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
 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         mAdapter = new FileListListAdapter(getActivity(), mContainerActivity, mFile);
 128
 129         setListAdapter(mAdapter);
 130
 131         registerForContextMenu(getListView());
 132         getListView().setOnCreateContextMenuListener(this);
 133
 134         mHandler = new Handler();
 135
 136     }
 137
 138     /**
 139      * Saves the current listed folder.
 140      */
 141     @Override
 142     public void onSaveInstanceState (Bundle outState) {
 143         super.onSaveInstanceState(outState);
 144         outState.putParcelable(EXTRA_FILE, mFile);
 145         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 146         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 147         outState.putIntegerArrayList(KEY_TOPS, mTops);
 148         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 149     }
 150
 151     /**
 152      * Call this, when the user presses the up button.
 153      *
 154      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 155      * it continues browsing up until finding an existing folders.
 156      *
 157      * return       Count of folder levels browsed up.
 158      */
 159     public int onBrowseUp() {
 160         OCFile parentDir = null;
 161         int moveCount = 0;
 162
 163         if(mFile != null){
 164             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 165
 166             String parentPath = null;
 167             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 168                 parentPath = new File(mFile.getRemotePath()).getParent();
 169                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 170                 parentDir = storageManager.getFileByPath(parentPath);
 171                 moveCount++;
 172             } else {
 173                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 174             }
 175             while (parentDir == null) {
 176                 parentPath = new File(parentPath).getParent();
 177                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 178                 parentDir = storageManager.getFileByPath(parentPath);
 179                 moveCount++;
 180             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 181             mFile = parentDir;
 182         }
 183
 184         if (mFile != null) {
 185             listDirectory(mFile);
 186
 187             mContainerActivity.startSyncFolderOperation(mFile);
 188
 189             // restore index and top position
 190             restoreIndexAndTopPosition();
 191
 192         }   // else - should never happen now
 193
 194         return moveCount;
 195     }
 196
 197     /*
 198      * Restore index and position
 199      */
 200     private void restoreIndexAndTopPosition() {
 201         if (mIndexes.size() > 0) {
 202             // needs to be checked; not every browse-up had a browse-down before
 203
 204             int index = mIndexes.remove(mIndexes.size() - 1);
 205
 206             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 207
 208             int top = mTops.remove(mTops.size() - 1);
 209
 210             mList.setSelectionFromTop(firstPosition, top);
 211
 212             // Move the scroll if the selection is not visible
 213             int indexPosition = mHeightCell*index;
 214             int height = mList.getHeight();
 215
 216             if (indexPosition > height) {
 217                 if (android.os.Build.VERSION.SDK_INT >= 11)
 218                 {
 219                     mList.smoothScrollToPosition(index);
 220                 }
 221                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 222                 {
 223                     mList.setSelectionFromTop(index, 0);
 224                 }
 225
 226             }
 227         }
 228     }
 229
 230     /*
 231      * Save index and top position
 232      */
 233     private void saveIndexAndTopPosition(int index) {
 234
 235         mIndexes.add(index);
 236
 237         int firstPosition = mList.getFirstVisiblePosition();
 238         mFirstPositions.add(firstPosition);
 239
 240         View view = mList.getChildAt(0);
 241         int top = (view == null) ? 0 : view.getTop() ;
 242
 243         mTops.add(top);
 244
 245         // Save the height of a cell
 246         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 247     }
 248
 249     @Override
 250     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 251         OCFile file = (OCFile) mAdapter.getItem(position);
 252         if (file != null) {
 253             if (file.isFolder()) {
 254                 // update state and view of this fragment
 255                 listDirectory(file);
 256                 // then, notify parent activity to let it update its state and view, and other fragments
 257                 mContainerActivity.onBrowsedDownTo(file);
 258                 // save index and top position
 259                 saveIndexAndTopPosition(position);
 260
 261             } else { /// Click on a file
 262                 if (PreviewImageFragment.canBePreviewed(file)) {
 263                     // preview image - it handles the download, if needed
 264                     mContainerActivity.startImagePreview(file);
 265
 266                 } else if (file.isDown()) {
 267                     if (PreviewMediaFragment.canBePreviewed(file)) {
 268                         // media preview
 269                         mContainerActivity.startMediaPreview(file, 0, true);
 270                     } else {
 271                         FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 272                         activity.getFileOperationsHelper().openFile(file, activity);
 273                     }
 274
 275                 } else {
 276                     // automatic download, preview on finish
 277                     mContainerActivity.startDownloadForPreview(file);
 278                 }
 279
 280             }
 281
 282         } else {
 283             Log_OC.d(TAG, "Null object in ListAdapter!!");
 284         }
 285
 286     }
 287
 288     /**
 289      * {@inheritDoc}
 290      */
 291     @Override
 292     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 293         super.onCreateContextMenu(menu, v, menuInfo);
 294         MenuInflater inflater = getActivity().getMenuInflater();
 295         inflater.inflate(R.menu.file_actions_menu, menu);
 296         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 297         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 298         List<Integer> toHide = new ArrayList<Integer>();
 299         List<Integer> toDisable = new ArrayList<Integer>();
 300
 301         MenuItem item = null;
 302         if (targetFile.isFolder()) {
 303             // contextual menu for folders
 304             toHide.add(R.id.action_open_file_with);
 305             toHide.add(R.id.action_download_file);
 306             toHide.add(R.id.action_cancel_download);
 307             toHide.add(R.id.action_cancel_upload);
 308             toHide.add(R.id.action_sync_file);
 309             toHide.add(R.id.action_see_details);
 310             toHide.add(R.id.action_send_file);
 311             if (    mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile) ||
 312                     mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)           ) {
 313                 toDisable.add(R.id.action_rename_file);
 314                 toDisable.add(R.id.action_remove_file);
 315
 316             }
 317
 318         } else {
 319             // contextual menu for regular files
 320
 321             // new design: 'download' and 'open with' won't be available anymore in context menu
 322             toHide.add(R.id.action_download_file);
 323             toHide.add(R.id.action_open_file_with);
 324
 325             if (targetFile.isDown()) {
 326                 toHide.add(R.id.action_cancel_download);
 327                 toHide.add(R.id.action_cancel_upload);
 328
 329             } else {
 330                 toHide.add(R.id.action_sync_file);
 331             }
 332             if ( mContainerActivity.getFileDownloaderBinder().isDownloading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 333                 toHide.add(R.id.action_cancel_upload);
 334                 toDisable.add(R.id.action_rename_file);
 335                 toDisable.add(R.id.action_remove_file);
 336
 337             } else if ( mContainerActivity.getFileUploaderBinder().isUploading(AccountUtils.getCurrentOwnCloudAccount(getActivity()), targetFile)) {
 338                 toHide.add(R.id.action_cancel_download);
 339                 toDisable.add(R.id.action_rename_file);
 340                 toDisable.add(R.id.action_remove_file);
 341
 342             } else {
 343                 toHide.add(R.id.action_cancel_download);
 344                 toHide.add(R.id.action_cancel_upload);
 345             }
 346         }
 347
 348         // Options shareLink
 349         if (!targetFile.isShareByLink()) {
 350             toHide.add(R.id.action_unshare_file);
 351         }
 352
 353         // Send file
 354         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 355         if (!sendEnabled) {
 356             toHide.add(R.id.action_send_file);
 357         }
 358
 359         for (int i : toHide) {
 360             item = menu.findItem(i);
 361             if (item != null) {
 362                 item.setVisible(false);
 363                 item.setEnabled(false);
 364             }
 365         }
 366
 367         for (int i : toDisable) {
 368             item = menu.findItem(i);
 369             if (item != null) {
 370                 item.setEnabled(false);
 371             }
 372         }
 373     }
 374
 375
 376     /**
 377      * {@inhericDoc}
 378      */
 379     @Override
 380     public boolean onContextItemSelected (MenuItem item) {
 381         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 382         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 383         switch (item.getItemId()) {
 384             case R.id.action_share_file: {
 385                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 386                 activity.getFileOperationsHelper().shareFileWithLink(mTargetFile, activity);
 387                 return true;
 388             }
 389             case R.id.action_unshare_file: {
 390                 FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 391                 activity.getFileOperationsHelper().unshareFileWithLink(mTargetFile, activity);
 392                 return true;
 393             }
 394             case R.id.action_rename_file: {
 395                 String fileName = mTargetFile.getFileName();
 396                 int extensionStart = mTargetFile.isFolder() ? -1 : fileName.lastIndexOf(".");
 397                 int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 398                 EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 399                 dialog.show(getFragmentManager(), EditNameDialog.TAG);
 400                 return true;
 401             }
 402             case R.id.action_remove_file: {
 403                 int messageStringId = R.string.confirmation_remove_alert;
 404                 int posBtnStringId = R.string.confirmation_remove_remote;
 405                 int neuBtnStringId = -1;
 406                 if (mTargetFile.isFolder()) {
 407                     messageStringId = R.string.confirmation_remove_folder_alert;
 408                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 409                     neuBtnStringId = R.string.confirmation_remove_folder_local;
 410                 } else if (mTargetFile.isDown()) {
 411                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 412                     neuBtnStringId = R.string.confirmation_remove_local;
 413                 }
 414                 ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 415                         messageStringId,
 416                         new String[]{mTargetFile.getFileName()},
 417                         posBtnStringId,
 418                         neuBtnStringId,
 419                         R.string.common_cancel);
 420                 confDialog.setOnConfirmationListener(this);
 421                 confDialog.show(getFragmentManager(), FileDetailFragment.FTAG_CONFIRMATION);
 422                 return true;
 423             }
 424             case R.id.action_sync_file: {
 425                 Account account = AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity());
 426                 RemoteOperation operation = new SynchronizeFileOperation(mTargetFile, null, mContainerActivity.getStorageManager(), account, true, getSherlockActivity());
 427                 operation.execute(account, getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 428                 ((FileDisplayActivity) getSherlockActivity()).showLoadingDialog();
 429                 return true;
 430             }
 431             case R.id.action_cancel_download: {
 432                 FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 433                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 434                 if (downloaderBinder != null && downloaderBinder.isDownloading(account, mTargetFile)) {
 435                     downloaderBinder.cancel(account, mTargetFile);
 436                     listDirectory();
 437                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 438                 }
 439                 return true;
 440             }
 441             case R.id.action_cancel_upload: {
 442                 FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 443                 Account account = AccountUtils.getCurrentOwnCloudAccount(getActivity());
 444                 if (uploaderBinder != null && uploaderBinder.isUploading(account, mTargetFile)) {
 445                     uploaderBinder.cancel(account, mTargetFile);
 446                     listDirectory();
 447                     mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 448                 }
 449                 return true;
 450             }
 451             case R.id.action_see_details: {
 452                 ((FileFragment.ContainerActivity)getActivity()).showDetails(mTargetFile);
 453                 return true;
 454             }
 455             case R.id.action_send_file: {
 456                 // Obtain the file
 457                 if (!mTargetFile.isDown()) {  // Download the file
 458                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 459                     mContainerActivity.startDownloadForSending(mTargetFile);
 460
 461                 } else {
 462
 463                     FileDisplayActivity activity = (FileDisplayActivity) getSherlockActivity();
 464                     activity.getFileOperationsHelper().sendDownloadedFile(mTargetFile, activity);
 465                 }
 466                 return true;
 467             }
 468             default:
 469                 return super.onContextItemSelected(item);
 470         }
 471     }
 472
 473
 474     /**
 475      * Use this to query the {@link OCFile} that is currently
 476      * being displayed by this fragment
 477      * @return The currently viewed OCFile
 478      */
 479     public OCFile getCurrentFile(){
 480         return mFile;
 481     }
 482
 483     /**
 484      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 485      */
 486     public void listDirectory(){
 487         listDirectory(null);
 488     }
 489
 490     /**
 491      * Lists the given directory on the view. When the input parameter is null,
 492      * it will either refresh the last known directory. list the root
 493      * if there never was a directory.
 494      *
 495      * @param directory File to be listed
 496      */
 497     public void listDirectory(OCFile directory) {
 498         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 499         if (storageManager != null) {
 500
 501             // Check input parameters for null
 502             if(directory == null){
 503                 if(mFile != null){
 504                     directory = mFile;
 505                 } else {
 506                     directory = storageManager.getFileByPath("/");
 507                     if (directory == null) return; // no files, wait for sync
 508                 }
 509             }
 510
 511
 512             // If that's not a directory -> List its parent
 513             if(!directory.isFolder()){
 514                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 515                 directory = storageManager.getFileById(directory.getParentId());
 516             }
 517
 518             mAdapter.swapDirectory(directory, storageManager);
 519             if (mFile == null || !mFile.equals(directory)) {
 520                 mList.setSelectionFromTop(0, 0);
 521             }
 522             mFile = directory;
 523         }
 524     }
 525
 526
 527
 528     /**
 529      * Interface to implement by any Activity that includes some instance of FileListFragment
 530      *
 531      * @author David A. Velasco
 532      */
 533     public interface ContainerActivity extends TransferServiceGetter, OnRemoteOperationListener {
 534
 535         /**
 536          * Callback method invoked when a the user browsed into a different folder through the list of files
 537          *
 538          * @param file
 539          */
 540         public void onBrowsedDownTo(OCFile folder);
 541
 542         public void startDownloadForPreview(OCFile file);
 543
 544         public void startMediaPreview(OCFile file, int i, boolean b);
 545
 546         public void startImagePreview(OCFile file);
 547
 548         public void startSyncFolderOperation(OCFile folder);
 549
 550         /**
 551          * Getter for the current DataStorageManager in the container activity
 552          */
 553         public FileDataStorageManager getStorageManager();
 554
 555
 556         /**
 557          * Callback method invoked when a the 'transfer state' of a file changes.
 558          *
 559          * This happens when a download or upload is started or ended for a file.
 560          *
 561          * This method is necessary by now to update the user interface of the double-pane layout in tablets
 562          * because methods {@link FileDownloaderBinder#isDownloading(Account, OCFile)} and {@link FileUploaderBinder#isUploading(Account, OCFile)}
 563          * won't provide the needed response before the method where this is called finishes.
 564          *
 565          * TODO Remove this when the transfer state of a file is kept in the database (other thing TODO)
 566          *
 567          * @param file          OCFile which state changed.
 568          * @param downloading   Flag signaling if the file is now downloading.
 569          * @param uploading     Flag signaling if the file is now uploading.
 570          */
 571         public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading);
 572
 573         void startDownloadForSending(OCFile file);
 574
 575     }
 576
 577
 578     @Override
 579     public void onDismiss(EditNameDialog dialog) {
 580         if (dialog.getResult()) {
 581             String newFilename = dialog.getNewFilename();
 582             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 583             RemoteOperation operation = new RenameFileOperation(mTargetFile,
 584                                                                 AccountUtils.getCurrentOwnCloudAccount(getActivity()),
 585                                                                 newFilename,
 586                                                                 mContainerActivity.getStorageManager());
 587             operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 588             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 589         }
 590     }
 591
 592
 593     @Override
 594     public void onConfirmation(String callerTag) {
 595         if (callerTag.equals(FileDetailFragment.FTAG_CONFIRMATION)) {
 596             if (mContainerActivity.getStorageManager().getFileById(mTargetFile.getFileId()) != null) {
 597                 RemoteOperation operation = new RemoveFileOperation( mTargetFile,
 598                                                                     true,
 599                                                                     mContainerActivity.getStorageManager());
 600                 operation.execute(AccountUtils.getCurrentOwnCloudAccount(getSherlockActivity()), getSherlockActivity(), mContainerActivity, mHandler, getSherlockActivity());
 601
 602                 ((FileDisplayActivity) getActivity()).showLoadingDialog();
 603             }
 604         }
 605     }
 606
 607     @Override
 608     public void onNeutral(String callerTag) {
 609         mContainerActivity.getStorageManager().removeFile(mTargetFile, false, true);    // TODO perform in background task / new thread
 610         listDirectory();
 611         mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 612     }
 613
 614     @Override
 615     public void onCancel(String callerTag) {
 616         Log_OC.d(TAG, "REMOVAL CANCELED");
 617     }
 618
 619
 620 }