plugins/valueeditors/src/main/java/org/apache/directory/studio/valueeditors/integer/IntegerValueEditor.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */

package org.apache.directory.studio.valueeditors.integer;


import java.math.BigDecimal;

import org.apache.directory.studio.valueeditors.AbstractDialogStringValueEditor;
import org.eclipse.swt.widgets.Shell;


/**
 * Implementation of IValueEditor for integer values.
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
public class IntegerValueEditor extends AbstractDialogStringValueEditor
{
    /**
     * {@inheritDoc}
     * 
     * This implementation opens the IntegerDialog.
     */
    public boolean openDialog( Shell shell )
    {
        Object value = getValue();

        if ( value instanceof String )
        {
            BigDecimal integer = null;
            boolean isNewOrMalformedValue = false;

            try
            {
                integer = new BigDecimal( ( String ) value );
            }
            catch ( NumberFormatException e )
            {
                integer = new BigDecimal( 0 );
                isNewOrMalformedValue = true;
            }

            IntegerDialog dialog = new IntegerDialog( shell, integer );
            if ( dialog.open() == IntegerDialog.OK && ( dialog.isDirty() || isNewOrMalformedValue ) )
            {
                BigDecimal newValue = dialog.getInteger();
                if ( newValue != null )
                {
                    setValue( newValue.toString() );
                    return true;
                }
            }
        }

        return false;
    }
}