001    /**
002     * Copyright (c) 2000-present 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.wikidisplay.action;
016    
017    import com.liferay.portal.kernel.servlet.SessionErrors;
018    import com.liferay.portal.kernel.util.GetterUtil;
019    import com.liferay.portal.kernel.util.ParamUtil;
020    import com.liferay.portal.kernel.util.StringPool;
021    import com.liferay.portal.kernel.util.Validator;
022    import com.liferay.portal.security.auth.PrincipalException;
023    import com.liferay.portal.struts.PortletAction;
024    import com.liferay.portal.theme.ThemeDisplay;
025    import com.liferay.portal.util.WebKeys;
026    import com.liferay.portlet.wiki.NoSuchNodeException;
027    import com.liferay.portlet.wiki.NoSuchPageException;
028    import com.liferay.portlet.wiki.model.WikiNode;
029    import com.liferay.portlet.wiki.model.WikiPage;
030    import com.liferay.portlet.wiki.model.WikiPageConstants;
031    import com.liferay.portlet.wiki.service.WikiNodeServiceUtil;
032    import com.liferay.portlet.wiki.service.WikiPageServiceUtil;
033    
034    import javax.portlet.PortletConfig;
035    import javax.portlet.PortletPreferences;
036    import javax.portlet.RenderRequest;
037    import javax.portlet.RenderResponse;
038    
039    import org.apache.struts.action.ActionForm;
040    import org.apache.struts.action.ActionForward;
041    import org.apache.struts.action.ActionMapping;
042    
043    /**
044     * @author Brian Wing Shun Chan
045     */
046    public class ViewAction extends PortletAction {
047    
048            @Override
049            public ActionForward render(
050                            ActionMapping actionMapping, ActionForm actionForm,
051                            PortletConfig portletConfig, RenderRequest renderRequest,
052                            RenderResponse renderResponse)
053                    throws Exception {
054    
055                    try {
056                            PortletPreferences portletPreferences =
057                                    renderRequest.getPreferences();
058    
059                            ThemeDisplay themeDisplay =
060                                    (ThemeDisplay)renderRequest.getAttribute(WebKeys.THEME_DISPLAY);
061    
062                            String title = ParamUtil.getString(
063                                    renderRequest, "title",
064                                    portletPreferences.getValue(
065                                            "title", WikiPageConstants.FRONT_PAGE));
066                            double version = ParamUtil.getDouble(renderRequest, "version");
067    
068                            WikiNode node = getNode(renderRequest);
069    
070                            if (node.getGroupId() != themeDisplay.getScopeGroupId()) {
071                                    throw new NoSuchNodeException(
072                                            "{nodeId=" + node.getNodeId() + "}");
073                            }
074    
075                            WikiPage page = WikiPageServiceUtil.fetchPage(
076                                    node.getNodeId(), title, version);
077    
078                            if ((page == null) || page.isInTrash()) {
079                                    page = WikiPageServiceUtil.getPage(
080                                            node.getNodeId(), WikiPageConstants.FRONT_PAGE);
081                            }
082    
083                            renderRequest.setAttribute(WebKeys.WIKI_NODE, node);
084                            renderRequest.setAttribute(WebKeys.WIKI_PAGE, page);
085    
086                            return actionMapping.findForward("portlet.wiki_display.view");
087                    }
088                    catch (NoSuchNodeException nsne) {
089                            return actionMapping.findForward("/portal/portlet_not_setup");
090                    }
091                    catch (NoSuchPageException nspe) {
092                            return actionMapping.findForward("/portal/portlet_not_setup");
093                    }
094                    catch (PrincipalException pe) {
095                            SessionErrors.add(renderRequest, pe.getClass());
096    
097                            return actionMapping.findForward("portlet.wiki_display.error");
098                    }
099            }
100    
101            protected WikiNode getNode(RenderRequest renderRequest) throws Exception {
102                    PortletPreferences portletPreferences = renderRequest.getPreferences();
103    
104                    ThemeDisplay themeDisplay = (ThemeDisplay)renderRequest.getAttribute(
105                            WebKeys.THEME_DISPLAY);
106    
107                    String nodeName = ParamUtil.getString(renderRequest, "nodeName");
108    
109                    if (Validator.isNotNull(nodeName)) {
110                            return WikiNodeServiceUtil.getNode(
111                                    themeDisplay.getScopeGroupId(), nodeName);
112                    }
113                    else {
114                            long nodeId = GetterUtil.getLong(
115                                    portletPreferences.getValue("nodeId", StringPool.BLANK));
116    
117                            return WikiNodeServiceUtil.getNode(nodeId);
118                    }
119            }
120    
121    }