1 /**
2 * Copyright (C) 2005-2009 Alfresco Software Limited.
3 *
4 * This file is part of the Spring Surf Extension project.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.springframework.extensions.surf.mvc;
20
21 import java.io.IOException;
22 import java.util.StringTokenizer;
23
24 import javax.servlet.http.HttpServletRequest;
25 import javax.servlet.http.HttpServletResponse;
26
27 import org.apache.commons.logging.Log;
28 import org.apache.commons.logging.LogFactory;
29 import org.springframework.extensions.surf.FrameworkUtil;
30 import org.springframework.extensions.surf.ThreadLocalPreviewContext;
31 import org.springframework.extensions.surf.WebFrameworkConstants;
32 import org.springframework.web.servlet.ModelAndView;
33
34 /**
35 * Controller for managing requests for preview.
36 *
37 * This allows the previewed sandbox and webapp to be specified via a
38 * URL for the current session. It then performs a redirect to the
39 * Surf application.
40 *
41 * Incoming URLs can be of the form:
42 *
43 * /preview/{sandboxId}
44 * /preview/{sandboxId}/{webappId}
45 * /preview?alfStoreId={sandboxId}
46 * /preview?alfStoreId={sandboxId}&alfWebappId={webappId}
47 * /preview?s={sandboxId}
48 * /preview?s={sandboxId}&w={webappId}
49 *
50 * @author muzquiano
51 */
52 public class PreviewController extends AbstractWebFrameworkController
53 {
54 private static Log logger = LogFactory.getLog(PreviewController.class);
55
56 /* (non-Javadoc)
57 * @see org.alfresco.web.framework.mvc.AbstractWebFrameworkController#getLogger()
58 */
59 public Log getLogger()
60 {
61 return logger;
62 }
63
64 /* (non-Javadoc)
65 * @see org.alfresco.web.framework.mvc.AbstractWebFrameworkController#createModelAndView(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
66 */
67 public ModelAndView createModelAndView(HttpServletRequest request, HttpServletResponse response)
68 {
69 // This servlet will only operate if the Web Framework instance
70 // is in preview mode
71 if (this.getWebFrameworkConfiguration().isPreviewEnabled())
72 {
73 boolean updated = false;
74
75 // values we want to determine
76 String storeId = null;
77 String webappId = null;
78
79 // try to determine values by parsing tokens
80 String uri = request.getRequestURI();
81
82 // skip server context path and build the path to the resource we are looking for
83 uri = uri.substring(request.getContextPath().length());
84
85 // validate and return the resource path - stripping the servlet context
86 StringTokenizer t = new StringTokenizer(uri, "/");
87 String servletName = t.nextToken();
88 if (t.hasMoreTokens())
89 {
90 storeId = t.nextToken();
91 }
92 if (t.hasMoreTokens())
93 {
94 webappId = t.nextToken();
95 }
96
97
98 // try to determine values by looking at request parameters
99 String _storeId = (String) request.getParameter(WebFrameworkConstants.STORE_ID_REQUEST_PARAM_NAME);
100 if (_storeId == null)
101 {
102 _storeId = (String) request.getParameter("s");
103 }
104 if (_storeId != null)
105 {
106 storeId = _storeId;
107 }
108 String _webappId = (String) request.getParameter(WebFrameworkConstants.WEBAPP_ID_REQUEST_PARAM_NAME);
109 if (_webappId == null)
110 {
111 _webappId = (String) request.getParameter("w");
112 }
113 if (_webappId != null)
114 {
115 webappId = _webappId;
116 }
117
118 // set values onto session
119 if (storeId != null)
120 {
121 updated = true;
122 request.getSession(true).setAttribute(WebFrameworkConstants.STORE_ID_SESSION_ATTRIBUTE_NAME, storeId);
123 }
124 if (storeId != null && webappId != null)
125 {
126 updated = true;
127 request.getSession(true).setAttribute(WebFrameworkConstants.WEBAPP_ID_SESSION_ATTRIBUTE_NAME, webappId);
128 }
129
130
131 // if updated, then lets do a full refresh
132 if (updated)
133 {
134 // set onto thread local
135 ThreadLocalPreviewContext sandboxContext = new ThreadLocalPreviewContext(storeId, webappId);
136
137 // refresh the web scripts
138 FrameworkUtil.resetWebScripts();
139
140 /*
141 ApplicationContext appContext = FrameworkHelper.getApplicationContext();
142 if (appContext instanceof ConfigurableApplicationContext)
143 {
144 ((ConfigurableApplicationContext) appContext).refresh();
145 }
146 */
147
148 // TODO: reinstate this?
149 // refresh web flow
150 //FrameworkUtil.resetWebFlow();
151 }
152
153 // send redirect
154 try {
155 response.sendRedirect(request.getContextPath());
156 }
157 catch (IOException ioe){ }
158 }
159
160 return null;
161 }
162 }