org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/i18n/I18nUtil.java

/**
 * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * 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/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *         Florian Pirchner - Initial implementation
 */
package org.eclipse.osbp.runtime.common.i18n;

import java.text.DecimalFormat;
import java.util.Locale;

// TODO: Auto-generated Javadoc
/**
 * The Class I18nUtil.
 */
public class I18nUtil {
	
	/**
	 * Formats the enum literal.
	 *
	 * @param i18nService the i18n service
	 * @param value the value
	 * @param locale the locale
	 * @return the string
	 */
	public static String translateEnum(II18nService i18nService, Object value,
			Locale locale) {
		Enum<?> enumx = (Enum<?>) value;
		String i18nKey = getI18nKey(enumx.getClass().getName(), enumx);
		String result = null;
		if (i18nService != null) {
			result = i18nService.getValue(i18nKey, locale);
		}

		if (result == null || result.trim().equals("")) {
			result = enumx.name();
		}

		return result;
	}

	/**
	 * Formats the boolean value.
	 *
	 * @param i18nService the i18n service
	 * @param value the value
	 * @param locale the locale
	 * @return the string
	 */
	public static String translateBoolean(II18nService i18nService,
			Boolean value, Locale locale) {
		if (i18nService == null) {
			return "";
		}
		String result = i18nService.getValue(Boolean.class.getName() + "."
				+ value.toString(), locale);

		if (result == null || result.trim().equals("")) {
			result = value.toString();
		}

		return result;
	}

	/**
	 * Returns the i18n key for the enum and its literal.
	 *
	 * @param enumName the enum name
	 * @param literal the literal
	 * @return the i18n key
	 */
	public static String getI18nKey(String enumName, Enum<?> literal) {
		return enumName + "." + literal.name();
	}

	/**
	 * Returns the i18n key for the enum and its literal.
	 *
	 * @param enumX the enum x
	 * @return the i18n key
	 */
	public static String getI18nKey(Enum<?> enumX) {
		return getI18nKey(enumX.getClass().getName(), enumX);
	}

	/**
	 * Returns the i18nImageKey for the Enum name and literal.
	 *
	 * @param enumName the enum name
	 * @param literal the literal
	 * @return the image i18n key
	 */
	public static String getImageI18nKey(String enumName, Enum<?> literal) {
		return enumName + "." + literal.name() + ".image";
	}

	/**
	 * Returns the image key for the given label key.
	 *
	 * @param i18nLabelKey the i18n label key
	 * @return the image key
	 */
	public static String getImageKey(String i18nLabelKey) {
		String iconKey = i18nLabelKey + ".image";
		return iconKey;
	}

	/**
	 * Translates number values to their locale representation.
	 *
	 * @param i18nService the i18n service
	 * @param number the number
	 * @param locale the locale
	 * @return the string
	 */
	public static String translateNumber(II18nService i18nService,
			Number number, Locale locale) {

		if (number instanceof Short || number instanceof Integer
				|| number instanceof Byte || number instanceof Long) {
			return DecimalFormat.getIntegerInstance(locale).format(number);
		} else {
			return DecimalFormat.getNumberInstance(locale).format(number);
		}
	}
}