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//------------------------------------------------------------------------------
// Copyright (c) 2009 Anyware Technologies 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:
// Anyware Technologies - initial API and implementation
//------------------------------------------------------------------------------
package org.eclipse.papyrus.documentation.view.actions;
import org.eclipse.jface.dialogs.IInputValidator;
/**
* Validates whether the text found in the input field of the
* dialog forms a positive number.
*/
class NumberValidator implements IInputValidator {
/*
* @see IInputValidator#isValid(String)
*/
public String isValid(String input) {
if (input == null || input.length() == 0)
return " "; //$NON-NLS-1$
try {
int i= Integer.parseInt(input);
if (i < 0)
return "Invalid number";
} catch (NumberFormatException x) {
return "Not a number";
}
return null;
}
}
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