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     private static final String KEY_HEIGHT_CELL = "HEIGHT_CELL";
  73
  74     private OCFileListFragment.ContainerActivity mContainerActivity;
  75
  76     private OCFile mFile = null;
  77     private FileListListAdapter mAdapter;
  78
  79     private Handler mHandler;
  80     private OCFile mTargetFile;
  81
  82     // Save the state of the scroll in browsing
  83     private ArrayList<Integer> mIndexes;
  84     private ArrayList<Integer> mFirstPositions;
  85     private ArrayList<Integer> mTops;
  86
  87     private int mHeightCell = 0;
  88
  89     /**
  90      * {@inheritDoc}
  91      */
  92     @Override
  93     public void onAttach(Activity activity) {
  94         super.onAttach(activity);
  95         Log_OC.e(TAG, "onAttach");
  96         try {
  97             mContainerActivity = (ContainerActivity) activity;
  98         } catch (ClassCastException e) {
  99             throw new ClassCastException(activity.toString() + " must implement " + OCFileListFragment.ContainerActivity.class.getSimpleName());
 100         }
 101     }
 102
 103
 104     /**
 105      * {@inheritDoc}
 106      */
 107     @Override
 108     public void onActivityCreated(Bundle savedInstanceState) {
 109         super.onActivityCreated(savedInstanceState);
 110         Log_OC.e(TAG, "onActivityCreated() start");
 111         mAdapter = new FileListListAdapter(getActivity(), mContainerActivity);
 112         if (savedInstanceState != null) {
 113             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
 114             mIndexes = savedInstanceState.getIntegerArrayList(KEY_INDEXES);
 115             mFirstPositions = savedInstanceState.getIntegerArrayList(KEY_FIRST_POSITIONS);
 116             mTops = savedInstanceState.getIntegerArrayList(KEY_TOPS);
 117             mHeightCell = savedInstanceState.getInt(KEY_HEIGHT_CELL);
 118
 119         } else {
 120             mIndexes = new ArrayList<Integer>();
 121             mFirstPositions = new ArrayList<Integer>();
 122             mTops = new ArrayList<Integer>();
 123             mHeightCell = 0;
 124
 125         }
 126
 127         setListAdapter(mAdapter);
 128
 129         registerForContextMenu(getListView());
 130         getListView().setOnCreateContextMenuListener(this);
 131
 132         mHandler = new Handler();
 133
 134     }
 135
 136     /**
 137      * Saves the current listed folder.
 138      */
 139     @Override
 140     public void onSaveInstanceState (Bundle outState) {
 141         super.onSaveInstanceState(outState);
 142         outState.putParcelable(EXTRA_FILE, mFile);
 143         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 144         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 145         outState.putIntegerArrayList(KEY_TOPS, mTops);
 146         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 147     }
 148
 149     /**
 150      * Call this, when the user presses the up button.
 151      *
 152      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 153      * it continues browsing up until finding an existing folders.
 154      *
 155      * return       Count of folder levels browsed up.
 156      */
 157     public int onBrowseUp() {
 158         OCFile parentDir = null;
 159         int moveCount = 0;
 160
 161         if(mFile != null){
 162             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 163
 164             String parentPath = null;
 165             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 166                 parentPath = new File(mFile.getRemotePath()).getParent();
 167                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 168                 parentDir = storageManager.getFileByPath(parentPath);
 169                 moveCount++;
 170             } else {
 171                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 172             }
 173             while (parentDir == null) {
 174                 parentPath = new File(parentPath).getParent();
 175                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 176                 parentDir = storageManager.getFileByPath(parentPath);
 177                 moveCount++;
 178             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 179             mFile = parentDir;
 180         }
 181
 182         if (mFile != null) {
 183             listDirectory(mFile);
 184
 185             mContainerActivity.startSyncFolderOperation(mFile);
 186
 187             // restore index and top position
 188             restoreIndexAndTopPosition();
 189
 190         }   // else - should never happen now
 191
 192         return moveCount;
 193     }
 194
 195     /*
 196      * Restore index and position
 197      */
 198     private void restoreIndexAndTopPosition() {
 199         if (mIndexes.size() > 0) {
 200             // needs to be checked; not every browse-up had a browse-down before
 201
 202             int index = mIndexes.remove(mIndexes.size() - 1);
 203
 204             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 205
 206             int top = mTops.remove(mTops.size() - 1);
 207
 208             mList.setSelectionFromTop(firstPosition, top);
 209
 210             // Move the scroll if the selection is not visible
 211             int indexPosition = mHeightCell*index;
 212             int height = mList.getHeight();
 213
 214             if (indexPosition > height) {
 215                 if (android.os.Build.VERSION.SDK_INT >= 11)
 216                 {
 217                     mList.smoothScrollToPosition(index);
 218                 }
 219                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 220                 {
 221                     mList.setSelectionFromTop(index, 0);
 222                 }
 223
 224             }
 225         }
 226     }
 227
 228     /*
 229      * Save index and top position
 230      */
 231     private void saveIndexAndTopPosition(int index) {
 232
 233         mIndexes.add(index);
 234
 235         int firstPosition = mList.getFirstVisiblePosition();
 236         mFirstPositions.add(firstPosition);
 237
 238         View view = mList.getChildAt(0);
 239         int top = (view == null) ? 0 : view.getTop() ;
 240
 241         mTops.add(top);
 242
 243         // Save the height of a cell
 244         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 245     }
 246
 247     @Override
 248     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 249         OCFile file = (OCFile) mAdapter.getItem(position);
 250         if (file != null) {
 251             if (file.isFolder()) {
 252                 // update state and view of this fragment
 253                 listDirectory(file);
 254                 // then, notify parent activity to let it update its state and view, and other fragments
 255                 mContainerActivity.onBrowsedDownTo(file);
 256                 // save index and top position
 257                 saveIndexAndTopPosition(position);
 258
 259             } else { /// Click on a file
 260                 if (PreviewImageFragment.canBePreviewed(file)) {
 261                     // preview image - it handles the download, if needed
 262                     mContainerActivity.startImagePreview(file);
 263
 264                 } else if (file.isDown()) {
 265                     if (PreviewMediaFragment.canBePreviewed(file)) {
 266                         // media preview
 267                         mContainerActivity.startMediaPreview(file, 0, true);
 268                     } else {
 269                         FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 270                         activity.getFileOperationsHelper().openFile(file, activity);
 271                     }
 272
 273                 } else {
 274                     // automatic download, preview on finish
 275                     mContainerActivity.startDownloadForPreview(file);
 276                 }
 277
 278             }
 279
 280         } else {
 281             Log_OC.d(TAG, "Null object in ListAdapter!!");
 282         }
 283
 284     }
 285
 286     /**
 287      * {@inheritDoc}
 288      */
 289     @Override
 290     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 291         super.onCreateContextMenu(menu, v, menuInfo);
 292         MenuInflater inflater = getActivity().getMenuInflater();
 293         inflater.inflate(R.menu.file_actions_menu, menu);
 294         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 295         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 296         List<Integer> toHide = new ArrayList<Integer>();
 297         List<Integer> toDisable = new ArrayList<Integer>();
 298
 299         MenuItem item = null;
 300         if (targetFile.isFolder()) {
 301             // contextual menu for folders
 302             toHide.add(R.id.action_open_file_with);
 303             toHide.add(R.id.action_download_file);
 304             toHide.add(R.id.action_cancel_download);
 305             toHide.add(R.id.action_cancel_upload);
 306             toHide.add(R.id.action_sync_file);
 307             toHide.add(R.id.action_see_details);
 308             toHide.add(R.id.action_send_file);
 309             if (    mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile) ||
 310                     mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)           ) {
 311                 toDisable.add(R.id.action_rename_file);
 312                 toDisable.add(R.id.action_remove_file);
 313
 314             }
 315
 316         } else {
 317             // contextual menu for regular files
 318
 319             // new design: 'download' and 'open with' won't be available anymore in context menu
 320             toHide.add(R.id.action_download_file);
 321             toHide.add(R.id.action_open_file_with);
 322
 323             if (targetFile.isDown()) {
 324                 toHide.add(R.id.action_cancel_download);
 325                 toHide.add(R.id.action_cancel_upload);
 326
 327             } else {
 328                 toHide.add(R.id.action_sync_file);
 329             }
 330             if ( mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 331                 toHide.add(R.id.action_cancel_upload);
 332                 toDisable.add(R.id.action_rename_file);
 333                 toDisable.add(R.id.action_remove_file);
 334
 335             } else if ( mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 336                 toHide.add(R.id.action_cancel_download);
 337                 toDisable.add(R.id.action_rename_file);
 338                 toDisable.add(R.id.action_remove_file);
 339
 340             } else {
 341                 toHide.add(R.id.action_cancel_download);
 342                 toHide.add(R.id.action_cancel_upload);
 343             }
 344         }
 345
 346         // Options shareLink
 347         if (!targetFile.isShareByLink()) {
 348             toHide.add(R.id.action_unshare_file);
 349         }
 350
 351         // Send file
 352         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 353         if (!sendEnabled) {
 354             toHide.add(R.id.action_send_file);
 355         }
 356
 357         for (int i : toHide) {
 358             item = menu.findItem(i);
 359             if (item != null) {
 360                 item.setVisible(false);
 361                 item.setEnabled(false);
 362             }
 363         }
 364
 365         for (int i : toDisable) {
 366             item = menu.findItem(i);
 367             if (item != null) {
 368                 item.setEnabled(false);
 369             }
 370         }
 371     }
 372
 373
 374     /**
 375      * {@inhericDoc}
 376      */
 377     @Override
 378     public boolean onContextItemSelected (MenuItem item) {
 379         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 380         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 381         switch (item.getItemId()) {
 382             case R.id.action_share_file: {
 383                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 384                 activity.getFileOperationsHelper().shareFileWithLink(mTargetFile, activity);
 385                 return true;
 386             }
 387             case R.id.action_unshare_file: {
 388                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 389                 activity.getFileOperationsHelper().unshareFileWithLink(mTargetFile, activity);
 390                 return true;
 391             }
 392             case R.id.action_rename_file: {
 393                 String fileName = mTargetFile.getFileName();
 394                 int extensionStart = mTargetFile.isFolder() ? -1 : fileName.lastIndexOf(".");
 395                 int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 396                 EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 397                 dialog.show(getFragmentManager(), EditNameDialog.TAG);
 398                 return true;
 399             }
 400             case R.id.action_remove_file: {
 401                 int messageStringId = R.string.confirmation_remove_alert;
 402                 int posBtnStringId = R.string.confirmation_remove_remote;
 403                 int neuBtnStringId = -1;
 404                 if (mTargetFile.isFolder()) {
 405                     messageStringId = R.string.confirmation_remove_folder_alert;
 406                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 407                     neuBtnStringId = R.string.confirmation_remove_folder_local;
 408                 } else if (mTargetFile.isDown()) {
 409                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 410                     neuBtnStringId = R.string.confirmation_remove_local;
 411                 }
 412                 ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 413                         messageStringId,
 414                         new String[]{mTargetFile.getFileName()},
 415                         posBtnStringId,
 416                         neuBtnStringId,
 417                         R.string.common_cancel);
 418                 confDialog.setOnConfirmationListener(this);
 419                 confDialog.show(getFragmentManager(), FileDetailFragment.FTAG_CONFIRMATION);
 420                 return true;
 421             }
 422             case R.id.action_sync_file: {
 423                 Account account = AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity());
 424                 RemoteOperation operation = new SynchronizeFileOperation(mTargetFile, null, mContainerActivity.getStorageManager(), account, true, getSherlockActivity());
 425                 operation.execute(account, getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 426                 ((FileDisplayActivity) getSherlockActivity()).showLoadingDialog();
 427                 return true;
 428             }
 429             case R.id.action_cancel_download: {
 430                 FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 431                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 432                 if (downloaderBinder != null && downloaderBinder.isDownloading(account, mTargetFile)) {
 433                     downloaderBinder.cancel(account, mTargetFile);
 434                     listDirectory();
 435                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 436                 }
 437                 return true;
 438             }
 439             case R.id.action_cancel_upload: {
 440                 FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 441                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 442                 if (uploaderBinder != null && uploaderBinder.isUploading(account, mTargetFile)) {
 443                     uploaderBinder.cancel(account, mTargetFile);
 444                     listDirectory();
 445                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 446                 }
 447                 return true;
 448             }
 449             case R.id.action_see_details: {
 450                 ((FileFragment.ContainerActivity)getActivity()).showDetails(mTargetFile);
 451                 return true;
 452             }
 453             case R.id.action_send_file: {
 454                 // Obtain the file
 455                 if (!mTargetFile.isDown()) {  // Download the file
 456                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 457                     mContainerActivity.startDownloadForSending(mTargetFile);
 458
 459                 } else {
 460
 461                     FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 462                     activity.getFileOperationsHelper().sendDownloadedFile(mTargetFile, activity);
 463                 }
 464                 return true;
 465             }
 466             default:
 467                 return super.onContextItemSelected(item);
 468         }
 469     }
 470
 471
 472     /**
 473      * Use this to query the {@link OCFile} that is currently
 474      * being displayed by this fragment
 475      * @return The currently viewed OCFile
 476      */
 477     public OCFile getCurrentFile(){
 478         return mFile;
 479     }
 480
 481     /**
 482      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 483      */
 484     public void listDirectory(){
 485         listDirectory(null);
 486     }
 487
 488     /**
 489      * Lists the given directory on the view. When the input parameter is null,
 490      * it will either refresh the last known directory. list the root
 491      * if there never was a directory.
 492      *
 493      * @param directory File to be listed
 494      */
 495     public void listDirectory(OCFile directory) {
 496         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 497         if (storageManager != null) {
 498
 499             // Check input parameters for null
 500             if(directory == null){
 501                 if(mFile != null){
 502                     directory = mFile;
 503                 } else {
 504                     directory = storageManager.getFileByPath("/");
 505                     if (directory == null) return; // no files, wait for sync
 506                 }
 507             }
 508
 509
 510             // If that's not a directory -> List its parent
 511             if(!directory.isFolder()){
 512                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 513                 directory = storageManager.getFileById(directory.getParentId());
 514             }
 515
 516             mAdapter.swapDirectory(directory, storageManager);
 517             if (mFile == null || !mFile.equals(directory)) {
 518                 mList.setSelectionFromTop(0, 0);
 519             }
 520             mFile = directory;
 521         }
 522     }
 523
 524
 525
 526     /**
 527      * Interface to implement by any Activity that includes some instance of FileListFragment
 528      *
 529      * @author David A. Velasco
 530      */
 531     public interface ContainerActivity extends TransferServiceGetter, OnRemoteOperationListener {
 532
 533         /**
 534          * Callback method invoked when a the user browsed into a different folder through the list of files
 535          *
 536          * @param file
 537          */
 538         public void onBrowsedDownTo(OCFile folder);
 539
 540         public void startDownloadForPreview(OCFile file);
 541
 542         public void startMediaPreview(OCFile file, int i, boolean b);
 543
 544         public void startImagePreview(OCFile file);
 545
 546         public void startSyncFolderOperation(OCFile folder);
 547
 548         /**
 549          * Getter for the current DataStorageManager in the container activity
 550          */
 551         public FileDataStorageManager getStorageManager();
 552
 553
 554         /**
 555          * Callback method invoked when a the 'transfer state' of a file changes.
 556          *
 557          * This happens when a download or upload is started or ended for a file.
 558          *
 559          * This method is necessary by now to update the user interface of the double-pane layout in tablets
 560          * because methods {@link FileDownloaderBinder#isDownloading(Account, OCFile)} and {@link FileUploaderBinder#isUploading(Account, OCFile)}
 561          * won't provide the needed response before the method where this is called finishes.
 562          *
 563          * TODO Remove this when the transfer state of a file is kept in the database (other thing TODO)
 564          *
 565          * @param file          OCFile which state changed.
 566          * @param downloading   Flag signaling if the file is now downloading.
 567          * @param uploading     Flag signaling if the file is now uploading.
 568          */
 569         public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading);
 570
 571         void startDownloadForSending(OCFile file);
 572
 573     }
 574
 575
 576     @Override
 577     public void onDismiss(EditNameDialog dialog) {
 578         if (dialog.getResult()) {
 579             String newFilename = dialog.getNewFilename();
 580             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 581             RemoteOperation operation = new RenameFileOperation(mTargetFile,
 582                                                                 AccountUtils.getCurrentOwnCloudAccount(getActivity()),
 583                                                                 newFilename,
 584                                                                 mContainerActivity.getStorageManager());
 585             operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 586             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 587         }
 588     }
 589
 590
 591     @Override
 592     public void onConfirmation(String callerTag) {
 593         if (callerTag.equals(FileDetailFragment.FTAG_CONFIRMATION)) {
 594             if (mContainerActivity.getStorageManager().getFileById(mTargetFile.getFileId()) != null) {
 595                 RemoteOperation operation = new RemoveFileOperation( mTargetFile,
 596                                                                     true,
 597                                                                     mContainerActivity.getStorageManager());
 598                 operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 599
 600                 ((FileDisplayActivity) getActivity()).showLoadingDialog();
 601             }
 602         }
 603     }
 604
 605     @Override
 606     public void onNeutral(String callerTag) {
 607         mContainerActivity.getStorageManager().removeFile(mTargetFile, false, true);    // TODO perform in background task / new thread
 608         listDirectory();
 609         mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 610     }
 611
 612     @Override
 613     public void onCancel(String callerTag) {
 614         Log_OC.d(TAG, "REMOVAL CANCELED");
 615     }
 616
 617
 618 }