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

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