001    /**
002     * Copyright (c) 2000-2013 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.Constants;
019    import com.liferay.portal.kernel.util.ParamUtil;
020    import com.liferay.portal.kernel.util.StringPool;
021    import com.liferay.portal.security.auth.PrincipalException;
022    import com.liferay.portal.service.ServiceContext;
023    import com.liferay.portal.service.ServiceContextFactory;
024    import com.liferay.portal.struts.PortletAction;
025    import com.liferay.portlet.wiki.DuplicateNodeNameException;
026    import com.liferay.portlet.wiki.NoSuchNodeException;
027    import com.liferay.portlet.wiki.NodeNameException;
028    import com.liferay.portlet.wiki.model.WikiNode;
029    import com.liferay.portlet.wiki.service.WikiNodeServiceUtil;
030    import com.liferay.portlet.wiki.util.WikiCacheThreadLocal;
031    import com.liferay.portlet.wiki.util.WikiCacheUtil;
032    
033    import javax.portlet.ActionRequest;
034    import javax.portlet.ActionResponse;
035    import javax.portlet.PortletConfig;
036    import javax.portlet.PortletPreferences;
037    import javax.portlet.RenderRequest;
038    import javax.portlet.RenderResponse;
039    
040    import org.apache.struts.action.ActionForm;
041    import org.apache.struts.action.ActionForward;
042    import org.apache.struts.action.ActionMapping;
043    
044    /**
045     * @author Brian Wing Shun Chan
046     */
047    public class EditNodeAction extends PortletAction {
048    
049            @Override
050            public void processAction(
051                            ActionMapping actionMapping, ActionForm actionForm,
052                            PortletConfig portletConfig, ActionRequest actionRequest,
053                            ActionResponse actionResponse)
054                    throws Exception {
055    
056                    String cmd = ParamUtil.getString(actionRequest, Constants.CMD);
057    
058                    try {
059                            if (cmd.equals(Constants.ADD) || cmd.equals(Constants.UPDATE)) {
060                                    updateNode(actionRequest);
061                            }
062                            else if (cmd.equals(Constants.DELETE)) {
063                                    deleteNode(actionRequest);
064                            }
065                            else if (cmd.equals(Constants.SUBSCRIBE)) {
066                                    subscribeNode(actionRequest);
067                            }
068                            else if (cmd.equals(Constants.UNSUBSCRIBE)) {
069                                    unsubscribeNode(actionRequest);
070                            }
071    
072                            sendRedirect(actionRequest, actionResponse);
073                    }
074                    catch (Exception e) {
075                            if (e instanceof NoSuchNodeException ||
076                                    e instanceof PrincipalException) {
077    
078                                    SessionErrors.add(actionRequest, e.getClass());
079    
080                                    setForward(actionRequest, "portlet.wiki.error");
081                            }
082                            else if (e instanceof DuplicateNodeNameException ||
083                                             e instanceof NodeNameException) {
084    
085                                    SessionErrors.add(actionRequest, e.getClass());
086                            }
087                            else {
088                                    throw e;
089                            }
090                    }
091            }
092    
093            @Override
094            public ActionForward render(
095                            ActionMapping actionMapping, ActionForm actionForm,
096                            PortletConfig portletConfig, RenderRequest renderRequest,
097                            RenderResponse renderResponse)
098                    throws Exception {
099    
100                    try {
101                            long nodeId = ParamUtil.getLong(renderRequest, "nodeId");
102    
103                            if (nodeId > 0) {
104                                    ActionUtil.getNode(renderRequest);
105                            }
106                    }
107                    catch (Exception e) {
108                            if (e instanceof NoSuchNodeException ||
109                                    e instanceof PrincipalException) {
110    
111                                    SessionErrors.add(renderRequest, e.getClass());
112    
113                                    return actionMapping.findForward("portlet.wiki.error");
114                            }
115                            else {
116                                    throw e;
117                            }
118                    }
119    
120                    return actionMapping.findForward(
121                            getForward(renderRequest, "portlet.wiki.edit_node"));
122            }
123    
124            protected void deleteNode(ActionRequest actionRequest) throws Exception {
125                    long nodeId = ParamUtil.getLong(actionRequest, "nodeId");
126    
127                    String oldName = getNodeName(nodeId);
128    
129                    WikiCacheThreadLocal.setClearCache(false);
130    
131                    WikiNodeServiceUtil.deleteNode(nodeId);
132    
133                    WikiCacheUtil.clearCache(nodeId);
134    
135                    WikiCacheThreadLocal.setClearCache(true);
136    
137                    updatePreferences(actionRequest, oldName, StringPool.BLANK);
138            }
139    
140            protected String getNodeName(long nodeId) throws Exception {
141                    WikiNode node = WikiNodeServiceUtil.getNode(nodeId);
142    
143                    return node.getName();
144            }
145    
146            protected void subscribeNode(ActionRequest actionRequest) throws Exception {
147                    long nodeId = ParamUtil.getLong(actionRequest, "nodeId");
148    
149                    WikiNodeServiceUtil.subscribeNode(nodeId);
150            }
151    
152            protected void unsubscribeNode(ActionRequest actionRequest)
153                    throws Exception {
154    
155                    long nodeId = ParamUtil.getLong(actionRequest, "nodeId");
156    
157                    WikiNodeServiceUtil.unsubscribeNode(nodeId);
158            }
159    
160            protected void updateNode(ActionRequest actionRequest) throws Exception {
161                    long nodeId = ParamUtil.getLong(actionRequest, "nodeId");
162    
163                    String name = ParamUtil.getString(actionRequest, "name");
164                    String description = ParamUtil.getString(actionRequest, "description");
165    
166                    ServiceContext serviceContext = ServiceContextFactory.getInstance(
167                            WikiNode.class.getName(), actionRequest);
168    
169                    if (nodeId <= 0) {
170    
171                            // Add node
172    
173                            WikiNodeServiceUtil.addNode(name, description, serviceContext);
174                    }
175                    else {
176    
177                            // Update node
178    
179                            String oldName = getNodeName(nodeId);
180    
181                            WikiNodeServiceUtil.updateNode(
182                                    nodeId, name, description, serviceContext);
183    
184                            updatePreferences(actionRequest, oldName, name);
185                    }
186            }
187    
188            protected void updatePreferences(
189                            ActionRequest actionRequest, String oldName, String newName)
190                    throws Exception {
191    
192                    PortletPreferences preferences = actionRequest.getPreferences();
193    
194                    String hiddenNodes = preferences.getValue(
195                            "hiddenNodes", StringPool.BLANK);
196                    String visibleNodes = preferences.getValue(
197                            "visibleNodes", StringPool.BLANK);
198    
199                    String regex = oldName + ",?";
200    
201                    preferences.setValue(
202                            "hiddenNodes", hiddenNodes.replaceFirst(regex, newName));
203                    preferences.setValue(
204                            "visibleNodes",
205                            visibleNodes.replaceFirst(regex, newName));
206    
207                    preferences.store();
208            }
209    
210    }