org.alfresco.web.config.LanguagesElementReader.java Source code

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Here is the source code for org.alfresco.web.config.LanguagesElementReader.java

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/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.web.config;

import java.util.Iterator;

import org.springframework.extensions.config.ConfigElement;
import org.springframework.extensions.config.ConfigException;
import org.springframework.extensions.config.xml.elementreader.ConfigElementReader;
import org.dom4j.Element;

/**
 * Custom element reader to parse config for languages
 * 
 * @author Gavin Cornwell
 */
public class LanguagesElementReader implements ConfigElementReader {
    public static final String ELEMENT_LANGUAGE = "language";
    public static final String ATTRIBUTE_LOCALE = "locale";

    /**
     * @see org.springframework.extensions.config.xml.elementreader.ConfigElementReader#parse(org.dom4j.Element)
     */
    @SuppressWarnings("unchecked")
    public ConfigElement parse(Element element) {
        LanguagesConfigElement configElement = null;

        if (element != null) {
            String name = element.getName();
            if (name.equals(LanguagesConfigElement.CONFIG_ELEMENT_ID) == false) {
                throw new ConfigException(
                        "LanguagesElementReader can only parse " + LanguagesConfigElement.CONFIG_ELEMENT_ID
                                + " elements, the element passed was '" + name + "'");
            }

            configElement = new LanguagesConfigElement();

            Iterator<Element> langsItr = element.elementIterator(ELEMENT_LANGUAGE);
            while (langsItr.hasNext()) {
                Element language = langsItr.next();
                String localeCode = language.attributeValue(ATTRIBUTE_LOCALE);
                String label = language.getTextTrim();

                if (localeCode != null && localeCode.length() != 0 && label != null && label.length() != 0) {
                    // store the language code against the display label
                    configElement.addLanguage(localeCode, label);
                }
            }
        }

        return configElement;
    }
}