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/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * 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:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.framework.ui.skynet.artifact;

import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.osee.framework.jdk.core.util.Strings;

/**
 * @author Roberto E. Escobar
 */
public final class NonBlankAndNotSameAsStartingValidator implements IInputValidator {
   private final String startingName;

   public NonBlankAndNotSameAsStartingValidator(String startingName) {
      this.startingName = startingName;
   }

   @Override
   public String isValid(String newText) {
      String errorMessage = null;
      if (!Strings.isValid(newText)) {
         errorMessage = "The new name cannot be blank";
      } else if (Strings.isValid(startingName) && startingName.equals(newText)) {
         errorMessage = "The new name must be different";
      }
      return errorMessage;
   }
}