FileUploadHandler


1   /*
2    * Copyright (C) 2003  Diez B. Roggisch [deets@web.de]
3    *
4    * This library is free software; you can redistribute it and/or
5    * modify it under the terms of the GNU Lesser General Public
6    * License as published by the Free Software Foundation; either
7    * version 2.1 of the License, or (at your option) any later version.
8    *
9    * This library is distributed in the hope that it will be useful,
10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   * Lesser General Public License for more details.
13   *
14   * You should have received a copy of the GNU Lesser General Public
15   * License along with this library; if not, write to the Free Software
16   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17   *
18   * $Id: FileUploadHandler.java,v 1.3 2004/02/01 05:16:27 christianc Exp $
19   */
20  package org.enhydra.barracuda.contrib.dbroggisch.examples.controller.handlers;
21  
22  import java.io.IOException  ;
23  import java.util.ArrayList  ;
24  import java.util.List  ;
25  import java.util.Enumeration  ;
26  import javax.servlet.ServletException  ;
27  import javax.servlet.http.HttpServletRequest  ;
28  import org.enhydra.barracuda.core.event.ControlEventContext;
29  import org.enhydra.barracuda.core.event.EventException;
30  import org.enhydra.barracuda.core.helper.servlet.DefaultServletRequestWrapper;
31  import org.enhydra.barracuda.contrib.dbroggisch.page.Page;
32  import org.enhydra.barracuda.contrib.dbroggisch.page.PageEventListener;
33  
34  import org.enhydra.barracuda.contrib.dbroggisch.examples.controller.DBRApplicationGateway;
35  import org.enhydra.barracuda.contrib.dbroggisch.examples.controller.servlets.MyMultipartRequest;
36  import org.enhydra.barracuda.contrib.dbroggisch.examples.view.pages.*;
37  
38  
39  public class FileUploadHandler extends PageEventListener {
40  
41      public void handleControlEvent(ControlEventContext context, Page p)
42              throws EventException, ServletException  , IOException   {
43          HttpServletRequest   request = context.getRequest();
44          List   realNames = new ArrayList  ();
45          FileUploadPage fuPage = (FileUploadPage)p;
46          fuPage.setState(ExampleBasePage.FILEUPLOAD);
47  
48          if (DBRApplicationGateway.WRAPPER_INSTALLED &&
49              ((DefaultServletRequestWrapper)request).getCoreRequest() instanceof MyMultipartRequest) {
50              MyMultipartRequest mReq = (MyMultipartRequest)((DefaultServletRequestWrapper)request).getCoreRequest();
51              Enumeration   fnames = mReq.getFileNames();
52  
53              while(fnames.hasMoreElements()) {
54                  realNames.add(mReq.getFilesystemName((String  )fnames.nextElement()));
55              }
56          }
57          fuPage.setNames(realNames);
58          context.getEvent().setHandled(true);
59      }
60  
61  }
62
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