/*******************************************************************************
* Copyright (c) 2000, 2005 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.gef.examples.logicdesigner.model;
import org.eclipse.jface.viewers.ICellEditorValidator;
import org.eclipse.gef.examples.logicdesigner.LogicMessages;
public class LogicNumberCellEditorValidator
implements ICellEditorValidator {
private static LogicNumberCellEditorValidator instance;
public static LogicNumberCellEditorValidator instance() {
if (instance == null)
instance = new LogicNumberCellEditorValidator();
return instance;
}
public String isValid(Object value) {
try {
new Integer((String)value);
return null;
} catch (NumberFormatException exc) {
return LogicMessages.CellEditorValidator_NotANumberMessage;
}
}
}