code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/FileUploadGearsIEDialog.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import java.util.List;
  38
  39 import gr.grnet.pithos.web.client.rest.RestCommand;
  40
  41 import com.google.gwt.gears.client.desktop.File;
  42 import com.google.gwt.gears.client.httprequest.HttpRequest;
  43 import com.google.gwt.gears.client.httprequest.ProgressEvent;
  44 import com.google.gwt.gears.client.httprequest.ProgressHandler;
  45 import com.google.gwt.gears.client.httprequest.RequestCallback;
  46
  47 /**
  48  * The 'File upload' dialog box implementation with Google Gears support
  49  * for IE.
  50  */
  51 public class FileUploadGearsIEDialog extends FileUploadGearsDialog {
  52
  53         /**
  54          * Perform the HTTP request to upload the specified file.
  55          */
  56         @Override
  57         protected void doSend(final List<File> filesRemaining) {
  58                 HttpRequest request = factory.createHttpRequest();
  59                 requests.add(request);
  60                 String method = "POST";
  61
  62                 String path;
  63                 final String filename = getFilename(filesRemaining.get(0).getName());
  64                 path = folder.getUri();
  65                 if (!path.endsWith("/"))
  66                         path = path + "/";
  67                 path = path + encode(filename);
  68
  69                 String token = app.getToken();
  70                 String resource = path.substring(app.getApiPath().length()-1, path.length());
  71                 String date = RestCommand.getDate();
  72                 String sig = RestCommand.calculateSig(method, date, resource, RestCommand.base64decode(token));
  73                 request.open(method, path);
  74                 request.setRequestHeader("Authorization", app.getCurrentUserResource().getUsername() + " " + sig);
  75                 request.setRequestHeader("Accept", "application/json; charset=utf-8");
  76                 request.setCallback(new RequestCallback() {
  77                         @Override
  78                         public void onResponseReceived(HttpRequest req) {
  79                                 // XXX: No error checking, since IE throws an Internal Error
  80                                 // when accessing req.getStatus().
  81                                 filesRemaining.remove(0);
  82                                 if(filesRemaining.isEmpty()){
  83                                         finish();
  84                                 }
  85                                 doSend(filesRemaining);
  86                         }
  87                 });
  88                 request.getUpload().setProgressHandler(new ProgressHandler() {
  89                         @Override
  90                         public void onProgress(ProgressEvent event) {
  91                                 double pcnt = (double) event.getLoaded() / event.getTotal();
  92                                 progressBars.get(0).setProgress((int) Math.floor(pcnt * 100));
  93                                 if(pcnt*100 == 100)
  94                                         progressBars.remove(0);
  95                         }
  96                 });
  97                 request.send(filesRemaining.get(0).getBlob());
  98         }
  99
 100 }