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.taglib.util;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.log.LogUtil;
28  import com.liferay.portal.kernel.servlet.StringServletResponse;
29  import com.liferay.portal.kernel.util.Validator;
30  import com.liferay.portal.model.Theme;
31  import com.liferay.portal.util.WebKeys;
32  
33  import javax.servlet.RequestDispatcher;
34  import javax.servlet.ServletContext;
35  import javax.servlet.http.HttpServletRequest;
36  import javax.servlet.jsp.JspException;
37  
38  /**
39   * <a href="IncludeTag.java.html"><b><i>View Source</i></b></a>
40   *
41   * @author Brian Wing Shun Chan
42   *
43   */
44  public class IncludeTag extends ParamAncestorTagImpl {
45  
46      public int doEndTag() throws JspException {
47          HttpServletRequest req = null;
48  
49          try {
50              ServletContext ctx = getServletContext();
51              req = getServletRequest();
52              StringServletResponse res = getServletResponse();
53  
54              Theme theme = (Theme)req.getAttribute(WebKeys.THEME);
55  
56              String page = getPage();
57  
58              if (isTheme()) {
59                  ThemeUtil.include(ctx, req, res, pageContext, page, theme);
60              }
61              else {
62                  RequestDispatcher rd = ctx.getRequestDispatcher(page);
63  
64                  rd.include(req, res);
65              }
66  
67              pageContext.getOut().print(res.getString());
68  
69              return EVAL_PAGE;
70          }
71          catch (Exception e) {
72              if (req != null) {
73                  String currentURL = (String)req.getAttribute(
74                      WebKeys.CURRENT_URL);
75  
76                  _log.error(
77                      "Current URL " + currentURL + " generates exception: " +
78                          e.getMessage());
79              }
80  
81              LogUtil.log(_log, e);
82  
83              return EVAL_PAGE;
84          }
85          finally {
86              clearParams();
87          }
88      }
89  
90      public boolean isTheme() {
91          return false;
92      }
93  
94      public String getPage() {
95          if (Validator.isNull(_page)) {
96              return getDefaultPage();
97          }
98          else {
99              return _page;
100         }
101     }
102 
103     public void setPage(String page) {
104         _page = page;
105     }
106 
107     protected String getDefaultPage() {
108         return null;
109     }
110 
111     private static Log _log = LogFactoryUtil.getLog(IncludeTag.class);
112 
113     private String _page;
114 
115 }