SpreadsheetTraceable.java

/* 
GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org

This file is part of GeoGebra.

This program is free software; you can redistribute it and/or modify it 
under the terms of the GNU General Public License as published by 
the Free Software Foundation.

*/
package org.geogebra.common.kernel.geos;

import java.util.ArrayList;

import org.geogebra.common.kernel.arithmetic.ExpressionValue;
import org.geogebra.common.util.SpreadsheetTraceSettings;

/**
 * @author Michael Borcherds
 * 
 *         NumberValue extends SpreadsheetTraceable as all NumberValues can be
 *         traced to spreadsheet
 * 
 *         default implementations in GeoElement TODO this interface should
 *         extend GeoElementND and should not be extended by NumberValue
 */
public interface SpreadsheetTraceable extends ExpressionValue {

	/**
	 * @param al
	 *            list containing GeoNumeric / GeoAngle
	 */
	public void addToSpreadsheetTraceList(ArrayList<GeoNumeric> al);

	/**
	 * @return list of column headings
	 */
	public ArrayList<GeoText> getColumnHeadings();

	/**
	 * @return spreadsheet trace settings
	 */
	public SpreadsheetTraceSettings getTraceSettings();

}