/**
 * Copyright (c) 2011, University of Konstanz, Distributed Systems Group
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the University of Konstanz nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.sirix.gui.view.sunburst;

import org.sirix.gui.view.EHover;

import processing.core.PConstants;
import processing.core.PGraphics;

/**
 * Determines if a {@link SunburstItem} has to be greyed out or actually
 * blackened.
 * 
 * @author Johannes Lichtenberger, University of Konstanz
 * 
 */
public enum EGreyState {
	/**
	 * Current {@link SunburstItem} doesn't have to be greyed out.
	 */
	NO {
		@Override
		public void setStroke(final PGraphics paramGraphic,
				final PGraphics paramRecorder, int paramColor, final EHover paramHover) {
			if (paramRecorder != null) {
				if (paramHover == EHover.TRUE) {
					hover(paramRecorder);
				} else {
					paramRecorder.stroke(paramColor);
				}
			}
			if (paramHover == EHover.TRUE) {
				hover(paramGraphic);
			} else {
				paramGraphic.stroke(paramColor);
			}
		}

		private void hover(final PGraphics paramGraphic) {
			paramGraphic.colorMode(PConstants.RGB);
			paramGraphic.stroke(200, 0, 0);
			paramGraphic.colorMode(PConstants.HSB);
		}
	},

	/**
	 * Current {@link SunburstItem} has to be greyed out.
	 */
	YES {
		@Override
		public void setStroke(PGraphics paramGraphic, PGraphics paramRecorder,
				int paramColor, EHover paramHover) {
			if (paramRecorder != null) {
				paramGraphic.stroke(0);
			}
			paramGraphic.stroke(0);
		}
	};

	/**
	 * Set stroke.
	 * 
	 * @param paramGraphic
	 *          {@link PGraphics} instance
	 * @param paramRecorder
	 *          {@link PGraphics} instance for recording PDFs
	 * @param paramColor
	 *          the color to use
	 * @param paramHover
	 *          determines if current item should be hovered or not
	 */
	public abstract void setStroke(final PGraphics paramGraphic,
			final PGraphics paramRecorder, final int paramColor,
			final EHover paramHover);
}
