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         int index = mIndexes.get(mIndexes.size() - 1);
 200         mIndexes.remove(mIndexes.size() - 1);
 201
 202         int firstPosition = mFirstPositions.get(mFirstPositions.size() - 1);
 203         mFirstPositions.remove(mFirstPositions.size() -1);
 204
 205         int top = mTops.get(mTops.size() - 1);
 206         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      * Save index and top position
 229      */
 230     private void saveIndexAndTopPosition(int index) {
 231
 232         mIndexes.add(index);
 233
 234         int firstPosition = mList.getFirstVisiblePosition();
 235         mFirstPositions.add(firstPosition);
 236
 237         View view = mList.getChildAt(0);
 238         int top = (view == null) ? 0 : view.getTop() ;
 239
 240         mTops.add(top);
 241
 242         // Save the height of a cell
 243         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 244     }
 245
 246     @Override
 247     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 248         OCFile file = (OCFile) mAdapter.getItem(position);
 249         if (file != null) {
 250             if (file.isFolder()) {
 251                 // update state and view of this fragment
 252                 listDirectory(file);
 253                 // then, notify parent activity to let it update its state and view, and other fragments
 254                 mContainerActivity.onBrowsedDownTo(file);
 255                 // save index and top position
 256                 saveIndexAndTopPosition(position);
 257
 258             } else { /// Click on a file
 259                 if (PreviewImageFragment.canBePreviewed(file)) {
 260                     // preview image - it handles the download, if needed
 261                     mContainerActivity.startImagePreview(file);
 262
 263                 } else if (file.isDown()) {
 264                     if (PreviewMediaFragment.canBePreviewed(file)) {
 265                         // media preview
 266                         mContainerActivity.startMediaPreview(file, 0, true);
 267                     } else {
 268                         FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 269                         activity.getFileOperationsHelper().openFile(file, activity);
 270                     }
 271
 272                 } else {
 273                     // automatic download, preview on finish
 274                     mContainerActivity.startDownloadForPreview(file);
 275                 }
 276
 277             }
 278
 279         } else {
 280             Log_OC.d(TAG, "Null object in ListAdapter!!");
 281         }
 282
 283     }
 284
 285     /**
 286      * {@inheritDoc}
 287      */
 288     @Override
 289     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 290         super.onCreateContextMenu(menu, v, menuInfo);
 291         MenuInflater inflater = getActivity().getMenuInflater();
 292         inflater.inflate(R.menu.file_actions_menu, menu);
 293         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 294         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 295         List<Integer> toHide = new ArrayList<Integer>();
 296         List<Integer> toDisable = new ArrayList<Integer>();
 297
 298         MenuItem item = null;
 299         if (targetFile.isFolder()) {
 300             // contextual menu for folders
 301             toHide.add(R.id.action_open_file_with);
 302             toHide.add(R.id.action_download_file);
 303             toHide.add(R.id.action_cancel_download);
 304             toHide.add(R.id.action_cancel_upload);
 305             toHide.add(R.id.action_sync_file);
 306             toHide.add(R.id.action_see_details);
 307             toHide.add(R.id.action_send_file);
 308             if (    mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile) ||
 309                     mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)           ) {
 310                 toDisable.add(R.id.action_rename_file);
 311                 toDisable.add(R.id.action_remove_file);
 312
 313             }
 314
 315         } else {
 316             // contextual menu for regular files
 317
 318             // new design: 'download' and 'open with' won't be available anymore in context menu
 319             toHide.add(R.id.action_download_file);
 320             toHide.add(R.id.action_open_file_with);
 321
 322             if (targetFile.isDown()) {
 323                 toHide.add(R.id.action_cancel_download);
 324                 toHide.add(R.id.action_cancel_upload);
 325
 326             } else {
 327                 toHide.add(R.id.action_sync_file);
 328             }
 329             if ( mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 330                 toHide.add(R.id.action_cancel_upload);
 331                 toDisable.add(R.id.action_rename_file);
 332                 toDisable.add(R.id.action_remove_file);
 333
 334             } else if ( mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 335                 toHide.add(R.id.action_cancel_download);
 336                 toDisable.add(R.id.action_rename_file);
 337                 toDisable.add(R.id.action_remove_file);
 338
 339             } else {
 340                 toHide.add(R.id.action_cancel_download);
 341                 toHide.add(R.id.action_cancel_upload);
 342             }
 343         }
 344
 345         // Options shareLink
 346         if (!targetFile.isShareByLink()) {
 347             toHide.add(R.id.action_unshare_file);
 348         }
 349
 350         // Send file
 351         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 352         if (!sendEnabled) {
 353             toHide.add(R.id.action_send_file);
 354         }
 355
 356         for (int i : toHide) {
 357             item = menu.findItem(i);
 358             if (item != null) {
 359                 item.setVisible(false);
 360                 item.setEnabled(false);
 361             }
 362         }
 363
 364         for (int i : toDisable) {
 365             item = menu.findItem(i);
 366             if (item != null) {
 367                 item.setEnabled(false);
 368             }
 369         }
 370     }
 371
 372
 373     /**
 374      * {@inhericDoc}
 375      */
 376     @Override
 377     public boolean onContextItemSelected (MenuItem item) {
 378         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 379         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 380         switch (item.getItemId()) {
 381             case R.id.action_share_file: {
 382                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 383                 activity.getFileOperationsHelper().shareFileWithLink(mTargetFile, activity);
 384                 return true;
 385             }
 386             case R.id.action_unshare_file: {
 387                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 388                 activity.getFileOperationsHelper().unshareFileWithLink(mTargetFile, activity);
 389                 return true;
 390             }
 391             case R.id.action_rename_file: {
 392                 String fileName = mTargetFile.getFileName();
 393                 int extensionStart = mTargetFile.isFolder() ? -1 : fileName.lastIndexOf(".");
 394                 int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 395                 EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 396                 dialog.show(getFragmentManager(), EditNameDialog.TAG);
 397                 return true;
 398             }
 399             case R.id.action_remove_file: {
 400                 int messageStringId = R.string.confirmation_remove_alert;
 401                 int posBtnStringId = R.string.confirmation_remove_remote;
 402                 int neuBtnStringId = -1;
 403                 if (mTargetFile.isFolder()) {
 404                     messageStringId = R.string.confirmation_remove_folder_alert;
 405                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 406                     neuBtnStringId = R.string.confirmation_remove_folder_local;
 407                 } else if (mTargetFile.isDown()) {
 408                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 409                     neuBtnStringId = R.string.confirmation_remove_local;
 410                 }
 411                 ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 412                         messageStringId,
 413                         new String[]{mTargetFile.getFileName()},
 414                         posBtnStringId,
 415                         neuBtnStringId,
 416                         R.string.common_cancel);
 417                 confDialog.setOnConfirmationListener(this);
 418                 confDialog.show(getFragmentManager(), FileDetailFragment.FTAG_CONFIRMATION);
 419                 return true;
 420             }
 421             case R.id.action_sync_file: {
 422                 Account account = AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity());
 423                 RemoteOperation operation = new SynchronizeFileOperation(mTargetFile, null, mContainerActivity.getStorageManager(), account, true, getSherlockActivity());
 424                 operation.execute(account, getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 425                 ((FileDisplayActivity) getSherlockActivity()).showLoadingDialog();
 426                 return true;
 427             }
 428             case R.id.action_cancel_download: {
 429                 FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 430                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 431                 if (downloaderBinder != null && downloaderBinder.isDownloading(account, mTargetFile)) {
 432                     downloaderBinder.cancel(account, mTargetFile);
 433                     listDirectory();
 434                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 435                 }
 436                 return true;
 437             }
 438             case R.id.action_cancel_upload: {
 439                 FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 440                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 441                 if (uploaderBinder != null && uploaderBinder.isUploading(account, mTargetFile)) {
 442                     uploaderBinder.cancel(account, mTargetFile);
 443                     listDirectory();
 444                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 445                 }
 446                 return true;
 447             }
 448             case R.id.action_see_details: {
 449                 ((FileFragment.ContainerActivity)getActivity()).showDetails(mTargetFile);
 450                 return true;
 451             }
 452             case R.id.action_send_file: {
 453                 // Obtain the file
 454                 if (!mTargetFile.isDown()) {  // Download the file
 455                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 456                     mContainerActivity.startDownloadForSending(mTargetFile);
 457
 458                 } else {
 459
 460                     FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 461                     activity.getFileOperationsHelper().sendDownloadedFile(mTargetFile, activity);
 462                 }
 463                 return true;
 464             }
 465             default:
 466                 return super.onContextItemSelected(item);
 467         }
 468     }
 469
 470
 471     /**
 472      * Use this to query the {@link OCFile} that is currently
 473      * being displayed by this fragment
 474      * @return The currently viewed OCFile
 475      */
 476     public OCFile getCurrentFile(){
 477         return mFile;
 478     }
 479
 480     /**
 481      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 482      */
 483     public void listDirectory(){
 484         listDirectory(null);
 485     }
 486
 487     /**
 488      * Lists the given directory on the view. When the input parameter is null,
 489      * it will either refresh the last known directory. list the root
 490      * if there never was a directory.
 491      *
 492      * @param directory File to be listed
 493      */
 494     public void listDirectory(OCFile directory) {
 495         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 496         if (storageManager != null) {
 497
 498             // Check input parameters for null
 499             if(directory == null){
 500                 if(mFile != null){
 501                     directory = mFile;
 502                 } else {
 503                     directory = storageManager.getFileByPath("/");
 504                     if (directory == null) return; // no files, wait for sync
 505                 }
 506             }
 507
 508
 509             // If that's not a directory -> List its parent
 510             if(!directory.isFolder()){
 511                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 512                 directory = storageManager.getFileById(directory.getParentId());
 513             }
 514
 515             mAdapter.swapDirectory(directory, storageManager);
 516             if (mFile == null || !mFile.equals(directory)) {
 517                 mList.setSelectionFromTop(0, 0);
 518             }
 519             mFile = directory;
 520         }
 521     }
 522
 523
 524
 525     /**
 526      * Interface to implement by any Activity that includes some instance of FileListFragment
 527      *
 528      * @author David A. Velasco
 529      */
 530     public interface ContainerActivity extends TransferServiceGetter, OnRemoteOperationListener {
 531
 532         /**
 533          * Callback method invoked when a the user browsed into a different folder through the list of files
 534          *
 535          * @param file
 536          */
 537         public void onBrowsedDownTo(OCFile folder);
 538
 539         public void startDownloadForPreview(OCFile file);
 540
 541         public void startMediaPreview(OCFile file, int i, boolean b);
 542
 543         public void startImagePreview(OCFile file);
 544
 545         public void startSyncFolderOperation(OCFile folder);
 546
 547         /**
 548          * Getter for the current DataStorageManager in the container activity
 549          */
 550         public FileDataStorageManager getStorageManager();
 551
 552
 553         /**
 554          * Callback method invoked when a the 'transfer state' of a file changes.
 555          *
 556          * This happens when a download or upload is started or ended for a file.
 557          *
 558          * This method is necessary by now to update the user interface of the double-pane layout in tablets
 559          * because methods {@link FileDownloaderBinder#isDownloading(Account, OCFile)} and {@link FileUploaderBinder#isUploading(Account, OCFile)}
 560          * won't provide the needed response before the method where this is called finishes.
 561          *
 562          * TODO Remove this when the transfer state of a file is kept in the database (other thing TODO)
 563          *
 564          * @param file          OCFile which state changed.
 565          * @param downloading   Flag signaling if the file is now downloading.
 566          * @param uploading     Flag signaling if the file is now uploading.
 567          */
 568         public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading);
 569
 570         void startDownloadForSending(OCFile file);
 571
 572     }
 573
 574
 575     @Override
 576     public void onDismiss(EditNameDialog dialog) {
 577         if (dialog.getResult()) {
 578             String newFilename = dialog.getNewFilename();
 579             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 580             RemoteOperation operation = new RenameFileOperation(mTargetFile,
 581                                                                 AccountUtils.getCurrentOwnCloudAccount(getActivity()),
 582                                                                 newFilename,
 583                                                                 mContainerActivity.getStorageManager());
 584             operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 585             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 586         }
 587     }
 588
 589
 590     @Override
 591     public void onConfirmation(String callerTag) {
 592         if (callerTag.equals(FileDetailFragment.FTAG_CONFIRMATION)) {
 593             if (mContainerActivity.getStorageManager().getFileById(mTargetFile.getFileId()) != null) {
 594                 RemoteOperation operation = new RemoveFileOperation( mTargetFile,
 595                                                                     true,
 596                                                                     mContainerActivity.getStorageManager());
 597                 operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 598
 599                 ((FileDisplayActivity) getActivity()).showLoadingDialog();
 600             }
 601         }
 602     }
 603
 604     @Override
 605     public void onNeutral(String callerTag) {
 606         mContainerActivity.getStorageManager().removeFile(mTargetFile, false, true);    // TODO perform in background task / new thread
 607         listDirectory();
 608         mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 609     }
 610
 611     @Override
 612     public void onCancel(String callerTag) {
 613         Log_OC.d(TAG, "REMOVAL CANCELED");
 614     }
 615
 616
 617 }