Package com.liferay.portlet

Source Code of com.liferay.portlet.StrutsPortlet

/**
* Copyright (c) 2000-2005 Liferay, LLC. 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 java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import com.dotcms.repackage.javax.portlet.ActionRequest;
import com.dotcms.repackage.javax.portlet.ActionResponse;
import com.dotcms.repackage.javax.portlet.GenericPortlet;
import com.dotcms.repackage.javax.portlet.PortletConfig;
import com.dotcms.repackage.javax.portlet.PortletException;
import com.dotcms.repackage.javax.portlet.PortletRequest;
import com.dotcms.repackage.javax.portlet.RenderRequest;
import com.dotcms.repackage.javax.portlet.RenderResponse;
import javax.servlet.ServletException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.dotcms.repackage.org.apache.struts.Globals;
import com.dotcms.repackage.org.apache.struts.config.ModuleConfig;

import com.liferay.portal.struts.PortletRequestProcessor;
import com.liferay.portal.util.PortalUtil;
import com.liferay.portal.util.WebKeys;
import com.liferay.util.GetterUtil;
import com.liferay.util.Validator;

/**
* <a href="StrutsPortlet.java.html"><b><i>View Source</i></b></a>
*
* @author  Brian Wing Shun Chan
* @version $Revision: 1.27 $
*
*/
public class StrutsPortlet extends GenericPortlet {

  public void init(PortletConfig config) throws PortletException {
    super.init(config);

    _portletConfig = (PortletConfigImpl)config;

    _editAction = getInitParameter("edit-action");
    _helpAction = getInitParameter("help-action");
    _viewAction = getInitParameter("view-action");

    _copyRequestParameters = GetterUtil.get(
      getInitParameter("copy-request-parameters"), true);
  }

  public void doEdit(RenderRequest req, RenderResponse res)
    throws IOException, PortletException {

    if (req.getPreferences() == null) {
      super.doEdit(req, res);
    }
    else {
      req.setAttribute(WebKeys.PORTLET_STRUTS_ACTION, _editAction);

      include(req, res);
    }
  }

  public void doHelp(RenderRequest req, RenderResponse res)
    throws IOException, PortletException {

    req.setAttribute(WebKeys.PORTLET_STRUTS_ACTION, _helpAction);

    include(req, res);
  }

  public void doView(RenderRequest req, RenderResponse res)
    throws IOException, PortletException {

    req.setAttribute(WebKeys.PORTLET_STRUTS_ACTION, _viewAction);

    include(req, res);
  }

  public void processAction(ActionRequest req, ActionResponse res)
    throws IOException, PortletException {

    String path = req.getParameter("struts_action");

    if (Validator.isNotNull(path)) {

      // Call processAction of com.liferay.portal.struts.PortletAction

      try {

        // Process action

        _getPortletRequestProcessor(req).process(req, res, path);
      }
      catch (ServletException se) {
        throw new PortletException(se);
      }
    }

    if (_copyRequestParameters) {
      PortalUtil.copyRequestParameters(req, res);
    }
  }

  protected void include(RenderRequest req, RenderResponse res)
    throws IOException, PortletException {

    // Call render of com.liferay.portal.struts.PortletAction

    Map strutsAttributes = null;

    if (_portletConfig.isWARFile()) {

      // Remove any Struts request attributes

      strutsAttributes = _removeStrutsAttributes(req);

      //req.setAttribute(
      //  WebKeys.PORTLET_STRUTS_ATTRIBUTES, strutsAttributes);
    }

    // Process render

    try {
      _getPortletRequestProcessor(req).process(req, res);
    }
    catch (IOException ioe) {
      throw ioe;
    }
    catch (ServletException se) {
      _log.error(se.getRootCause());

      throw new PortletException(se);
    }
    finally {
      if (_portletConfig.isWARFile()) {

        // Set the Struts request attributes

        _setStrutsAttributes(req, strutsAttributes);

        //req.removeAttribute(WebKeys.PORTLET_STRUTS_ATTRIBUTES);
      }
    }

    if (_copyRequestParameters) {
      PortalUtil.clearRequestParameters(req);
    }
  }

  private PortletRequestProcessor _getPortletRequestProcessor(
    PortletRequest req) {

    return (PortletRequestProcessor)getPortletContext().getAttribute(
      WebKeys.PORTLET_STRUTS_PROCESSOR);
  }

  private Map _removeStrutsAttributes(PortletRequest req) {
    Map strutsAttributes = new HashMap();

    Enumeration enu = req.getAttributeNames();

    while (enu.hasMoreElements()) {
      String attributeName = (String)enu.nextElement();

      if (attributeName.startsWith(_STRUTS_PACKAGE)) {
        strutsAttributes.put(
          attributeName, req.getAttribute(attributeName));
      }
    }

    Iterator itr = strutsAttributes.keySet().iterator();

    while (itr.hasNext()) {
      String attributeName = (String)itr.next();

      req.removeAttribute(attributeName);
        }

    ModuleConfig moduleConfig =
      (ModuleConfig)getPortletContext().getAttribute(Globals.MODULE_KEY);

    req.setAttribute(Globals.MODULE_KEY, moduleConfig);

    return strutsAttributes;
  }

  private void _setStrutsAttributes(
    PortletRequest req, Map strutsAttributes) {

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

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

      String key = (String)entry.getKey();
      Object value = entry.getValue();

      req.setAttribute(key, value);
    }
  }

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

  private static String _STRUTS_PACKAGE = "com.dotcms.repackage.org.apache.struts.";

  private PortletConfigImpl _portletConfig;
  private String _editAction;
  private String _helpAction;
  private String _viewAction;
  private boolean _copyRequestParameters;

}
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