1   /**
2    * Copyright (c) 2000-2007 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.portal.events;
24  
25  import com.liferay.portal.kernel.util.GetterUtil;
26  import com.liferay.portal.kernel.util.Randomizer;
27  import com.liferay.portal.model.Group;
28  import com.liferay.portal.model.Layout;
29  import com.liferay.portal.model.LayoutTypePortlet;
30  import com.liferay.portal.model.impl.GroupImpl;
31  import com.liferay.portal.service.GroupLocalServiceUtil;
32  import com.liferay.portal.service.LayoutLocalServiceUtil;
33  import com.liferay.portal.struts.Action;
34  import com.liferay.portal.struts.ActionException;
35  import com.liferay.portal.theme.ThemeDisplay;
36  import com.liferay.portal.util.PropsUtil;
37  import com.liferay.portal.util.WebKeys;
38  
39  import java.util.List;
40  
41  import javax.servlet.http.HttpServletRequest;
42  import javax.servlet.http.HttpServletResponse;
43  
44  import org.apache.commons.logging.Log;
45  import org.apache.commons.logging.LogFactory;
46  
47  /**
48   * <a href="RandomLayoutAction.java.html"><b><i>View Source</i></b></a>
49   *
50   * @author Brian Wing Shun Chan
51   *
52   */
53  public class RandomLayoutAction extends Action {
54  
55      public void run(HttpServletRequest req, HttpServletResponse res)
56          throws ActionException {
57  
58          try {
59  
60              // Disable caching for CSS and JavaScript
61  
62              PropsUtil.set(PropsUtil.LAST_MODIFIED_CHECK, "false");
63  
64              // Do not randomize layout unless the user is logged in
65  
66              ThemeDisplay themeDisplay =
67                  (ThemeDisplay)req.getAttribute(WebKeys.THEME_DISPLAY);
68  
69              if (!themeDisplay.isSignedIn()) {
70                  return;
71              }
72  
73              // Do not randomize layout unless the user is accessing the portal
74  
75              String requestURI = GetterUtil.getString(req.getRequestURI());
76  
77              if (!requestURI.endsWith("/portal/layout")) {
78                  return;
79              }
80  
81              // Do not randomize layout unless the user is accessing a personal
82              // layout
83  
84              Layout layout = themeDisplay.getLayout();
85  
86              if (layout == null) {
87                  return;
88              }
89  
90              Group generalGuestGroup = GroupLocalServiceUtil.getGroup(
91                  themeDisplay.getCompanyId(), GroupImpl.GUEST);
92  
93              List layouts = LayoutLocalServiceUtil.getLayouts(
94                  generalGuestGroup.getGroupId(), false);
95  
96              if (layouts.size() > 0) {
97                  Layout randomLayout = (Layout)layouts.get(
98                      Randomizer.getInstance().nextInt(layouts.size()));
99  
100                 themeDisplay.setLayout(randomLayout);
101                 themeDisplay.setLayoutTypePortlet(
102                     (LayoutTypePortlet)randomLayout.getLayoutType());
103 
104                 req.setAttribute(WebKeys.LAYOUT, randomLayout);
105             }
106         }
107         catch (Exception e) {
108             _log.error(e, e);
109 
110             throw new ActionException(e);
111         }
112     }
113 
114     private static Log _log = LogFactory.getLog(RandomLookAndFeelAction.class);
115 
116 }