Merge branch 'us4_view_text_files' of github.com:owncloudChalmers/android into us4_vi...
[pub/Android/ownCloud.git] / src / com / owncloud / android / ui / activity / FileDisplayActivity.java
index 6cfa56c..627d40c 100644 (file)
@@ -1,6 +1,6 @@
 /* ownCloud Android client application
  *   Copyright (C) 2011  Bartek Przybylski
- *   Copyright (C) 2012-2013 ownCloud Inc.
+ *   Copyright (C) 2012-2014 ownCloud Inc.
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License version 2,
 
 package com.owncloud.android.ui.activity;
 
-import java.io.File;
-
 import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.accounts.AuthenticatorException;
+import android.accounts.OperationCanceledException;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.ProgressDialog;
@@ -44,8 +45,6 @@ import android.provider.MediaStore;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
-//import android.support.v4.content.LocalBroadcastManager;
-import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
@@ -58,27 +57,35 @@ import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
 import com.actionbarsherlock.view.Window;
+import com.owncloud.android.BuildConfig;
 import com.owncloud.android.MainApp;
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.files.services.FileDownloader;
-import com.owncloud.android.files.services.FileObserverService;
-import com.owncloud.android.files.services.FileUploader;
 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
+import com.owncloud.android.files.services.FileUploader;
 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
-import com.owncloud.android.operations.CreateFolderOperation;
-
+import com.owncloud.android.lib.common.OwnCloudAccount;
+import com.owncloud.android.lib.common.OwnCloudClient;
+import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
+import com.owncloud.android.lib.common.OwnCloudCredentials;
+import com.owncloud.android.lib.common.accounts.AccountUtils.AccountNotFoundException;
 import com.owncloud.android.lib.common.network.CertificateCombinedException;
 import com.owncloud.android.lib.common.operations.RemoteOperation;
 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
+import com.owncloud.android.lib.common.utils.Log_OC;
+import com.owncloud.android.operations.CreateFolderOperation;
 import com.owncloud.android.operations.CreateShareOperation;
+import com.owncloud.android.operations.MoveFileOperation;
 import com.owncloud.android.operations.RemoveFileOperation;
 import com.owncloud.android.operations.RenameFileOperation;
 import com.owncloud.android.operations.SynchronizeFileOperation;
 import com.owncloud.android.operations.SynchronizeFolderOperation;
 import com.owncloud.android.operations.UnshareLinkOperation;
+import com.owncloud.android.services.observer.FileObserverService;
 import com.owncloud.android.syncadapter.FileSyncAdapter;
+import com.owncloud.android.ui.adapter.FileListListAdapter;
 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
 import com.owncloud.android.ui.dialog.SslUntrustedCertDialog;
 import com.owncloud.android.ui.dialog.SslUntrustedCertDialog.OnSslUntrustedCertListener;
@@ -88,20 +95,25 @@ import com.owncloud.android.ui.fragment.OCFileListFragment;
 import com.owncloud.android.ui.preview.PreviewImageActivity;
 import com.owncloud.android.ui.preview.PreviewImageFragment;
 import com.owncloud.android.ui.preview.PreviewMediaFragment;
+import com.owncloud.android.ui.preview.PreviewTextFragment;
 import com.owncloud.android.ui.preview.PreviewVideoActivity;
 import com.owncloud.android.utils.DisplayUtils;
-import com.owncloud.android.utils.Log_OC;
+import com.owncloud.android.utils.ErrorMessageAdapter;
+
+import java.io.File;
+import java.io.IOException;
 
 
 /**
  * Displays, what files the user has available in his ownCloud.
- * 
+ *
  * @author Bartek Przybylski
  * @author David A. Velasco
  */
 
 public class FileDisplayActivity extends HookActivity implements
-FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener {
+        FileFragment.ContainerActivity, OnNavigationListener,
+        OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     private ArrayAdapter<String> mDirectories;
 
@@ -121,11 +133,12 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     public static final int DIALOG_SHORT_WAIT = 0;
     private static final int DIALOG_CHOOSE_UPLOAD_SOURCE = 1;
     private static final int DIALOG_CERT_NOT_SAVED = 2;
-    
+
     public static final String ACTION_DETAILS = "com.owncloud.android.ui.activity.action.DETAILS";
 
     private static final int ACTION_SELECT_CONTENT_FROM_APPS = 1;
     private static final int ACTION_SELECT_MULTIPLE_FILES = 2;
+    public static final int ACTION_MOVE_FILES = 3;
 
     private static final String TAG = FileDisplayActivity.class.getSimpleName();
 
@@ -133,11 +146,11 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     private static final String TAG_SECOND_FRAGMENT = "SECOND_FRAGMENT";
 
     private OCFile mWaitingToPreview;
-    
+
     private boolean mSyncInProgress = false;
 
     private String DIALOG_UNTRUSTED_CERT;
-    
+
     private OCFile mWaitingToSend;
 
     @Override
@@ -154,47 +167,45 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             requestPinCode();
         }
 
-        /// file observer
-        Intent observer_intent = new Intent(this, FileObserverService.class);
-        observer_intent.putExtra(FileObserverService.KEY_FILE_CMD, FileObserverService.CMD_INIT_OBSERVED_LIST);
-        startService(observer_intent);
+        /// grant that FileObserverService is watching favourite files
+        if (savedInstanceState == null) {
+            Intent initObserversIntent = FileObserverService.makeInitIntent(this);
+            startService(initObserversIntent);
+        }
 
         /// Load of saved instance state
-        if(savedInstanceState != null) {
+        if (savedInstanceState != null) {
             mWaitingToPreview = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW);
             mSyncInProgress = savedInstanceState.getBoolean(KEY_SYNC_IN_PROGRESS);
             mWaitingToSend = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_SEND);
-           
+
         } else {
             mWaitingToPreview = null;
             mSyncInProgress = false;
             mWaitingToSend = null;
-        }        
+        }
 
         /// USER INTERFACE
 
         // Inflate and set the layout view
-        setContentView(R.layout.files);    
+        setContentView(R.layout.files);
         mDualPane = getResources().getBoolean(R.bool.large_land_layout);
         mLeftFragmentContainer = findViewById(R.id.left_fragment_container);
         mRightFragmentContainer = findViewById(R.id.right_fragment_container);
         if (savedInstanceState == null) {
             createMinFragments();
-        } else {
-            Log_OC.d(TAG, "Init the secondFragment again");
-            if (mDualPane) {
-                initFragmentsWithFile();                
-            }
         }
 
         // Action bar setup
         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
         getSupportActionBar().setHomeButtonEnabled(true);       // mandatory since Android ICS, according to the official documentation
         setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);    // always AFTER setContentView(...) ; to work around bug in its implementation
-        
+
+        setBackgroundText();
+
         Log_OC.d(TAG, "onCreate() end");
     }
-    
+
     @Override
     protected void onStart() {
         super.onStart();
@@ -207,8 +218,8 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     }
 
     /**
-     *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
-     */ 
+     * Called when the ownCloud {@link Account} associated to the Activity was just updated.
+     */
     @Override
     protected void onAccountSet(boolean stateWasRecovered) {
         super.onAccountSet(stateWasRecovered);
@@ -222,7 +233,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                     // upload in progress - right now, files are not inserted in the local cache until the upload is successful
                     // get parent from path
                     parentPath = file.getRemotePath().substring(0, file.getRemotePath().lastIndexOf(file.getFileName()));
-                    if (getStorageManager().getFileByPath(parentPath) ==  null)
+                    if (getStorageManager().getFileByPath(parentPath) == null)
                         file = null; // not able to know the directory where the file is uploading
                 } else {
                     file = getStorageManager().getFileByPath(file.getRemotePath());   // currentDir = null if not in the current Account
@@ -234,14 +245,14 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             }
             setFile(file);
             setNavigationListWithFolder(file);
-            
+
             if (!stateWasRecovered) {
                 Log_OC.e(TAG, "Initializing Fragments in onAccountChanged..");
                 initFragmentsWithFile();
                 if (file.isFolder()) {
-                    startSyncFolderOperation(file);
+                    startSyncFolderOperation(file, false);
                 }
-                
+
             } else {
                 updateFragmentsVisibility(!file.isFolder());
                 updateNavigationElementsInActionBar(file.isFolder() ? null : file);
@@ -254,7 +265,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         mDirectories.clear();
         OCFile fileIt = file;
         String parentPath;
-        while(fileIt != null && fileIt.getFileName() != OCFile.ROOT_PATH) {
+        while (fileIt != null && fileIt.getFileName() != OCFile.ROOT_PATH) {
             if (fileIt.isFolder()) {
                 mDirectories.add(fileIt.getFileName());
             }
@@ -272,36 +283,38 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         transaction.add(R.id.left_fragment_container, listOfFiles, TAG_LIST_OF_FILES);
         transaction.commit();
     }
-    
+
     private void initFragmentsWithFile() {
         if (getAccount() != null && getFile() != null) {
             /// First fragment
-            OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+            OCFileListFragment listOfFiles = getListOfFilesFragment();
             if (listOfFiles != null) {
-                listOfFiles.listDirectory(getCurrentDir());   
+                listOfFiles.listDirectory(getCurrentDir());
             } else {
-                Log.e(TAG, "Still have a chance to lose the initializacion of list fragment >(");
+                Log_OC.e(TAG, "Still have a chance to lose the initializacion of list fragment >(");
             }
-            
+
             /// Second fragment
-            OCFile file = getFile(); 
+            OCFile file = getFile();
             Fragment secondFragment = chooseInitialSecondFragment(file);
             if (secondFragment != null) {
                 setSecondFragment(secondFragment);
                 updateFragmentsVisibility(true);
                 updateNavigationElementsInActionBar(file);
-                
+
             } else {
                 cleanSecondFragment();
+                if (file.isDown() && PreviewTextFragment.canBePreviewed(file))
+                    startTextPreview(file);
             }
 
         } else {
-            Log.wtf(TAG, "initFragments() called with invalid NULLs!");
+            Log_OC.wtf(TAG, "initFragments() called with invalid NULLs!");
             if (getAccount() == null) {
-                Log.wtf(TAG, "\t account is NULL");
+                Log_OC.wtf(TAG, "\t account is NULL");
             }
             if (getFile() == null) {
-                Log.wtf(TAG, "\t file is NULL");
+                Log_OC.wtf(TAG, "\t file is NULL");
             }
         }
     }
@@ -309,16 +322,16 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     private Fragment chooseInitialSecondFragment(OCFile file) {
         Fragment secondFragment = null;
         if (file != null && !file.isFolder()) {
-            if (file.isDown() && PreviewMediaFragment.canBePreviewed(file) 
+            if (file.isDown() && PreviewMediaFragment.canBePreviewed(file)
                     && file.getLastSyncDateForProperties() > 0  // temporal fix
                     ) {
                 int startPlaybackPosition = getIntent().getIntExtra(PreviewVideoActivity.EXTRA_START_POSITION, 0);
                 boolean autoplay = getIntent().getBooleanExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, true);
                 secondFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
 
-            } else {
-                secondFragment = new FileDetailFragment(file, getAccount());
-            }
+            } else if (file.isDown() && PreviewTextFragment.canBePreviewed(file)) {
+                secondFragment = null;
+            } else secondFragment = new FileDetailFragment(file, getAccount());
         }
         return secondFragment;
     }
@@ -327,10 +340,10 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     /**
      * Replaces the second fragment managed by the activity with the received as
      * a parameter.
-     * 
-     * Assumes never will be more than two fragments managed at the same time. 
-     * 
-     * @param fragment      New second Fragment to set.
+     * <p/>
+     * Assumes never will be more than two fragments managed at the same time.
+     *
+     * @param fragment New second Fragment to set.
      */
     private void setSecondFragment(Fragment fragment) {
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
@@ -370,7 +383,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     private OCFileListFragment getListOfFilesFragment() {
         Fragment listOfFiles = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_LIST_OF_FILES);
         if (listOfFiles != null) {
-            return (OCFileListFragment)listOfFiles;
+            return (OCFileListFragment) listOfFiles;
         }
         Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!");
         return null;
@@ -379,7 +392,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     public FileFragment getSecondFragment() {
         Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
         if (second != null) {
-            return (FileFragment)second;
+            return (FileFragment) second;
         }
         return null;
     }
@@ -397,7 +410,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
     protected void refreshListOfFilesFragment() {
         OCFileListFragment fileListFragment = getListOfFilesFragment();
-        if (fileListFragment != null) { 
+        if (fileListFragment != null) {
             fileListFragment.listDirectory();
         }
     }
@@ -426,6 +439,9 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                         if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
                             startMediaPreview(mWaitingToPreview, 0, true);
                             detailsFragmentChanged = true;
+                        } else if (PreviewTextFragment.canBePreviewed(mWaitingToPreview)) {
+                            startTextPreview(mWaitingToPreview);
+                            detailsFragmentChanged = true;
                         } else {
                             getFileOperationsHelper().openFile(mWaitingToPreview);
                         }
@@ -440,6 +456,16 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     }
 
     @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        if (BuildConfig.DEBUG) {
+            menu.findItem(R.id.action_logger).setVisible(true);
+        } else {
+            menu.findItem(R.id.action_logger).setVisible(false);
+        }
+        return super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         MenuInflater inflater = getSherlock().getMenuInflater();
         inflater.inflate(R.menu.main_menu, menu);
@@ -450,37 +476,76 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     public boolean onOptionsItemSelected(MenuItem item) {
         boolean retval = true;
         switch (item.getItemId()) {
-        case R.id.action_create_dir: {
-            CreateFolderDialogFragment dialog = 
-                    CreateFolderDialogFragment.newInstance(getCurrentDir());
-            dialog.show(getSupportFragmentManager(), "createdirdialog");
-            break;
-        }
-        case R.id.action_sync_account: {
-            startSynchronization();
-            break;
-        }
-        case R.id.action_upload: {
-            showDialog(DIALOG_CHOOSE_UPLOAD_SOURCE);
-            break;
-        }
-        case R.id.action_settings: {
-            Intent settingsIntent = new Intent(this, Preferences.class);
-            startActivity(settingsIntent);
-            break;
-        }
-        case android.R.id.home: {
-            FileFragment second = getSecondFragment();
-            OCFile currentDir = getCurrentDir();
-            if((currentDir != null && currentDir.getParentId() != 0) || 
-                    (second != null && second.getFile() != null)) {                
-                onBackPressed(); 
-                
+            case R.id.action_create_dir: {
+                CreateFolderDialogFragment dialog =
+                        CreateFolderDialogFragment.newInstance(getCurrentDir());
+                dialog.show(getSupportFragmentManager(), "createdirdialog");
+                break;
             }
-            break;
-        }
-        default:
-            retval = super.onOptionsItemSelected(item);
+            case R.id.action_sort: {
+                SharedPreferences appPreferences = PreferenceManager
+                        .getDefaultSharedPreferences(this);
+
+                // Read sorting order, default to sort by name ascending
+                Integer sortOrder = appPreferences
+                        .getInt("sortOrder", FileListListAdapter.SORT_NAME);
+
+                AlertDialog.Builder builder = new AlertDialog.Builder(this);
+                builder.setTitle(R.string.actionbar_sort_title)
+                        .setSingleChoiceItems(R.array.actionbar_sortby, sortOrder, new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+
+                                switch (which) {
+                                    case 0:
+                                        sortByName(true);
+                                        break;
+                                    case 1:
+                                        sortByDate(false);
+                                        break;
+
+// TODO re-enable when server-side folder size calculation is available                       
+//                    case 2:
+//                        sortBySize(false);
+//                        break;
+                                }
+
+                                dialog.dismiss();
+
+                            }
+                        });
+                builder.create().show();
+                break;
+            }
+            case R.id.action_sync_account: {
+                startSynchronization();
+                break;
+            }
+            case R.id.action_upload: {
+                showDialog(DIALOG_CHOOSE_UPLOAD_SOURCE);
+                break;
+            }
+            case R.id.action_settings: {
+                Intent settingsIntent = new Intent(this, Preferences.class);
+                startActivity(settingsIntent);
+                break;
+            }
+            case R.id.action_logger: {
+                Intent loggerIntent = new Intent(getApplicationContext(), LogHistoryActivity.class);
+                startActivity(loggerIntent);
+                break;
+            }
+            case android.R.id.home: {
+                FileFragment second = getSecondFragment();
+                OCFile currentDir = getCurrentDir();
+                if ((currentDir != null && currentDir.getParentId() != 0) ||
+                        (second != null && second.getFile() != null)) {
+                    onBackPressed();
+
+                }
+                break;
+            }
+            default:
+                retval = super.onOptionsItemSelected(item);
         }
         return retval;
     }
@@ -514,19 +579,19 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     public boolean onNavigationItemSelected(int itemPosition, long itemId) {
         if (itemPosition != 0) {
             String targetPath = "";
-            for (int i=itemPosition; i < mDirectories.getCount() - 1; i++) {
-                targetPath = mDirectories.getItem(i) + OCFile.PATH_SEPARATOR + targetPath; 
+            for (int i = itemPosition; i < mDirectories.getCount() - 1; i++) {
+                targetPath = mDirectories.getItem(i) + OCFile.PATH_SEPARATOR + targetPath;
             }
             targetPath = OCFile.PATH_SEPARATOR + targetPath;
             OCFile targetFolder = getStorageManager().getFileByPath(targetPath);
             if (targetFolder != null) {
                 browseTo(targetFolder);
             }
-            
+
             // the next operation triggers a new call to this method, but it's necessary to 
             // ensure that the name exposed in the action bar is the current directory when the 
             // user selected it in the navigation list
-            if (getSupportActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST  && itemPosition != 0) 
+            if (getSupportActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST && itemPosition != 0)
                 getSupportActionBar().setSelectedNavigationItem(0);
         }
         return true;
@@ -544,6 +609,20 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         } else if (requestCode == ACTION_SELECT_MULTIPLE_FILES && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
             requestMultipleUpload(data, resultCode);
 
+        } else if (requestCode == ACTION_MOVE_FILES && (resultCode == RESULT_OK ||
+                resultCode == MoveActivity.RESULT_OK_AND_MOVE)) {
+
+            final Intent fData = data;
+            final int fResultCode = resultCode;
+            getHandler().postDelayed(
+                    new Runnable() {
+                        @Override
+                        public void run() {
+                            requestMoveOperation(fData, fResultCode);
+                        }
+                    },
+                    DELAY_TO_REQUEST_OPERATION_ON_ACTIVITY_RESULTS
+            );
         }
     }
 
@@ -557,7 +636,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             }
             if (!remotePathBase.endsWith(OCFile.PATH_SEPARATOR))
                 remotePathBase += OCFile.PATH_SEPARATOR;
-            for (int j = 0; j< remotePaths.length; j++) {
+            for (int j = 0; j < remotePaths.length; j++) {
                 remotePaths[j] = remotePathBase + (new File(filePaths[j])).getName();
             }
 
@@ -624,9 +703,21 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         startService(i);
     }
 
+    /**
+     * Request the operation for moving the file/folder from one path to another
+     *
+     * @param data       Intent received
+     * @param resultCode Result code received
+     */
+    private void requestMoveOperation(Intent data, int resultCode) {
+        OCFile folderToMoveAt = (OCFile) data.getParcelableExtra(MoveActivity.EXTRA_CURRENT_FOLDER);
+        OCFile targetFile = (OCFile) data.getParcelableExtra(MoveActivity.EXTRA_TARGET_FILE);
+        getFileOperationsHelper().moveFile(folderToMoveAt, targetFile);
+    }
+
     @Override
     public void onBackPressed() {
-        OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+        OCFileListFragment listOfFiles = getListOfFilesFragment();
         if (mDualPane || getSecondFragment() == null) {
             if (listOfFiles != null) {  // should never be null, indeed
                 if (mDirectories.getCount() <= 1) {
@@ -634,7 +725,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                     return;
                 }
                 int levelsUp = listOfFiles.onBrowseUp();
-                for (int i=0; i < levelsUp && mDirectories.getCount() > 1 ; i++) {
+                for (int i = 0; i < levelsUp && mDirectories.getCount() > 1; i++) {
                     popDirname();
                 }
             }
@@ -658,7 +749,6 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
         Log_OC.d(TAG, "onSaveInstanceState() end");
     }
-    
 
 
     @Override
@@ -666,6 +756,9 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         super.onResume();
         Log_OC.e(TAG, "onResume() start");
 
+        // refresh list of files
+        refreshListOfFilesFragment();
+
         // Listen for sync messages
         IntentFilter syncIntentFilter = new IntentFilter(FileSyncAdapter.EVENT_FULL_SYNC_START);
         syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_END);
@@ -686,14 +779,13 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         downloadIntentFilter.addAction(FileDownloader.getDownloadFinishMessage());
         mDownloadFinishReceiver = new DownloadFinishReceiver();
         registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);
-        
+
         Log_OC.d(TAG, "onResume() end");
     }
 
 
     @Override
     protected void onPause() {
-        super.onPause();
         Log_OC.e(TAG, "onPause() start");
         if (mSyncBroadcastReceiver != null) {
             unregisterReceiver(mSyncBroadcastReceiver);
@@ -708,10 +800,10 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             unregisterReceiver(mDownloadFinishReceiver);
             mDownloadFinishReceiver = null;
         }
-        
-        dismissLoadingDialog();
-        
+
+
         Log_OC.d(TAG, "onPause() end");
+        super.onPause();
     }
 
 
@@ -720,37 +812,27 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         Dialog dialog = null;
         AlertDialog.Builder builder;
         switch (id) {
-        case DIALOG_SHORT_WAIT: {
-            ProgressDialog working_dialog = new ProgressDialog(this);
-            working_dialog.setMessage(getResources().getString(
-                    R.string.wait_a_moment));
-            working_dialog.setIndeterminate(true);
-            working_dialog.setCancelable(false);
-            dialog = working_dialog;
-            break;
-        }
-        case DIALOG_CHOOSE_UPLOAD_SOURCE: {
-
-            String[] items = null;
-
-            String[] allTheItems = { getString(R.string.actionbar_upload_files),
-                    getString(R.string.actionbar_upload_from_apps),
-                    getString(R.string.actionbar_failed_instant_upload) };
+            case DIALOG_SHORT_WAIT: {
+                ProgressDialog working_dialog = new ProgressDialog(this);
+                working_dialog.setMessage(getResources().getString(
+                        R.string.wait_a_moment));
+                working_dialog.setIndeterminate(true);
+                working_dialog.setCancelable(false);
+                dialog = working_dialog;
+                break;
+            }
+            case DIALOG_CHOOSE_UPLOAD_SOURCE: {
 
-            String[] commonItems = { getString(R.string.actionbar_upload_files),
-                    getString(R.string.actionbar_upload_from_apps) };
 
-            if (InstantUploadActivity.IS_ENABLED)
-                items = allTheItems;
-            else 
-                items = commonItems;
+                String[] allTheItems = {getString(R.string.actionbar_upload_files),
+                        getString(R.string.actionbar_upload_from_apps)};
 
-            builder = new AlertDialog.Builder(this);
-            builder.setTitle(R.string.actionbar_upload);
-            builder.setItems(items, new DialogInterface.OnClickListener() {
-                public void onClick(DialogInterface dialog, int item) {
-                    if (item == 0) {
-                        // if (!mDualPane) {
+                builder = new AlertDialog.Builder(this);
+                builder.setTitle(R.string.actionbar_upload);
+                builder.setItems(allTheItems, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int item) {
+                        if (item == 0) {
+                            // if (!mDualPane) {
                             Intent action = new Intent(FileDisplayActivity.this, UploadFilesActivity.class);
                             action.putExtra(UploadFilesActivity.EXTRA_ACCOUNT, FileDisplayActivity.this.getAccount());
                             startActivityForResult(action, ACTION_SELECT_MULTIPLE_FILES);
@@ -758,36 +840,34 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                             // TODO create and handle new fragment
                             // LocalFileListFragment
                             // }
-                    } else if (item == 1) {
-                        Intent action = new Intent(Intent.ACTION_GET_CONTENT);
-                        action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
-                        startActivityForResult(Intent.createChooser(action, getString(R.string.upload_chooser_title)),
-                                ACTION_SELECT_CONTENT_FROM_APPS);
-                    } else if (item == 2 && InstantUploadActivity.IS_ENABLED) {
-                        Intent action = new Intent(FileDisplayActivity.this, InstantUploadActivity.class);
-                        action.putExtra(FileUploader.KEY_ACCOUNT, FileDisplayActivity.this.getAccount());
-                        startActivity(action);
+                        } else if (item == 1) {
+                            Intent action = new Intent(Intent.ACTION_GET_CONTENT);
+                            action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
+                            startActivityForResult(Intent.createChooser(action, getString(R.string.upload_chooser_title)),
+                                    ACTION_SELECT_CONTENT_FROM_APPS);
+                        }
                     }
-                }
-            });
-            dialog = builder.create();
-            break;
-        }
-        case DIALOG_CERT_NOT_SAVED: {
-            builder = new AlertDialog.Builder(this);
-            builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
-            builder.setCancelable(false);
-            builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
-                @Override
-                public void onClick(DialogInterface dialog, int which) {
-                    dialog.dismiss();
-                };
-            });
-            dialog = builder.create();
-            break;
-        }
-        default:
-            dialog = null;
+                });
+                dialog = builder.create();
+                break;
+            }
+            case DIALOG_CERT_NOT_SAVED: {
+                builder = new AlertDialog.Builder(this);
+                builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
+                builder.setCancelable(false);
+                builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        dialog.dismiss();
+                    }
+
+                    ;
+                });
+                dialog = builder.create();
+                break;
+            }
+            default:
+                dialog = null;
         }
 
         return dialog;
@@ -797,28 +877,30 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     /**
      * Translates a content URI of an image to a physical path
      * on the disk
+     *
      * @param uri The URI to resolve
      * @return The path to the image or null if it could not be found
      */
     public String getPath(Uri uri) {
-        String[] projection = { MediaStore.Images.Media.DATA };
+        String[] projection = {MediaStore.Images.Media.DATA};
         Cursor cursor = managedQuery(uri, projection, null, null, null);
         if (cursor != null) {
             int column_index = cursor
                     .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
             cursor.moveToFirst();
             return cursor.getString(column_index);
-        } 
+        }
         return null;
     }
 
     /**
      * Pushes a directory to the drop down list
+     *
      * @param directory to push
      * @throws IllegalArgumentException If the {@link OCFile#isFolder()} returns false.
      */
     public void pushDirname(OCFile directory) {
-        if(!directory.isFolder()){
+        if (!directory.isFolder()) {
             throw new IllegalArgumentException("Only directories may be pushed!");
         }
         mDirectories.insert(directory.getFileName(), 0);
@@ -827,6 +909,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
     /**
      * Pops a directory name from the drop down list
+     *
      * @return True, unless the stack is empty
      */
     public boolean popDirname() {
@@ -846,19 +929,19 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
-            
-            fixRoot((TextView) v );
+
+            fixRoot((TextView) v);
             return v;
         }
 
         public View getDropDownView(int position, View convertView,
-                ViewGroup parent) {
+                                    ViewGroup parent) {
             View v = super.getDropDownView(position, convertView, parent);
 
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
 
-            fixRoot((TextView) v );
+            fixRoot((TextView) v);
             return v;
         }
 
@@ -881,27 +964,27 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                 String event = intent.getAction();
                 Log_OC.d(TAG, "Received broadcast " + event);
                 String accountName = intent.getStringExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME);
-                String synchFolderRemotePath = intent.getStringExtra(FileSyncAdapter.EXTRA_FOLDER_PATH); 
-                RemoteOperationResult synchResult = (RemoteOperationResult)intent.getSerializableExtra(FileSyncAdapter.EXTRA_RESULT);
-                boolean sameAccount = (getAccount() != null && accountName.equals(getAccount().name) && getStorageManager() != null); 
-    
+                String synchFolderRemotePath = intent.getStringExtra(FileSyncAdapter.EXTRA_FOLDER_PATH);
+                RemoteOperationResult synchResult = (RemoteOperationResult) intent.getSerializableExtra(FileSyncAdapter.EXTRA_RESULT);
+                boolean sameAccount = (getAccount() != null && accountName.equals(getAccount().name) && getStorageManager() != null);
+
                 if (sameAccount) {
-                    
+
                     if (FileSyncAdapter.EVENT_FULL_SYNC_START.equals(event)) {
                         mSyncInProgress = true;
-                        
+
                     } else {
                         OCFile currentFile = (getFile() == null) ? null : getStorageManager().getFileByPath(getFile().getRemotePath());
                         OCFile currentDir = (getCurrentDir() == null) ? null : getStorageManager().getFileByPath(getCurrentDir().getRemotePath());
-    
+
                         if (currentDir == null) {
                             // current folder was removed from the server 
-                            Toast.makeText( FileDisplayActivity.this, 
-                                            String.format(getString(R.string.sync_current_folder_was_removed), mDirectories.getItem(0)), 
-                                            Toast.LENGTH_LONG)
-                                .show();
+                            Toast.makeText(FileDisplayActivity.this,
+                                    String.format(getString(R.string.sync_current_folder_was_removed), mDirectories.getItem(0)),
+                                    Toast.LENGTH_LONG)
+                                    .show();
                             browseToRoot();
-                            
+
                         } else {
                             if (currentFile == null && !getFile().isFolder()) {
                                 // currently selected file was removed in the server, and now we know it
@@ -917,15 +1000,62 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                             }
                             setFile(currentFile);
                         }
-                        
+
                         mSyncInProgress = (!FileSyncAdapter.EVENT_FULL_SYNC_END.equals(event) && !SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED.equals(event));
-                                
+
+                        if (SynchronizeFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED.
+                                equals(event) &&
+                                /// TODO refactor and make common
+                                synchResult != null && !synchResult.isSuccess() &&
+                                (synchResult.getCode() == ResultCode.UNAUTHORIZED ||
+                                        synchResult.isIdPRedirection() ||
+                                        (synchResult.isException() && synchResult.getException()
+                                                instanceof AuthenticatorException))) {
+
+                            OwnCloudClient client = null;
+                            try {
+                                OwnCloudAccount ocAccount =
+                                        new OwnCloudAccount(getAccount(), context);
+                                client = (OwnCloudClientManagerFactory.getDefaultSingleton().
+                                        removeClientFor(ocAccount));
+                                // TODO get rid of these exceptions
+                            } catch (AccountNotFoundException e) {
+                                e.printStackTrace();
+                            } catch (AuthenticatorException e) {
+                                e.printStackTrace();
+                            } catch (OperationCanceledException e) {
+                                e.printStackTrace();
+                            } catch (IOException e) {
+                                e.printStackTrace();
+                            }
+
+                            if (client != null) {
+                                OwnCloudCredentials cred = client.getCredentials();
+                                if (cred != null) {
+                                    AccountManager am = AccountManager.get(context);
+                                    if (cred.authTokenExpires()) {
+                                        am.invalidateAuthToken(
+                                                getAccount().type,
+                                                cred.getAuthToken()
+                                        );
+                                    } else {
+                                        am.clearPassword(getAccount());
+                                    }
+                                }
+                            }
+
+                            requestCredentialsUpdate();
+
                         }
-                        removeStickyBroadcast(intent);
-                        Log_OC.d(TAG, "Setting progress visibility to " + mSyncInProgress);
-                        setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);
+                    }
+                    removeStickyBroadcast(intent);
+                    Log_OC.d(TAG, "Setting progress visibility to " + mSyncInProgress);
+                    setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);
+
+                    setBackgroundText();
+
                 }
-                
+
                 if (synchResult != null) {
                     if (synchResult.getCode().equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
                         mLastSslUntrustedServerResult = synchResult;
@@ -938,7 +1068,24 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             }
         }
     }
-    
+
+    /**
+     * Show a text message on screen view for notifying user if content is
+     * loading or folder is empty
+     */
+    private void setBackgroundText() {
+        OCFileListFragment ocFileListFragment = getListOfFilesFragment();
+        if (ocFileListFragment != null) {
+            int message = R.string.file_list_loading;
+            if (!mSyncInProgress) {
+                // In case file list is empty
+                message = R.string.file_list_empty;
+            }
+            ocFileListFragment.setMessageForEmptyList(getString(message));
+        } else {
+            Log_OC.e(TAG, "OCFileListFragment is null");
+        }
+    }
 
     /**
      * Once the file upload has finished -> update view
@@ -946,90 +1093,106 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     private class UploadFinishReceiver extends BroadcastReceiver {
         /**
          * Once the file upload has finished -> update view
-         *  @author David A. Velasco
+         *
+         * @author David A. Velasco
          * {@link BroadcastReceiver} to enable upload feedback in UI
          */
         @Override
         public void onReceive(Context context, Intent intent) {
-            String uploadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
-            String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
-            boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
-            OCFile currentDir = getCurrentDir();
-            boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null) && 
-                    (uploadedRemotePath.startsWith(currentDir.getRemotePath()));
-            
-            if (sameAccount && isDescendant) {
-                refreshListOfFilesFragment();
-            }
-            
-            boolean uploadWasFine = intent.getBooleanExtra(FileUploader.EXTRA_UPLOAD_RESULT, false);
-            boolean renamedInUpload = getFile().getRemotePath().
-                    equals(intent.getStringExtra(FileUploader.EXTRA_OLD_REMOTE_PATH));
-            boolean sameFile = getFile().getRemotePath().equals(uploadedRemotePath) || 
-                    renamedInUpload;
-            FileFragment details = getSecondFragment();
-            boolean detailFragmentIsShown = (details != null && 
-                    details instanceof FileDetailFragment);
-            
-            if (sameAccount && sameFile && detailFragmentIsShown) {
-                if (uploadWasFine) {
-                    setFile(getStorageManager().getFileByPath(uploadedRemotePath));
+            try {
+                String uploadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
+                String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
+                boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
+                OCFile currentDir = getCurrentDir();
+                boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null) &&
+                        (uploadedRemotePath.startsWith(currentDir.getRemotePath()));
+
+                if (sameAccount && isDescendant) {
+                    refreshListOfFilesFragment();
                 }
-                if (renamedInUpload) {
-                    String newName = (new File(uploadedRemotePath)).getName();
-                    Toast msg = Toast.makeText(
-                            context, 
-                            String.format(
-                                    getString(R.string.filedetails_renamed_in_upload_msg), 
-                                    newName), 
-                            Toast.LENGTH_LONG);
-                    msg.show();
+
+                boolean uploadWasFine = intent.getBooleanExtra(FileUploader.EXTRA_UPLOAD_RESULT, false);
+                boolean renamedInUpload = getFile().getRemotePath().
+                        equals(intent.getStringExtra(FileUploader.EXTRA_OLD_REMOTE_PATH));
+                boolean sameFile = getFile().getRemotePath().equals(uploadedRemotePath) ||
+                        renamedInUpload;
+                FileFragment details = getSecondFragment();
+                boolean detailFragmentIsShown = (details != null &&
+                        details instanceof FileDetailFragment);
+
+                if (sameAccount && sameFile && detailFragmentIsShown) {
+                    if (uploadWasFine) {
+                        setFile(getStorageManager().getFileByPath(uploadedRemotePath));
+                    }
+                    if (renamedInUpload) {
+                        String newName = (new File(uploadedRemotePath)).getName();
+                        Toast msg = Toast.makeText(
+                                context,
+                                String.format(
+                                        getString(R.string.filedetails_renamed_in_upload_msg),
+                                        newName),
+                                Toast.LENGTH_LONG);
+                        msg.show();
+                    }
+                    if (uploadWasFine || getFile().fileExists()) {
+                        ((FileDetailFragment) details).updateFileDetails(false, true);
+                    } else {
+                        cleanSecondFragment();
+                    }
+
+                    // Force the preview if the file is an image or text file
+                    if (uploadWasFine) {
+                        OCFile ocFile = getFile();
+                        if (PreviewImageFragment.canBePreviewed(ocFile))
+                            startImagePreview(getFile());
+                        else if (PreviewTextFragment.canBePreviewed(ocFile))
+                            startTextPreview(ocFile);
+                        // TODO what about other kind of previews?
+                    }
                 }
-                if (uploadWasFine || getFile().fileExists()) {
-                    ((FileDetailFragment)details).updateFileDetails(false, true);
-                } else {
-                    cleanSecondFragment();
+
+            } finally {
+                if (intent != null) {
+                    removeStickyBroadcast(intent);
                 }
-                
-                // Force the preview if the file is an image
-                if (uploadWasFine && PreviewImageFragment.canBePreviewed(getFile())) {
-                    startImagePreview(getFile());
-                } // TODO what about other kind of previews?
             }
-        
-            removeStickyBroadcast(intent);
-            
+
         }
-        
+
     }
 
 
     /**
-     * Class waiting for broadcast events from the {@link FielDownloader} service.
-     * 
+     * Class waiting for broadcast events from the {@link FileDownloader} service.
+     * <p/>
      * Updates the UI when a download is started or finished, provided that it is relevant for the
      * current folder.
      */
     private class DownloadFinishReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(Context context, Intent intent) {
-            boolean sameAccount = isSameAccount(context, intent);
-            String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
-            boolean isDescendant = isDescendant(downloadedRemotePath);
+            try {
+                boolean sameAccount = isSameAccount(context, intent);
+                String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
+                boolean isDescendant = isDescendant(downloadedRemotePath);
 
-            if (sameAccount && isDescendant) {
-                refreshListOfFilesFragment();
-                refreshSecondFragment(intent.getAction(), downloadedRemotePath, intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
-            }
+                if (sameAccount && isDescendant) {
+                    refreshListOfFilesFragment();
+                    refreshSecondFragment(intent.getAction(), downloadedRemotePath, intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
+                }
+
+                if (mWaitingToSend != null) {
+                    mWaitingToSend = getStorageManager().getFileByPath(mWaitingToSend.getRemotePath()); // Update the file to send
+                    if (mWaitingToSend.isDown()) {
+                        sendDownloadedFile();
+                    }
+                }
 
-            if (mWaitingToSend != null) {
-                mWaitingToSend = getStorageManager().getFileByPath(mWaitingToSend.getRemotePath()); // Update the file to send
-                if (mWaitingToSend.isDown()) { 
-                    sendDownloadedFile();
+            } finally {
+                if (intent != null) {
+                    removeStickyBroadcast(intent);
                 }
             }
-            
-            removeStickyBroadcast(intent);
         }
 
         private boolean isDescendant(String downloadedRemotePath) {
@@ -1042,10 +1205,10 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             return (accountName != null && getAccount() != null && accountName.equals(getAccount().name));
         }
     }
-    
-    
+
+
     public void browseToRoot() {
-        OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+        OCFileListFragment listOfFiles = getListOfFilesFragment();
         if (listOfFiles != null) {  // should never be null, indeed
             while (mDirectories.getCount() > 1) {
                 popDirname();
@@ -1053,22 +1216,22 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             OCFile root = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
             listOfFiles.listDirectory(root);
             setFile(listOfFiles.getCurrentFile());
-            startSyncFolderOperation(root);
+            startSyncFolderOperation(root, false);
         }
         cleanSecondFragment();
     }
-    
-    
+
+
     public void browseTo(OCFile folder) {
         if (folder == null || !folder.isFolder()) {
             throw new IllegalArgumentException("Trying to browse to invalid folder " + folder);
         }
-        OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+        OCFileListFragment listOfFiles = getListOfFilesFragment();
         if (listOfFiles != null) {
             setNavigationListWithFolder(folder);
             listOfFiles.listDirectory(folder);
             setFile(listOfFiles.getCurrentFile());
-            startSyncFolderOperation(folder);
+            startSyncFolderOperation(folder, false);
         } else {
             Log_OC.e(TAG, "Unexpected null when accessing list fragment");
         }
@@ -1078,24 +1241,24 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
     /**
      * {@inheritDoc}
-     * 
+     * <p/>
      * Updates action bar and second fragment, if in dual pane mode.
      */
     @Override
     public void onBrowsedDownTo(OCFile directory) {
         pushDirname(directory);
         cleanSecondFragment();
-        
+
         // Sync Folder
-        startSyncFolderOperation(directory);
-        
+        startSyncFolderOperation(directory, false);
+
     }
 
     /**
-     * Shows the information of the {@link OCFile} received as a 
+     * Shows the information of the {@link OCFile} received as a
      * parameter in the second fragment.
-     * 
-     * @param file          {@link OCFile} whose details will be shown
+     *
+     * @param file {@link OCFile} whose details will be shown
      */
     @Override
     public void showDetails(OCFile file) {
@@ -1111,13 +1274,13 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
      * TODO
      */
     private void updateNavigationElementsInActionBar(OCFile chosenFile) {
-        ActionBar actionBar = getSupportActionBar(); 
+        ActionBar actionBar = getSupportActionBar();
         if (chosenFile == null || mDualPane) {
             // only list of files - set for browsing through folders
             OCFile currentDir = getCurrentDir();
             boolean noRoot = (currentDir != null && currentDir.getParentId() != 0);
             actionBar.setDisplayHomeAsUpEnabled(noRoot);
-            actionBar.setDisplayShowTitleEnabled(!noRoot); 
+            actionBar.setDisplayShowTitleEnabled(!noRoot);
             if (!noRoot) {
                 actionBar.setTitle(getString(R.string.default_display_name_for_root_folder));
             }
@@ -1138,7 +1301,9 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         return new ListServiceConnection();
     }
 
-    /** Defines callbacks for service binding, passed to bindService() */
+    /**
+     * Defines callbacks for service binding, passed to bindService()
+     */
     private class ListServiceConnection implements ServiceConnection {
 
         @Override
@@ -1152,7 +1317,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                         if (!mWaitingToPreview.isDown()) {
                             requestForDownload();
                         }
-                }
+                    }
 
             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                 Log_OC.d(TAG, "Upload service connected");
@@ -1161,13 +1326,13 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                 return;
             }
             // a new chance to get the mDownloadBinder through getFileDownloadBinder() - THIS IS A MESS
-            OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+            OCFileListFragment listOfFiles = getListOfFilesFragment();
             if (listOfFiles != null) {
                 listOfFiles.listDirectory();
             }
             FileFragment secondFragment = getSecondFragment();
             if (secondFragment != null && secondFragment instanceof FileDetailFragment) {
-                FileDetailFragment detailFragment = (FileDetailFragment)secondFragment;
+                FileDetailFragment detailFragment = (FileDetailFragment) secondFragment;
                 detailFragment.listenForTransferProgress();
                 detailFragment.updateFileDetails(false, false);
             }
@@ -1183,8 +1348,9 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                 mUploaderBinder = null;
             }
         }
-    };    
+    }
 
+    ;
 
 
     /**
@@ -1204,7 +1370,7 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
     @Override
     public void onSavedCertificate() {
-        startSyncFolderOperation(getCurrentDir());                
+        startSyncFolderOperation(getCurrentDir(), false);
     }
 
 
@@ -1221,37 +1387,39 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     /**
      * Updates the view associated to the activity after the finish of some operation over files
      * in the current account.
-     * 
-     * @param operation     Removal operation performed.
-     * @param result        Result of the removal.
+     *
+     * @param operation Removal operation performed.
+     * @param result    Result of the removal.
      */
     @Override
     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
         super.onRemoteOperationFinish(operation, result);
-        
+
         if (operation instanceof RemoveFileOperation) {
-            onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
+            onRemoveFileOperationFinish((RemoveFileOperation) operation, result);
 
         } else if (operation instanceof RenameFileOperation) {
-            onRenameFileOperationFinish((RenameFileOperation)operation, result);
+            onRenameFileOperationFinish((RenameFileOperation) operation, result);
 
         } else if (operation instanceof SynchronizeFileOperation) {
-            onSynchronizeFileOperationFinish((SynchronizeFileOperation)operation, result);
+            onSynchronizeFileOperationFinish((SynchronizeFileOperation) operation, result);
 
         } else if (operation instanceof CreateFolderOperation) {
-            onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
-            
+            onCreateFolderOperationFinish((CreateFolderOperation) operation, result);
+
         } else if (operation instanceof CreateShareOperation) {
             onCreateShareOperationFinish((CreateShareOperation) operation, result);
-            
+
         } else if (operation instanceof UnshareLinkOperation) {
-            onUnshareLinkOperationFinish((UnshareLinkOperation)operation, result);
-        
-        } 
-        
+            onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
+
+        } else if (operation instanceof MoveFileOperation) {
+            onMoveFileOperationFinish((MoveFileOperation) operation, result);
+        }
+
     }
 
-    
+
     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
             refreshShowDetails();
@@ -1259,52 +1427,57 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         }
     }
 
-    
+
     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
             refreshShowDetails();
             refreshListOfFilesFragment();
-            
+
         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
             cleanSecondFragment();
             refreshListOfFilesFragment();
         }
     }
-    
+
     private void refreshShowDetails() {
         FileFragment details = getSecondFragment();
         if (details != null) {
             OCFile file = details.getFile();
             if (file != null) {
-                file = getStorageManager().getFileByPath(file.getRemotePath()); 
+                file = getStorageManager().getFileByPath(file.getRemotePath());
                 if (details instanceof PreviewMediaFragment) {
                     // Refresh  OCFile of the fragment
                     ((PreviewMediaFragment) details).updateFile(file);
-                } else {
+                } else if (details instanceof PreviewTextFragment) {
+                    // Refresh  OCFile of the fragment
+                    ((PreviewTextFragment) details).updateFile(file);
+                } else
                     showDetails(file);
-                } 
             }
             invalidateOptionsMenu();
-        } 
+        }
     }
-    
+
     /**
-     * Updates the view associated to the activity after the finish of an operation trying to remove a 
-     * file. 
-     * 
-     * @param operation     Removal operation performed.
-     * @param result        Result of the removal.
+     * Updates the view associated to the activity after the finish of an operation trying to remove a
+     * file.
+     *
+     * @param operation Removal operation performed.
+     * @param result    Result of the removal.
      */
     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
         dismissLoadingDialog();
+
+        Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                Toast.LENGTH_LONG);
+        msg.show();
+
         if (result.isSuccess()) {
-            Toast msg = Toast.makeText(this, R.string.remove_success_msg, Toast.LENGTH_LONG);
-            msg.show();
             OCFile removedFile = operation.getFile();
             FileFragment second = getSecondFragment();
             if (second != null && removedFile.equals(second.getFile())) {
                 if (second instanceof PreviewMediaFragment) {
-                    ((PreviewMediaFragment)second).stopPreview(true);
+                    ((PreviewMediaFragment) second).stopPreview(true);
                 }
                 setFile(getStorageManager().getFileById(removedFile.getParentId()));
                 cleanSecondFragment();
@@ -1314,67 +1487,72 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             }
             invalidateOptionsMenu();
         } else {
-            Toast msg = Toast.makeText(this, R.string.remove_fail_msg, Toast.LENGTH_LONG); 
-            msg.show();
             if (result.isSslRecoverableException()) {
                 mLastSslUntrustedServerResult = result;
                 showUntrustedCertDialog(mLastSslUntrustedServerResult);
             }
         }
     }
-    
-    
+
+
     /**
-     * Updates the view associated to the activity after the finish of an operation trying create a new folder
-     * 
-     * @param operation     Creation operation performed.
-     * @param result        Result of the creation.
+     * Updates the view associated to the activity after the finish of an operation trying to move a
+     * file.
+     *
+     * @param operation Move operation performed.
+     * @param result    Result of the move operation.
      */
-    private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
+    private void onMoveFileOperationFinish(MoveFileOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
             dismissLoadingDialog();
             refreshListOfFilesFragment();
         } else {
             dismissLoadingDialog();
-            if (result.getCode() == ResultCode.INVALID_CHARACTER_IN_NAME) {
-                Toast.makeText(FileDisplayActivity.this, R.string.filename_forbidden_characters, Toast.LENGTH_LONG).show();
-            } else {
             try {
-                Toast msg = Toast.makeText(FileDisplayActivity.this, R.string.create_dir_fail_msg, Toast.LENGTH_LONG); 
+                Toast msg = Toast.makeText(FileDisplayActivity.this,
+                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                        Toast.LENGTH_LONG);
                 msg.show();
 
             } catch (NotFoundException e) {
-                Log_OC.e(TAG, "Error while trying to show fail message " , e);
-            }
+                Log_OC.e(TAG, "Error while trying to show fail message ", e);
             }
         }
     }
 
 
     /**
-     * Updates the view associated to the activity after the finish of an operation trying to rename a 
-     * file. 
-     * 
-     * @param operation     Renaming operation performed.
-     * @param result        Result of the renaming.
+     * Updates the view associated to the activity after the finish of an operation trying to rename a
+     * file.
+     *
+     * @param operation Renaming operation performed.
+     * @param result    Result of the renaming.
      */
     private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
         dismissLoadingDialog();
         OCFile renamedFile = operation.getFile();
         if (result.isSuccess()) {
             FileFragment details = getSecondFragment();
-            if (details != null) 
-                if (details instanceof FileDetailFragment && renamedFile.equals(details.getFile()) ) {
+            if (details != null) {
+                if (details instanceof FileDetailFragment && renamedFile.equals(details.getFile())) {
                     ((FileDetailFragment) details).updateFileDetails(renamedFile, getAccount());
                     showDetails(renamedFile);
-                    
-            } else if (details instanceof PreviewMediaFragment && renamedFile.equals(details.getFile())) {
-                ((PreviewMediaFragment) details).updateFile(renamedFile);
-                if (PreviewMediaFragment.canBePreviewed(renamedFile)) {
-                    int position = ((PreviewMediaFragment)details).getPosition();
-                    startMediaPreview(renamedFile, position, true);
-                } else {
-                    getFileOperationsHelper().openFile(renamedFile);
+
+                } else if (details instanceof PreviewMediaFragment && renamedFile.equals(details.getFile())) {
+                    ((PreviewMediaFragment) details).updateFile(renamedFile);
+                    if (PreviewMediaFragment.canBePreviewed(renamedFile)) {
+                        int position = ((PreviewMediaFragment) details).getPosition();
+                        startMediaPreview(renamedFile, position, true);
+                    } else {
+                        getFileOperationsHelper().openFile(renamedFile);
+                    }
+                } else if (details instanceof PreviewTextFragment && renamedFile.equals(details.getFile())) {
+                    ((PreviewTextFragment) details).updateFile(renamedFile);
+                    if (PreviewTextFragment.canBePreviewed(renamedFile)) {
+                        startTextPreview(renamedFile);
+                    } else {
+                        getFileOperationsHelper().openFile(renamedFile);
+                    }
                 }
             }
 
@@ -1383,20 +1561,13 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             }
 
         } else {
-            if (result.getCode().equals(ResultCode.INVALID_LOCAL_FILE_NAME)) {
-                Toast msg = Toast.makeText(this, R.string.rename_local_fail_msg, Toast.LENGTH_LONG); 
-                msg.show();
-                // TODO throw again the new rename dialog
-            } if (result.getCode().equals(ResultCode.INVALID_CHARACTER_IN_NAME)) {
-                Toast msg = Toast.makeText(this, R.string.filename_forbidden_characters, Toast.LENGTH_LONG); 
-                msg.show();
-            } else {
-                Toast msg = Toast.makeText(this, R.string.rename_server_fail_msg, Toast.LENGTH_LONG); 
-                msg.show();
-                if (result.isSslRecoverableException()) {
-                    mLastSslUntrustedServerResult = result;
-                    showUntrustedCertDialog(mLastSslUntrustedServerResult);
-                }
+            Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                    Toast.LENGTH_LONG);
+            msg.show();
+
+            if (result.isSslRecoverableException()) {
+                mLastSslUntrustedServerResult = result;
+                showUntrustedCertDialog(mLastSslUntrustedServerResult);
             }
         }
     }
@@ -1411,33 +1582,64 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, getAccount());
                 startActivity(i);
 
-            } 
-            
+            }
+
         } else {
             if (operation.transferWasRequested()) {
                 onTransferStateChanged(syncedFile, true, true);
-                
+
             } else {
-                Toast msg = Toast.makeText(this, R.string.sync_file_nothing_to_do_msg, Toast.LENGTH_LONG); 
+                Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                        Toast.LENGTH_LONG);
                 msg.show();
             }
         }
     }
 
-    
+    /**
+     * Updates the view associated to the activity after the finish of an operation trying create a new folder
+     *
+     * @param operation Creation operation performed.
+     * @param result    Result of the creation.
+     */
+    private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
+        if (result.isSuccess()) {
+            dismissLoadingDialog();
+            refreshListOfFilesFragment();
+        } else {
+            dismissLoadingDialog();
+            try {
+                Toast msg = Toast.makeText(FileDisplayActivity.this,
+                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                        Toast.LENGTH_LONG);
+                msg.show();
+
+            } catch (NotFoundException e) {
+                Log_OC.e(TAG, "Error while trying to show fail message ", e);
+            }
+        }
+    }
+
+
     /**
      * {@inheritDoc}
      */
     @Override
     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
+        refreshListOfFilesFragment();
         FileFragment details = getSecondFragment();
-        if (details != null && details instanceof FileDetailFragment && file.equals(details.getFile()) ) {
+        if (details != null && details instanceof FileDetailFragment && file.equals(details.getFile())) {
             if (downloading || uploading) {
-                ((FileDetailFragment)details).updateFileDetails(file, getAccount());
+                ((FileDetailFragment) details).updateFileDetails(file, getAccount());
             } else {
-                ((FileDetailFragment)details).updateFileDetails(false, true);
+                if (!file.fileExists()) {
+                    cleanSecondFragment();
+                } else {
+                    ((FileDetailFragment) details).updateFileDetails(false, true);
+                }
             }
         }
+
     }
 
 
@@ -1464,37 +1666,40 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
         }
         return null;
     }
-    
-    public void startSyncFolderOperation(OCFile folder) {
-        long currentSyncTime = System.currentTimeMillis(); 
-        
+
+    public void startSyncFolderOperation(OCFile folder, boolean ignoreETag) {
+        long currentSyncTime = System.currentTimeMillis();
+
         mSyncInProgress = true;
-                
+
         // perform folder synchronization
-        RemoteOperation synchFolderOp = new SynchronizeFolderOperation( folder,  
-                                                                        currentSyncTime, 
-                                                                        false,
-                                                                        getFileOperationsHelper().isSharedSupported(),
-                                                                        getStorageManager(), 
-                                                                        getAccount(), 
-                                                                        getApplicationContext()
-                                                                      );
-        synchFolderOp.execute(getAccount(), this, null, null, this);
-        
+        RemoteOperation synchFolderOp = new SynchronizeFolderOperation(folder,
+                currentSyncTime,
+                false,
+                getFileOperationsHelper().isSharedSupported(),
+                ignoreETag,
+                getStorageManager(),
+                getAccount(),
+                getApplicationContext()
+        );
+        synchFolderOp.execute(getAccount(), this, null, null);
+
         setSupportProgressBarIndeterminateVisibility(true);
+
+        setBackgroundText();
     }
 
     /**
-     * Show untrusted cert dialog 
+     * Show untrusted cert dialog
      */
     public void showUntrustedCertDialog(RemoteOperationResult result) {
         // Show a dialog with the certificate info
-        SslUntrustedCertDialog dialog = SslUntrustedCertDialog.newInstanceForFullSslError((CertificateCombinedException)result.getException());
+        SslUntrustedCertDialog dialog = SslUntrustedCertDialog.newInstanceForFullSslError((CertificateCombinedException) result.getException());
         FragmentManager fm = getSupportFragmentManager();
         FragmentTransaction ft = fm.beginTransaction();
         dialog.show(ft, DIALOG_UNTRUSTED_CERT);
     }
-    
+
     private void requestForDownload(OCFile file) {
         Account account = getAccount();
         if (!mDownloaderBinder.isDownloading(account, file)) {
@@ -1504,31 +1709,31 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
             startService(i);
         }
     }
-    
-    private void sendDownloadedFile(){
+
+    private void sendDownloadedFile() {
         getFileOperationsHelper().sendDownloadedFile(mWaitingToSend);
         mWaitingToSend = null;
     }
 
-    
+
     /**
      * Requests the download of the received {@link OCFile} , updates the UI
      * to monitor the download progress and prepares the activity to send the file
      * when the download finishes.
-     * 
-     * @param file          {@link OCFile} to download and preview.
+     *
+     * @param file {@link OCFile} to download and preview.
      */
     public void startDownloadForSending(OCFile file) {
         mWaitingToSend = file;
         requestForDownload(mWaitingToSend);
-        boolean hasSecondFragment = (getSecondFragment()!= null);
+        boolean hasSecondFragment = (getSecondFragment() != null);
         updateFragmentsVisibility(hasSecondFragment);
     }
-    
+
     /**
      * Opens the image gallery showing the image {@link OCFile} received as parameter.
-     * 
-     * @param file                      Image {@link OCFile} to show.
+     *
+     * @param file Image {@link OCFile} to show.
      */
     public void startImagePreview(OCFile file) {
         Intent showDetailsIntent = new Intent(this, PreviewImageActivity.class);
@@ -1539,10 +1744,10 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
     /**
      * Stars the preview of an already down media {@link OCFile}.
-     * 
-     * @param file                      Media {@link OCFile} to preview.
-     * @param startPlaybackPosition     Media position where the playback will be started, in milliseconds.
-     * @param autoplay                  When 'true', the playback will start without user interactions.
+     *
+     * @param file                  Media {@link OCFile} to preview.
+     * @param startPlaybackPosition Media position where the playback will be started, in milliseconds.
+     * @param autoplay              When 'true', the playback will start without user interactions.
      */
     public void startMediaPreview(OCFile file, int startPlaybackPosition, boolean autoplay) {
         Fragment mediaFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
@@ -1553,11 +1758,27 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
     }
 
     /**
+     * Stars the preview of a text file {@link OCFile}.
+     *
+     * @param file Text {@link OCFile} to preview.
+     */
+    public void startTextPreview(OCFile file) {
+        Bundle args = new Bundle();
+        args.putParcelable(EXTRA_FILE, file);
+        args.putParcelable(EXTRA_ACCOUNT, getAccount());
+        Fragment textPreviewFragment = Fragment.instantiate(getApplicationContext(), PreviewTextFragment.class.getName(), args);
+        setSecondFragment(textPreviewFragment);
+        updateFragmentsVisibility(true);
+        updateNavigationElementsInActionBar(file);
+        setFile(file);
+    }
+
+    /**
      * Requests the download of the received {@link OCFile} , updates the UI
      * to monitor the download progress and prepares the activity to preview
      * or open the file when the download finishes.
-     * 
-     * @param file          {@link OCFile} to download and preview.
+     *
+     * @param file {@link OCFile} to download and preview.
      */
     public void startDownloadForPreview(OCFile file) {
         Fragment detailFragment = new FileDetailFragment(file, getAccount());
@@ -1571,22 +1792,49 @@ FileFragment.ContainerActivity, OnNavigationListener, OnSslUntrustedCertListener
 
 
     public void cancelTransference(OCFile file) {
-        Account account = getAccount();
-        if (mDownloaderBinder != null && mDownloaderBinder.isDownloading(account, file)) {
-            mDownloaderBinder.cancel(account, file);
-            refreshListOfFilesFragment();
-            onTransferStateChanged(file, false, false);
+        getFileOperationsHelper().cancelTransference(file);
+        if (mWaitingToPreview != null &&
+                mWaitingToPreview.getRemotePath().equals(file.getRemotePath())) {
+            mWaitingToPreview = null;
+        }
+        if (mWaitingToSend != null &&
+                mWaitingToSend.getRemotePath().equals(file.getRemotePath())) {
+            mWaitingToSend = null;
+        }
+        onTransferStateChanged(file, false, false);
+    }
 
-        } else if (mUploaderBinder != null && mUploaderBinder.isUploading(account, file)) {
-            mUploaderBinder.cancel(account, file);
-            refreshListOfFilesFragment();
-            if (!file.fileExists()) {
-                cleanSecondFragment();
-                
-            } else {
-                onTransferStateChanged(file, false, false);
+    @Override
+    public void onRefresh(boolean ignoreETag) {
+        refreshList(ignoreETag);
+    }
+
+    @Override
+    public void onRefresh() {
+        refreshList(true);
+    }
+
+    private void refreshList(boolean ignoreETag) {
+        OCFileListFragment listOfFiles = getListOfFilesFragment();
+        if (listOfFiles != null) {
+            OCFile folder = listOfFiles.getCurrentFile();
+            if (folder != null) {
+                /*mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
+                listDirectory(mFile);*/
+                startSyncFolderOperation(folder, ignoreETag);
             }
         }
     }
-    
+
+    private void sortByDate(boolean ascending) {
+        getListOfFilesFragment().sortByDate(ascending);
+    }
+
+    private void sortBySize(boolean ascending) {
+        getListOfFilesFragment().sortBySize(ascending);
+    }
+
+    private void sortByName(boolean ascending) {
+        getListOfFilesFragment().sortByName(ascending);
+    }
 }