/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 * 
 *    (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */
package org.geotools.styling;

import org.opengis.filter.expression.Expression;


/**
 * A class to hold Channel information for use in ChannelSelction objects.
 * <pre>
 * <xs:complexType name="SelectedChannelType">
 *   <xs:sequence>
 *     <xs:element ref="sld:SourceChannelName"/>
 *     <xs:element ref="sld:ContrastEnhancement" minOccurs="0"/>
 *   </xs:sequence>
 * </xs:complexType>
 * <xs:element name="SourceChannelName" type="xs:string"/>
 *  </pre>
 *
 * @author iant
 *
 * @source $URL$
 */
public interface SelectedChannelType extends org.opengis.style.SelectedChannelType {
    
    /**
     * Set the source channel name.
     * @param name name of the source channel
     */
    public void setChannelName(String name);

    /**
     * Returns the channel's name.
     *
     * @return Source channel name
     */
    public String getChannelName();

    /**
     * @deprecated Use {@link #setContrastEnhancement(ContrastEnhancement))} instead.
     */
    public void setContrastEnhancement(Expression gammaValue);

    public void setContrastEnhancement(org.opengis.style.ContrastEnhancement enhancement);

    public ContrastEnhancement getContrastEnhancement();

    public void accept(org.geotools.styling.StyleVisitor visitor);
    
}