bundles/core/org.eclipse.apogy.core.environment.earth.surface.ui/src/org/eclipse/apogy/core/environment/earth/surface/ui/databindings/DateToSideralTimeStringConverter.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Pierre Allard,
 *     Regent L'Archeveque - initial API and implementation
 *     
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.core.environment.earth.surface.ui.databindings;

import java.util.Date;

import org.eclipse.apogy.core.environment.earth.surface.AstronomyUtils;
import org.eclipse.core.databinding.conversion.Converter;

public class DateToSideralTimeStringConverter extends Converter {
	private double observerLongitude = 0.0;

	public DateToSideralTimeStringConverter() {
		super(Date.class, String.class);
	}

	public DateToSideralTimeStringConverter(double observerLongitude) {
		super(Date.class, String.class);
		setObserverLongitude(observerLongitude);
	}

	public double getObserverLongitude() {
		return this.observerLongitude;
	}

	public void setObserverLongitude(double observerLongitude) {
		this.observerLongitude = observerLongitude;
	}

	@Override
	public Object convert(Object fromObject) {
		Date date = (Date) fromObject;
		double sideralTime = AstronomyUtils.INSTANCE.getLocalSideralTime(date, getObserverLongitude());
		return AstronomyUtils.INSTANCE.convertToHHmmssString(sideralTime);
	}

}