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

   1 /*
   2  * Copyright 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client;
  20
  21 import java.util.List;
  22
  23 import gr.ebs.gss.client.rest.RestCommand;
  24
  25 import com.google.gwt.gears.client.desktop.File;
  26 import com.google.gwt.gears.client.httprequest.HttpRequest;
  27 import com.google.gwt.gears.client.httprequest.ProgressEvent;
  28 import com.google.gwt.gears.client.httprequest.ProgressHandler;
  29 import com.google.gwt.gears.client.httprequest.RequestCallback;
  30
  31 /**
  32  * The 'File upload' dialog box implementation with Google Gears support
  33  * for IE.
  34  */
  35 public class FileUploadGearsIEDialog extends FileUploadGearsDialog implements Updateable {
  36
  37         /**
  38          * Perform the HTTP request to upload the specified file.
  39          */
  40         @Override
  41         protected void doSend(final List<File> filesRemaining) {
  42                 final GSS app = GSS.get();
  43                 HttpRequest request = factory.createHttpRequest();
  44                 requests.add(request);
  45                 String method = "POST";
  46
  47                 String path;
  48                 final String filename = getFilename(filesRemaining.get(0).getName());
  49                 path = folder.getUri();
  50                 if (!path.endsWith("/"))
  51                         path = path + "/";
  52                 path = path + encode(filename);
  53
  54                 String token = app.getToken();
  55                 String resource = path.substring(app.getApiPath().length()-1, path.length());
  56                 String date = RestCommand.getDate();
  57                 String sig = RestCommand.calculateSig(method, date, resource, RestCommand.base64decode(token));
  58                 request.open(method, path);
  59                 request.setRequestHeader("X-GSS-Date", date);
  60                 request.setRequestHeader("Authorization", app.getCurrentUserResource().getUsername() + " " + sig);
  61                 request.setRequestHeader("Accept", "application/json; charset=utf-8");
  62                 request.setCallback(new RequestCallback() {
  63                         @Override
  64                         public void onResponseReceived(HttpRequest req) {
  65                                 // XXX: No error checking, since IE throws an Internal Error
  66                                 // when accessing req.getStatus().
  67                                 filesRemaining.remove(0);
  68                                 if(filesRemaining.isEmpty()){
  69                                         finish();
  70                                 }
  71                                 doSend(filesRemaining);
  72                         }
  73                 });
  74                 request.getUpload().setProgressHandler(new ProgressHandler() {
  75                         @Override
  76                         public void onProgress(ProgressEvent event) {
  77                                 double pcnt = (double) event.getLoaded() / event.getTotal();
  78                                 progressBars.get(0).setProgress((int) Math.floor(pcnt * 100));
  79                                 if(pcnt*100 == 100)
  80                                         progressBars.remove(0);
  81                         }
  82                 });
  83                 request.send(filesRemaining.get(0).getBlob());
  84         }
  85
  86 }