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

   1 /*
   2  * Copyright 2008, 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.commands;
  20
  21 import gr.ebs.gss.client.FileUploadDialog;
  22 import gr.ebs.gss.client.GSS;
  23 import gr.ebs.gss.client.rest.GetCommand;
  24 import gr.ebs.gss.client.rest.resource.FileResource;
  25 import gr.ebs.gss.client.rest.resource.FolderResource;
  26
  27 import java.util.ArrayList;
  28 import java.util.List;
  29
  30 import com.google.gwt.core.client.GWT;
  31 import com.google.gwt.user.client.Command;
  32 import com.google.gwt.user.client.DeferredCommand;
  33 import com.google.gwt.user.client.IncrementalCommand;
  34 import com.google.gwt.user.client.ui.PopupPanel;
  35 import com.google.gwt.user.client.ui.TreeItem;
  36
  37 /**
  38  * Upload a file command
  39  *
  40  * @author kman
  41  */
  42 public class UploadFileCommand implements Command {
  43
  44         private PopupPanel containerPanel;
  45         private List<FileResource> files;
  46
  47         public UploadFileCommand(PopupPanel _containerPanel) {
  48                 containerPanel = _containerPanel;
  49         }
  50
  51         @Override
  52         public void execute() {
  53                 containerPanel.hide();
  54                 displayNewFile();
  55         }
  56
  57         /**
  58          * Display the 'new file' dialog for uploading a new file to the system.
  59          */
  60         private void displayNewFile() {
  61                 TreeItem currentFolder = GSS.get().getFolders().getCurrent();
  62                 if (currentFolder == null) {
  63                         GSS.get().displayError("You have to select the parent folder first");
  64                         return;
  65                 }
  66                 getFileList();
  67                 DeferredCommand.addCommand(new IncrementalCommand() {
  68
  69                         @Override
  70                         public boolean execute() {
  71                                 boolean res = canContinue();
  72                                 if (res) {
  73                                         FileUploadDialog dlg = GWT.create(FileUploadDialog.class);
  74                                         dlg.setFiles(files);
  75                                         dlg.center();
  76                                         return false;
  77                                 }
  78                                 return true;
  79                         }
  80
  81                 });
  82         }
  83
  84         private boolean canContinue() {
  85                 if (files != null )
  86                         return true;
  87                 return false;
  88         }
  89
  90         private void getFileList() {
  91                 GetCommand<FolderResource> eg = new GetCommand<FolderResource>(FolderResource.class,((FolderResource)GSS.get().getFolders().getCurrent().getUserObject()).getUri(), null){
  92
  93                         @Override
  94                         public void onComplete() {
  95                                 files = getResult().getFiles();
  96                         }
  97
  98                         @Override
  99                         public void onError(Throwable t) {
 100                                 files = new ArrayList<FileResource>();
 101                         }
 102
 103                 };
 104                 DeferredCommand.addCommand(eg);
 105         }
 106
 107 }