001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.wiki.action;
016    
017    import com.liferay.portal.kernel.servlet.SessionErrors;
018    import com.liferay.portal.kernel.util.ParamUtil;
019    import com.liferay.portal.kernel.util.Validator;
020    import com.liferay.portal.security.auth.PrincipalException;
021    import com.liferay.portal.struts.PortletAction;
022    import com.liferay.portal.util.WebKeys;
023    import com.liferay.portlet.wiki.NoSuchNodeException;
024    import com.liferay.portlet.wiki.NoSuchPageException;
025    import com.liferay.portlet.wiki.model.WikiNode;
026    
027    import javax.portlet.PortletConfig;
028    import javax.portlet.RenderRequest;
029    import javax.portlet.RenderResponse;
030    
031    import org.apache.struts.action.ActionForm;
032    import org.apache.struts.action.ActionForward;
033    import org.apache.struts.action.ActionMapping;
034    
035    /**
036     * @author Brian Wing Shun Chan
037     * @author Jorge Ferrer
038     */
039    public class ViewPageAction extends PortletAction {
040    
041            public ActionForward render(
042                            ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
043                            RenderRequest renderRequest, RenderResponse renderResponse)
044                    throws Exception {
045    
046                    long categoryId = ParamUtil.getLong(renderRequest, "categoryId");
047                    String title = ParamUtil.getString(renderRequest, "title");
048    
049                    if ((categoryId > 0) || Validator.isNull(title)) {
050                            if (categoryId > 0) {
051                                    return ViewNodeAction.viewNode(
052                                            mapping, renderRequest,
053                                            "portlet.wiki.view_categorized_pages");
054                            }
055    
056                            String tag = ParamUtil.getString(renderRequest, "tag");
057    
058                            if (Validator.isNotNull(tag)) {
059                                    return ViewNodeAction.viewNode(
060                                            mapping, renderRequest, "portlet.wiki.view_tagged_pages");
061                            }
062                    }
063    
064                    try {
065                            ActionUtil.getNode(renderRequest);
066                            ActionUtil.getPage(renderRequest);
067                    }
068                    catch (Exception e) {
069                            if (e instanceof NoSuchNodeException ||
070                                    e instanceof NoSuchPageException ||
071                                    e instanceof PrincipalException) {
072    
073                                    SessionErrors.add(renderRequest, e.getClass().getName());
074    
075                                    return mapping.findForward("portlet.wiki.error");
076                            }
077                            else {
078                                    throw e;
079                            }
080                    }
081    
082                    return mapping.findForward(
083                            getForward(renderRequest, "portlet.wiki.view_page"));
084            }
085    
086            protected void getNode(RenderRequest renderRequest) throws Exception {
087                    ActionUtil.getNode(renderRequest);
088    
089                    WikiNode node = (WikiNode)renderRequest.getAttribute(WebKeys.WIKI_NODE);
090    
091                    if (node != null) {
092                            return;
093                    }
094    
095                    ActionUtil.getFirstVisibleNode(renderRequest);
096            }
097    
098            protected boolean isCheckMethodOnProcessAction() {
099                    return false;
100            }
101    
102    }