1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.wiki.action;
24  
25  import com.liferay.portal.kernel.util.StringPool;
26  import com.liferay.portal.security.auth.PrincipalException;
27  import com.liferay.portal.security.permission.ActionKeys;
28  import com.liferay.portal.security.permission.PermissionChecker;
29  import com.liferay.portal.struts.PortletAction;
30  import com.liferay.portal.theme.ThemeDisplay;
31  import com.liferay.portal.util.PropsUtil;
32  import com.liferay.portal.util.WebKeys;
33  import com.liferay.portlet.wiki.NoSuchNodeException;
34  import com.liferay.portlet.wiki.NoSuchPageException;
35  import com.liferay.portlet.wiki.model.WikiNode;
36  import com.liferay.portlet.wiki.service.WikiNodeLocalServiceUtil;
37  import com.liferay.portlet.wiki.service.permission.WikiNodePermission;
38  import com.liferay.util.servlet.SessionErrors;
39  
40  import java.util.List;
41  
42  import javax.portlet.PortletConfig;
43  import javax.portlet.RenderRequest;
44  import javax.portlet.RenderResponse;
45  
46  import org.apache.struts.action.ActionForm;
47  import org.apache.struts.action.ActionForward;
48  import org.apache.struts.action.ActionMapping;
49  
50  /**
51   * <a href="ViewPageAction.java.html"><b><i>View Source</i></b></a>
52   *
53   * @author Brian Wing Shun Chan
54   * @author Jorge Ferrer
55   *
56   */
57  public class ViewPageAction extends PortletAction {
58  
59      public ActionForward render(
60              ActionMapping mapping, ActionForm form, PortletConfig config,
61              RenderRequest req, RenderResponse res)
62          throws Exception {
63  
64          try {
65              getNode(req);
66              ActionUtil.getPage(req);
67          }
68          catch (Exception e) {
69              if (e instanceof NoSuchNodeException ||
70                  e instanceof NoSuchPageException ||
71                  e instanceof PrincipalException) {
72  
73                  SessionErrors.add(req, e.getClass().getName());
74  
75                  return mapping.findForward("portlet.wiki.error");
76              }
77              else {
78                  throw e;
79              }
80          }
81  
82          return mapping.findForward(getForward(req, "portlet.wiki.view_page"));
83      }
84  
85      protected void getNode(RenderRequest req) throws Exception {
86          ActionUtil.getNode(req);
87  
88          WikiNode node = (WikiNode)req.getAttribute(WebKeys.WIKI_NODE);
89  
90          if (node != null) {
91              return;
92          }
93  
94          ThemeDisplay themeDisplay =
95              (ThemeDisplay)req.getAttribute(WebKeys.THEME_DISPLAY);
96  
97          List<WikiNode> nodes = WikiNodeLocalServiceUtil.getNodes(
98              themeDisplay.getLayout().getGroupId());
99  
100         if (nodes.size() == 0) {
101             String nodeName = PropsUtil.get(PropsUtil.WIKI_INITIAL_NODE_NAME);
102 
103             node = WikiNodeLocalServiceUtil.addNode(
104                 themeDisplay.getUserId(), themeDisplay.getPlid(), nodeName,
105                 StringPool.BLANK, true, true);
106         }
107         else {
108             PermissionChecker permissionChecker =
109                 themeDisplay.getPermissionChecker();
110 
111             for (WikiNode curNode : nodes) {
112                 if (WikiNodePermission.contains(
113                         permissionChecker, curNode.getNodeId(),
114                         ActionKeys.VIEW)) {
115 
116                     node = curNode;
117 
118                     break;
119                 }
120             }
121 
122             if (node == null) {
123                 throw new PrincipalException();
124             }
125         }
126 
127         req.setAttribute(WebKeys.WIKI_NODE, node);
128     }
129 
130     protected boolean isCheckMethodOnProcessAction() {
131         return false;
132     }
133 
134 }