Unit.java

/*
 * This file is part of LaTeXDraw.
 * Copyright (c) 2005-2017 Arnaud BLOUIN
 * LaTeXDraw 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; either version 2 of the License, or (at your option) any later version.
 * LaTeXDraw is distributed without any warranty; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 */
package net.sf.latexdraw.util;

import java.util.Arrays;
import org.eclipse.jdt.annotation.NonNull;

/**
 * The different possible units used by the rulers.
 * @author Arnaud Blouin
 */
public enum Unit {
	/** Centimetre */
	CM {
		@Override
		public String getLabel() {
			return LangTool.INSTANCE.getBundle().getString("XScale.cm"); //$NON-NLS-1$
		}
	},
	/** Inch */
	INCH {
		@Override
		public String getLabel() {
			return LangTool.INSTANCE.getBundle().getString("XScale.inch"); //$NON-NLS-1$
		}
	};

	/**
	 * @return The label of the unit.
	 * @since 3.0
	 */
	public abstract String getLabel();

	/**
	 * @param label The label to test.
	 * @return The unit corresponding to the given label, or CM.
	 * @since 3.0
	 */
	public static @NonNull Unit getUnit(final String label) {
		return Arrays.stream(values()).filter(it -> it.getLabel().equals(label)).findFirst().orElse(CM);
	}
}