGERE.MAX_VALUE.
*/
public NumberVerifyListener(int attributes, String regEx, int min, int max) {
super(attributes, regEx);
min = (min >= 0) ? min : 0;
max = (max >= 0) ? max : Integer.MAX_VALUE;
this.min = Math.min(min, max);
this.max = Math.max(min, max);
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.controls.validator.RegexVerifyListener#verifyText(org.eclipse.swt.events.VerifyEvent)
*/
@Override
public void verifyText(VerifyEvent e) {
super.verifyText(e);
String fullText = getFullText(e);
if (e.doit && fullText != null && fullText.length() > 0 && !fullText.equalsIgnoreCase("0x")) { //$NON-NLS-1$
try {
int value = Integer.decode(fullText).intValue();
if (value < min || value > max) {
e.doit = false;
}
}
catch (Exception ex) {
e.doit = false;
}
}
}
}
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