src/com/owncloud/android/ui/activity/FileDisplayActivity.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
  19 package com.owncloud.android.ui.activity;
  20
  21 import android.accounts.Account;
  22 import android.accounts.AccountManager;
  23 import android.accounts.AuthenticatorException;
  24 import android.accounts.OperationCanceledException;
  25 import android.app.AlertDialog;
  26 import android.app.Dialog;
  27 import android.app.ProgressDialog;
  28 import android.content.BroadcastReceiver;
  29 import android.content.ComponentName;
  30 import android.content.ContentResolver;
  31 import android.content.Context;
  32 import android.content.DialogInterface;
  33 import android.content.Intent;
  34 import android.content.IntentFilter;
  35 import android.content.ServiceConnection;
  36 import android.content.SharedPreferences;
  37 import android.content.SyncRequest;
  38 import android.content.res.Resources.NotFoundException;
  39 import android.database.Cursor;
  40 import android.net.Uri;
  41 import android.os.Bundle;
  42 import android.os.IBinder;
  43 import android.preference.PreferenceManager;
  44 import android.provider.MediaStore;
  45 import android.support.v4.app.Fragment;
  46 import android.support.v4.app.FragmentManager;
  47 import android.support.v4.app.FragmentTransaction;
  48 import android.view.View;
  49 import android.view.ViewGroup;
  50 import android.widget.ArrayAdapter;
  51 import android.widget.TextView;
  52 import android.widget.Toast;
  53
  54 import com.actionbarsherlock.app.ActionBar;
  55 import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
  56 import com.actionbarsherlock.view.Menu;
  57 import com.actionbarsherlock.view.MenuInflater;
  58 import com.actionbarsherlock.view.MenuItem;
  59 import com.actionbarsherlock.view.Window;
  60 import com.owncloud.android.BuildConfig;
  61 import com.owncloud.android.MainApp;
  62 import com.owncloud.android.R;
  63 import com.owncloud.android.datamodel.OCFile;
  64 import com.owncloud.android.files.services.FileDownloader;
  65 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  66 import com.owncloud.android.files.services.FileUploader;
  67 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  68 import com.owncloud.android.lib.common.OwnCloudAccount;
  69 import com.owncloud.android.lib.common.OwnCloudClient;
  70 import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
  71 import com.owncloud.android.lib.common.OwnCloudCredentials;
  72 import com.owncloud.android.lib.common.accounts.AccountUtils.AccountNotFoundException;
  73 import com.owncloud.android.lib.common.network.CertificateCombinedException;
  74 import com.owncloud.android.lib.common.operations.RemoteOperation;
  75 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  76 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  77 import com.owncloud.android.lib.common.utils.Log_OC;
  78 import com.owncloud.android.operations.CreateFolderOperation;
  79 import com.owncloud.android.operations.CreateShareOperation;
  80 import com.owncloud.android.operations.MoveFileOperation;
  81 import com.owncloud.android.operations.RemoveFileOperation;
  82 import com.owncloud.android.operations.RenameFileOperation;
  83 import com.owncloud.android.operations.SynchronizeFileOperation;
  84 import com.owncloud.android.operations.SynchronizeFolderOperation;
  85 import com.owncloud.android.operations.UnshareLinkOperation;
  86 import com.owncloud.android.services.observer.FileObserverService;
  87 import com.owncloud.android.syncadapter.FileSyncAdapter;
  88 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  89 import com.owncloud.android.ui.dialog.SslUntrustedCertDialog;
  90 import com.owncloud.android.ui.dialog.SslUntrustedCertDialog.OnSslUntrustedCertListener;
  91 import com.owncloud.android.ui.fragment.FileDetailFragment;
  92 import com.owncloud.android.ui.fragment.FileFragment;
  93 import com.owncloud.android.ui.fragment.OCFileListFragment;
  94 import com.owncloud.android.ui.preview.PreviewImageActivity;
  95 import com.owncloud.android.ui.preview.PreviewImageFragment;
  96 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  97 import com.owncloud.android.ui.preview.PreviewTextFragment;
  98 import com.owncloud.android.ui.preview.PreviewVideoActivity;
  99 import com.owncloud.android.utils.DisplayUtils;
 100 import com.owncloud.android.utils.ErrorMessageAdapter;
 101
 102 import java.io.File;
 103 import java.io.IOException;
 104
 105
 106 /**
 107  * Displays, what files the user has available in his ownCloud.
 108  *
 109  * @author Bartek Przybylski
 110  * @author David A. Velasco
 111  */
 112
 113 public class FileDisplayActivity extends HookActivity implements
 114         FileFragment.ContainerActivity, OnNavigationListener,
 115         OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 116
 117     private ArrayAdapter<String> mDirectories;
 118
 119     private SyncBroadcastReceiver mSyncBroadcastReceiver;
 120     private UploadFinishReceiver mUploadFinishReceiver;
 121     private DownloadFinishReceiver mDownloadFinishReceiver;
 122     private RemoteOperationResult mLastSslUntrustedServerResult = null;
 123
 124     private boolean mDualPane;
 125     private View mLeftFragmentContainer;
 126     private View mRightFragmentContainer;
 127
 128     private static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
 129     private static final String KEY_SYNC_IN_PROGRESS = "SYNC_IN_PROGRESS";
 130     private static final String KEY_WAITING_TO_SEND = "WAITING_TO_SEND";
 131
 132     public static final int DIALOG_SHORT_WAIT = 0;
 133     private static final int DIALOG_CHOOSE_UPLOAD_SOURCE = 1;
 134     private static final int DIALOG_CERT_NOT_SAVED = 2;
 135
 136     public static final String ACTION_DETAILS = "com.owncloud.android.ui.activity.action.DETAILS";
 137
 138     private static final int ACTION_SELECT_CONTENT_FROM_APPS = 1;
 139     private static final int ACTION_SELECT_MULTIPLE_FILES = 2;
 140     public static final int ACTION_MOVE_FILES = 3;
 141
 142     private static final String TAG = FileDisplayActivity.class.getSimpleName();
 143
 144     private static final String TAG_LIST_OF_FILES = "LIST_OF_FILES";
 145     private static final String TAG_SECOND_FRAGMENT = "SECOND_FRAGMENT";
 146
 147     private OCFile mWaitingToPreview;
 148
 149     private boolean mSyncInProgress = false;
 150
 151     private String DIALOG_UNTRUSTED_CERT;
 152
 153     private OCFile mWaitingToSend;
 154
 155     @Override
 156     protected void onCreate(Bundle savedInstanceState) {
 157         Log_OC.d(TAG, "onCreate() start");
 158         requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
 159
 160         super.onCreate(savedInstanceState); // this calls onAccountChanged() when ownCloud Account is valid
 161
 162         // PIN CODE request ;  best location is to decide, let's try this first
 163         if (getIntent().getAction() != null && getIntent().getAction().equals(Intent.ACTION_MAIN) && savedInstanceState == null) {
 164             requestPinCode();
 165         } else if (getIntent().getAction() == null && savedInstanceState == null) {
 166             requestPinCode();
 167         }
 168
 169         /// grant that FileObserverService is watching favourite files
 170         if (savedInstanceState == null) {
 171             Intent initObserversIntent = FileObserverService.makeInitIntent(this);
 172             startService(initObserversIntent);
 173         }
 174
 175         /// Load of saved instance state
 176         if (savedInstanceState != null) {
 177             mWaitingToPreview = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW);
 178             mSyncInProgress = savedInstanceState.getBoolean(KEY_SYNC_IN_PROGRESS);
 179             mWaitingToSend = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_SEND);
 180
 181         } else {
 182             mWaitingToPreview = null;
 183             mSyncInProgress = false;
 184             mWaitingToSend = null;
 185         }
 186
 187         /// USER INTERFACE
 188
 189         // Inflate and set the layout view
 190         setContentView(R.layout.files);
 191         mDualPane = getResources().getBoolean(R.bool.large_land_layout);
 192         mLeftFragmentContainer = findViewById(R.id.left_fragment_container);
 193         mRightFragmentContainer = findViewById(R.id.right_fragment_container);
 194         if (savedInstanceState == null) {
 195             createMinFragments();
 196         }
 197
 198         // Action bar setup
 199         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
 200         getSupportActionBar().setHomeButtonEnabled(true);       // mandatory since Android ICS, according to the official documentation
 201         setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);    // always AFTER setContentView(...) ; to work around bug in its implementation
 202
 203         setBackgroundText();
 204
 205         Log_OC.d(TAG, "onCreate() end");
 206     }
 207
 208     @Override
 209     protected void onStart() {
 210         super.onStart();
 211         getSupportActionBar().setIcon(DisplayUtils.getSeasonalIconId());
 212     }
 213
 214     @Override
 215     protected void onDestroy() {
 216         super.onDestroy();
 217     }
 218
 219     /**
 220      * Called when the ownCloud {@link Account} associated to the Activity was just updated.
 221      */
 222     @Override
 223     protected void onAccountSet(boolean stateWasRecovered) {
 224         super.onAccountSet(stateWasRecovered);
 225         if (getAccount() != null) {
 226             /// Check whether the 'main' OCFile handled by the Activity is contained in the current Account
 227             OCFile file = getFile();
 228             // get parent from path
 229             String parentPath = "";
 230             if (file != null) {
 231                 if (file.isDown() && file.getLastSyncDateForProperties() == 0) {
 232                     // upload in progress - right now, files are not inserted in the local cache until the upload is successful
 233                     // get parent from path
 234                     parentPath = file.getRemotePath().substring(0, file.getRemotePath().lastIndexOf(file.getFileName()));
 235                     if (getStorageManager().getFileByPath(parentPath) == null)
 236                         file = null; // not able to know the directory where the file is uploading
 237                 } else {
 238                     file = getStorageManager().getFileByPath(file.getRemotePath());   // currentDir = null if not in the current Account
 239                 }
 240             }
 241             if (file == null) {
 242                 // fall back to root folder
 243                 file = getStorageManager().getFileByPath(OCFile.ROOT_PATH);  // never returns null
 244             }
 245             setFile(file);
 246             setNavigationListWithFolder(file);
 247
 248             if (!stateWasRecovered) {
 249                 Log_OC.e(TAG, "Initializing Fragments in onAccountChanged..");
 250                 initFragmentsWithFile();
 251                 if (file.isFolder()) {
 252                     startSyncFolderOperation(file, false);
 253                 }
 254
 255             } else {
 256                 updateFragmentsVisibility(!file.isFolder());
 257                 updateNavigationElementsInActionBar(file.isFolder() ? null : file);
 258             }
 259         }
 260     }
 261
 262
 263     private void setNavigationListWithFolder(OCFile file) {
 264         mDirectories.clear();
 265         OCFile fileIt = file;
 266         String parentPath;
 267         while (fileIt != null && fileIt.getFileName() != OCFile.ROOT_PATH) {
 268             if (fileIt.isFolder()) {
 269                 mDirectories.add(fileIt.getFileName());
 270             }
 271             // get parent from path
 272             parentPath = fileIt.getRemotePath().substring(0, fileIt.getRemotePath().lastIndexOf(fileIt.getFileName()));
 273             fileIt = getStorageManager().getFileByPath(parentPath);
 274         }
 275         mDirectories.add(OCFile.PATH_SEPARATOR);
 276     }
 277
 278
 279     private void createMinFragments() {
 280         OCFileListFragment listOfFiles = new OCFileListFragment();
 281         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 282         transaction.add(R.id.left_fragment_container, listOfFiles, TAG_LIST_OF_FILES);
 283         transaction.commit();
 284     }
 285
 286     private void initFragmentsWithFile() {
 287         if (getAccount() != null && getFile() != null) {
 288             /// First fragment
 289             OCFileListFragment listOfFiles = getListOfFilesFragment();
 290             if (listOfFiles != null) {
 291                 listOfFiles.listDirectory(getCurrentDir());
 292             } else {
 293                 Log_OC.e(TAG, "Still have a chance to lose the initializacion of list fragment >(");
 294             }
 295
 296             /// Second fragment
 297             OCFile file = getFile();
 298             Fragment secondFragment = chooseInitialSecondFragment(file);
 299             if (secondFragment != null) {
 300                 setSecondFragment(secondFragment);
 301                 updateFragmentsVisibility(true);
 302                 updateNavigationElementsInActionBar(file);
 303
 304             } else {
 305                 cleanSecondFragment();
 306                 if (file.isDown() && PreviewTextFragment.canBePreviewed(file))
 307                     startTextPreview(file);
 308             }
 309
 310         } else {
 311             Log_OC.wtf(TAG, "initFragments() called with invalid NULLs!");
 312             if (getAccount() == null) {
 313                 Log_OC.wtf(TAG, "\t account is NULL");
 314             }
 315             if (getFile() == null) {
 316                 Log_OC.wtf(TAG, "\t file is NULL");
 317             }
 318         }
 319     }
 320
 321     private Fragment chooseInitialSecondFragment(OCFile file) {
 322         Fragment secondFragment = null;
 323         if (file != null && !file.isFolder()) {
 324             if (file.isDown() && PreviewMediaFragment.canBePreviewed(file)
 325                     && file.getLastSyncDateForProperties() > 0  // temporal fix
 326                     ) {
 327                 int startPlaybackPosition = getIntent().getIntExtra(PreviewVideoActivity.EXTRA_START_POSITION, 0);
 328                 boolean autoplay = getIntent().getBooleanExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, true);
 329                 secondFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
 330
 331             } else if (file.isDown() && PreviewTextFragment.canBePreviewed(file)) {
 332                 secondFragment = null;
 333             } else secondFragment = new FileDetailFragment(file, getAccount());
 334         }
 335         return secondFragment;
 336     }
 337
 338
 339     /**
 340      * Replaces the second fragment managed by the activity with the received as
 341      * a parameter.
 342      * <p/>
 343      * Assumes never will be more than two fragments managed at the same time.
 344      *
 345      * @param fragment New second Fragment to set.
 346      */
 347     private void setSecondFragment(Fragment fragment) {
 348         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 349         transaction.replace(R.id.right_fragment_container, fragment, TAG_SECOND_FRAGMENT);
 350         transaction.commit();
 351     }
 352
 353
 354     private void updateFragmentsVisibility(boolean existsSecondFragment) {
 355         if (mDualPane) {
 356             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
 357                 mLeftFragmentContainer.setVisibility(View.VISIBLE);
 358             }
 359             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
 360                 mRightFragmentContainer.setVisibility(View.VISIBLE);
 361             }
 362
 363         } else if (existsSecondFragment) {
 364             if (mLeftFragmentContainer.getVisibility() != View.GONE) {
 365                 mLeftFragmentContainer.setVisibility(View.GONE);
 366             }
 367             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
 368                 mRightFragmentContainer.setVisibility(View.VISIBLE);
 369             }
 370
 371         } else {
 372             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
 373                 mLeftFragmentContainer.setVisibility(View.VISIBLE);
 374             }
 375             if (mRightFragmentContainer.getVisibility() != View.GONE) {
 376                 mRightFragmentContainer.setVisibility(View.GONE);
 377             }
 378         }
 379     }
 380
 381
 382     private OCFileListFragment getListOfFilesFragment() {
 383         Fragment listOfFiles = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_LIST_OF_FILES);
 384         if (listOfFiles != null) {
 385             return (OCFileListFragment) listOfFiles;
 386         }
 387         Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!");
 388         return null;
 389     }
 390
 391     public FileFragment getSecondFragment() {
 392         Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
 393         if (second != null) {
 394             return (FileFragment) second;
 395         }
 396         return null;
 397     }
 398
 399     protected void cleanSecondFragment() {
 400         Fragment second = getSecondFragment();
 401         if (second != null) {
 402             FragmentTransaction tr = getSupportFragmentManager().beginTransaction();
 403             tr.remove(second);
 404             tr.commit();
 405         }
 406         updateFragmentsVisibility(false);
 407         updateNavigationElementsInActionBar(null);
 408     }
 409
 410     protected void refreshListOfFilesFragment() {
 411         OCFileListFragment fileListFragment = getListOfFilesFragment();
 412         if (fileListFragment != null) {
 413             fileListFragment.listDirectory();
 414         }
 415     }
 416
 417     protected void refreshSecondFragment(String downloadEvent, String downloadedRemotePath, boolean success) {
 418         FileFragment secondFragment = getSecondFragment();
 419         boolean waitedPreview = (mWaitingToPreview != null && mWaitingToPreview.getRemotePath().equals(downloadedRemotePath));
 420         if (secondFragment != null && secondFragment instanceof FileDetailFragment) {
 421             FileDetailFragment detailsFragment = (FileDetailFragment) secondFragment;
 422             OCFile fileInFragment = detailsFragment.getFile();
 423             if (fileInFragment != null && !downloadedRemotePath.equals(fileInFragment.getRemotePath())) {
 424                 // the user browsed to other file ; forget the automatic preview
 425                 mWaitingToPreview = null;
 426
 427             } else if (downloadEvent.equals(FileDownloader.getDownloadAddedMessage())) {
 428                 // grant that the right panel updates the progress bar
 429                 detailsFragment.listenForTransferProgress();
 430                 detailsFragment.updateFileDetails(true, false);
 431
 432             } else if (downloadEvent.equals(FileDownloader.getDownloadFinishMessage())) {
 433                 //  update the right panel
 434                 boolean detailsFragmentChanged = false;
 435                 if (waitedPreview) {
 436                     if (success) {
 437                         mWaitingToPreview = getStorageManager().getFileById(mWaitingToPreview.getFileId());   // update the file from database, for the local storage path
 438                         if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
 439                             startMediaPreview(mWaitingToPreview, 0, true);
 440                             detailsFragmentChanged = true;
 441                         } else if (PreviewTextFragment.canBePreviewed(mWaitingToPreview)) {
 442                             startTextPreview(mWaitingToPreview);
 443                             detailsFragmentChanged = true;
 444                         } else {
 445                             getFileOperationsHelper().openFile(mWaitingToPreview);
 446                         }
 447                     }
 448                     mWaitingToPreview = null;
 449                 }
 450                 if (!detailsFragmentChanged) {
 451                     detailsFragment.updateFileDetails(false, (success));
 452                 }
 453             }
 454         }
 455     }
 456
 457     @Override
 458     public boolean onPrepareOptionsMenu(Menu menu) {
 459         if (BuildConfig.DEBUG) {
 460             menu.findItem(R.id.action_logger).setVisible(true);
 461         } else {
 462             menu.findItem(R.id.action_logger).setVisible(false);
 463         }
 464         return super.onPrepareOptionsMenu(menu);
 465     }
 466
 467     @Override
 468     public boolean onCreateOptionsMenu(Menu menu) {
 469         MenuInflater inflater = getSherlock().getMenuInflater();
 470         inflater.inflate(R.menu.main_menu, menu);
 471         return true;
 472     }
 473
 474     @Override
 475     public boolean onOptionsItemSelected(MenuItem item) {
 476         boolean retval = true;
 477         switch (item.getItemId()) {
 478             case R.id.action_create_dir: {
 479                 CreateFolderDialogFragment dialog =
 480                         CreateFolderDialogFragment.newInstance(getCurrentDir());
 481                 dialog.show(getSupportFragmentManager(), "createdirdialog");
 482                 break;
 483             }
 484             case R.id.action_sync_account: {
 485                 startSynchronization();
 486                 break;
 487             }
 488             case R.id.action_upload: {
 489                 showDialog(DIALOG_CHOOSE_UPLOAD_SOURCE);
 490                 break;
 491             }
 492             case R.id.action_settings: {
 493                 Intent settingsIntent = new Intent(this, Preferences.class);
 494                 startActivity(settingsIntent);
 495                 break;
 496             }
 497             case R.id.action_logger: {
 498                 Intent loggerIntent = new Intent(getApplicationContext(), LogHistoryActivity.class);
 499                 startActivity(loggerIntent);
 500                 break;
 501             }
 502             case android.R.id.home: {
 503                 FileFragment second = getSecondFragment();
 504                 OCFile currentDir = getCurrentDir();
 505                 if ((currentDir != null && currentDir.getParentId() != 0) ||
 506                         (second != null && second.getFile() != null)) {
 507                     onBackPressed();
 508
 509                 }
 510                 break;
 511             }
 512             default:
 513                 retval = super.onOptionsItemSelected(item);
 514         }
 515         return retval;
 516     }
 517
 518     private void startSynchronization() {
 519         Log_OC.e(TAG, "Got to start sync");
 520         if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
 521             Log_OC.e(TAG, "Canceling all syncs for " + MainApp.getAuthority());
 522             ContentResolver.cancelSync(null, MainApp.getAuthority());   // cancel the current synchronizations of any ownCloud account
 523             Bundle bundle = new Bundle();
 524             bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
 525             bundle.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
 526             Log_OC.e(TAG, "Requesting sync for " + getAccount().name + " at " + MainApp.getAuthority());
 527             ContentResolver.requestSync(
 528                     getAccount(),
 529                     MainApp.getAuthority(), bundle);
 530         } else {
 531             Log_OC.e(TAG, "Requesting sync for " + getAccount().name + " at " + MainApp.getAuthority() + " with new API");
 532             SyncRequest.Builder builder = new SyncRequest.Builder();
 533             builder.setSyncAdapter(getAccount(), MainApp.getAuthority());
 534             builder.setExpedited(true);
 535             builder.setManual(true);
 536             builder.syncOnce();
 537             SyncRequest request = builder.build();
 538             ContentResolver.requestSync(request);
 539         }
 540     }
 541
 542
 543     @Override
 544     public boolean onNavigationItemSelected(int itemPosition, long itemId) {
 545         if (itemPosition != 0) {
 546             String targetPath = "";
 547             for (int i = itemPosition; i < mDirectories.getCount() - 1; i++) {
 548                 targetPath = mDirectories.getItem(i) + OCFile.PATH_SEPARATOR + targetPath;
 549             }
 550             targetPath = OCFile.PATH_SEPARATOR + targetPath;
 551             OCFile targetFolder = getStorageManager().getFileByPath(targetPath);
 552             if (targetFolder != null) {
 553                 browseTo(targetFolder);
 554             }
 555
 556             // the next operation triggers a new call to this method, but it's necessary to
 557             // ensure that the name exposed in the action bar is the current directory when the
 558             // user selected it in the navigation list
 559             if (getSupportActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST && itemPosition != 0)
 560                 getSupportActionBar().setSelectedNavigationItem(0);
 561         }
 562         return true;
 563     }
 564
 565     /**
 566      * Called, when the user selected something for uploading
 567      */
 568     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 569         super.onActivityResult(requestCode, resultCode, data);
 570
 571         if (requestCode == ACTION_SELECT_CONTENT_FROM_APPS && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
 572             requestSimpleUpload(data, resultCode);
 573
 574         } else if (requestCode == ACTION_SELECT_MULTIPLE_FILES && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
 575             requestMultipleUpload(data, resultCode);
 576
 577         } else if (requestCode == ACTION_MOVE_FILES && (resultCode == RESULT_OK ||
 578                 resultCode == MoveActivity.RESULT_OK_AND_MOVE)) {
 579
 580             final Intent fData = data;
 581             final int fResultCode = resultCode;
 582             getHandler().postDelayed(
 583                     new Runnable() {
 584                         @Override
 585                         public void run() {
 586                             requestMoveOperation(fData, fResultCode);
 587                         }
 588                     },
 589                     DELAY_TO_REQUEST_OPERATION_ON_ACTIVITY_RESULTS
 590             );
 591         }
 592     }
 593
 594     private void requestMultipleUpload(Intent data, int resultCode) {
 595         String[] filePaths = data.getStringArrayExtra(UploadFilesActivity.EXTRA_CHOSEN_FILES);
 596         if (filePaths != null) {
 597             String[] remotePaths = new String[filePaths.length];
 598             String remotePathBase = "";
 599             for (int j = mDirectories.getCount() - 2; j >= 0; --j) {
 600                 remotePathBase += OCFile.PATH_SEPARATOR + mDirectories.getItem(j);
 601             }
 602             if (!remotePathBase.endsWith(OCFile.PATH_SEPARATOR))
 603                 remotePathBase += OCFile.PATH_SEPARATOR;
 604             for (int j = 0; j < remotePaths.length; j++) {
 605                 remotePaths[j] = remotePathBase + (new File(filePaths[j])).getName();
 606             }
 607
 608             Intent i = new Intent(this, FileUploader.class);
 609             i.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
 610             i.putExtra(FileUploader.KEY_LOCAL_FILE, filePaths);
 611             i.putExtra(FileUploader.KEY_REMOTE_FILE, remotePaths);
 612             i.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
 613             if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
 614                 i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
 615             startService(i);
 616
 617         } else {
 618             Log_OC.d(TAG, "User clicked on 'Update' with no selection");
 619             Toast t = Toast.makeText(this, getString(R.string.filedisplay_no_file_selected), Toast.LENGTH_LONG);
 620             t.show();
 621             return;
 622         }
 623     }
 624
 625
 626     private void requestSimpleUpload(Intent data, int resultCode) {
 627         String filepath = null;
 628         try {
 629             Uri selectedImageUri = data.getData();
 630
 631             String filemanagerstring = selectedImageUri.getPath();
 632             String selectedImagePath = getPath(selectedImageUri);
 633
 634             if (selectedImagePath != null)
 635                 filepath = selectedImagePath;
 636             else
 637                 filepath = filemanagerstring;
 638
 639         } catch (Exception e) {
 640             Log_OC.e(TAG, "Unexpected exception when trying to read the result of Intent.ACTION_GET_CONTENT", e);
 641             e.printStackTrace();
 642
 643         } finally {
 644             if (filepath == null) {
 645                 Log_OC.e(TAG, "Couldnt resolve path to file");
 646                 Toast t = Toast.makeText(this, getString(R.string.filedisplay_unexpected_bad_get_content), Toast.LENGTH_LONG);
 647                 t.show();
 648                 return;
 649             }
 650         }
 651
 652         Intent i = new Intent(this, FileUploader.class);
 653         i.putExtra(FileUploader.KEY_ACCOUNT,
 654                 getAccount());
 655         String remotepath = new String();
 656         for (int j = mDirectories.getCount() - 2; j >= 0; --j) {
 657             remotepath += OCFile.PATH_SEPARATOR + mDirectories.getItem(j);
 658         }
 659         if (!remotepath.endsWith(OCFile.PATH_SEPARATOR))
 660             remotepath += OCFile.PATH_SEPARATOR;
 661         remotepath += new File(filepath).getName();
 662
 663         i.putExtra(FileUploader.KEY_LOCAL_FILE, filepath);
 664         i.putExtra(FileUploader.KEY_REMOTE_FILE, remotepath);
 665         i.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_SINGLE_FILE);
 666         if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
 667             i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
 668         startService(i);
 669     }
 670
 671     /**
 672      * Request the operation for moving the file/folder from one path to another
 673      *
 674      * @param data       Intent received
 675      * @param resultCode Result code received
 676      */
 677     private void requestMoveOperation(Intent data, int resultCode) {
 678         OCFile folderToMoveAt = (OCFile) data.getParcelableExtra(MoveActivity.EXTRA_CURRENT_FOLDER);
 679         OCFile targetFile = (OCFile) data.getParcelableExtra(MoveActivity.EXTRA_TARGET_FILE);
 680         getFileOperationsHelper().moveFile(folderToMoveAt, targetFile);
 681     }
 682
 683     @Override
 684     public void onBackPressed() {
 685         OCFileListFragment listOfFiles = getListOfFilesFragment();
 686         if (mDualPane || getSecondFragment() == null) {
 687             if (listOfFiles != null) {  // should never be null, indeed
 688                 if (mDirectories.getCount() <= 1) {
 689                     finish();
 690                     return;
 691                 }
 692                 int levelsUp = listOfFiles.onBrowseUp();
 693                 for (int i = 0; i < levelsUp && mDirectories.getCount() > 1; i++) {
 694                     popDirname();
 695                 }
 696             }
 697         }
 698         if (listOfFiles != null) {  // should never be null, indeed
 699             setFile(listOfFiles.getCurrentFile());
 700         }
 701         cleanSecondFragment();
 702
 703     }
 704
 705     @Override
 706     protected void onSaveInstanceState(Bundle outState) {
 707         // responsibility of restore is preferred in onCreate() before than in onRestoreInstanceState when there are Fragments involved
 708         Log_OC.e(TAG, "onSaveInstanceState() start");
 709         super.onSaveInstanceState(outState);
 710         outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW, mWaitingToPreview);
 711         outState.putBoolean(FileDisplayActivity.KEY_SYNC_IN_PROGRESS, mSyncInProgress);
 712         //outState.putBoolean(FileDisplayActivity.KEY_REFRESH_SHARES_IN_PROGRESS, mRefreshSharesInProgress);
 713         outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_SEND, mWaitingToSend);
 714
 715         Log_OC.d(TAG, "onSaveInstanceState() end");
 716     }
 717
 718
 719     @Override
 720     protected void onResume() {
 721         super.onResume();
 722         Log_OC.e(TAG, "onResume() start");
 723
 724         // refresh list of files
 725         refreshListOfFilesFragment();
 726
 727         // Listen for sync messages
 728         IntentFilter syncIntentFilter = new IntentFilter(FileSyncAdapter.EVENT_FULL_SYNC_START);
 729         syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_END);
 730         syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_FOLDER_CONTENTS_SYNCED);
 731         syncIntentFilter.addAction(SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED);
 732         syncIntentFilter.addAction(SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED);
 733         mSyncBroadcastReceiver = new SyncBroadcastReceiver();
 734         registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
 735         //LocalBroadcastManager.getInstance(this).registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
 736
 737         // Listen for upload messages
 738         IntentFilter uploadIntentFilter = new IntentFilter(FileUploader.getUploadFinishMessage());
 739         mUploadFinishReceiver = new UploadFinishReceiver();
 740         registerReceiver(mUploadFinishReceiver, uploadIntentFilter);
 741
 742         // Listen for download messages
 743         IntentFilter downloadIntentFilter = new IntentFilter(FileDownloader.getDownloadAddedMessage());
 744         downloadIntentFilter.addAction(FileDownloader.getDownloadFinishMessage());
 745         mDownloadFinishReceiver = new DownloadFinishReceiver();
 746         registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);
 747
 748         Log_OC.d(TAG, "onResume() end");
 749     }
 750
 751
 752     @Override
 753     protected void onPause() {
 754         Log_OC.e(TAG, "onPause() start");
 755         if (mSyncBroadcastReceiver != null) {
 756             unregisterReceiver(mSyncBroadcastReceiver);
 757             //LocalBroadcastManager.getInstance(this).unregisterReceiver(mSyncBroadcastReceiver);
 758             mSyncBroadcastReceiver = null;
 759         }
 760         if (mUploadFinishReceiver != null) {
 761             unregisterReceiver(mUploadFinishReceiver);
 762             mUploadFinishReceiver = null;
 763         }
 764         if (mDownloadFinishReceiver != null) {
 765             unregisterReceiver(mDownloadFinishReceiver);
 766             mDownloadFinishReceiver = null;
 767         }
 768
 769
 770         Log_OC.d(TAG, "onPause() end");
 771         super.onPause();
 772     }
 773
 774
 775     @Override
 776     protected Dialog onCreateDialog(int id) {
 777         Dialog dialog = null;
 778         AlertDialog.Builder builder;
 779         switch (id) {
 780             case DIALOG_SHORT_WAIT: {
 781                 ProgressDialog working_dialog = new ProgressDialog(this);
 782                 working_dialog.setMessage(getResources().getString(
 783                         R.string.wait_a_moment));
 784                 working_dialog.setIndeterminate(true);
 785                 working_dialog.setCancelable(false);
 786                 dialog = working_dialog;
 787                 break;
 788             }
 789             case DIALOG_CHOOSE_UPLOAD_SOURCE: {
 790
 791
 792                 String[] allTheItems = {getString(R.string.actionbar_upload_files),
 793                         getString(R.string.actionbar_upload_from_apps)};
 794
 795                 builder = new AlertDialog.Builder(this);
 796                 builder.setTitle(R.string.actionbar_upload);
 797                 builder.setItems(allTheItems, new DialogInterface.OnClickListener() {
 798                     public void onClick(DialogInterface dialog, int item) {
 799                         if (item == 0) {
 800                             // if (!mDualPane) {
 801                             Intent action = new Intent(FileDisplayActivity.this, UploadFilesActivity.class);
 802                             action.putExtra(UploadFilesActivity.EXTRA_ACCOUNT, FileDisplayActivity.this.getAccount());
 803                             startActivityForResult(action, ACTION_SELECT_MULTIPLE_FILES);
 804                             // } else {
 805                             // TODO create and handle new fragment
 806                             // LocalFileListFragment
 807                             // }
 808                         } else if (item == 1) {
 809                             Intent action = new Intent(Intent.ACTION_GET_CONTENT);
 810                             action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
 811                             startActivityForResult(Intent.createChooser(action, getString(R.string.upload_chooser_title)),
 812                                     ACTION_SELECT_CONTENT_FROM_APPS);
 813                         }
 814                     }
 815                 });
 816                 dialog = builder.create();
 817                 break;
 818             }
 819             case DIALOG_CERT_NOT_SAVED: {
 820                 builder = new AlertDialog.Builder(this);
 821                 builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
 822                 builder.setCancelable(false);
 823                 builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
 824                     @Override
 825                     public void onClick(DialogInterface dialog, int which) {
 826                         dialog.dismiss();
 827                     }
 828
 829                     ;
 830                 });
 831                 dialog = builder.create();
 832                 break;
 833             }
 834             default:
 835                 dialog = null;
 836         }
 837
 838         return dialog;
 839     }
 840
 841
 842     /**
 843      * Translates a content URI of an image to a physical path
 844      * on the disk
 845      *
 846      * @param uri The URI to resolve
 847      * @return The path to the image or null if it could not be found
 848      */
 849     public String getPath(Uri uri) {
 850         String[] projection = {MediaStore.Images.Media.DATA};
 851         Cursor cursor = managedQuery(uri, projection, null, null, null);
 852         if (cursor != null) {
 853             int column_index = cursor
 854                     .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
 855             cursor.moveToFirst();
 856             return cursor.getString(column_index);
 857         }
 858         return null;
 859     }
 860
 861     /**
 862      * Pushes a directory to the drop down list
 863      *
 864      * @param directory to push
 865      * @throws IllegalArgumentException If the {@link OCFile#isFolder()} returns false.
 866      */
 867     public void pushDirname(OCFile directory) {
 868         if (!directory.isFolder()) {
 869             throw new IllegalArgumentException("Only directories may be pushed!");
 870         }
 871         mDirectories.insert(directory.getFileName(), 0);
 872         setFile(directory);
 873     }
 874
 875     /**
 876      * Pops a directory name from the drop down list
 877      *
 878      * @return True, unless the stack is empty
 879      */
 880     public boolean popDirname() {
 881         mDirectories.remove(mDirectories.getItem(0));
 882         return !mDirectories.isEmpty();
 883     }
 884
 885     // Custom array adapter to override text colors
 886     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
 887
 888         public CustomArrayAdapter(FileDisplayActivity ctx, int view) {
 889             super(ctx, view);
 890         }
 891
 892         public View getView(int position, View convertView, ViewGroup parent) {
 893             View v = super.getView(position, convertView, parent);
 894
 895             ((TextView) v).setTextColor(getResources().getColorStateList(
 896                     android.R.color.white));
 897
 898             fixRoot((TextView) v);
 899             return v;
 900         }
 901
 902         public View getDropDownView(int position, View convertView,
 903                                     ViewGroup parent) {
 904             View v = super.getDropDownView(position, convertView, parent);
 905
 906             ((TextView) v).setTextColor(getResources().getColorStateList(
 907                     android.R.color.white));
 908
 909             fixRoot((TextView) v);
 910             return v;
 911         }
 912
 913         private void fixRoot(TextView v) {
 914             if (v.getText().equals(OCFile.PATH_SEPARATOR)) {
 915                 v.setText(R.string.default_display_name_for_root_folder);
 916             }
 917         }
 918
 919     }
 920
 921     private class SyncBroadcastReceiver extends BroadcastReceiver {
 922
 923         /**
 924          * {@link BroadcastReceiver} to enable syncing feedback in UI
 925          */
 926         @Override
 927         public void onReceive(Context context, Intent intent) {
 928             try {
 929                 String event = intent.getAction();
 930                 Log_OC.d(TAG, "Received broadcast " + event);
 931                 String accountName = intent.getStringExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME);
 932                 String synchFolderRemotePath = intent.getStringExtra(FileSyncAdapter.EXTRA_FOLDER_PATH);
 933                 RemoteOperationResult synchResult = (RemoteOperationResult) intent.getSerializableExtra(FileSyncAdapter.EXTRA_RESULT);
 934                 boolean sameAccount = (getAccount() != null && accountName.equals(getAccount().name) && getStorageManager() != null);
 935
 936                 if (sameAccount) {
 937
 938                     if (FileSyncAdapter.EVENT_FULL_SYNC_START.equals(event)) {
 939                         mSyncInProgress = true;
 940
 941                     } else {
 942                         OCFile currentFile = (getFile() == null) ? null : getStorageManager().getFileByPath(getFile().getRemotePath());
 943                         OCFile currentDir = (getCurrentDir() == null) ? null : getStorageManager().getFileByPath(getCurrentDir().getRemotePath());
 944
 945                         if (currentDir == null) {
 946                             // current folder was removed from the server
 947                             Toast.makeText(FileDisplayActivity.this,
 948                                     String.format(getString(R.string.sync_current_folder_was_removed), mDirectories.getItem(0)),
 949                                     Toast.LENGTH_LONG)
 950                                     .show();
 951                             browseToRoot();
 952
 953                         } else {
 954                             if (currentFile == null && !getFile().isFolder()) {
 955                                 // currently selected file was removed in the server, and now we know it
 956                                 cleanSecondFragment();
 957                                 currentFile = currentDir;
 958                             }
 959
 960                             if (synchFolderRemotePath != null && currentDir.getRemotePath().equals(synchFolderRemotePath)) {
 961                                 OCFileListFragment fileListFragment = getListOfFilesFragment();
 962                                 if (fileListFragment != null) {
 963                                     fileListFragment.listDirectory(currentDir);
 964                                 }
 965                             }
 966                             setFile(currentFile);
 967                         }
 968
 969                         mSyncInProgress = (!FileSyncAdapter.EVENT_FULL_SYNC_END.equals(event) && !SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED.equals(event));
 970
 971                         if (SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED.
 972                                 equals(event) &&
 973                                 /// TODO refactor and make common
 974                                 synchResult != null && !synchResult.isSuccess() &&
 975                                 (synchResult.getCode() == ResultCode.UNAUTHORIZED ||
 976                                         synchResult.isIdPRedirection() ||
 977                                         (synchResult.isException() && synchResult.getException()
 978                                                 instanceof AuthenticatorException))) {
 979
 980                             OwnCloudClient client = null;
 981                             try {
 982                                 OwnCloudAccount ocAccount =
 983                                         new OwnCloudAccount(getAccount(), context);
 984                                 client = (OwnCloudClientManagerFactory.getDefaultSingleton().
 985                                         removeClientFor(ocAccount));
 986                                 // TODO get rid of these exceptions
 987                             } catch (AccountNotFoundException e) {
 988                                 e.printStackTrace();
 989                             } catch (AuthenticatorException e) {
 990                                 e.printStackTrace();
 991                             } catch (OperationCanceledException e) {
 992                                 e.printStackTrace();
 993                             } catch (IOException e) {
 994                                 e.printStackTrace();
 995                             }
 996
 997                             if (client != null) {
 998                                 OwnCloudCredentials cred = client.getCredentials();
 999                                 if (cred != null) {
1000                                     AccountManager am = AccountManager.get(context);
1001                                     if (cred.authTokenExpires()) {
1002                                         am.invalidateAuthToken(
1003                                                 getAccount().type,
1004                                                 cred.getAuthToken()
1005                                         );
1006                                     } else {
1007                                         am.clearPassword(getAccount());
1008                                     }
1009                                 }
1010                             }
1011
1012                             requestCredentialsUpdate();
1013
1014                         }
1015                     }
1016                     removeStickyBroadcast(intent);
1017                     Log_OC.d(TAG, "Setting progress visibility to " + mSyncInProgress);
1018                     setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);
1019
1020                     setBackgroundText();
1021
1022                 }
1023
1024                 if (synchResult != null) {
1025                     if (synchResult.getCode().equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
1026                         mLastSslUntrustedServerResult = synchResult;
1027                     }
1028                 }
1029             } catch (RuntimeException e) {
1030                 // avoid app crashes after changing the serial id of RemoteOperationResult
1031                 // in owncloud library with broadcast notifications pending to process
1032                 removeStickyBroadcast(intent);
1033             }
1034         }
1035     }
1036
1037     /**
1038      * Show a text message on screen view for notifying user if content is
1039      * loading or folder is empty
1040      */
1041     private void setBackgroundText() {
1042         OCFileListFragment ocFileListFragment = getListOfFilesFragment();
1043         if (ocFileListFragment != null) {
1044             int message = R.string.file_list_loading;
1045             if (!mSyncInProgress) {
1046                 // In case file list is empty
1047                 message = R.string.file_list_empty;
1048             }
1049             ocFileListFragment.setMessageForEmptyList(getString(message));
1050         } else {
1051             Log_OC.e(TAG, "OCFileListFragment is null");
1052         }
1053     }
1054
1055     /**
1056      * Once the file upload has finished -> update view
1057      */
1058     private class UploadFinishReceiver extends BroadcastReceiver {
1059         /**
1060          * Once the file upload has finished -> update view
1061          *
1062          * @author David A. Velasco
1063          * {@link BroadcastReceiver} to enable upload feedback in UI
1064          */
1065         @Override
1066         public void onReceive(Context context, Intent intent) {
1067             try {
1068                 String uploadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
1069                 String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
1070                 boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
1071                 OCFile currentDir = getCurrentDir();
1072                 boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null) &&
1073                         (uploadedRemotePath.startsWith(currentDir.getRemotePath()));
1074
1075                 if (sameAccount && isDescendant) {
1076                     refreshListOfFilesFragment();
1077                 }
1078
1079                 boolean uploadWasFine = intent.getBooleanExtra(FileUploader.EXTRA_UPLOAD_RESULT, false);
1080                 boolean renamedInUpload = getFile().getRemotePath().
1081                         equals(intent.getStringExtra(FileUploader.EXTRA_OLD_REMOTE_PATH));
1082                 boolean sameFile = getFile().getRemotePath().equals(uploadedRemotePath) ||
1083                         renamedInUpload;
1084                 FileFragment details = getSecondFragment();
1085                 boolean detailFragmentIsShown = (details != null &&
1086                         details instanceof FileDetailFragment);
1087
1088                 if (sameAccount && sameFile && detailFragmentIsShown) {
1089                     if (uploadWasFine) {
1090                         setFile(getStorageManager().getFileByPath(uploadedRemotePath));
1091                     }
1092                     if (renamedInUpload) {
1093                         String newName = (new File(uploadedRemotePath)).getName();
1094                         Toast msg = Toast.makeText(
1095                                 context,
1096                                 String.format(
1097                                         getString(R.string.filedetails_renamed_in_upload_msg),
1098                                         newName),
1099                                 Toast.LENGTH_LONG);
1100                         msg.show();
1101                     }
1102                     if (uploadWasFine || getFile().fileExists()) {
1103                         ((FileDetailFragment) details).updateFileDetails(false, true);
1104                     } else {
1105                         cleanSecondFragment();
1106                     }
1107
1108                     // Force the preview if the file is an image or text file
1109                     if (uploadWasFine) {
1110                         OCFile ocFile = getFile();
1111                         if (PreviewImageFragment.canBePreviewed(ocFile))
1112                             startImagePreview(getFile());
1113                         else if (PreviewTextFragment.canBePreviewed(ocFile))
1114                             startTextPreview(ocFile);
1115                         // TODO what about other kind of previews?
1116                     }
1117                 }
1118
1119             } finally {
1120                 if (intent != null) {
1121                     removeStickyBroadcast(intent);
1122                 }
1123             }
1124
1125         }
1126
1127     }
1128
1129
1130     /**
1131      * Class waiting for broadcast events from the {@link FileDownloader} service.
1132      * <p/>
1133      * Updates the UI when a download is started or finished, provided that it is relevant for the
1134      * current folder.
1135      */
1136     private class DownloadFinishReceiver extends BroadcastReceiver {
1137         @Override
1138         public void onReceive(Context context, Intent intent) {
1139             try {
1140                 boolean sameAccount = isSameAccount(context, intent);
1141                 String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
1142                 boolean isDescendant = isDescendant(downloadedRemotePath);
1143
1144                 if (sameAccount && isDescendant) {
1145                     refreshListOfFilesFragment();
1146                     refreshSecondFragment(intent.getAction(), downloadedRemotePath, intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
1147                 }
1148
1149                 if (mWaitingToSend != null) {
1150                     mWaitingToSend = getStorageManager().getFileByPath(mWaitingToSend.getRemotePath()); // Update the file to send
1151                     if (mWaitingToSend.isDown()) {
1152                         sendDownloadedFile();
1153                     }
1154                 }
1155
1156             } finally {
1157                 if (intent != null) {
1158                     removeStickyBroadcast(intent);
1159                 }
1160             }
1161         }
1162
1163         private boolean isDescendant(String downloadedRemotePath) {
1164             OCFile currentDir = getCurrentDir();
1165             return (currentDir != null && downloadedRemotePath != null && downloadedRemotePath.startsWith(currentDir.getRemotePath()));
1166         }
1167
1168         private boolean isSameAccount(Context context, Intent intent) {
1169             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
1170             return (accountName != null && getAccount() != null && accountName.equals(getAccount().name));
1171         }
1172     }
1173
1174
1175     public void browseToRoot() {
1176         OCFileListFragment listOfFiles = getListOfFilesFragment();
1177         if (listOfFiles != null) {  // should never be null, indeed
1178             while (mDirectories.getCount() > 1) {
1179                 popDirname();
1180             }
1181             OCFile root = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
1182             listOfFiles.listDirectory(root);
1183             setFile(listOfFiles.getCurrentFile());
1184             startSyncFolderOperation(root, false);
1185         }
1186         cleanSecondFragment();
1187     }
1188
1189
1190     public void browseTo(OCFile folder) {
1191         if (folder == null || !folder.isFolder()) {
1192             throw new IllegalArgumentException("Trying to browse to invalid folder " + folder);
1193         }
1194         OCFileListFragment listOfFiles = getListOfFilesFragment();
1195         if (listOfFiles != null) {
1196             setNavigationListWithFolder(folder);
1197             listOfFiles.listDirectory(folder);
1198             setFile(listOfFiles.getCurrentFile());
1199             startSyncFolderOperation(folder, false);
1200         } else {
1201             Log_OC.e(TAG, "Unexpected null when accessing list fragment");
1202         }
1203         cleanSecondFragment();
1204     }
1205
1206
1207     /**
1208      * {@inheritDoc}
1209      * <p/>
1210      * Updates action bar and second fragment, if in dual pane mode.
1211      */
1212     @Override
1213     public void onBrowsedDownTo(OCFile directory) {
1214         pushDirname(directory);
1215         cleanSecondFragment();
1216
1217         // Sync Folder
1218         startSyncFolderOperation(directory, false);
1219
1220     }
1221
1222     /**
1223      * Shows the information of the {@link OCFile} received as a
1224      * parameter in the second fragment.
1225      *
1226      * @param file {@link OCFile} whose details will be shown
1227      */
1228     @Override
1229     public void showDetails(OCFile file) {
1230         Fragment detailFragment = new FileDetailFragment(file, getAccount());
1231         setSecondFragment(detailFragment);
1232         updateFragmentsVisibility(true);
1233         updateNavigationElementsInActionBar(file);
1234         setFile(file);
1235     }
1236
1237
1238     /**
1239      * TODO
1240      */
1241     private void updateNavigationElementsInActionBar(OCFile chosenFile) {
1242         ActionBar actionBar = getSupportActionBar();
1243         if (chosenFile == null || mDualPane) {
1244             // only list of files - set for browsing through folders
1245             OCFile currentDir = getCurrentDir();
1246             boolean noRoot = (currentDir != null && currentDir.getParentId() != 0);
1247             actionBar.setDisplayHomeAsUpEnabled(noRoot);
1248             actionBar.setDisplayShowTitleEnabled(!noRoot);
1249             if (!noRoot) {
1250                 actionBar.setTitle(getString(R.string.default_display_name_for_root_folder));
1251             }
1252             actionBar.setNavigationMode(!noRoot ? ActionBar.NAVIGATION_MODE_STANDARD : ActionBar.NAVIGATION_MODE_LIST);
1253             actionBar.setListNavigationCallbacks(mDirectories, this);   // assuming mDirectories is updated
1254
1255         } else {
1256             actionBar.setDisplayHomeAsUpEnabled(true);
1257             actionBar.setDisplayShowTitleEnabled(true);
1258             actionBar.setTitle(chosenFile.getFileName());
1259             actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
1260         }
1261     }
1262
1263
1264     @Override
1265     protected ServiceConnection newTransferenceServiceConnection() {
1266         return new ListServiceConnection();
1267     }
1268
1269     /**
1270      * Defines callbacks for service binding, passed to bindService()
1271      */
1272     private class ListServiceConnection implements ServiceConnection {
1273
1274         @Override
1275         public void onServiceConnected(ComponentName component, IBinder service) {
1276             if (component.equals(new ComponentName(FileDisplayActivity.this, FileDownloader.class))) {
1277                 Log_OC.d(TAG, "Download service connected");
1278                 mDownloaderBinder = (FileDownloaderBinder) service;
1279                 if (mWaitingToPreview != null)
1280                     if (getStorageManager() != null) {
1281                         mWaitingToPreview = getStorageManager().getFileById(mWaitingToPreview.getFileId()); // update the file
1282                         if (!mWaitingToPreview.isDown()) {
1283                             requestForDownload();
1284                         }
1285                     }
1286
1287             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
1288                 Log_OC.d(TAG, "Upload service connected");
1289                 mUploaderBinder = (FileUploaderBinder) service;
1290             } else {
1291                 return;
1292             }
1293             // a new chance to get the mDownloadBinder through getFileDownloadBinder() - THIS IS A MESS
1294             OCFileListFragment listOfFiles = getListOfFilesFragment();
1295             if (listOfFiles != null) {
1296                 listOfFiles.listDirectory();
1297             }
1298             FileFragment secondFragment = getSecondFragment();
1299             if (secondFragment != null && secondFragment instanceof FileDetailFragment) {
1300                 FileDetailFragment detailFragment = (FileDetailFragment) secondFragment;
1301                 detailFragment.listenForTransferProgress();
1302                 detailFragment.updateFileDetails(false, false);
1303             }
1304         }
1305
1306         @Override
1307         public void onServiceDisconnected(ComponentName component) {
1308             if (component.equals(new ComponentName(FileDisplayActivity.this, FileDownloader.class))) {
1309                 Log_OC.d(TAG, "Download service disconnected");
1310                 mDownloaderBinder = null;
1311             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
1312                 Log_OC.d(TAG, "Upload service disconnected");
1313                 mUploaderBinder = null;
1314             }
1315         }
1316     }
1317
1318     ;
1319
1320
1321     /**
1322      * Launch an intent to request the PIN code to the user before letting him use the app
1323      */
1324     private void requestPinCode() {
1325         boolean pinStart = false;
1326         SharedPreferences appPrefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1327         pinStart = appPrefs.getBoolean("set_pincode", false);
1328         if (pinStart) {
1329             Intent i = new Intent(getApplicationContext(), PinCodeActivity.class);
1330             i.putExtra(PinCodeActivity.EXTRA_ACTIVITY, "FileDisplayActivity");
1331             startActivity(i);
1332         }
1333     }
1334
1335
1336     @Override
1337     public void onSavedCertificate() {
1338         startSyncFolderOperation(getCurrentDir(), false);
1339     }
1340
1341
1342     @Override
1343     public void onFailedSavingCertificate() {
1344         showDialog(DIALOG_CERT_NOT_SAVED);
1345     }
1346
1347     @Override
1348     public void onCancelCertificate() {
1349         // nothing to do
1350     }
1351
1352     /**
1353      * Updates the view associated to the activity after the finish of some operation over files
1354      * in the current account.
1355      *
1356      * @param operation Removal operation performed.
1357      * @param result    Result of the removal.
1358      */
1359     @Override
1360     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
1361         super.onRemoteOperationFinish(operation, result);
1362
1363         if (operation instanceof RemoveFileOperation) {
1364             onRemoveFileOperationFinish((RemoveFileOperation) operation, result);
1365
1366         } else if (operation instanceof RenameFileOperation) {
1367             onRenameFileOperationFinish((RenameFileOperation) operation, result);
1368
1369         } else if (operation instanceof SynchronizeFileOperation) {
1370             onSynchronizeFileOperationFinish((SynchronizeFileOperation) operation, result);
1371
1372         } else if (operation instanceof CreateFolderOperation) {
1373             onCreateFolderOperationFinish((CreateFolderOperation) operation, result);
1374
1375         } else if (operation instanceof CreateShareOperation) {
1376             onCreateShareOperationFinish((CreateShareOperation) operation, result);
1377
1378         } else if (operation instanceof UnshareLinkOperation) {
1379             onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
1380
1381         } else if (operation instanceof MoveFileOperation) {
1382             onMoveFileOperationFinish((MoveFileOperation) operation, result);
1383         }
1384
1385     }
1386
1387
1388     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
1389         if (result.isSuccess()) {
1390             refreshShowDetails();
1391             refreshListOfFilesFragment();
1392         }
1393     }
1394
1395
1396     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
1397         if (result.isSuccess()) {
1398             refreshShowDetails();
1399             refreshListOfFilesFragment();
1400
1401         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
1402             cleanSecondFragment();
1403             refreshListOfFilesFragment();
1404         }
1405     }
1406
1407     private void refreshShowDetails() {
1408         FileFragment details = getSecondFragment();
1409         if (details != null) {
1410             OCFile file = details.getFile();
1411             if (file != null) {
1412                 file = getStorageManager().getFileByPath(file.getRemotePath());
1413                 if (details instanceof PreviewMediaFragment) {
1414                     // Refresh  OCFile of the fragment
1415                     ((PreviewMediaFragment) details).updateFile(file);
1416                 } else if (details instanceof PreviewTextFragment) {
1417                     // Refresh  OCFile of the fragment
1418                     ((PreviewTextFragment) details).updateFile(file);
1419                 } else
1420                     showDetails(file);
1421             }
1422             invalidateOptionsMenu();
1423         }
1424     }
1425
1426     /**
1427      * Updates the view associated to the activity after the finish of an operation trying to remove a
1428      * file.
1429      *
1430      * @param operation Removal operation performed.
1431      * @param result    Result of the removal.
1432      */
1433     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
1434         dismissLoadingDialog();
1435
1436         Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
1437                 Toast.LENGTH_LONG);
1438         msg.show();
1439
1440         if (result.isSuccess()) {
1441             OCFile removedFile = operation.getFile();
1442             FileFragment second = getSecondFragment();
1443             if (second != null && removedFile.equals(second.getFile())) {
1444                 if (second instanceof PreviewMediaFragment) {
1445                     ((PreviewMediaFragment) second).stopPreview(true);
1446                 }
1447                 setFile(getStorageManager().getFileById(removedFile.getParentId()));
1448                 cleanSecondFragment();
1449             }
1450             if (getStorageManager().getFileById(removedFile.getParentId()).equals(getCurrentDir())) {
1451                 refreshListOfFilesFragment();
1452             }
1453             invalidateOptionsMenu();
1454         } else {
1455             if (result.isSslRecoverableException()) {
1456                 mLastSslUntrustedServerResult = result;
1457                 showUntrustedCertDialog(mLastSslUntrustedServerResult);
1458             }
1459         }
1460     }
1461
1462
1463     /**
1464      * Updates the view associated to the activity after the finish of an operation trying to move a
1465      * file.
1466      *
1467      * @param operation Move operation performed.
1468      * @param result    Result of the move operation.
1469      */
1470     private void onMoveFileOperationFinish(MoveFileOperation operation, RemoteOperationResult result) {
1471         if (result.isSuccess()) {
1472             dismissLoadingDialog();
1473             refreshListOfFilesFragment();
1474         } else {
1475             dismissLoadingDialog();
1476             try {
1477                 Toast msg = Toast.makeText(FileDisplayActivity.this,
1478                         ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
1479                         Toast.LENGTH_LONG);
1480                 msg.show();
1481
1482             } catch (NotFoundException e) {
1483                 Log_OC.e(TAG, "Error while trying to show fail message ", e);
1484             }
1485         }
1486     }
1487
1488
1489     /**
1490      * Updates the view associated to the activity after the finish of an operation trying to rename a
1491      * file.
1492      *
1493      * @param operation Renaming operation performed.
1494      * @param result    Result of the renaming.
1495      */
1496     private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
1497         dismissLoadingDialog();
1498         OCFile renamedFile = operation.getFile();
1499         if (result.isSuccess()) {
1500             FileFragment details = getSecondFragment();
1501             if (details != null) {
1502                 if (details instanceof FileDetailFragment && renamedFile.equals(details.getFile())) {
1503                     ((FileDetailFragment) details).updateFileDetails(renamedFile, getAccount());
1504                     showDetails(renamedFile);
1505
1506                 } else if (details instanceof PreviewMediaFragment && renamedFile.equals(details.getFile())) {
1507                     ((PreviewMediaFragment) details).updateFile(renamedFile);
1508                     if (PreviewMediaFragment.canBePreviewed(renamedFile)) {
1509                         int position = ((PreviewMediaFragment) details).getPosition();
1510                         startMediaPreview(renamedFile, position, true);
1511                     } else {
1512                         getFileOperationsHelper().openFile(renamedFile);
1513                     }
1514                 } else if (details instanceof PreviewTextFragment && renamedFile.equals(details.getFile())) {
1515                     ((PreviewTextFragment) details).updateFile(renamedFile);
1516                     if (PreviewTextFragment.canBePreviewed(renamedFile)) {
1517                         startTextPreview(renamedFile);
1518                     } else {
1519                         getFileOperationsHelper().openFile(renamedFile);
1520                     }
1521                 }
1522             }
1523
1524             if (getStorageManager().getFileById(renamedFile.getParentId()).equals(getCurrentDir())) {
1525                 refreshListOfFilesFragment();
1526             }
1527
1528         } else {
1529             Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
1530                     Toast.LENGTH_LONG);
1531             msg.show();
1532
1533             if (result.isSslRecoverableException()) {
1534                 mLastSslUntrustedServerResult = result;
1535                 showUntrustedCertDialog(mLastSslUntrustedServerResult);
1536             }
1537         }
1538     }
1539
1540     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation, RemoteOperationResult result) {
1541         dismissLoadingDialog();
1542         OCFile syncedFile = operation.getLocalFile();
1543         if (!result.isSuccess()) {
1544             if (result.getCode() == ResultCode.SYNC_CONFLICT) {
1545                 Intent i = new Intent(this, ConflictsResolveActivity.class);
1546                 i.putExtra(ConflictsResolveActivity.EXTRA_FILE, syncedFile);
1547                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, getAccount());
1548                 startActivity(i);
1549
1550             }
1551
1552         } else {
1553             if (operation.transferWasRequested()) {
1554                 onTransferStateChanged(syncedFile, true, true);
1555
1556             } else {
1557                 Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
1558                         Toast.LENGTH_LONG);
1559                 msg.show();
1560             }
1561         }
1562     }
1563
1564     /**
1565      * Updates the view associated to the activity after the finish of an operation trying create a new folder
1566      *
1567      * @param operation Creation operation performed.
1568      * @param result    Result of the creation.
1569      */
1570     private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
1571         if (result.isSuccess()) {
1572             dismissLoadingDialog();
1573             refreshListOfFilesFragment();
1574         } else {
1575             dismissLoadingDialog();
1576             try {
1577                 Toast msg = Toast.makeText(FileDisplayActivity.this,
1578                         ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
1579                         Toast.LENGTH_LONG);
1580                 msg.show();
1581
1582             } catch (NotFoundException e) {
1583                 Log_OC.e(TAG, "Error while trying to show fail message ", e);
1584             }
1585         }
1586     }
1587
1588
1589     /**
1590      * {@inheritDoc}
1591      */
1592     @Override
1593     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
1594         refreshListOfFilesFragment();
1595         FileFragment details = getSecondFragment();
1596         if (details != null && details instanceof FileDetailFragment && file.equals(details.getFile())) {
1597             if (downloading || uploading) {
1598                 ((FileDetailFragment) details).updateFileDetails(file, getAccount());
1599             } else {
1600                 if (!file.fileExists()) {
1601                     cleanSecondFragment();
1602                 } else {
1603                     ((FileDetailFragment) details).updateFileDetails(false, true);
1604                 }
1605             }
1606         }
1607
1608     }
1609
1610
1611     private void requestForDownload() {
1612         Account account = getAccount();
1613         if (!mDownloaderBinder.isDownloading(account, mWaitingToPreview)) {
1614             Intent i = new Intent(this, FileDownloader.class);
1615             i.putExtra(FileDownloader.EXTRA_ACCOUNT, account);
1616             i.putExtra(FileDownloader.EXTRA_FILE, mWaitingToPreview);
1617             startService(i);
1618         }
1619     }
1620
1621
1622     private OCFile getCurrentDir() {
1623         OCFile file = getFile();
1624         if (file != null) {
1625             if (file.isFolder()) {
1626                 return file;
1627             } else if (getStorageManager() != null) {
1628                 String parentPath = file.getRemotePath().substring(0, file.getRemotePath().lastIndexOf(file.getFileName()));
1629                 return getStorageManager().getFileByPath(parentPath);
1630             }
1631         }
1632         return null;
1633     }
1634
1635     public void startSyncFolderOperation(OCFile folder, boolean ignoreETag) {
1636         long currentSyncTime = System.currentTimeMillis();
1637
1638         mSyncInProgress = true;
1639
1640         // perform folder synchronization
1641         RemoteOperation synchFolderOp = new SynchronizeFolderOperation(folder,
1642                 currentSyncTime,
1643                 false,
1644                 getFileOperationsHelper().isSharedSupported(),
1645                 ignoreETag,
1646                 getStorageManager(),
1647                 getAccount(),
1648                 getApplicationContext()
1649         );
1650         synchFolderOp.execute(getAccount(), this, null, null);
1651
1652         setSupportProgressBarIndeterminateVisibility(true);
1653
1654         setBackgroundText();
1655     }
1656
1657     /**
1658      * Show untrusted cert dialog
1659      */
1660     public void showUntrustedCertDialog(RemoteOperationResult result) {
1661         // Show a dialog with the certificate info
1662         SslUntrustedCertDialog dialog = SslUntrustedCertDialog.newInstanceForFullSslError((CertificateCombinedException) result.getException());
1663         FragmentManager fm = getSupportFragmentManager();
1664         FragmentTransaction ft = fm.beginTransaction();
1665         dialog.show(ft, DIALOG_UNTRUSTED_CERT);
1666     }
1667
1668     private void requestForDownload(OCFile file) {
1669         Account account = getAccount();
1670         if (!mDownloaderBinder.isDownloading(account, file)) {
1671             Intent i = new Intent(this, FileDownloader.class);
1672             i.putExtra(FileDownloader.EXTRA_ACCOUNT, account);
1673             i.putExtra(FileDownloader.EXTRA_FILE, file);
1674             startService(i);
1675         }
1676     }
1677
1678     private void sendDownloadedFile() {
1679         getFileOperationsHelper().sendDownloadedFile(mWaitingToSend);
1680         mWaitingToSend = null;
1681     }
1682
1683
1684     /**
1685      * Requests the download of the received {@link OCFile} , updates the UI
1686      * to monitor the download progress and prepares the activity to send the file
1687      * when the download finishes.
1688      *
1689      * @param file {@link OCFile} to download and preview.
1690      */
1691     public void startDownloadForSending(OCFile file) {
1692         mWaitingToSend = file;
1693         requestForDownload(mWaitingToSend);
1694         boolean hasSecondFragment = (getSecondFragment() != null);
1695         updateFragmentsVisibility(hasSecondFragment);
1696     }
1697
1698     /**
1699      * Opens the image gallery showing the image {@link OCFile} received as parameter.
1700      *
1701      * @param file Image {@link OCFile} to show.
1702      */
1703     public void startImagePreview(OCFile file) {
1704         Intent showDetailsIntent = new Intent(this, PreviewImageActivity.class);
1705         showDetailsIntent.putExtra(EXTRA_FILE, file);
1706         showDetailsIntent.putExtra(EXTRA_ACCOUNT, getAccount());
1707         startActivity(showDetailsIntent);
1708     }
1709
1710     /**
1711      * Stars the preview of an already down media {@link OCFile}.
1712      *
1713      * @param file                  Media {@link OCFile} to preview.
1714      * @param startPlaybackPosition Media position where the playback will be started, in milliseconds.
1715      * @param autoplay              When 'true', the playback will start without user interactions.
1716      */
1717     public void startMediaPreview(OCFile file, int startPlaybackPosition, boolean autoplay) {
1718         Fragment mediaFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
1719         setSecondFragment(mediaFragment);
1720         updateFragmentsVisibility(true);
1721         updateNavigationElementsInActionBar(file);
1722         setFile(file);
1723     }
1724
1725     /**
1726      * Stars the preview of a text file {@link OCFile}.
1727      *
1728      * @param file Text {@link OCFile} to preview.
1729      */
1730     public void startTextPreview(OCFile file) {
1731         Bundle args = new Bundle();
1732         args.putParcelable(EXTRA_FILE, file);
1733         args.putParcelable(EXTRA_ACCOUNT, getAccount());
1734         Fragment textPreviewFragment = Fragment.instantiate(getApplicationContext(), PreviewTextFragment.class.getName(), args);
1735         setSecondFragment(textPreviewFragment);
1736         updateFragmentsVisibility(true);
1737         updateNavigationElementsInActionBar(file);
1738         setFile(file);
1739     }
1740
1741     /**
1742      * Requests the download of the received {@link OCFile} , updates the UI
1743      * to monitor the download progress and prepares the activity to preview
1744      * or open the file when the download finishes.
1745      *
1746      * @param file {@link OCFile} to download and preview.
1747      */
1748     public void startDownloadForPreview(OCFile file) {
1749         Fragment detailFragment = new FileDetailFragment(file, getAccount());
1750         setSecondFragment(detailFragment);
1751         mWaitingToPreview = file;
1752         requestForDownload();
1753         updateFragmentsVisibility(true);
1754         updateNavigationElementsInActionBar(file);
1755         setFile(file);
1756     }
1757
1758
1759     public void cancelTransference(OCFile file) {
1760         getFileOperationsHelper().cancelTransference(file);
1761         if (mWaitingToPreview != null &&
1762                 mWaitingToPreview.getRemotePath().equals(file.getRemotePath())) {
1763             mWaitingToPreview = null;
1764         }
1765         if (mWaitingToSend != null &&
1766                 mWaitingToSend.getRemotePath().equals(file.getRemotePath())) {
1767             mWaitingToSend = null;
1768         }
1769         onTransferStateChanged(file, false, false);
1770     }
1771
1772     @Override
1773     public void onRefresh(boolean ignoreETag) {
1774         refreshList(ignoreETag);
1775     }
1776
1777     @Override
1778     public void onRefresh() {
1779         refreshList(true);
1780     }
1781
1782     private void refreshList(boolean ignoreETag) {
1783         OCFileListFragment listOfFiles = getListOfFilesFragment();
1784         if (listOfFiles != null) {
1785             OCFile folder = listOfFiles.getCurrentFile();
1786             if (folder != null) {
1787                 /*mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
1788                 listDirectory(mFile);*/
1789                 startSyncFolderOperation(folder, ignoreETag);
1790             }
1791         }
1792     }
1793 }