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

   1 /*\r
   2  * Copyright 2007, 2008, 2009, 2010 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.PostCommand;\r
  22 import gr.ebs.gss.client.rest.RestException;\r
  23 import gr.ebs.gss.client.rest.resource.FileResource;\r
  24 import gr.ebs.gss.client.rest.resource.GroupResource;\r
  25 import gr.ebs.gss.client.rest.resource.PermissionHolder;\r
  26 \r
  27 import java.util.Iterator;\r
  28 import java.util.List;\r
  29 import java.util.Set;\r
  30 \r
  31 import com.google.gwt.core.client.GWT;\r
  32 import com.google.gwt.event.dom.client.ChangeEvent;\r
  33 import com.google.gwt.event.dom.client.ChangeHandler;\r
  34 import com.google.gwt.event.dom.client.ClickEvent;\r
  35 import com.google.gwt.event.dom.client.ClickHandler;\r
  36 import com.google.gwt.i18n.client.DateTimeFormat;\r
  37 import com.google.gwt.json.client.JSONArray;\r
  38 import com.google.gwt.json.client.JSONBoolean;\r
  39 import com.google.gwt.json.client.JSONObject;\r
  40 import com.google.gwt.json.client.JSONString;\r
  41 import com.google.gwt.resources.client.ClientBundle;\r
  42 import com.google.gwt.resources.client.ImageResource;\r
  43 import com.google.gwt.user.client.Command;\r
  44 import com.google.gwt.user.client.DeferredCommand;\r
  45 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  46 import com.google.gwt.user.client.ui.Button;\r
  47 import com.google.gwt.user.client.ui.CheckBox;\r
  48 import com.google.gwt.user.client.ui.DecoratedTabPanel;\r
  49 import com.google.gwt.user.client.ui.DisclosurePanel;\r
  50 import com.google.gwt.user.client.ui.FlexTable;\r
  51 import com.google.gwt.user.client.ui.FlowPanel;\r
  52 import com.google.gwt.user.client.ui.FocusPanel;\r
  53 import com.google.gwt.user.client.ui.HTML;\r
  54 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  55 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  56 import com.google.gwt.user.client.ui.Label;\r
  57 import com.google.gwt.user.client.ui.TextBox;\r
  58 import com.google.gwt.user.client.ui.VerticalPanel;\r
  59 \r
  60 /**\r
  61  * The 'File properties' dialog box implementation.\r
  62  *\r
  63  * @author past\r
  64  */\r
  65 public class FilePropertiesDialog extends AbstractPropertiesDialog {\r
  66 \r
  67         final PermissionsList permList;\r
  68 \r
  69         private CheckBox readForAll;\r
  70 \r
  71         /**\r
  72          * An image bundle for this widgets images.\r
  73          */\r
  74         public interface Images extends ClientBundle,MessagePanel.Images {\r
  75 \r
  76                 @Source("gr/ebs/gss/resources/edit_user.png")\r
  77                 ImageResource permUser();\r
  78 \r
  79                 @Source("gr/ebs/gss/resources/groupevent.png")\r
  80                 ImageResource permGroup();\r
  81 \r
  82                 @Source("gr/ebs/gss/resources/editdelete.png")\r
  83                 ImageResource delete();\r
  84 \r
  85                 @Source("gr/ebs/gss/resources/db_update.png")\r
  86                 ImageResource restore();\r
  87 \r
  88                 @Source("gr/ebs/gss/resources/folder_inbox.png")\r
  89                 ImageResource download();\r
  90         }\r
  91 \r
  92         /**\r
  93          * The widget that holds the name of the file.\r
  94          */\r
  95         private TextBox name = new TextBox();\r
  96 \r
  97         private final CheckBox versioned = new CheckBox();\r
  98 \r
  99         final FileResource file;\r
 100 \r
 101         private String userFullName;\r
 102 \r
 103         /**\r
 104          * The widget's constructor.\r
 105          *\r
 106          * @param images the dialog's ImageBundle\r
 107          * @param groups\r
 108          * @param bodies\r
 109          */\r
 110         public FilePropertiesDialog(final Images images, final List<GroupResource> groups, List<FileResource> bodies, String _userFullName) {\r
 111 \r
 112                 // Set the dialog's caption.\r
 113                 setText("File properties");\r
 114 \r
 115                 file = (FileResource) GSS.get().getCurrentSelection();\r
 116                 userFullName = _userFullName;\r
 117                 permList = new PermissionsList(images, file.getPermissions(), file.getOwner());\r
 118 \r
 119 \r
 120                 // Outer contains inner and buttons.\r
 121                 final VerticalPanel outer = new VerticalPanel();\r
 122                 final FocusPanel focusPanel = new FocusPanel(outer);\r
 123                 // Inner contains generalPanel and permPanel.\r
 124                 inner = new DecoratedTabPanel();\r
 125                 inner.setAnimationEnabled(true);\r
 126                 final VerticalPanel generalPanel = new VerticalPanel();\r
 127                 final VerticalPanel permPanel = new VerticalPanel();\r
 128                 final HorizontalPanel buttons = new HorizontalPanel();\r
 129                 final HorizontalPanel permButtons = new HorizontalPanel();\r
 130                 final HorizontalPanel permForAll = new HorizontalPanel();\r
 131                 final HorizontalPanel pathPanel = new HorizontalPanel();\r
 132                 final VerticalPanel verPanel = new VerticalPanel();\r
 133                 final HorizontalPanel vPanel = new HorizontalPanel();\r
 134                 final HorizontalPanel vPanel2 = new HorizontalPanel();\r
 135 \r
 136                 versioned.setValue(file.isVersioned());\r
 137                 inner.add(generalPanel, "General");\r
 138                 inner.add(permPanel, "Sharing");\r
 139                 inner.add(verPanel, "Versions");\r
 140                 inner.selectTab(0);\r
 141 \r
 142                 final Label fileNameNote = new Label("Please note that slashes ('/') are not allowed in file names.", true);\r
 143                 fileNameNote.setVisible(false);\r
 144                 fileNameNote.setStylePrimaryName("gss-readForAllNote");\r
 145 \r
 146                 final FlexTable generalTable = new FlexTable();\r
 147                 generalTable.setText(0, 0, "Name");\r
 148                 generalTable.setText(1, 0, "Folder");\r
 149                 generalTable.setText(2, 0, "Owner");\r
 150                 generalTable.setText(3, 0, "Last modified");\r
 151                 generalTable.setText(4, 0, "Tags");\r
 152                 name.setWidth("100%");\r
 153                 name.setText(file.getName());\r
 154                 generalTable.setWidget(0, 1, name);\r
 155                 name.addChangeHandler(new ChangeHandler() {\r
 156 \r
 157                         @Override\r
 158                         public void onChange(ChangeEvent event) {\r
 159                                 if(name.getText().contains("/"))\r
 160                                         fileNameNote.setVisible(true);\r
 161                                 else\r
 162                                         fileNameNote.setVisible(false);\r
 163 \r
 164                         }\r
 165                 });\r
 166 \r
 167                 if(file.getFolderName() != null)\r
 168                         generalTable.setText(1, 1, file.getFolderName());\r
 169                 else\r
 170                         generalTable.setText(1, 1, "-");\r
 171                 generalTable.setWidget(0, 2, fileNameNote);\r
 172                 generalTable.setText(2, 1,userFullName);\r
 173 \r
 174                 final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");\r
 175                 generalTable.setText(3, 1, formatter.format(file.getModificationDate()));\r
 176                 // Get the tags.\r
 177                 StringBuffer tagsBuffer = new StringBuffer();\r
 178                 Iterator i = file.getTags().iterator();\r
 179                 while (i.hasNext()) {\r
 180                         String tag = (String) i.next();\r
 181                         tagsBuffer.append(tag).append(", ");\r
 182                 }\r
 183                 if (tagsBuffer.length() > 1)\r
 184                         tagsBuffer.delete(tagsBuffer.length() - 2, tagsBuffer.length() - 1);\r
 185                 initialTagText = tagsBuffer.toString();\r
 186                 tags.setWidth("100%");\r
 187                 tags.setText(initialTagText);\r
 188                 generalTable.setWidget(4, 1, tags);\r
 189                 generalTable.getFlexCellFormatter().setStyleName(0, 0, "props-labels");\r
 190                 generalTable.getFlexCellFormatter().setStyleName(1, 0, "props-labels");\r
 191                 generalTable.getFlexCellFormatter().setStyleName(2, 0, "props-labels");\r
 192                 generalTable.getFlexCellFormatter().setStyleName(3, 0, "props-labels");\r
 193                 generalTable.getFlexCellFormatter().setStyleName(4, 0, "props-labels");\r
 194                 generalTable.getFlexCellFormatter().setStyleName(0, 1, "props-values");\r
 195                 generalTable.getFlexCellFormatter().setStyleName(1, 1, "props-values");\r
 196                 generalTable.getFlexCellFormatter().setStyleName(2, 1, "props-values");\r
 197                 generalTable.getFlexCellFormatter().setStyleName(3, 1, "props-values");\r
 198                 generalTable.getFlexCellFormatter().setStyleName(4, 1, "props-values");\r
 199                 generalTable.setCellSpacing(4);\r
 200 \r
 201                 // Create the 'OK' button, along with a listener that hides the dialog\r
 202                 // when the button is clicked.\r
 203                 final Button ok = new Button("OK", new ClickHandler() {\r
 204                         @Override\r
 205                         public void onClick(ClickEvent event) {\r
 206                                 if(name.getText().contains("/"))\r
 207                                         fileNameNote.setVisible(true);\r
 208                                 else{\r
 209                                         fileNameNote.setVisible(true);\r
 210                                         accept();\r
 211                                         closeDialog();\r
 212                                 }               \r
 213                         }\r
 214                 });\r
 215                 buttons.add(ok);\r
 216                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
 217                 // Create the 'Cancel' button, along with a listener that hides the\r
 218                 // dialog when the button is clicked.\r
 219                 final Button cancel = new Button("Cancel", new ClickHandler() {\r
 220                         @Override\r
 221                         public void onClick(ClickEvent event) {\r
 222                                 closeDialog();\r
 223                         }\r
 224                 });\r
 225                 buttons.add(cancel);\r
 226                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 227                 buttons.setSpacing(8);\r
 228                 buttons.addStyleName("gss-TabPanelBottom");\r
 229 \r
 230                 generalPanel.add(generalTable);\r
 231 \r
 232                 // Asynchronously retrieve the tags defined by this user.\r
 233                 DeferredCommand.addCommand(new Command() {\r
 234 \r
 235                         @Override\r
 236                         public void execute() {\r
 237                                 updateTags();\r
 238                         }\r
 239                 });\r
 240 \r
 241                 DisclosurePanel allTags = new DisclosurePanel("All tags");\r
 242                 allTagsContent = new FlowPanel();\r
 243                 allTagsContent.setWidth("100%");\r
 244                 allTags.setContent(allTagsContent);\r
 245                 generalPanel.add(allTags);\r
 246                 generalPanel.setSpacing(4);\r
 247 \r
 248                 final Button add = new Button("Add Group", new ClickHandler() {\r
 249                         @Override\r
 250                         public void onClick(ClickEvent event) {\r
 251                                 PermissionsAddDialog dlg = new PermissionsAddDialog(groups, permList, false);\r
 252                                 dlg.center();\r
 253                         }\r
 254                 });\r
 255                 permButtons.add(add);\r
 256                 permButtons.setCellHorizontalAlignment(add, HasHorizontalAlignment.ALIGN_CENTER);\r
 257 \r
 258                 final Button addUser = new Button("Add User", new ClickHandler() {\r
 259                         @Override\r
 260                         public void onClick(ClickEvent event) {\r
 261                                 PermissionsAddDialog dlg = new PermissionsAddDialog(groups, permList, true);\r
 262                                 dlg.center();\r
 263                         }\r
 264                 });\r
 265                 permButtons.add(addUser);\r
 266                 permButtons.setCellHorizontalAlignment(addUser, HasHorizontalAlignment.ALIGN_CENTER);\r
 267 \r
 268                 permButtons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 269                 permButtons.setSpacing(8);\r
 270                 permButtons.addStyleName("gss-TabPanelBottom");\r
 271 \r
 272                 final Label readForAllNote = new Label("When this option is enabled, the file will be readable" +\r
 273                                         " by everyone. By checking this option, you are certifying that you have the right to " +\r
 274                                         "distribute this file and that it does not violate the Terms of Use.", true);\r
 275                 readForAllNote.setVisible(false);\r
 276                 readForAllNote.setStylePrimaryName("gss-readForAllNote");\r
 277 \r
 278                 readForAll = new CheckBox();\r
 279                 readForAll.setValue(file.isReadForAll());\r
 280                 readForAll.addClickHandler(new ClickHandler() {\r
 281                         @Override\r
 282                         public void onClick(ClickEvent event) {\r
 283                                 readForAllNote.setVisible(readForAll.getValue());\r
 284                         }\r
 285 \r
 286                 });\r
 287 \r
 288                 permPanel.add(permList);\r
 289                 permPanel.add(permButtons);\r
 290                 // Only show the read for all permission if the user is the owner.\r
 291                 if (file.getOwner().equals(GSS.get().getCurrentUserResource().getUsername())) {\r
 292                         permForAll.add(new Label("Public"));\r
 293                         permForAll.add(readForAll);\r
 294                         permForAll.setSpacing(8);\r
 295                         permForAll.addStyleName("gss-TabPanelBottom");\r
 296                         permForAll.add(readForAllNote);\r
 297                         permPanel.add(permForAll);\r
 298                 }\r
 299 \r
 300                 TextBox path = new TextBox();\r
 301                 path.setWidth("100%");\r
 302                 path.addClickHandler(new ClickHandler() {\r
 303                         @Override\r
 304                         public void onClick(ClickEvent event) {\r
 305                                 GSS.enableIESelection();\r
 306                                 ((TextBox) event.getSource()).selectAll();\r
 307                                 GSS.preventIESelection();\r
 308                         }\r
 309 \r
 310                 });\r
 311                 path.setText(file.getUri());\r
 312                 path.setTitle("Use this link for sharing the file via e-mail, IM, etc. (crtl-C/cmd-C to copy to system clipboard)");\r
 313                 path.setWidth("100%");\r
 314                 path.setReadOnly(true);\r
 315                 pathPanel.setWidth("100%");\r
 316                 pathPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);\r
 317                 pathPanel.add(new Label("Link"));\r
 318                 pathPanel.setSpacing(8);\r
 319                 pathPanel.addStyleName("gss-TabPanelBottom");\r
 320                 pathPanel.add(path);\r
 321                 permPanel.add(pathPanel);\r
 322 \r
 323                 VersionsList verList = new VersionsList(this, images, bodies);\r
 324                 verPanel.add(verList);\r
 325 \r
 326                 vPanel.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 327                 vPanel.setSpacing(8);\r
 328                 vPanel.addStyleName("gss-TabPanelBottom");\r
 329                 vPanel.add(new Label("Versioned"));\r
 330 \r
 331                 vPanel.add(versioned);\r
 332                 verPanel.add(vPanel);\r
 333                 vPanel2.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 334                 vPanel2.setSpacing(8);\r
 335                 vPanel2.addStyleName("gss-TabPanelBottom");\r
 336                 Button removeVersionsButton = new Button(AbstractImagePrototype.create(images.delete()).getHTML(), new ClickHandler() {\r
 337                         @Override\r
 338                         public void onClick(ClickEvent event) {\r
 339                                 ConfirmationDialog confirm = new ConfirmationDialog("Really " +\r
 340                                                 "remove all previous versions?", "Remove") {\r
 341 \r
 342                                         @Override\r
 343                                         public void cancel() {\r
 344                                         }\r
 345 \r
 346                                         @Override\r
 347                                         public void confirm() {\r
 348                                                 FilePropertiesDialog.this.closeDialog();\r
 349                                                 removeAllOldVersions();\r
 350                                         }\r
 351 \r
 352                                 };\r
 353                                 confirm.center();\r
 354                         }\r
 355 \r
 356                 });\r
 357                 HTML removeAllVersion = new HTML("<span>Remove all previous versions?</span>");\r
 358                 vPanel2.add(removeAllVersion);\r
 359                 vPanel2.add(removeVersionsButton);\r
 360                 verPanel.add(vPanel2);\r
 361                 if(!file.isVersioned())\r
 362                         vPanel2.setVisible(false);\r
 363                 outer.add(inner);\r
 364                 outer.add(buttons);\r
 365                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
 366                 outer.addStyleName("gss-TabPanelBottom");\r
 367 \r
 368                 focusPanel.setFocus(true);\r
 369                 setWidget(outer);\r
 370         }\r
 371 \r
 372 \r
 373         /**\r
 374          * Accepts any change and updates the file\r
 375          *\r
 376          */\r
 377         @Override\r
 378         protected void accept() {\r
 379                 String newFilename = null;\r
 380                 permList.updatePermissionsAccordingToInput();\r
 381                 Set<PermissionHolder> perms = permList.getPermissions();\r
 382                 JSONObject json = new JSONObject();\r
 383                 if (!name.getText().equals(file.getName())) {\r
 384                         newFilename = name.getText();\r
 385                         json.put("name", new JSONString(newFilename));\r
 386                 }\r
 387                 if (versioned.getValue() != file.isVersioned())\r
 388                         json.put("versioned", JSONBoolean.getInstance(versioned.getValue()));\r
 389                 //only update the read for all perm if the user is the owner\r
 390                 if (readForAll.getValue() != file.isReadForAll())\r
 391                         if (file.getOwner().equals(GSS.get().getCurrentUserResource().getUsername()))\r
 392                                 json.put("readForAll", JSONBoolean.getInstance(readForAll.getValue()));\r
 393                 int i = 0;\r
 394                 if (permList.hasChanges()) {\r
 395                         GWT.log("Permissions change", null);\r
 396                         JSONArray perma = new JSONArray();\r
 397 \r
 398                         for (PermissionHolder p : perms) {\r
 399                                 JSONObject po = new JSONObject();\r
 400                                 if (p.getUser() != null)\r
 401                                         po.put("user", new JSONString(p.getUser()));\r
 402                                 if (p.getGroup() != null)\r
 403                                         po.put("group", new JSONString(p.getGroup()));\r
 404                                 po.put("read", JSONBoolean.getInstance(p.isRead()));\r
 405                                 po.put("write", JSONBoolean.getInstance(p.isWrite()));\r
 406                                 po.put("modifyACL", JSONBoolean.getInstance(p.isModifyACL()));\r
 407                                 perma.set(i, po);\r
 408                                 i++;\r
 409                         }\r
 410                         json.put("permissions", perma);\r
 411                 }\r
 412                 JSONArray taga = new JSONArray();\r
 413                 i = 0;\r
 414                 if (!tags.getText().equals(initialTagText)) {\r
 415                         String[] tagset = tags.getText().split(",");\r
 416                         for (String t : tagset) {\r
 417                                 JSONString to = new JSONString(t);\r
 418                                 taga.set(i, to);\r
 419                                 i++;\r
 420                         }\r
 421                         json.put("tags", taga);\r
 422                 }\r
 423                 String jsonString = json.toString();\r
 424                 if(jsonString.equals("{}")){\r
 425                         GWT.log("NO CHANGES", null);\r
 426                         return;\r
 427                 }\r
 428                 final String newFilenameFinal = newFilename;\r
 429                 PostCommand cf = new PostCommand(file.getUri() + "?update=", jsonString, 200) {\r
 430 \r
 431                         @Override\r
 432                         public void onComplete() {\r
 433                                 GSS.get().getFileList().updateFileCache(true, false /* do not clear selected file*/, newFilenameFinal);\r
 434                         }\r
 435 \r
 436                         @Override\r
 437                         public void onError(Throwable t) {\r
 438                                 GWT.log("", t);\r
 439                                 if (t instanceof RestException) {\r
 440                                         int statusCode = ((RestException) t).getHttpStatusCode();\r
 441                                         if (statusCode == 405)\r
 442                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 443                                         else if (statusCode == 404)\r
 444                                                 GSS.get().displayError("User in permissions does not exist");\r
 445                                         else if (statusCode == 409)\r
 446                                                 GSS.get().displayError("A file with the same name already exists");\r
 447                                         else if (statusCode == 413)\r
 448                                                 GSS.get().displayError("Your quota has been exceeded");\r
 449                                         else\r
 450                                                 GSS.get().displayError("Unable to modify file:" + ((RestException) t).getHttpStatusText());\r
 451                                 } else\r
 452                                         GSS.get().displayError("System error modifying file:" + t.getMessage());\r
 453                         }\r
 454 \r
 455                 };\r
 456                 DeferredCommand.addCommand(cf);\r
 457 \r
 458         }\r
 459 \r
 460         private void removeAllOldVersions() {\r
 461                 JSONObject json = new JSONObject();\r
 462                 json.put("versioned", JSONBoolean.getInstance(false));\r
 463                 GWT.log(json.toString(), null);\r
 464                 PostCommand cf = new PostCommand(file.getUri() + "?update=", json.toString(), 200) {\r
 465 \r
 466                         @Override\r
 467                         public void onComplete() {\r
 468                                 toggleVersioned(true);\r
 469                         }\r
 470 \r
 471                         @Override\r
 472                         public void onError(Throwable t) {\r
 473                                 GWT.log("", t);\r
 474                                 if (t instanceof RestException) {\r
 475                                         int statusCode = ((RestException) t).getHttpStatusCode();\r
 476                                         if (statusCode == 405)\r
 477                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 478                                         else if (statusCode == 404)\r
 479                                                 GSS.get().displayError("User in permissions does not exist");\r
 480                                         else if (statusCode == 409)\r
 481                                                 GSS.get().displayError("A folder with the same name already exists");\r
 482                                         else if (statusCode == 413)\r
 483                                                 GSS.get().displayError("Your quota has been exceeded");\r
 484                                         else\r
 485                                                 GSS.get().displayError("Unable to modify file:" + ((RestException) t).getHttpStatusText());\r
 486                                 } else\r
 487                                         GSS.get().displayError("System error moifying file:" + t.getMessage());\r
 488                         }\r
 489                 };\r
 490                 DeferredCommand.addCommand(cf);\r
 491         }\r
 492 \r
 493         private void toggleVersioned(boolean versionedValue) {\r
 494                 JSONObject json = new JSONObject();\r
 495                 json.put("versioned", JSONBoolean.getInstance(versionedValue));\r
 496                 GWT.log(json.toString(), null);\r
 497                 PostCommand cf = new PostCommand(file.getUri() + "?update=", json.toString(), 200) {\r
 498 \r
 499                         @Override\r
 500                         public void onComplete() {\r
 501                                 GSS.get().getFileList().updateFileCache(true, false /* do not clear selected file*/);\r
 502                         }\r
 503 \r
 504                         @Override\r
 505                         public void onError(Throwable t) {\r
 506                                 GWT.log("", t);\r
 507                                 if (t instanceof RestException) {\r
 508                                         int statusCode = ((RestException) t).getHttpStatusCode();\r
 509                                         if (statusCode == 405)\r
 510                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 511                                         else if (statusCode == 404)\r
 512                                                 GSS.get().displayError("User in permissions does not exist");\r
 513                                         else if (statusCode == 409)\r
 514                                                 GSS.get().displayError("A folder with the same name already exists");\r
 515                                         else if (statusCode == 413)\r
 516                                                 GSS.get().displayError("Your quota has been exceeded");\r
 517                                         else\r
 518                                                 GSS.get().displayError("Unable to modify file:" + ((RestException) t).getHttpStatusText());\r
 519                                 } else\r
 520                                         GSS.get().displayError("System error moifying file:" + t.getMessage());\r
 521                         }\r
 522                 };\r
 523                 DeferredCommand.addCommand(cf);\r
 524         }\r
 525 \r
 526 }\r