/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.erlide.ui.util.eclipse.text;

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

/**
 * Helper class to get NLSed messages.
 *
 * @since 3.3
 */
final class HTMLMessages {

    private static final String RESOURCE_BUNDLE = HTMLMessages.class.getName();

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

    private HTMLMessages() {
    }

    /**
     * Gets a string from the resource bundle.
     *
     * @param key
     *            the string used to get the bundle value, must not be null
     * @return the string from the resource bundle
     */
    public static String getString(final String key) {
        try {
            return fgResourceBundle.getString(key);
        } catch (final MissingResourceException e) {
            return "!" + key + "!";//$NON-NLS-2$ //$NON-NLS-1$
        }
    }

    /**
     * Gets a string from the resource bundle and formats it with the given
     * arguments.
     *
     * @param key
     *            the string used to get the bundle value, must not be null
     * @param args
     *            the arguments used to format the string
     * @return the formatted string
     */
    public static String getFormattedString(final String key, final Object[] args) {
        String format = null;
        try {
            format = fgResourceBundle.getString(key);
        } catch (final MissingResourceException e) {
            return "!" + key + "!";//$NON-NLS-2$ //$NON-NLS-1$
        }
        return MessageFormat.format(format, args);
    }

    /**
     * Gets a string from the resource bundle and formats it with the given
     * argument.
     *
     * @param key
     *            the string used to get the bundle value, must not be null
     * @param arg
     *            the argument used to format the string
     * @return the formatted string
     */
    public static String getFormattedString(final String key, final Object arg) {
        String format = null;
        try {
            format = fgResourceBundle.getString(key);
        } catch (final MissingResourceException e) {
            return "!" + key + "!";//$NON-NLS-2$ //$NON-NLS-1$
        }
        return MessageFormat.format(format, new Object[] { arg != null ? arg : "" });
    }
}