/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.examples.multipageeditor;

import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

/**
 * Utility class which helps with managing messages.
 */
/* package */ class MessageUtil {

	private static final String RESOURCE_BUNDLE= "org.eclipse.ui.examples.multipageeditor.messages";//$NON-NLS-1$

	private static ResourceBundle fgResourceBundle= ResourceBundle.getBundle(RESOURCE_BUNDLE);

	private MessageUtil() {
		// prevent instantiation of class
	}

	/**
	 * Returns the formatted message for the given key in
	 * the resource bundle. 
	 *
	 * @param key the resource name
	 * @param args the message arguments
	 * @return the string
	 */	
	public static String format(String key, Object[] args) {
		return MessageFormat.format(getString(key),args);
	}

	/**
	 * Returns the resource object with the given key in
	 * the resource bundle. If there isn't any value under
	 * the given key, the key is returned, surrounded by '!'s.
	 *
	 * @param key the resource name
	 * @return the string
	 */	
	public static String getString(String key) {
		try {
			return fgResourceBundle.getString(key);
		} catch (MissingResourceException e) {
			return "!" + key + "!";//$NON-NLS-2$ //$NON-NLS-1$
		}
	}
}