/*******************************************************************************
 * Copyright (c) 2014, 2016 Orange.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *******************************************************************************/
package org.eclipse.om2m.sdt.home.actions;

import org.eclipse.om2m.sdt.args.Command;
import org.eclipse.om2m.sdt.exceptions.AccessException;
import org.eclipse.om2m.sdt.exceptions.ActionException;
import org.eclipse.om2m.sdt.home.types.ActionType;

public abstract class PreviousTrack extends Command {
	
	public PreviousTrack(String name) {
		super(name, ActionType.previousTrack);
		setDoc("Go back to a previous chapter, section or similar marker in the media.");
	}

	public final void previousTrack() throws AccessException, ActionException {
		invoke();
	}
	
	abstract protected void doPreviousTrack() throws ActionException;
	
	@Override
	protected Object doInvoke() throws ActionException {
		doPreviousTrack();
		return null;
	}

}