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.util.bridges.wai;
24  
25  import com.liferay.portal.kernel.servlet.PortletServlet;
26  import com.liferay.portal.kernel.util.GetterUtil;
27  import com.liferay.portal.kernel.util.ParamUtil;
28  import com.liferay.portal.kernel.util.StringMaker;
29  import com.liferay.portal.kernel.util.StringPool;
30  import com.liferay.util.HttpUtil;
31  
32  import java.io.IOException;
33  
34  import java.util.HashMap;
35  import java.util.Map;
36  
37  import javax.portlet.ActionRequest;
38  import javax.portlet.ActionResponse;
39  import javax.portlet.GenericPortlet;
40  import javax.portlet.PortletConfig;
41  import javax.portlet.PortletException;
42  import javax.portlet.PortletURL;
43  import javax.portlet.RenderRequest;
44  import javax.portlet.RenderResponse;
45  import javax.portlet.WindowState;
46  
47  import javax.servlet.RequestDispatcher;
48  import javax.servlet.ServletException;
49  import javax.servlet.http.HttpServletRequest;
50  import javax.servlet.http.HttpServletResponse;
51  
52  import org.apache.commons.logging.Log;
53  import org.apache.commons.logging.LogFactory;
54  
55  /**
56   * <a href="WAIPortlet.java.html"><b><i>View Source</i></b></a>
57   *
58   * @author Jorge Ferrer
59   *
60   */
61  public class WAIPortlet extends GenericPortlet {
62  
63      public static final String CONNECTOR_IFRAME = "iframe";
64  
65      public static final String CONNECTOR_INCLUDE = "include";
66  
67      public void init(PortletConfig portletConfig) throws PortletException {
68          super.init(portletConfig);
69  
70          _connector = GetterUtil.getString(
71              portletConfig.getInitParameter("wai.connector"), CONNECTOR_IFRAME);
72      }
73  
74      public void processAction(ActionRequest req, ActionResponse res)
75          throws IOException, PortletException {
76      }
77  
78      public void render(RenderRequest req, RenderResponse res)
79          throws IOException, PortletException {
80  
81          if (req.getWindowState().equals(WindowState.MAXIMIZED)) {
82              invokeApplication(req, res);
83          }
84          else {
85              renderNormalWindowState(req, res);
86          }
87      }
88  
89      protected void forward(
90              HttpServletRequest req, HttpServletResponse res, String path)
91          throws PortletException {
92  
93          RequestDispatcher rd = req.getRequestDispatcher(path);
94  
95          try {
96              rd.forward(req, res);
97          }
98          catch (IOException ioe) {
99              _log.error(ioe, ioe);
100         }
101         catch (ServletException se) {
102             throw new PortletException(se);
103         }
104     }
105 
106     protected void invokeApplication(RenderRequest req, RenderResponse res)
107         throws IOException, PortletException {
108 
109         HttpServletRequest httpReq = (HttpServletRequest)req.getAttribute(
110             PortletServlet.PORTLET_SERVLET_REQUEST);
111         HttpServletResponse httpRes = (HttpServletResponse)req.getAttribute(
112             PortletServlet.PORTLET_SERVLET_RESPONSE);
113 
114         String portletName = getPortletConfig().getPortletName();
115 
116         String friendlyURL = (String)httpReq.getAttribute("FRIENDLY_URL");
117 
118         int pos = friendlyURL.indexOf(_MAPPING);
119 
120         StringMaker contextPath = new StringMaker();
121 
122         contextPath.append(friendlyURL.substring(0, pos + _MAPPING.length()));
123         contextPath.append(StringPool.SLASH);
124         contextPath.append(portletName);
125 
126         pos = friendlyURL.indexOf(portletName);
127 
128         String pathInfo = friendlyURL.substring(pos + portletName.length());
129 
130         Map params = new HashMap(httpReq.getParameterMap());
131 
132         params.remove(_APP_URL);
133 
134         String queryString = HttpUtil.parameterMapToString(params, false);
135 
136         String appUrl = ParamUtil.getString(req, _APP_URL, StringPool.SLASH);
137 
138         if (_connector.equals(CONNECTOR_IFRAME)) {
139             httpReq.setAttribute(_APP_URL, req.getContextPath() + appUrl);
140 
141             String iframeExtraHeight = GetterUtil.getString(
142                 getPortletConfig().getInitParameter(
143                     "wai.connector.iframe.height.extra"),
144                 "40");
145 
146             req.setAttribute(
147                 "wai.connector.iframe.height.extra", iframeExtraHeight);
148 
149             forward(httpReq, httpRes, _JSP_IFRAME);
150         }
151         else if (_connector.equals(CONNECTOR_INCLUDE)) {
152             HttpServletRequest waiHttpReq = new WAIHttpServletRequest(
153                 httpReq, contextPath.toString(), pathInfo, queryString, params);
154 
155             RequestDispatcher rd = httpReq.getRequestDispatcher(appUrl);
156 
157             try {
158                 rd.forward(waiHttpReq, httpRes);
159             }
160             catch (ServletException se) {
161                 throw new PortletException(se);
162             }
163         }
164     }
165 
166     protected void renderNormalWindowState(
167             RenderRequest req, RenderResponse res)
168         throws IOException, PortletException {
169 
170         HttpServletRequest httpReq = (HttpServletRequest)req.getAttribute(
171             PortletServlet.PORTLET_SERVLET_REQUEST);
172         HttpServletResponse httpRes = (HttpServletResponse)req.getAttribute(
173             PortletServlet.PORTLET_SERVLET_RESPONSE);
174 
175         PortletURL renderURL = res.createRenderURL();
176 
177         renderURL.setWindowState(WindowState.MAXIMIZED);
178 
179         req.setAttribute("renderURL", renderURL.toString());
180 
181         forward(httpReq, httpRes, _JSP_NORMAL_WINDOW_STATE);
182     }
183 
184     private static final String _MAPPING = "waiapp";
185 
186     private static final String _APP_URL = "appURL";
187 
188     private static final String _JSP_DIR = "/WEB-INF/jsp/liferay/wai";
189 
190     private static final String _JSP_IFRAME = _JSP_DIR + "/iframe.jsp";
191 
192     private static final String _JSP_NORMAL_WINDOW_STATE =
193         _JSP_DIR + "/normal_window_state.jsp";
194 
195     private static Log _log = LogFactory.getLog(WAIPortlet.class);
196 
197     private String _connector;
198 
199 }