PortletResourceBundles.java :  » Portal » liferay-portal-4.4.2 » com » liferay » portlet » Java Open Source

/**
 * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.liferay.portlet;

import com.liferay.portal.kernel.util.LocaleUtil;
import com.liferay.util.CollectionFactory;

import java.io.ByteArrayInputStream;
import java.io.IOException;

import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.PageContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.util.RequestUtils;

/**
 * <a href="PortletResourceBundles.java.html"><b><i>View Source</i></b></a>
 *
 * @author Brian Wing Shun Chan
 *
 */
public class PortletResourceBundles {

  public static String getString(PageContext pageContext, String key) {
    return _instance._getString(pageContext, key);
  }

  public static String getString(Locale locale, String key) {
    return _instance._getString(locale, key);
  }

  public static String getString(String languageId, String key) {
    return _instance._getString(languageId, key);
  }

  public static String getString(
    String servletContextName, String languageId, String key) {

    return _instance._getString(servletContextName, languageId, key);
  }

  public static void put(
    String servletContextName, String languageId, ResourceBundle bundle) {

    _instance._put(servletContextName, languageId, bundle);
  }

  public static void remove(String servletContextName) {
    _instance._remove(servletContextName);
  }

  private PortletResourceBundles() {
    _contexts = CollectionFactory.getSyncHashMap(new LinkedHashMap());
  }

  private ResourceBundle _getBundle(
    String servletContextName, String languageId) {

    Map bundles = _getBundles(servletContextName);

    return _getBundle(bundles, languageId);
  }

  private ResourceBundle _getBundle(Map bundles, String languageId) {
    ResourceBundle bundle = (ResourceBundle)bundles.get(languageId);

    if (bundle == null) {
      try {
        bundle = new PropertyResourceBundle(
          new ByteArrayInputStream(new byte[0]));

        bundles.put(languageId, bundle);
      }
      catch (IOException ioe) {
        _log.error(ioe);
      }
    }

    return bundle;
  }

  private Map _getBundles(String servletContextName) {
    Map bundles = (Map)_contexts.get(servletContextName);

    if (bundles == null) {
      bundles = CollectionFactory.getHashMap();

      _contexts.put(servletContextName, bundles);
    }

    return bundles;
  }

  private String _getString(PageContext pageContext, String key) {
    Locale locale = RequestUtils.getUserLocale(
      (HttpServletRequest)pageContext.getRequest(), null);

    return _getString(locale, key);
  }

  private String _getString(Locale locale, String key) {
    return _getString(LocaleUtil.toLanguageId(locale), key);
  }

  private String _getString(String languageId, String key) {
    return _getString(null, languageId, key);
  }

  private String _getString(
    String servletContextName, String languageId, String key) {

    if (servletContextName != null) {
      ResourceBundle bundle = _getBundle(servletContextName, languageId);

      return bundle.getString(key);
    }

    Iterator itr = _contexts.entrySet().iterator();

    while (itr.hasNext()) {
      Map.Entry entry = (Map.Entry)itr.next();

      Map bundles = (Map)entry.getValue();

      ResourceBundle bundle = _getBundle(bundles, languageId);

      try {
        return bundle.getString(key);
      }
      catch (MissingResourceException mre) {
      }
    }

    return null;
  }

  private void _put(
    String servletContextName, String languageId, ResourceBundle bundle) {

    Map bundles = _getBundles(servletContextName);

    bundles.put(languageId, bundle);
  }

  private void _remove(String servletContextName) {
    _contexts.remove(servletContextName);
  }

  private static Log _log = LogFactory.getLog(PortletResourceBundles.class);

  private static PortletResourceBundles _instance =
    new PortletResourceBundles();

  private Map _contexts;

}