/*
 *    GeoTools - OpenSource mapping toolkit
 *    http://geotools.org
 *    (C) 2002-2006, GeoTools Project Managment Committee (PMC)
 *
 *    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;
import org.geotools.event.GTComponent;


/**
 * A basic interface for objects which can hold color map entries.
 * <pre>
 *  &lt;xs:element name="ColorMapEntry"&gt;
 *  &lt;xs:complexType&gt;
 *  &lt;xs:attribute name="color" type="xs:string" use="required"/&gt;
 *  &lt;xs:attribute name="opacity" type="xs:double"/&gt;
 *  &lt;xs:attribute name="quantity" type="xs:double"/&gt;
 *  &lt;xs:attribute name="label" type="xs:string"/&gt;
 *  &lt;/xs:complexType&gt;
 *  &lt;/xs:element&gt;
 *  </pre>
 * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/library/api/src/main/java/org/geotools/styling/ColorMapEntry.java $
 */
public interface ColorMapEntry extends GTComponent {
    String getLabel();

    void setLabel(String label);

    void setColor(Expression color);

    Expression getColor();

    void setOpacity(Expression opacity);

    Expression getOpacity();

    void setQuantity(Expression quantity);

    Expression getQuantity();

    void accept(StyleVisitor visitor);
}
