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

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author Bartek Przybylski
   5  *   @author masensio
   6  *   @author David A. Velasco
   7  *   Copyright (C) 2011  Bartek Przybylski
   8  *   Copyright (C) 2015 ownCloud Inc.
   9  *
  10  *   This program is free software: you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License version 2,
  12  *   as published by the Free Software Foundation.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  *
  22  */
  23 package com.owncloud.android.ui.fragment;
  24
  25 import android.app.Activity;
  26 import android.content.Intent;
  27 import android.content.SharedPreferences;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.preference.PreferenceManager;
  31 import android.support.v4.widget.SwipeRefreshLayout;
  32 import android.view.ContextMenu;
  33 import android.view.Menu;
  34 import android.view.MenuInflater;
  35 import android.view.MenuItem;
  36 import android.view.View;
  37 import android.widget.AdapterView;
  38 import android.widget.AdapterView.AdapterContextMenuInfo;
  39 import android.widget.PopupMenu;
  40 import android.widget.TextView;
  41 import android.widget.Toast;
  42
  43 import com.owncloud.android.R;
  44 import com.owncloud.android.authentication.AccountUtils;
  45 import com.owncloud.android.datamodel.FileDataStorageManager;
  46 import com.owncloud.android.datamodel.OCFile;
  47 import com.owncloud.android.files.FileMenuFilter;
  48 import com.owncloud.android.lib.common.utils.Log_OC;
  49 import com.owncloud.android.lib.resources.status.OwnCloudVersion;
  50 import com.owncloud.android.ui.activity.FileActivity;
  51 import com.owncloud.android.ui.activity.FileDisplayActivity;
  52 import com.owncloud.android.ui.activity.FolderPickerActivity;
  53 import com.owncloud.android.ui.activity.OnEnforceableRefreshListener;
  54 import com.owncloud.android.ui.activity.UploadFilesActivity;
  55 import com.owncloud.android.ui.adapter.FileListListAdapter;
  56 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  57 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  58 import com.owncloud.android.ui.dialog.FileActionsDialogFragment;
  59 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
  60 import com.owncloud.android.ui.dialog.RenameFileDialogFragment;
  61 import com.owncloud.android.ui.dialog.UploadSourceDialogFragment;
  62 import com.owncloud.android.ui.preview.PreviewImageFragment;
  63 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  64 import com.owncloud.android.utils.FileStorageUtils;
  65 import com.owncloud.android.ui.preview.PreviewTextFragment;
  66
  67 import java.io.File;
  68
  69 /**
  70  * A Fragment that lists all files and folders in a given path.
  71  *
  72  * TODO refactor to get rid of direct dependency on FileDisplayActivity
  73  */
  74 public class OCFileListFragment extends ExtendedListFragment implements FileActionsDialogFragment.FileActionsDialogFragmentListener {
  75
  76     private static final String TAG = OCFileListFragment.class.getSimpleName();
  77
  78     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ?
  79             OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  80
  81     public final static String ARG_JUST_FOLDERS = MY_PACKAGE + ".JUST_FOLDERS";
  82     public final static String ARG_ALLOW_CONTEXTUAL_ACTIONS = MY_PACKAGE + ".ALLOW_CONTEXTUAL";
  83     public final static String ARG_HIDE_FAB = MY_PACKAGE + ".HIDE_FAB";
  84
  85     private static final String KEY_FILE = MY_PACKAGE + ".extra.FILE";
  86     private static final String KEY_FAB_EVER_CLICKED = "FAB_EVER_CLICKED";
  87
  88     private static String DIALOG_CREATE_FOLDER = "DIALOG_CREATE_FOLDER";
  89
  90     private FileFragment.ContainerActivity mContainerActivity;
  91
  92     private OCFile mFile = null;
  93     private FileListListAdapter mAdapter;
  94     private boolean mJustFolders;
  95
  96     private OCFile mTargetFile;
  97
  98     private boolean miniFabClicked = false;
  99
 100     /**
 101      * {@inheritDoc}
 102      */
 103     @Override
 104     public void onAttach(Activity activity) {
 105         super.onAttach(activity);
 106         Log_OC.e(TAG, "onAttach");
 107         try {
 108             mContainerActivity = (FileFragment.ContainerActivity) activity;
 109
 110         } catch (ClassCastException e) {
 111             throw new ClassCastException(activity.toString() + " must implement " +
 112                     FileFragment.ContainerActivity.class.getSimpleName());
 113         }
 114         try {
 115             setOnRefreshListener((OnEnforceableRefreshListener) activity);
 116
 117         } catch (ClassCastException e) {
 118             throw new ClassCastException(activity.toString() + " must implement " +
 119                     SwipeRefreshLayout.OnRefreshListener.class.getSimpleName());
 120         }
 121     }
 122
 123
 124     @Override
 125     public void onDetach() {
 126         setOnRefreshListener(null);
 127         mContainerActivity = null;
 128         super.onDetach();
 129     }
 130
 131     /**
 132      * {@inheritDoc}
 133      */
 134     @Override
 135     public void onActivityCreated(Bundle savedInstanceState) {
 136         super.onActivityCreated(savedInstanceState);
 137         Log_OC.e(TAG, "onActivityCreated() start");
 138
 139         if (savedInstanceState != null) {
 140             mFile = savedInstanceState.getParcelable(KEY_FILE);
 141         }
 142
 143         if (mJustFolders) {
 144             setFooterEnabled(false);
 145         } else {
 146             setFooterEnabled(true);
 147         }
 148
 149         Bundle args = getArguments();
 150         mJustFolders = (args == null) ? false : args.getBoolean(ARG_JUST_FOLDERS, false);
 151         mAdapter = new FileListListAdapter(
 152                 mJustFolders,
 153                 getActivity(),
 154                 mContainerActivity
 155         );
 156         setListAdapter(mAdapter);
 157
 158         registerLongClickListener();
 159
 160         boolean hideFab = (args != null) && args.getBoolean(ARG_HIDE_FAB, false);
 161         if (hideFab) {
 162             setFabEnabled(false);
 163         } else {
 164             setFabEnabled(true);
 165             registerFabListeners();
 166
 167             // detect if a mini FAB has ever been clicked
 168             final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
 169             if(prefs.getLong(KEY_FAB_EVER_CLICKED, 0) > 0) {
 170                 miniFabClicked = true;
 171             }
 172
 173             // add labels to the min FABs when none of them has ever been clicked on
 174             if(!miniFabClicked) {
 175                 setFabLabels();
 176             } else {
 177                 removeFabLabels();
 178             }
 179         }
 180   }
 181
 182     /**
 183      * adds labels to all mini FABs.
 184      */
 185     private void setFabLabels() {
 186         getFabUpload().setTitle(getResources().getString(R.string.actionbar_upload));
 187         getFabMkdir().setTitle(getResources().getString(R.string.actionbar_mkdir));
 188         getFabUploadFromApp().setTitle(getResources().getString(R.string.actionbar_upload_from_apps));
 189     }
 190
 191     /**
 192      * registers all listeners on all mini FABs.
 193      */
 194     private void registerFabListeners() {
 195         registerFabUploadListeners();
 196         registerFabMkDirListeners();
 197         registerFabUploadFromAppListeners();
 198     }
 199
 200     /**
 201      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 202      * on the Upload mini FAB for the linked action and {@link Toast} showing the underlying action.
 203      */
 204     private void registerFabUploadListeners() {
 205         getFabUpload().setOnClickListener(new View.OnClickListener() {
 206             @Override
 207             public void onClick(View v) {
 208                 Intent action = new Intent(getActivity(), UploadFilesActivity.class);
 209                 action.putExtra(
 210                         UploadFilesActivity.EXTRA_ACCOUNT,
 211                         ((FileActivity) getActivity()).getAccount()
 212                 );
 213                 getActivity().startActivityForResult(action, UploadSourceDialogFragment.ACTION_SELECT_MULTIPLE_FILES);
 214                 getFabMain().collapse();
 215                 recordMiniFabClick();
 216             }
 217         });
 218
 219         getFabUpload().setOnLongClickListener(new View.OnLongClickListener() {
 220             @Override
 221             public boolean onLongClick(View v) {
 222                 Toast.makeText(getActivity(), R.string.actionbar_upload, Toast.LENGTH_SHORT).show();
 223                 return true;
 224             }
 225         });
 226     }
 227
 228     /**
 229      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 230      * on the 'Create Dir' mini FAB for the linked action and {@link Toast} showing the underlying action.
 231      */
 232     private void registerFabMkDirListeners() {
 233         getFabMkdir().setOnClickListener(new View.OnClickListener() {
 234             @Override
 235             public void onClick(View v) {
 236                 CreateFolderDialogFragment dialog =
 237                         CreateFolderDialogFragment.newInstance(mFile);
 238                 dialog.show(getActivity().getSupportFragmentManager(), FileDisplayActivity.DIALOG_CREATE_FOLDER);
 239                 getFabMain().collapse();
 240                 recordMiniFabClick();
 241             }
 242         });
 243
 244         getFabMkdir().setOnLongClickListener(new View.OnLongClickListener() {
 245             @Override
 246             public boolean onLongClick(View v) {
 247                 Toast.makeText(getActivity(), R.string.actionbar_mkdir, Toast.LENGTH_SHORT).show();
 248                 return true;
 249             }
 250         });
 251     }
 252
 253     /**
 254      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 255      * on the Upload from App mini FAB for the linked action and {@link Toast} showing the underlying action.
 256      */
 257     private void registerFabUploadFromAppListeners() {
 258         getFabUploadFromApp().setOnClickListener(new View.OnClickListener() {
 259             @Override
 260             public void onClick(View v) {
 261                 Intent action = new Intent(Intent.ACTION_GET_CONTENT);
 262                 action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
 263
 264                 //Intent.EXTRA_ALLOW_MULTIPLE is only supported on api level 18+, Jelly Bean
 265                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
 266                     action.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
 267                 }
 268
 269                 getActivity().startActivityForResult(
 270                         Intent.createChooser(action, getString(R.string.upload_chooser_title)),
 271                         UploadSourceDialogFragment.ACTION_SELECT_CONTENT_FROM_APPS
 272                 );
 273                 getFabMain().collapse();
 274                 recordMiniFabClick();
 275             }
 276         });
 277
 278         getFabUploadFromApp().setOnLongClickListener(new View.OnLongClickListener() {
 279             @Override
 280             public boolean onLongClick(View v) {
 281                 Toast.makeText(getActivity(),
 282                         R.string.actionbar_upload_from_apps,
 283                         Toast.LENGTH_SHORT).show();
 284                 return true;
 285             }
 286         });
 287     }
 288
 289     /**
 290      * records a click on a mini FAB and thus:
 291      * <ol>
 292      *     <li>persists the click fact</li>
 293      *     <li>removes the mini FAB labels</li>
 294      * </ol>
 295      */
 296     private void recordMiniFabClick() {
 297         // only record if it hasn't been done already at some other time
 298         if(!miniFabClicked) {
 299             final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
 300             sp.edit().putLong(KEY_FAB_EVER_CLICKED, 1).commit();
 301             miniFabClicked = true;
 302         }
 303     }
 304
 305     /**
 306      * removes the labels on all known min FABs.
 307      */
 308     private void removeFabLabels() {
 309         getFabUpload().setTitle(null);
 310         getFabMkdir().setTitle(null);
 311         getFabUploadFromApp().setTitle(null);
 312         ((TextView) getFabUpload().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 313         ((TextView) getFabMkdir().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 314         ((TextView) getFabUploadFromApp().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 315     }
 316
 317     private void registerLongClickListener() {
 318         getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
 319             public boolean onItemLongClick(AdapterView<?> arg0, View v,
 320                                            int index, long arg3) {
 321                 showFileAction(index);
 322                 return true;
 323             }
 324         });
 325     }
 326
 327     private void showFileAction(int fileIndex) {
 328         Bundle args = getArguments();
 329         PopupMenu pm = new PopupMenu(getActivity(),null);
 330         Menu menu = pm.getMenu();
 331
 332         boolean allowContextualActions =
 333                 (args == null) ? true : args.getBoolean(ARG_ALLOW_CONTEXTUAL_ACTIONS, true);
 334
 335         if (allowContextualActions) {
 336             MenuInflater inflater = getActivity().getMenuInflater();
 337
 338             inflater.inflate(R.menu.file_actions_menu, menu);
 339             OCFile targetFile = (OCFile) mAdapter.getItem(fileIndex);
 340
 341             if (mContainerActivity.getStorageManager() != null) {
 342                 FileMenuFilter mf = new FileMenuFilter(
 343                         targetFile,
 344                         mContainerActivity.getStorageManager().getAccount(),
 345                         mContainerActivity,
 346                         getActivity()
 347                 );
 348                 mf.filter(menu);
 349             }
 350
 351             /// TODO break this direct dependency on FileDisplayActivity... if possible
 352             MenuItem item = menu.findItem(R.id.action_open_file_with);
 353             FileFragment frag = ((FileDisplayActivity)getActivity()).getSecondFragment();
 354             if (frag != null && frag instanceof FileDetailFragment &&
 355                     frag.getFile().getFileId() == targetFile.getFileId()) {
 356                 item = menu.findItem(R.id.action_see_details);
 357                 if (item != null) {
 358                     item.setVisible(false);
 359                     item.setEnabled(false);
 360                 }
 361             }
 362
 363             FileActionsDialogFragment dialog = FileActionsDialogFragment.newInstance(menu, fileIndex, targetFile.getFileName());
 364             dialog.setTargetFragment(this, 0);
 365             dialog.show(getFragmentManager(), FileActionsDialogFragment.FTAG_FILE_ACTIONS);
 366         }
 367     }
 368
 369     /**
 370      * Saves the current listed folder.
 371      */
 372     @Override
 373     public void onSaveInstanceState(Bundle outState) {
 374         super.onSaveInstanceState(outState);
 375         outState.putParcelable(KEY_FILE, mFile);
 376     }
 377
 378     /**
 379      * Call this, when the user presses the up button.
 380      * <p>
 381      *     Tries to move up the current folder one level. If the parent folder was removed from the
 382      *     database, it continues browsing up until finding an existing folders.
 383      * </p>
 384      * @return Count of folder levels browsed up.
 385      */
 386     public int onBrowseUp() {
 387         OCFile parentDir = null;
 388         int moveCount = 0;
 389
 390         if (mFile != null) {
 391             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 392
 393             String parentPath = null;
 394             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 395                 parentPath = new File(mFile.getRemotePath()).getParent();
 396                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 397                         parentPath + OCFile.PATH_SEPARATOR;
 398                 parentDir = storageManager.getFileByPath(parentPath);
 399                 moveCount++;
 400             } else {
 401                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);
 402             }
 403             while (parentDir == null) {
 404                 parentPath = new File(parentPath).getParent();
 405                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 406                         parentPath + OCFile.PATH_SEPARATOR;
 407                 parentDir = storageManager.getFileByPath(parentPath);
 408                 moveCount++;
 409             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 410             mFile = parentDir;
 411
 412             // TODO Enable when "On Device" is recovered ?
 413             listDirectory(mFile /*, MainApp.getOnlyOnDevice()*/);
 414
 415             onRefresh(false);
 416
 417             // restore index and top position
 418             restoreIndexAndTopPosition();
 419
 420         }   // else - should never happen now
 421
 422         return moveCount;
 423     }
 424
 425     @Override
 426     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 427         OCFile file = (OCFile) mAdapter.getItem(position);
 428         if (file != null) {
 429             if (file.isFolder()) {
 430                 // update state and view of this fragment
 431                 // TODO Enable when "On Device" is recovered ?
 432                 listDirectory(file/*, MainApp.getOnlyOnDevice()*/);
 433                 // then, notify parent activity to let it update its state and view
 434                 mContainerActivity.onBrowsedDownTo(file);
 435                 // save index and top position
 436                 saveIndexAndTopPosition(position);
 437
 438             } else { /// Click on a file
 439                 if (PreviewImageFragment.canBePreviewed(file)) {
 440                     // preview image - it handles the download, if needed
 441                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 442                 } else if (PreviewTextFragment.canBePreviewed(file)){
 443                     ((FileDisplayActivity)mContainerActivity).startTextPreview(file);
 444                 } else if (file.isDown()) {
 445                     if (PreviewMediaFragment.canBePreviewed(file)) {
 446                         // media preview
 447                         ((FileDisplayActivity) mContainerActivity).startMediaPreview(file, 0, true);
 448                     } else {
 449                         mContainerActivity.getFileOperationsHelper().openFile(file);
 450                     }
 451
 452                 } else {
 453                     // automatic download, preview on finish
 454                     ((FileDisplayActivity) mContainerActivity).startDownloadForPreview(file);
 455                 }
 456
 457             }
 458
 459         } else {
 460             Log_OC.d(TAG, "Null object in ListAdapter!!");
 461         }
 462
 463     }
 464
 465     /**
 466      * {@inheritDoc}
 467      */
 468     @Override
 469     public void onCreateContextMenu(
 470             ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 471         Bundle args = getArguments();
 472         boolean allowContextualActions =
 473                 (args == null) ? true : args.getBoolean(ARG_ALLOW_CONTEXTUAL_ACTIONS, true);
 474         if (allowContextualActions) {
 475             MenuInflater inflater = getActivity().getMenuInflater();
 476             inflater.inflate(R.menu.file_actions_menu, menu);
 477             AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 478             OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 479
 480             if (mContainerActivity.getStorageManager() != null) {
 481                 FileMenuFilter mf = new FileMenuFilter(
 482                     targetFile,
 483                     mContainerActivity.getStorageManager().getAccount(),
 484                     mContainerActivity,
 485                     getActivity()
 486                 );
 487                 mf.filter(menu);
 488             }
 489
 490             /// TODO break this direct dependency on FileDisplayActivity... if possible
 491             MenuItem item = menu.findItem(R.id.action_open_file_with);
 492             FileFragment frag = ((FileDisplayActivity)getActivity()).getSecondFragment();
 493             if (frag != null && frag instanceof FileDetailFragment &&
 494                     frag.getFile().getFileId() == targetFile.getFileId()) {
 495                 item = menu.findItem(R.id.action_see_details);
 496                 if (item != null) {
 497                     item.setVisible(false);
 498                     item.setEnabled(false);
 499                 }
 500             }
 501         }
 502     }
 503
 504     /**
 505      * {@inheritDoc}
 506      */
 507     @Override
 508     public boolean onFileActionChosen(int menuId, int filePosition) {
 509         mTargetFile = (OCFile) mAdapter.getItem(filePosition);
 510         switch (menuId) {
 511             case R.id.action_share_file: {
 512                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 513                 return true;
 514             }
 515             case R.id.action_open_file_with: {
 516                 mContainerActivity.getFileOperationsHelper().openFile(mTargetFile);
 517                 return true;
 518             }
 519             case R.id.action_unshare_file: {
 520                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 521                 return true;
 522             }
 523             case R.id.action_rename_file: {
 524                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 525                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 526                 return true;
 527             }
 528             case R.id.action_remove_file: {
 529                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 530                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 531                 return true;
 532             }
 533             case R.id.action_download_file:
 534             case R.id.action_sync_file: {
 535                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 536                 return true;
 537             }
 538             case R.id.action_cancel_sync: {
 539                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 540                 return true;
 541             }
 542             case R.id.action_see_details: {
 543                 mContainerActivity.showDetails(mTargetFile);
 544                 return true;
 545             }
 546             case R.id.action_send_file: {
 547                 // Obtain the file
 548                 if (!mTargetFile.isDown()) {  // Download the file
 549                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 550                     ((FileDisplayActivity) mContainerActivity).startDownloadForSending(mTargetFile);
 551
 552                 } else {
 553                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 554                 }
 555                 return true;
 556             }
 557             case R.id.action_move: {
 558                 Intent action = new Intent(getActivity(), FolderPickerActivity.class);
 559
 560                 // Pass mTargetFile that contains info of selected file/folder
 561                 action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile);
 562                 getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_MOVE_FILES);
 563                 return true;
 564             }
 565             case R.id.action_favorite_file: {
 566                 mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, true);
 567                 return true;
 568             }
 569             case R.id.action_unfavorite_file: {
 570                 mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, false);
 571                 return true;
 572             }
 573             case R.id.action_copy:
 574                 Intent action = new Intent(getActivity(), FolderPickerActivity.class);
 575
 576                 // Pass mTargetFile that contains info of selected file/folder
 577                 action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile);
 578                 getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_COPY_FILES);
 579                 return true;
 580             default:
 581                 return false;
 582         }
 583     }
 584
 585     /**
 586      * {@inhericDoc}
 587      */
 588     @Override
 589     public boolean onContextItemSelected (MenuItem item) {
 590         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 591         boolean matched = onFileActionChosen(item.getItemId(), ((AdapterContextMenuInfo) item.getMenuInfo()).position);
 592         if(!matched) {
 593             return super.onContextItemSelected(item);
 594         } else {
 595             return matched;
 596         }
 597     }
 598
 599
 600     /**
 601      * Use this to query the {@link OCFile} that is currently
 602      * being displayed by this fragment
 603      *
 604      * @return The currently viewed OCFile
 605      */
 606     public OCFile getCurrentFile() {
 607         return mFile;
 608     }
 609
 610     /**
 611      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 612      */
 613     public void listDirectory(/*boolean onlyOnDevice*/){
 614         listDirectory(null);
 615         // TODO Enable when "On Device" is recovered ?
 616         // listDirectory(null, onlyOnDevice);
 617     }
 618
 619     public void refreshDirectory(){
 620         // TODO Enable when "On Device" is recovered ?
 621         listDirectory(getCurrentFile()/*, MainApp.getOnlyOnDevice()*/);
 622     }
 623
 624     /**
 625      * Lists the given directory on the view. When the input parameter is null,
 626      * it will either refresh the last known directory. list the root
 627      * if there never was a directory.
 628      *
 629      * @param directory File to be listed
 630      */
 631     public void listDirectory(OCFile directory/*, boolean onlyOnDevice*/) {
 632         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 633         if (storageManager != null) {
 634
 635             // Check input parameters for null
 636             if (directory == null) {
 637                 if (mFile != null) {
 638                     directory = mFile;
 639                 } else {
 640                     directory = storageManager.getFileByPath("/");
 641                     if (directory == null) return; // no files, wait for sync
 642                 }
 643             }
 644
 645
 646             // If that's not a directory -> List its parent
 647             if (!directory.isFolder()) {
 648                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 649                 directory = storageManager.getFileById(directory.getParentId());
 650             }
 651
 652             // TODO Enable when "On Device" is recovered ?
 653             mAdapter.swapDirectory(directory, storageManager/*, onlyOnDevice*/);
 654             if (mFile == null || !mFile.equals(directory)) {
 655                 mCurrentListView.setSelection(0);
 656             }
 657             mFile = directory;
 658
 659             updateLayout();
 660
 661         }
 662     }
 663
 664     private void updateLayout() {
 665         if (!mJustFolders) {
 666             int filesCount = 0, foldersCount = 0, imagesCount = 0;
 667             int count = mAdapter.getCount();
 668             OCFile file;
 669             for (int i=0; i < count ; i++) {
 670                 file = (OCFile) mAdapter.getItem(i);
 671                 if (file.isFolder()) {
 672                     foldersCount++;
 673                 } else {
 674                     if (!file.isHidden()) {
 675                         filesCount++;
 676
 677                         if (file.isImage()) {
 678                             imagesCount++;
 679                         }
 680                     }
 681                 }
 682             }
 683             // set footer text
 684             setFooterText(generateFooterText(filesCount, foldersCount));
 685
 686             // decide grid vs list view
 687             OwnCloudVersion version = AccountUtils.getServerVersion(
 688                     ((FileActivity)mContainerActivity).getAccount());
 689             if (version != null && version.supportsRemoteThumbnails() &&
 690                 imagesCount > 0 && imagesCount == filesCount) {
 691                 switchToGridView();
 692                 registerLongClickListener();
 693             } else {
 694                 switchToListView();
 695             }
 696         }
 697     }
 698
 699     private String generateFooterText(int filesCount, int foldersCount) {
 700         String output;
 701         if (filesCount <= 0) {
 702             if (foldersCount <= 0) {
 703                 output = "";
 704
 705             } else if (foldersCount == 1) {
 706                 output = getResources().getString(R.string.file_list__footer__folder);
 707
 708             } else { // foldersCount > 1
 709                 output = getResources().getString(R.string.file_list__footer__folders, foldersCount);
 710             }
 711
 712         } else if (filesCount == 1) {
 713             if (foldersCount <= 0) {
 714                 output = getResources().getString(R.string.file_list__footer__file);
 715
 716             } else if (foldersCount == 1) {
 717                 output = getResources().getString(R.string.file_list__footer__file_and_folder);
 718
 719             } else { // foldersCount > 1
 720                 output = getResources().getString(R.string.file_list__footer__file_and_folders, foldersCount);
 721             }
 722         } else {    // filesCount > 1
 723             if (foldersCount <= 0) {
 724                 output = getResources().getString(R.string.file_list__footer__files, filesCount);
 725
 726             } else if (foldersCount == 1) {
 727                 output = getResources().getString(R.string.file_list__footer__files_and_folder, filesCount);
 728
 729             } else { // foldersCount > 1
 730                 output = getResources().getString(
 731                         R.string.file_list__footer__files_and_folders, filesCount, foldersCount
 732                 );
 733
 734             }
 735         }
 736         return output;
 737     }
 738
 739     public void sortByName(boolean descending) {
 740         mAdapter.setSortOrder(FileStorageUtils.SORT_NAME, descending);
 741     }
 742
 743     public void sortByDate(boolean descending) {
 744         mAdapter.setSortOrder(FileStorageUtils.SORT_DATE, descending);
 745     }
 746
 747     public void sortBySize(boolean descending) {
 748         mAdapter.setSortOrder(FileStorageUtils.SORT_SIZE, descending);
 749     }
 750 }