PortletURLUtil.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.portlet.LiferayPortletURL;

import java.util.Enumeration;

import javax.portlet.PortletException;
import javax.portlet.PortletMode;
import javax.portlet.PortletURL;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.WindowState;

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

  public static PortletURL getCurrent(RenderRequest req, RenderResponse res) {
    PortletURL portletURL = res.createRenderURL();

    Enumeration enu = req.getParameterNames();

    while (enu.hasMoreElements()) {
      String param = (String)enu.nextElement();
      String[] values = req.getParameterValues(param);

      boolean addParam = true;

      // Don't set paramter values that are over 32 kb. See LEP-1755.

      for (int i = 0; i < values.length; i++) {
        if (values[i].length() > _CURRENT_URL_PARAMETER_THRESHOLD) {
          addParam = false;

          break;
        }
      }

      if (addParam) {
        portletURL.setParameter(param, values);
      }
    }

    return portletURL;
  }

  public static PortletURL clone(PortletURL portletURL, RenderResponse res)
    throws PortletException {

    LiferayPortletURL liferayPortletURL = (LiferayPortletURL)portletURL;

    return clone(liferayPortletURL, liferayPortletURL.isAction(), res);
  }

  public static PortletURL clone(
      PortletURL portletURL, boolean action, RenderResponse res)
    throws PortletException {

    LiferayPortletURL liferayPortletURL = (LiferayPortletURL)portletURL;

    return clone(liferayPortletURL, action, res);
  }

  public static PortletURL clone(
      LiferayPortletURL liferayPortletURL, boolean action,
      RenderResponse res)
    throws PortletException {

    LiferayPortletURL newURLImpl = null;

    if (action) {
      newURLImpl = (LiferayPortletURL)res.createActionURL();
    }
    else {
      newURLImpl = (LiferayPortletURL)res.createRenderURL();
    }

    newURLImpl.setPortletId(liferayPortletURL.getPortletId());

    WindowState windowState = liferayPortletURL.getWindowState();

    if (windowState != null) {
      newURLImpl.setWindowState(windowState);
    }

    PortletMode portletMode = liferayPortletURL.getPortletMode();

    if (portletMode != null) {
      newURLImpl.setPortletMode(portletMode);
    }

    newURLImpl.setParameters(liferayPortletURL.getParameterMap());

    return newURLImpl;
  }

  private static final int _CURRENT_URL_PARAMETER_THRESHOLD = 32768;

}