src/com/owncloud/android/ui/fragment/OCFileListFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2014 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18 package com.owncloud.android.ui.fragment;
  19
  20 import java.io.File;
  21 import java.util.ArrayList;
  22 import java.util.List;
  23
  24 import com.owncloud.android.R;
  25 import com.owncloud.android.authentication.AccountUtils;
  26 import com.owncloud.android.datamodel.FileDataStorageManager;
  27 import com.owncloud.android.datamodel.OCFile;
  28 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  29 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  30 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  31 import com.owncloud.android.lib.common.operations.RemoteOperation;
  32 import com.owncloud.android.operations.RemoveFileOperation;
  33 import com.owncloud.android.operations.RenameFileOperation;
  34 import com.owncloud.android.operations.SynchronizeFileOperation;
  35 import com.owncloud.android.ui.activity.FileDisplayActivity;
  36 import com.owncloud.android.ui.activity.TransferServiceGetter;
  37 import com.owncloud.android.ui.adapter.FileListListAdapter;
  38 import com.owncloud.android.ui.dialog.EditNameDialog;
  39 import com.owncloud.android.ui.dialog.EditNameDialog.EditNameDialogListener;
  40 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
  41 import com.owncloud.android.ui.preview.PreviewImageFragment;
  42 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  43 import com.owncloud.android.utils.Log_OC;
  44
  45 import android.accounts.Account;
  46 import android.app.Activity;
  47 import android.os.Bundle;
  48 import android.os.Handler;
  49 import android.view.ContextMenu;
  50 import android.view.MenuInflater;
  51 import android.view.MenuItem;
  52 import android.view.View;
  53 import android.widget.AdapterView;
  54 import android.widget.AdapterView.AdapterContextMenuInfo;
  55
  56 /**
  57  * A Fragment that lists all files and folders in a given path.
  58  *
  59  * @author Bartek Przybylski
  60  *
  61  */
  62 public class OCFileListFragment extends ExtendedListFragment implements EditNameDialogListener, ConfirmationDialogFragmentListener {
  63
  64     private static final String TAG = OCFileListFragment.class.getSimpleName();
  65
  66     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ? OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  67     private static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  68
  69     private static final String KEY_INDEXES = "INDEXES";
  70     private static final String KEY_FIRST_POSITIONS= "FIRST_POSITIONS";
  71     private static final String KEY_TOPS = "TOPS";
  72
  73     private OCFileListFragment.ContainerActivity mContainerActivity;
  74
  75     private OCFile mFile = null;
  76     private FileListListAdapter mAdapter;
  77
  78     private Handler mHandler;
  79     private OCFile mTargetFile;
  80
  81     private ArrayList<Integer> mIndexes;
  82     private ArrayList<Integer> mFirstPositions;
  83     private ArrayList<Integer> mTops;
  84
  85
  86     /**
  87      * {@inheritDoc}
  88      */
  89     @Override
  90     public void onAttach(Activity activity) {
  91         super.onAttach(activity);
  92         Log_OC.e(TAG, "onAttach");
  93         try {
  94             mContainerActivity = (ContainerActivity) activity;
  95         } catch (ClassCastException e) {
  96             throw new ClassCastException(activity.toString() + " must implement " + OCFileListFragment.ContainerActivity.class.getSimpleName());
  97         }
  98     }
  99
 100
 101     /**
 102      * {@inheritDoc}
 103      */
 104     @Override
 105     public void onActivityCreated(Bundle savedInstanceState) {
 106         super.onActivityCreated(savedInstanceState);
 107         Log_OC.e(TAG, "onActivityCreated() start");
 108         mAdapter = new FileListListAdapter(getActivity(), mContainerActivity);
 109         if (savedInstanceState != null) {
 110             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
 111             mIndexes = savedInstanceState.getIntegerArrayList(KEY_INDEXES);
 112             mFirstPositions = savedInstanceState.getIntegerArrayList(KEY_FIRST_POSITIONS);
 113             mTops = savedInstanceState.getIntegerArrayList(KEY_TOPS);
 114
 115         } else {
 116             mIndexes = new ArrayList<Integer>();
 117             mFirstPositions = new ArrayList<Integer>();
 118             mTops = new ArrayList<Integer>();
 119
 120         }
 121
 122         setListAdapter(mAdapter);
 123
 124         registerForContextMenu(getListView());
 125         getListView().setOnCreateContextMenuListener(this);
 126
 127         mHandler = new Handler();
 128
 129     }
 130
 131     /**
 132      * Saves the current listed folder.
 133      */
 134     @Override
 135     public void onSaveInstanceState (Bundle outState) {
 136         super.onSaveInstanceState(outState);
 137         outState.putParcelable(EXTRA_FILE, mFile);
 138         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 139         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 140         outState.putIntegerArrayList(KEY_TOPS, mTops);
 141     }
 142
 143     /**
 144      * Call this, when the user presses the up button.
 145      *
 146      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 147      * it continues browsing up until finding an existing folders.
 148      *
 149      * return       Count of folder levels browsed up.
 150      */
 151     public int onBrowseUp() {
 152         OCFile parentDir = null;
 153         int moveCount = 0;
 154
 155         if(mFile != null){
 156             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 157
 158             String parentPath = null;
 159             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 160                 parentPath = new File(mFile.getRemotePath()).getParent();
 161                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 162                 parentDir = storageManager.getFileByPath(parentPath);
 163                 moveCount++;
 164             } else {
 165                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 166             }
 167             while (parentDir == null) {
 168                 parentPath = new File(parentPath).getParent();
 169                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 170                 parentDir = storageManager.getFileByPath(parentPath);
 171                 moveCount++;
 172             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 173             mFile = parentDir;
 174         }
 175
 176         if (mFile != null) {
 177             listDirectory(mFile);
 178
 179             mContainerActivity.startSyncFolderOperation(mFile);
 180
 181             // restore index and top position
 182             restoreIndexAndTopPosition();
 183
 184         }   // else - should never happen now
 185
 186         return moveCount;
 187     }
 188
 189     /*
 190      * Restore index and position
 191      */
 192     private void restoreIndexAndTopPosition() {
 193         int index = mIndexes.get(mIndexes.size() - 1);
 194         mIndexes.remove(mIndexes.size() - 1);
 195
 196         int firstPosition = mFirstPositions.get(mFirstPositions.size() - 1);
 197         mFirstPositions.remove(mFirstPositions.size() -1);
 198
 199         int top = mTops.get(mTops.size() - 1);
 200         mTops.remove(mTops.size() - 1);
 201
 202         mList.setSelectionFromTop(firstPosition, top);
 203
 204         // Move the scroll if the selection is not visible
 205         View view = mList.getChildAt(0);
 206         int indexPosition = view.getHeight()*index;
 207         int height = mList.getHeight();
 208
 209         if (indexPosition > height) {
 210             mList.smoothScrollToPosition(index);
 211         }
 212     }
 213
 214     /*
 215      * Save index and top position
 216      */
 217     private void saveIndexAndTopPosition(int index) {
 218
 219         mIndexes.add(index);
 220
 221         int firstPosition = mList.getFirstVisiblePosition();
 222         mFirstPositions.add(firstPosition);
 223
 224         View view = mList.getChildAt(0);
 225         int top = (view == null) ? 0 : view.getTop() ;
 226
 227         mTops.add(top);
 228     }
 229
 230     @Override
 231     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 232         OCFile file = (OCFile) mAdapter.getItem(position);
 233         if (file != null) {
 234             if (file.isFolder()) {
 235                 // update state and view of this fragment
 236                 listDirectory(file);
 237                 // then, notify parent activity to let it update its state and view, and other fragments
 238                 mContainerActivity.onBrowsedDownTo(file);
 239                 // save index and top position
 240                 saveIndexAndTopPosition(position);
 241
 242             } else { /// Click on a file
 243                 if (PreviewImageFragment.canBePreviewed(file)) {
 244                     // preview image - it handles the download, if needed
 245                     mContainerActivity.startImagePreview(file);
 246
 247                 } else if (file.isDown()) {
 248                     if (PreviewMediaFragment.canBePreviewed(file)) {
 249                         // media preview
 250                         mContainerActivity.startMediaPreview(file, 0, true);
 251                     } else {
 252                         FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 253                         activity.getFileOperationsHelper().openFile(file, activity);
 254                     }
 255
 256                 } else {
 257                     // automatic download, preview on finish
 258                     mContainerActivity.startDownloadForPreview(file);
 259                 }
 260
 261             }
 262
 263         } else {
 264             Log_OC.d(TAG, "Null object in ListAdapter!!");
 265         }
 266
 267     }
 268
 269     /**
 270      * {@inheritDoc}
 271      */
 272     @Override
 273     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 274         super.onCreateContextMenu(menu, v, menuInfo);
 275         MenuInflater inflater = getActivity().getMenuInflater();
 276         inflater.inflate(R.menu.file_actions_menu, menu);
 277         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 278         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 279         List<Integer> toHide = new ArrayList<Integer>();
 280         List<Integer> toDisable = new ArrayList<Integer>();
 281
 282         MenuItem item = null;
 283         if (targetFile.isFolder()) {
 284             // contextual menu for folders
 285             toHide.add(R.id.action_open_file_with);
 286             toHide.add(R.id.action_download_file);
 287             toHide.add(R.id.action_cancel_download);
 288             toHide.add(R.id.action_cancel_upload);
 289             toHide.add(R.id.action_sync_file);
 290             toHide.add(R.id.action_see_details);
 291             toHide.add(R.id.action_send_file);
 292             if (    mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile) ||
 293                     mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)           ) {
 294                 toDisable.add(R.id.action_rename_file);
 295                 toDisable.add(R.id.action_remove_file);
 296
 297             }
 298
 299         } else {
 300             // contextual menu for regular files
 301
 302             // new design: 'download' and 'open with' won't be available anymore in context menu
 303             toHide.add(R.id.action_download_file);
 304             toHide.add(R.id.action_open_file_with);
 305
 306             if (targetFile.isDown()) {
 307                 toHide.add(R.id.action_cancel_download);
 308                 toHide.add(R.id.action_cancel_upload);
 309
 310             } else {
 311                 toHide.add(R.id.action_sync_file);
 312             }
 313             if ( mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 314                 toHide.add(R.id.action_cancel_upload);
 315                 toDisable.add(R.id.action_rename_file);
 316                 toDisable.add(R.id.action_remove_file);
 317
 318             } else if ( mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 319                 toHide.add(R.id.action_cancel_download);
 320                 toDisable.add(R.id.action_rename_file);
 321                 toDisable.add(R.id.action_remove_file);
 322
 323             } else {
 324                 toHide.add(R.id.action_cancel_download);
 325                 toHide.add(R.id.action_cancel_upload);
 326             }
 327         }
 328
 329         // Options shareLink
 330         if (!targetFile.isShareByLink()) {
 331             toHide.add(R.id.action_unshare_file);
 332         }
 333
 334         // Send file
 335         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 336         if (!sendEnabled) {
 337             toHide.add(R.id.action_send_file);
 338         }
 339
 340         for (int i : toHide) {
 341             item = menu.findItem(i);
 342             if (item != null) {
 343                 item.setVisible(false);
 344                 item.setEnabled(false);
 345             }
 346         }
 347
 348         for (int i : toDisable) {
 349             item = menu.findItem(i);
 350             if (item != null) {
 351                 item.setEnabled(false);
 352             }
 353         }
 354     }
 355
 356
 357     /**
 358      * {@inhericDoc}
 359      */
 360     @Override
 361     public boolean onContextItemSelected (MenuItem item) {
 362         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 363         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 364         switch (item.getItemId()) {
 365             case R.id.action_share_file: {
 366                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 367                 activity.getFileOperationsHelper().shareFileWithLink(mTargetFile, activity);
 368                 return true;
 369             }
 370             case R.id.action_unshare_file: {
 371                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 372                 activity.getFileOperationsHelper().unshareFileWithLink(mTargetFile, activity);
 373                 return true;
 374             }
 375             case R.id.action_rename_file: {
 376                 String fileName = mTargetFile.getFileName();
 377                 int extensionStart = mTargetFile.isFolder() ? -1 : fileName.lastIndexOf(".");
 378                 int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 379                 EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 380                 dialog.show(getFragmentManager(), EditNameDialog.TAG);
 381                 return true;
 382             }
 383             case R.id.action_remove_file: {
 384                 int messageStringId = R.string.confirmation_remove_alert;
 385                 int posBtnStringId = R.string.confirmation_remove_remote;
 386                 int neuBtnStringId = -1;
 387                 if (mTargetFile.isFolder()) {
 388                     messageStringId = R.string.confirmation_remove_folder_alert;
 389                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 390                     neuBtnStringId = R.string.confirmation_remove_folder_local;
 391                 } else if (mTargetFile.isDown()) {
 392                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 393                     neuBtnStringId = R.string.confirmation_remove_local;
 394                 }
 395                 ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 396                         messageStringId,
 397                         new String[]{mTargetFile.getFileName()},
 398                         posBtnStringId,
 399                         neuBtnStringId,
 400                         R.string.common_cancel);
 401                 confDialog.setOnConfirmationListener(this);
 402                 confDialog.show(getFragmentManager(), FileDetailFragment.FTAG_CONFIRMATION);
 403                 return true;
 404             }
 405             case R.id.action_sync_file: {
 406                 Account account = AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity());
 407                 RemoteOperation operation = new SynchronizeFileOperation(mTargetFile, null, mContainerActivity.getStorageManager(), account, true, getSherlockActivity());
 408                 operation.execute(account, getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 409                 ((FileDisplayActivity) getSherlockActivity()).showLoadingDialog();
 410                 return true;
 411             }
 412             case R.id.action_cancel_download: {
 413                 FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 414                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 415                 if (downloaderBinder != null && downloaderBinder.isDownloading(account, mTargetFile)) {
 416                     downloaderBinder.cancel(account, mTargetFile);
 417                     listDirectory();
 418                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 419                 }
 420                 return true;
 421             }
 422             case R.id.action_cancel_upload: {
 423                 FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 424                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 425                 if (uploaderBinder != null && uploaderBinder.isUploading(account, mTargetFile)) {
 426                     uploaderBinder.cancel(account, mTargetFile);
 427                     listDirectory();
 428                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 429                 }
 430                 return true;
 431             }
 432             case R.id.action_see_details: {
 433                 ((FileFragment.ContainerActivity)getActivity()).showDetails(mTargetFile);
 434                 return true;
 435             }
 436             case R.id.action_send_file: {
 437                 // Obtain the file
 438                 if (!mTargetFile.isDown()) {  // Download the file
 439                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 440                     mContainerActivity.startDownloadForSending(mTargetFile);
 441
 442                 } else {
 443
 444                     FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 445                     activity.getFileOperationsHelper().sendDownloadedFile(mTargetFile, activity);
 446                 }
 447                 return true;
 448             }
 449             default:
 450                 return super.onContextItemSelected(item);
 451         }
 452     }
 453
 454
 455     /**
 456      * Use this to query the {@link OCFile} that is currently
 457      * being displayed by this fragment
 458      * @return The currently viewed OCFile
 459      */
 460     public OCFile getCurrentFile(){
 461         return mFile;
 462     }
 463
 464     /**
 465      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 466      */
 467     public void listDirectory(){
 468         listDirectory(null);
 469     }
 470
 471     /**
 472      * Lists the given directory on the view. When the input parameter is null,
 473      * it will either refresh the last known directory. list the root
 474      * if there never was a directory.
 475      *
 476      * @param directory File to be listed
 477      */
 478     public void listDirectory(OCFile directory) {
 479         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 480         if (storageManager != null) {
 481
 482             // Check input parameters for null
 483             if(directory == null){
 484                 if(mFile != null){
 485                     directory = mFile;
 486                 } else {
 487                     directory = storageManager.getFileByPath("/");
 488                     if (directory == null) return; // no files, wait for sync
 489                 }
 490             }
 491
 492
 493             // If that's not a directory -> List its parent
 494             if(!directory.isFolder()){
 495                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 496                 directory = storageManager.getFileById(directory.getParentId());
 497             }
 498
 499             mAdapter.swapDirectory(directory, storageManager);
 500             if (mFile == null || !mFile.equals(directory)) {
 501                 mList.setSelectionFromTop(0, 0);
 502             }
 503             mFile = directory;
 504         }
 505     }
 506
 507
 508
 509     /**
 510      * Interface to implement by any Activity that includes some instance of FileListFragment
 511      *
 512      * @author David A. Velasco
 513      */
 514     public interface ContainerActivity extends TransferServiceGetter, OnRemoteOperationListener {
 515
 516         /**
 517          * Callback method invoked when a the user browsed into a different folder through the list of files
 518          *
 519          * @param file
 520          */
 521         public void onBrowsedDownTo(OCFile folder);
 522
 523         public void startDownloadForPreview(OCFile file);
 524
 525         public void startMediaPreview(OCFile file, int i, boolean b);
 526
 527         public void startImagePreview(OCFile file);
 528
 529         public void startSyncFolderOperation(OCFile folder);
 530
 531         /**
 532          * Getter for the current DataStorageManager in the container activity
 533          */
 534         public FileDataStorageManager getStorageManager();
 535
 536
 537         /**
 538          * Callback method invoked when a the 'transfer state' of a file changes.
 539          *
 540          * This happens when a download or upload is started or ended for a file.
 541          *
 542          * This method is necessary by now to update the user interface of the double-pane layout in tablets
 543          * because methods {@link FileDownloaderBinder#isDownloading(Account, OCFile)} and {@link FileUploaderBinder#isUploading(Account, OCFile)}
 544          * won't provide the needed response before the method where this is called finishes.
 545          *
 546          * TODO Remove this when the transfer state of a file is kept in the database (other thing TODO)
 547          *
 548          * @param file          OCFile which state changed.
 549          * @param downloading   Flag signaling if the file is now downloading.
 550          * @param uploading     Flag signaling if the file is now uploading.
 551          */
 552         public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading);
 553
 554         void startDownloadForSending(OCFile file);
 555
 556     }
 557
 558
 559     @Override
 560     public void onDismiss(EditNameDialog dialog) {
 561         if (dialog.getResult()) {
 562             String newFilename = dialog.getNewFilename();
 563             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 564             RemoteOperation operation = new RenameFileOperation(mTargetFile,
 565                                                                 AccountUtils.getCurrentOwnCloudAccount(getActivity()),
 566                                                                 newFilename,
 567                                                                 mContainerActivity.getStorageManager());
 568             operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 569             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 570         }
 571     }
 572
 573
 574     @Override
 575     public void onConfirmation(String callerTag) {
 576         if (callerTag.equals(FileDetailFragment.FTAG_CONFIRMATION)) {
 577             if (mContainerActivity.getStorageManager().getFileById(mTargetFile.getFileId()) != null) {
 578                 RemoteOperation operation = new RemoveFileOperation( mTargetFile,
 579                                                                     true,
 580                                                                     mContainerActivity.getStorageManager());
 581                 operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 582
 583                 ((FileDisplayActivity) getActivity()).showLoadingDialog();
 584             }
 585         }
 586     }
 587
 588     @Override
 589     public void onNeutral(String callerTag) {
 590         mContainerActivity.getStorageManager().removeFile(mTargetFile, false, true);    // TODO perform in background task / new thread
 591         listDirectory();
 592         mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 593     }
 594
 595     @Override
 596     public void onCancel(String callerTag) {
 597         Log_OC.d(TAG, "REMOVAL CANCELED");
 598     }
 599
 600
 601 }