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OC-1508: App crashes when changing the orientation
[pub/Android/ownCloud.git] / src / com / owncloud / android / ui / activity / FileDisplayActivity.java
diff --git a/src/com/owncloud/android/ui/activity/FileDisplayActivity.java b/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
index d5f944f..5eba7dc 100644 (file)
--- a/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
+++ b/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
@@ -22,8 +22,8 @@ import java.io.File;
 
 import android.accounts.Account;
 import android.app.AlertDialog;
 
 import android.accounts.Account;
 import android.app.AlertDialog;
-import android.app.ProgressDialog;
 import android.app.Dialog;
 import android.app.Dialog;
+import android.app.ProgressDialog;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.ContentResolver;
@@ -42,6 +42,7 @@ import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.provider.MediaStore;
 import android.support.v4.app.Fragment;
 import android.preference.PreferenceManager;
 import android.provider.MediaStore;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
 import android.util.Log;
 import android.view.View;
 import android.support.v4.app.FragmentTransaction;
 import android.util.Log;
 import android.view.View;
@@ -71,14 +72,16 @@ import com.owncloud.android.operations.CreateFolderOperation;
 import com.owncloud.android.operations.OnRemoteOperationListener;
 import com.owncloud.android.operations.RemoteOperation;
 import com.owncloud.android.operations.RemoteOperationResult;
 import com.owncloud.android.operations.OnRemoteOperationListener;
 import com.owncloud.android.operations.RemoteOperation;
 import com.owncloud.android.operations.RemoteOperationResult;
+import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
 import com.owncloud.android.operations.RemoveFileOperation;
 import com.owncloud.android.operations.RenameFileOperation;
 import com.owncloud.android.operations.SynchronizeFileOperation;
 import com.owncloud.android.operations.RemoveFileOperation;
 import com.owncloud.android.operations.RenameFileOperation;
 import com.owncloud.android.operations.SynchronizeFileOperation;
-import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
+import com.owncloud.android.operations.SynchronizeFolderOperation;
 import com.owncloud.android.syncadapter.FileSyncService;
 import com.owncloud.android.ui.dialog.EditNameDialog;
 import com.owncloud.android.syncadapter.FileSyncService;
 import com.owncloud.android.ui.dialog.EditNameDialog;
-import com.owncloud.android.ui.dialog.SslValidatorDialog;
 import com.owncloud.android.ui.dialog.EditNameDialog.EditNameDialogListener;
 import com.owncloud.android.ui.dialog.EditNameDialog.EditNameDialogListener;
+import com.owncloud.android.ui.dialog.LoadingDialog;
+import com.owncloud.android.ui.dialog.SslValidatorDialog;
 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
 import com.owncloud.android.ui.fragment.FileDetailFragment;
 import com.owncloud.android.ui.fragment.FileFragment;
 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
 import com.owncloud.android.ui.fragment.FileDetailFragment;
 import com.owncloud.android.ui.fragment.FileFragment;
@@ -95,13 +98,13 @@ import com.owncloud.android.ui.preview.PreviewVideoActivity;
  */
 
 public class FileDisplayActivity extends FileActivity implements
  */
 
 public class FileDisplayActivity extends FileActivity implements
-    OCFileListFragment.ContainerActivity, FileDetailFragment.ContainerActivity, OnNavigationListener, OnSslValidatorListener, OnRemoteOperationListener, EditNameDialogListener {
-    
+OCFileListFragment.ContainerActivity, FileDetailFragment.ContainerActivity, OnNavigationListener, OnSslValidatorListener, OnRemoteOperationListener, EditNameDialogListener {
+
     private ArrayAdapter<String> mDirectories;
 
     /** Access point to the cached database for the current ownCloud {@link Account} */
     private DataStorageManager mStorageManager = null;
     private ArrayAdapter<String> mDirectories;
 
     /** Access point to the cached database for the current ownCloud {@link Account} */
     private DataStorageManager mStorageManager = null;
-    
+
     private SyncBroadcastReceiver mSyncBroadcastReceiver;
     private UploadFinishReceiver mUploadFinishReceiver;
     private DownloadFinishReceiver mDownloadFinishReceiver;
     private SyncBroadcastReceiver mSyncBroadcastReceiver;
     private UploadFinishReceiver mUploadFinishReceiver;
     private DownloadFinishReceiver mDownloadFinishReceiver;
@@ -109,23 +112,26 @@ public class FileDisplayActivity extends FileActivity implements
     private FileUploaderBinder mUploaderBinder = null;
     private ServiceConnection mDownloadConnection = null, mUploadConnection = null;
     private RemoteOperationResult mLastSslUntrustedServerResult = null;
     private FileUploaderBinder mUploaderBinder = null;
     private ServiceConnection mDownloadConnection = null, mUploadConnection = null;
     private RemoteOperationResult mLastSslUntrustedServerResult = null;
-    
+
     private boolean mDualPane;
     private View mLeftFragmentContainer;
     private View mRightFragmentContainer;
     private boolean mDualPane;
     private View mLeftFragmentContainer;
     private View mRightFragmentContainer;
-    
+
     private static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
     private static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
-    
+    private static final String KEY_SYNC_IN_PROGRESS = "SYNC_IN_PROGRESS";
+
     public static final int DIALOG_SHORT_WAIT = 0;
     private static final int DIALOG_CHOOSE_UPLOAD_SOURCE = 1;
     private static final int DIALOG_SSL_VALIDATOR = 2;
     private static final int DIALOG_CERT_NOT_SAVED = 3;
     
     public static final int DIALOG_SHORT_WAIT = 0;
     private static final int DIALOG_CHOOSE_UPLOAD_SOURCE = 1;
     private static final int DIALOG_SSL_VALIDATOR = 2;
     private static final int DIALOG_CERT_NOT_SAVED = 3;
     
+    private static final String DIALOG_WAIT_TAG = "DIALOG_WAIT";
+
     public static final String ACTION_DETAILS = "com.owncloud.android.ui.activity.action.DETAILS";
     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;
     private static final int ACTION_SELECT_CONTENT_FROM_APPS = 1;
     private static final int ACTION_SELECT_MULTIPLE_FILES = 2;
-    
+
     private static final String TAG = FileDisplayActivity.class.getSimpleName();
 
     private static final String TAG_LIST_OF_FILES = "LIST_OF_FILES";
     private static final String TAG = FileDisplayActivity.class.getSimpleName();
 
     private static final String TAG_LIST_OF_FILES = "LIST_OF_FILES";
@@ -133,14 +139,16 @@ public class FileDisplayActivity extends FileActivity implements
 
     private OCFile mWaitingToPreview;
     private Handler mHandler;
 
     private OCFile mWaitingToPreview;
     private Handler mHandler;
+    
+    private boolean mSyncInProgress = false;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         Log_OC.d(TAG, "onCreate() start");
         requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         Log_OC.d(TAG, "onCreate() start");
         requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
-        
+
         super.onCreate(savedInstanceState); // this calls onAccountChanged() when ownCloud Account is valid
         super.onCreate(savedInstanceState); // this calls onAccountChanged() when ownCloud Account is valid
-        
+
         mHandler = new Handler();
 
         /// bindings to transference services
         mHandler = new Handler();
 
         /// bindings to transference services
@@ -158,17 +166,19 @@ public class FileDisplayActivity extends FileActivity implements
         Intent observer_intent = new Intent(this, FileObserverService.class);
         observer_intent.putExtra(FileObserverService.KEY_FILE_CMD, FileObserverService.CMD_INIT_OBSERVED_LIST);
         startService(observer_intent);
         Intent observer_intent = new Intent(this, FileObserverService.class);
         observer_intent.putExtra(FileObserverService.KEY_FILE_CMD, FileObserverService.CMD_INIT_OBSERVED_LIST);
         startService(observer_intent);
-            
+
         /// Load of saved instance state
         if(savedInstanceState != null) {
             mWaitingToPreview = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW);
         /// Load of saved instance state
         if(savedInstanceState != null) {
             mWaitingToPreview = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW);
-
+            mSyncInProgress = savedInstanceState.getBoolean(KEY_SYNC_IN_PROGRESS);
+           
         } else {
             mWaitingToPreview = null;
         } else {
             mWaitingToPreview = null;
-        }
-        
+            mSyncInProgress = false;
+        }        
+
         /// USER INTERFACE
         /// USER INTERFACE
-            
+
         // Inflate and set the layout view
         setContentView(R.layout.files);    
         mDualPane = getResources().getBoolean(R.bool.large_land_layout);
         // Inflate and set the layout view
         setContentView(R.layout.files);    
         mDualPane = getResources().getBoolean(R.bool.large_land_layout);
@@ -176,29 +186,17 @@ public class FileDisplayActivity extends FileActivity implements
         mRightFragmentContainer = findViewById(R.id.right_fragment_container);
         if (savedInstanceState == null) {
             createMinFragments();
         mRightFragmentContainer = findViewById(R.id.right_fragment_container);
         if (savedInstanceState == null) {
             createMinFragments();
-            if (!isRedirectingToSetupAccount()) {
-                initFragmentsWithFile();
-            }
         }
         }
-        
+
         // Action bar setup
         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
         // Action bar setup
         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
-        OCFile currFile = getFile();
-        if (mStorageManager != null) {
-            while(currFile != null && currFile.getFileName() != OCFile.PATH_SEPARATOR) {
-                mDirectories.add(currFile.getFileName());
-                currFile = mStorageManager.getFileById(currFile.getParentId());
-            }
-        }
-        mDirectories.add(OCFile.PATH_SEPARATOR);
-        ActionBar actionBar = getSupportActionBar();
-        actionBar.setHomeButtonEnabled(true);   // mandatory since Android ICS, according to the official documentation
-        setSupportProgressBarIndeterminateVisibility(false);        // always AFTER setContentView(...) ; to workaround bug in its implementation
+        getSupportActionBar().setHomeButtonEnabled(true);       // mandatory since Android ICS, according to the official documentation
+        setSupportProgressBarIndeterminateVisibility(mSyncInProgress);    // always AFTER setContentView(...) ; to work around bug in its implementation        
         
         Log_OC.d(TAG, "onCreate() end");
     }
 
         
         Log_OC.d(TAG, "onCreate() end");
     }
 
-    
+
     @Override
     protected void onDestroy() {
         super.onDestroy();
     @Override
     protected void onDestroy() {
         super.onDestroy();
@@ -207,8 +205,8 @@ public class FileDisplayActivity extends FileActivity implements
         if (mUploadConnection != null)
             unbindService(mUploadConnection);
     }
         if (mUploadConnection != null)
             unbindService(mUploadConnection);
     }
-    
-    
+
+
     /**
      *  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.
      */ 
@@ -216,31 +214,49 @@ public class FileDisplayActivity extends FileActivity implements
     protected void onAccountSet(boolean stateWasRecovered) {
         if (getAccount() != null) {
             mStorageManager = new FileDataStorageManager(getAccount(), getContentResolver());
     protected void onAccountSet(boolean stateWasRecovered) {
         if (getAccount() != null) {
             mStorageManager = new FileDataStorageManager(getAccount(), getContentResolver());
-            
+
             /// Check whether the 'main' OCFile handled by the Activity is contained in the current Account
             OCFile file = getFile();
             if (file != null) {
             /// Check whether the 'main' OCFile handled by the Activity is contained in the current Account
             OCFile file = getFile();
             if (file != null) {
-                file = mStorageManager.getFileByPath(file.getRemotePath());   // currentDir = null if not in the current Account
+                if (file.isDown() && file.getLastSyncDateForProperties() == 0) {
+                    // upload in progress - right now, files are not inserted in the local cache until the upload is successful
+                    if (mStorageManager.getFileById(file.getParentId()) == null) {
+                        file = null;    // not able to know the directory where the file is uploading
+                    }
+                } else {
+                    file = mStorageManager.getFileByPath(file.getRemotePath());   // currentDir = null if not in the current Account
+                }
             }
             if (file == null) {
                 // fall back to root folder
             }
             if (file == null) {
                 // fall back to root folder
-                file = mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR);  // never should return null
+                file = mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR);  // never returns null
             }
             setFile(file);
             }
             setFile(file);
-            
-            if (findViewById(android.R.id.content) != null && !stateWasRecovered) {
+            mDirectories.clear();
+            OCFile fileIt = file;
+            while(fileIt != null && fileIt.getFileName() != OCFile.PATH_SEPARATOR) {
+                if (fileIt.isDirectory()) {
+                    mDirectories.add(fileIt.getFileName());
+                }
+                fileIt = mStorageManager.getFileById(fileIt.getParentId());
+            }
+            mDirectories.add(OCFile.PATH_SEPARATOR);
+            if (!stateWasRecovered) {
                 Log_OC.e(TAG, "Initializing Fragments in onAccountChanged..");
                 initFragmentsWithFile();
                 Log_OC.e(TAG, "Initializing Fragments in onAccountChanged..");
                 initFragmentsWithFile();
+                
             } else {
             } else {
-                Log_OC.e(TAG, "Fragment initializacion ignored in onAccountChanged due to lack of CONTENT VIEW");
+                updateFragmentsVisibility(!file.isDirectory());
+                updateNavigationElementsInActionBar(file.isDirectory() ? null : file);
             }
             
             }
             
+            
         } else {
             Log_OC.wtf(TAG, "onAccountChanged was called with NULL account associated!");
         }
     }
         } else {
             Log_OC.wtf(TAG, "onAccountChanged was called with NULL account associated!");
         }
     }
-    
-    
+
+
     private void createMinFragments() {
         OCFileListFragment listOfFiles = new OCFileListFragment();
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
     private void createMinFragments() {
         OCFileListFragment listOfFiles = new OCFileListFragment();
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
@@ -250,13 +266,26 @@ public class FileDisplayActivity extends FileActivity implements
 
     private void initFragmentsWithFile() {
         if (getAccount() != null && getFile() != null) {
 
     private void initFragmentsWithFile() {
         if (getAccount() != null && getFile() != null) {
+            /// First fragment
+            OCFileListFragment listOfFiles = getListOfFilesFragment(); 
+            if (listOfFiles != null) {
+                listOfFiles.listDirectory(getCurrentDir());   
+            } else {
+                Log.e(TAG, "Still have a chance to lose the initializacion of list fragment >(");
+            }
+            
             /// Second fragment
             OCFile file = getFile(); 
             Fragment secondFragment = chooseInitialSecondFragment(file);
             if (secondFragment != null) {
                 setSecondFragment(secondFragment);
             /// Second fragment
             OCFile file = getFile(); 
             Fragment secondFragment = chooseInitialSecondFragment(file);
             if (secondFragment != null) {
                 setSecondFragment(secondFragment);
+                updateFragmentsVisibility(true);
+                updateNavigationElementsInActionBar(file);
+                
+            } else {
+                cleanSecondFragment();
             }
             }
-            
+
         } else {
             Log.wtf(TAG, "initFragments() called with invalid NULLs!");
             if (getAccount() == null) {
         } else {
             Log.wtf(TAG, "initFragments() called with invalid NULLs!");
             if (getAccount() == null) {
@@ -271,11 +300,13 @@ public class FileDisplayActivity extends FileActivity implements
     private Fragment chooseInitialSecondFragment(OCFile file) {
         Fragment secondFragment = null;
         if (file != null && !file.isDirectory()) {
     private Fragment chooseInitialSecondFragment(OCFile file) {
         Fragment secondFragment = null;
         if (file != null && !file.isDirectory()) {
-            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);
                 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 {
                 secondFragment = new FileDetailFragment(file, getAccount());
             }
@@ -283,7 +314,7 @@ public class FileDisplayActivity extends FileActivity implements
         return secondFragment;
     }
 
         return secondFragment;
     }
 
-    
+
     /**
      * Replaces the second fragment managed by the activity with the received as
      * a parameter.
     /**
      * Replaces the second fragment managed by the activity with the received as
      * a parameter.
@@ -294,11 +325,11 @@ public class FileDisplayActivity extends FileActivity implements
      */
     private void setSecondFragment(Fragment fragment) {
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
      */
     private void setSecondFragment(Fragment fragment) {
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
-        transaction.add(R.id.right_fragment_container, fragment, TAG_SECOND_FRAGMENT);
+        transaction.replace(R.id.right_fragment_container, fragment, TAG_SECOND_FRAGMENT);
         transaction.commit();
     }
         transaction.commit();
     }
-    
-    
+
+
     private void updateFragmentsVisibility(boolean existsSecondFragment) {
         if (mDualPane) {
             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
     private void updateFragmentsVisibility(boolean existsSecondFragment) {
         if (mDualPane) {
             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
@@ -307,7 +338,7 @@ public class FileDisplayActivity extends FileActivity implements
             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                 mRightFragmentContainer.setVisibility(View.VISIBLE);
             }
             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                 mRightFragmentContainer.setVisibility(View.VISIBLE);
             }
-            
+
         } else if (existsSecondFragment) {
             if (mLeftFragmentContainer.getVisibility() != View.GONE) {
                 mLeftFragmentContainer.setVisibility(View.GONE);
         } else if (existsSecondFragment) {
             if (mLeftFragmentContainer.getVisibility() != View.GONE) {
                 mLeftFragmentContainer.setVisibility(View.GONE);
@@ -315,7 +346,7 @@ public class FileDisplayActivity extends FileActivity implements
             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                 mRightFragmentContainer.setVisibility(View.VISIBLE);
             }
             if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                 mRightFragmentContainer.setVisibility(View.VISIBLE);
             }
-            
+
         } else {
             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
                 mLeftFragmentContainer.setVisibility(View.VISIBLE);
         } else {
             if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
                 mLeftFragmentContainer.setVisibility(View.VISIBLE);
@@ -326,7 +357,7 @@ public class FileDisplayActivity extends FileActivity implements
         }
     }
 
         }
     }
 
-    
+
     private OCFileListFragment getListOfFilesFragment() {
         Fragment listOfFiles = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_LIST_OF_FILES);
         if (listOfFiles != null) {
     private OCFileListFragment getListOfFilesFragment() {
         Fragment listOfFiles = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_LIST_OF_FILES);
         if (listOfFiles != null) {
@@ -335,7 +366,7 @@ public class FileDisplayActivity extends FileActivity implements
         Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!");
         return null;
     }
         Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!");
         return null;
     }
-    
+
     protected FileFragment getSecondFragment() {
         Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
         if (second != null) {
     protected FileFragment getSecondFragment() {
         Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
         if (second != null) {
@@ -350,10 +381,11 @@ public class FileDisplayActivity extends FileActivity implements
             FragmentTransaction tr = getSupportFragmentManager().beginTransaction();
             tr.remove(second);
             tr.commit();
             FragmentTransaction tr = getSupportFragmentManager().beginTransaction();
             tr.remove(second);
             tr.commit();
-            updateFragmentsVisibility(false);
         }
         }
+        updateFragmentsVisibility(false);
+        updateNavigationElementsInActionBar(null);
     }
     }
-    
+
     protected void refeshListOfFilesFragment() {
         OCFileListFragment fileListFragment = getListOfFilesFragment();
         if (fileListFragment != null) { 
     protected void refeshListOfFilesFragment() {
         OCFileListFragment fileListFragment = getListOfFilesFragment();
         if (fileListFragment != null) { 
@@ -370,26 +402,28 @@ public class FileDisplayActivity extends FileActivity implements
             if (fileInFragment != null && !downloadedRemotePath.equals(fileInFragment.getRemotePath())) {
                 // the user browsed to other file ; forget the automatic preview 
                 mWaitingToPreview = null;
             if (fileInFragment != null && !downloadedRemotePath.equals(fileInFragment.getRemotePath())) {
                 // the user browsed to other file ; forget the automatic preview 
                 mWaitingToPreview = null;
-                
+
             } else if (downloadEvent.equals(FileDownloader.DOWNLOAD_ADDED_MESSAGE)) {
                 // grant that the right panel updates the progress bar
                 detailsFragment.listenForTransferProgress();
                 detailsFragment.updateFileDetails(true, false);
             } else if (downloadEvent.equals(FileDownloader.DOWNLOAD_ADDED_MESSAGE)) {
                 // grant that the right panel updates the progress bar
                 detailsFragment.listenForTransferProgress();
                 detailsFragment.updateFileDetails(true, false);
-                
+
             } else if (downloadEvent.equals(FileDownloader.DOWNLOAD_FINISH_MESSAGE)) {
             } else if (downloadEvent.equals(FileDownloader.DOWNLOAD_FINISH_MESSAGE)) {
-                //  update the right panel 
-                if (success && waitedPreview) {
-                    mWaitingToPreview = mStorageManager.getFileById(mWaitingToPreview.getFileId());   // update the file from database, for the local storage path
-                    if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
-                        startMediaPreview(mWaitingToPreview, 0, true);
-                       
-                    } else {
-                        detailsFragment.updateFileDetails(false, (success));
-                        openFile(mWaitingToPreview);
+                //  update the right panel
+                boolean detailsFragmentChanged = false;
+                if (waitedPreview) {
+                    if (success) {
+                        mWaitingToPreview = mStorageManager.getFileById(mWaitingToPreview.getFileId());   // update the file from database, for the local storage path
+                        if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
+                            startMediaPreview(mWaitingToPreview, 0, true);
+                            detailsFragmentChanged = true;
+                        } else {
+                            openFile(mWaitingToPreview);
+                        }
                     }
                     mWaitingToPreview = null;
                     }
                     mWaitingToPreview = null;
-                    
-                } else {
+                }
+                if (!detailsFragmentChanged) {
                     detailsFragment.updateFileDetails(false, (success));
                 }
             }
                     detailsFragment.updateFileDetails(false, (success));
                 }
             }
@@ -408,34 +442,36 @@ public class FileDisplayActivity extends FileActivity implements
     public boolean onOptionsItemSelected(MenuItem item) {
         boolean retval = true;
         switch (item.getItemId()) {
     public boolean onOptionsItemSelected(MenuItem item) {
         boolean retval = true;
         switch (item.getItemId()) {
-            case R.id.action_create_dir: {
-                EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.uploader_info_dirname), "", -1, -1, this);
-                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();
-                if((getFile() != null && getFile().getParentId() != 0) || 
-                        (second != null && second.getFile() != null)) {
-                    onBackPressed(); 
-                }
-                break;
+        case R.id.action_create_dir: {
+            EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.uploader_info_dirname), "", -1, -1, this);
+            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(); 
+                
             }
             }
-            default:
-                retval = super.onOptionsItemSelected(item);
+            break;
+        }
+        default:
+            retval = super.onOptionsItemSelected(item);
         }
         return retval;
     }
         }
         return retval;
     }
@@ -469,13 +505,13 @@ public class FileDisplayActivity extends FileActivity implements
      */
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
      */
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
-        
+
         if (requestCode == ACTION_SELECT_CONTENT_FROM_APPS && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
             requestSimpleUpload(data, resultCode);
         if (requestCode == ACTION_SELECT_CONTENT_FROM_APPS && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
             requestSimpleUpload(data, resultCode);
-            
+
         } else if (requestCode == ACTION_SELECT_MULTIPLE_FILES && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
             requestMultipleUpload(data, resultCode);
         } else if (requestCode == ACTION_SELECT_MULTIPLE_FILES && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
             requestMultipleUpload(data, resultCode);
-            
+
         }
     }
 
         }
     }
 
@@ -501,7 +537,7 @@ public class FileDisplayActivity extends FileActivity implements
             if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
                 i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
             startService(i);
             if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
                 i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
             startService(i);
-            
+
         } else {
             Log_OC.d(TAG, "User clicked on 'Update' with no selection");
             Toast t = Toast.makeText(this, getString(R.string.filedisplay_no_file_selected), Toast.LENGTH_LONG);
         } else {
             Log_OC.d(TAG, "User clicked on 'Update' with no selection");
             Toast t = Toast.makeText(this, getString(R.string.filedisplay_no_file_selected), Toast.LENGTH_LONG);
@@ -523,11 +559,11 @@ public class FileDisplayActivity extends FileActivity implements
                 filepath = selectedImagePath;
             else
                 filepath = filemanagerstring;
                 filepath = selectedImagePath;
             else
                 filepath = filemanagerstring;
-            
+
         } catch (Exception e) {
             Log_OC.e(TAG, "Unexpected exception when trying to read the result of Intent.ACTION_GET_CONTENT", e);
             e.printStackTrace();
         } catch (Exception e) {
             Log_OC.e(TAG, "Unexpected exception when trying to read the result of Intent.ACTION_GET_CONTENT", e);
             e.printStackTrace();
-            
+
         } finally {
             if (filepath == null) {
                 Log_OC.e(TAG, "Couldnt resolve path to file");
         } finally {
             if (filepath == null) {
                 Log_OC.e(TAG, "Couldnt resolve path to file");
@@ -558,20 +594,23 @@ public class FileDisplayActivity extends FileActivity implements
 
     @Override
     public void onBackPressed() {
 
     @Override
     public void onBackPressed() {
-        if (mDualPane || getSecondFragment() == null) {
+        if (!mSyncInProgress) {
             OCFileListFragment listOfFiles = getListOfFilesFragment(); 
             OCFileListFragment listOfFiles = getListOfFilesFragment(); 
-            if (listOfFiles != null) {  // should never be null, indeed
-                if (mDirectories.getCount() <= 1) {
-                    finish();
-                    return;
+            if (mDualPane || getSecondFragment() == null) {
+                if (listOfFiles != null) {  // should never be null, indeed
+                    if (mDirectories.getCount() <= 1) {
+                        finish();
+                        return;
+                    }
+                    popDirname();
+                    listOfFiles.onBrowseUp();
                 }
                 }
-                popDirname();
-                listOfFiles.onBrowseUp();
+            }
+            if (listOfFiles != null) {  // should never be null, indeed
                 setFile(listOfFiles.getCurrentFile());
             }
                 setFile(listOfFiles.getCurrentFile());
             }
+            cleanSecondFragment();
         }
         }
-        cleanSecondFragment();
-        updateNavigationElementsInActionBar(getFile(), null);
     }
 
     @Override
     }
 
     @Override
@@ -580,17 +619,13 @@ public class FileDisplayActivity extends FileActivity implements
         Log_OC.e(TAG, "onSaveInstanceState() start");
         super.onSaveInstanceState(outState);
         outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW, mWaitingToPreview);
         Log_OC.e(TAG, "onSaveInstanceState() start");
         super.onSaveInstanceState(outState);
         outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW, mWaitingToPreview);
+        outState.putBoolean(FileDisplayActivity.KEY_SYNC_IN_PROGRESS, mSyncInProgress);
+
         Log_OC.d(TAG, "onSaveInstanceState() end");
     }
     
         Log_OC.d(TAG, "onSaveInstanceState() end");
     }
     
-    @Override
-    protected void onStart() {
-        super.onStart();
-        FileFragment second = getSecondFragment();
-        updateFragmentsVisibility(second != null);
-        updateNavigationElementsInActionBar(getFile(), (second == null) ? null : second.getFile());
-    }
-    
+
+
     @Override
     protected void onResume() {
         super.onResume();
     @Override
     protected void onResume() {
         super.onResume();
@@ -600,28 +635,35 @@ public class FileDisplayActivity extends FileActivity implements
         IntentFilter syncIntentFilter = new IntentFilter(FileSyncService.SYNC_MESSAGE);
         mSyncBroadcastReceiver = new SyncBroadcastReceiver();
         registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
         IntentFilter syncIntentFilter = new IntentFilter(FileSyncService.SYNC_MESSAGE);
         mSyncBroadcastReceiver = new SyncBroadcastReceiver();
         registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
-        
+
         // Listen for upload messages
         IntentFilter uploadIntentFilter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
         mUploadFinishReceiver = new UploadFinishReceiver();
         registerReceiver(mUploadFinishReceiver, uploadIntentFilter);
         // Listen for upload messages
         IntentFilter uploadIntentFilter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
         mUploadFinishReceiver = new UploadFinishReceiver();
         registerReceiver(mUploadFinishReceiver, uploadIntentFilter);
-        
+
         // Listen for download messages
         IntentFilter downloadIntentFilter = new IntentFilter(FileDownloader.DOWNLOAD_ADDED_MESSAGE);
         downloadIntentFilter.addAction(FileDownloader.DOWNLOAD_FINISH_MESSAGE);
         mDownloadFinishReceiver = new DownloadFinishReceiver();
         registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);
     
         // Listen for download messages
         IntentFilter downloadIntentFilter = new IntentFilter(FileDownloader.DOWNLOAD_ADDED_MESSAGE);
         downloadIntentFilter.addAction(FileDownloader.DOWNLOAD_FINISH_MESSAGE);
         mDownloadFinishReceiver = new DownloadFinishReceiver();
         registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);
     
-        // List current directory
-        OCFileListFragment listOfFiles = getListOfFilesFragment(); 
-        if (listOfFiles != null) {
-            listOfFiles.listDirectory(getFile());   // TODO we should find the way to avoid the need of this (maybe it's not necessary yet; to check)
-        }
-    
         Log_OC.d(TAG, "onResume() end");
     }
 
         Log_OC.d(TAG, "onResume() end");
     }
 
-    
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        Log_OC.e(TAG, "onStart() start");
+        
+        // Update the sync operation
+        if (mSyncInProgress){
+        }
+        
+        Log_OC.e(TAG, "onStart() end");
+    }
+
+
     @Override
     protected void onPause() {
         super.onPause();
     @Override
     protected void onPause() {
         super.onPause();
@@ -638,11 +680,11 @@ public class FileDisplayActivity extends FileActivity implements
             unregisterReceiver(mDownloadFinishReceiver);
             mDownloadFinishReceiver = null;
         }
             unregisterReceiver(mDownloadFinishReceiver);
             mDownloadFinishReceiver = null;
         }
-        
+
         Log_OC.d(TAG, "onPause() end");
     }
 
         Log_OC.d(TAG, "onPause() end");
     }
 
-    
+
     @Override
     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
         if (id == DIALOG_SSL_VALIDATOR && mLastSslUntrustedServerResult != null) {
     @Override
     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
         if (id == DIALOG_SSL_VALIDATOR && mLastSslUntrustedServerResult != null) {
@@ -650,7 +692,7 @@ public class FileDisplayActivity extends FileActivity implements
         }
     }
 
         }
     }
 
-    
+
     @Override
     protected Dialog onCreateDialog(int id) {
         Dialog dialog = null;
     @Override
     protected Dialog onCreateDialog(int id) {
         Dialog dialog = null;
@@ -666,34 +708,34 @@ public class FileDisplayActivity extends FileActivity implements
             break;
         }
         case DIALOG_CHOOSE_UPLOAD_SOURCE: {
             break;
         }
         case DIALOG_CHOOSE_UPLOAD_SOURCE: {
-            
+
             String[] items = null;
             String[] items = null;
-            
+
             String[] allTheItems = { getString(R.string.actionbar_upload_files),
             String[] allTheItems = { getString(R.string.actionbar_upload_files),
-                                     getString(R.string.actionbar_upload_from_apps),
-                                     getString(R.string.actionbar_failed_instant_upload) };
-            
+                    getString(R.string.actionbar_upload_from_apps),
+                    getString(R.string.actionbar_failed_instant_upload) };
+
             String[] commonItems = { getString(R.string.actionbar_upload_files),
             String[] commonItems = { getString(R.string.actionbar_upload_files),
-                                     getString(R.string.actionbar_upload_from_apps) };
-            
+                    getString(R.string.actionbar_upload_from_apps) };
+
             if (InstantUploadActivity.IS_ENABLED)
                 items = allTheItems;
             else 
                 items = commonItems;
             if (InstantUploadActivity.IS_ENABLED)
                 items = allTheItems;
             else 
                 items = commonItems;
-            
+
             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(items, 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);
-                        // } else {
-                        // TODO create and handle new fragment
-                        // LocalFileListFragment
-                        // }
+                            Intent action = new Intent(FileDisplayActivity.this, UploadFilesActivity.class);
+                            action.putExtra(UploadFilesActivity.EXTRA_ACCOUNT, FileDisplayActivity.this.getAccount());
+                            startActivityForResult(action, ACTION_SELECT_MULTIPLE_FILES);
+                            // } else {
+                            // 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);
                     } else if (item == 1) {
                         Intent action = new Intent(Intent.ACTION_GET_CONTENT);
                         action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
@@ -718,21 +760,45 @@ public class FileDisplayActivity extends FileActivity implements
             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
             builder.setCancelable(false);
             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
             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();
-                    };
-                });
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    dialog.dismiss();
+                };
+            });
             dialog = builder.create();
             break;
         }
         default:
             dialog = null;
         }
             dialog = builder.create();
             break;
         }
         default:
             dialog = null;
         }
-    
+
         return dialog;
     }
 
         return dialog;
     }
 
+
+    /**
+     * Show loading dialog 
+     */
+    public void showLoadingDialog() {
+        // Construct dialog
+        LoadingDialog loading = new LoadingDialog(getResources().getString(R.string.wait_a_moment));
+        FragmentManager fm = getSupportFragmentManager();
+        FragmentTransaction ft = fm.beginTransaction();
+        loading.show(ft, DIALOG_WAIT_TAG);
+        
+    }
+    
+    /**
+     * Dismiss loading dialog
+     */
+    public void dismissLoadingDialog(){
+        Fragment frag = getSupportFragmentManager().findFragmentByTag(DIALOG_WAIT_TAG);
+      if (frag != null) {
+          LoadingDialog loading = (LoadingDialog) frag;
+            loading.dismiss();
+        }
+    }
+    
     
     /**
      * Translates a content URI of an image to a physical path
     
     /**
      * Translates a content URI of an image to a physical path
@@ -751,7 +817,7 @@ public class FileDisplayActivity extends FileActivity implements
         } 
         return null;
     }
         } 
         return null;
     }
-    
+
     /**
      * Pushes a directory to the drop down list
      * @param directory to push
     /**
      * Pushes a directory to the drop down list
      * @param directory to push
@@ -776,29 +842,29 @@ public class FileDisplayActivity extends FileActivity implements
 
     // Custom array adapter to override text colors
     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
 
     // Custom array adapter to override text colors
     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
-    
+
         public CustomArrayAdapter(FileDisplayActivity ctx, int view) {
             super(ctx, view);
         }
         public CustomArrayAdapter(FileDisplayActivity ctx, int view) {
             super(ctx, view);
         }
-    
+
         public View getView(int position, View convertView, ViewGroup parent) {
             View v = super.getView(position, convertView, parent);
         public View getView(int position, View convertView, ViewGroup parent) {
             View v = super.getView(position, convertView, parent);
-    
+
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
             return v;
         }
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
             return v;
         }
-    
+
         public View getDropDownView(int position, View convertView,
                 ViewGroup parent) {
             View v = super.getDropDownView(position, convertView, parent);
         public View getDropDownView(int position, View convertView,
                 ViewGroup parent) {
             View v = super.getDropDownView(position, convertView, parent);
-    
+
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
             ((TextView) v).setTextColor(getResources().getColorStateList(
                     android.R.color.white));
-    
+
             return v;
         }
             return v;
         }
-    
+
     }
 
     private class SyncBroadcastReceiver extends BroadcastReceiver {
     }
 
     private class SyncBroadcastReceiver extends BroadcastReceiver {
@@ -812,16 +878,18 @@ public class FileDisplayActivity extends FileActivity implements
             String accountName = intent.getStringExtra(FileSyncService.ACCOUNT_NAME);
 
             Log_OC.d(TAG, "sync of account " + accountName + " is in_progress: " + inProgress);
             String accountName = intent.getStringExtra(FileSyncService.ACCOUNT_NAME);
 
             Log_OC.d(TAG, "sync of account " + accountName + " is in_progress: " + inProgress);
-
-            if (getAccount() != null && accountName.equals(getAccount().name)) {  
             
             
+            RemoteOperationResult synchResult = (RemoteOperationResult)intent.getSerializableExtra(FileSyncService.SYNC_RESULT);
+            
+            if (getAccount() != null && accountName.equals(getAccount().name)) {  
+
                 String synchFolderRemotePath = intent.getStringExtra(FileSyncService.SYNC_FOLDER_REMOTE_PATH); 
                 String synchFolderRemotePath = intent.getStringExtra(FileSyncService.SYNC_FOLDER_REMOTE_PATH); 
-                 
+
                 boolean fillBlankRoot = false;
                 boolean fillBlankRoot = false;
-                OCFile currentDir = getFile();
+                OCFile currentDir = getCurrentDir();
                 if (currentDir == null) {
                     currentDir = mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR);
                 if (currentDir == null) {
                     currentDir = mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR);
-                    fillBlankRoot = (currentDir != null);
+                    fillBlankRoot = (currentDir != null);                   
                 }
 
                 if ((synchFolderRemotePath != null && currentDir != null && (currentDir.getRemotePath().equals(synchFolderRemotePath)))
                 }
 
                 if ((synchFolderRemotePath != null && currentDir != null && (currentDir.getRemotePath().equals(synchFolderRemotePath)))
@@ -831,16 +899,20 @@ public class FileDisplayActivity extends FileActivity implements
                     OCFileListFragment fileListFragment = getListOfFilesFragment();
                     if (fileListFragment != null) {
                         fileListFragment.listDirectory(currentDir);
                     OCFileListFragment fileListFragment = getListOfFilesFragment();
                     if (fileListFragment != null) {
                         fileListFragment.listDirectory(currentDir);
+                        
                     }
                     }
+                    if (getSecondFragment() == null)
+                        setFile(currentDir);
                 }
                 }
-                setFile(currentDir);
                 
                 setSupportProgressBarIndeterminateVisibility(inProgress);
                 removeStickyBroadcast(intent);
                 
                 
                 setSupportProgressBarIndeterminateVisibility(inProgress);
                 removeStickyBroadcast(intent);
                 
+                mSyncInProgress = inProgress;
+
             }
             }
+
             
             
-            RemoteOperationResult synchResult = (RemoteOperationResult)intent.getSerializableExtra(FileSyncService.SYNC_RESULT);
             if (synchResult != null) {
                 if (synchResult.getCode().equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
                     mLastSslUntrustedServerResult = synchResult;
             if (synchResult != null) {
                 if (synchResult.getCode().equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
                     mLastSslUntrustedServerResult = synchResult;
@@ -862,15 +934,16 @@ public class FileDisplayActivity extends FileActivity implements
             String uploadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
             String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
             boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
             String uploadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
             String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
             boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
-            boolean isDescendant = (getFile() != null) && (uploadedRemotePath != null) && (uploadedRemotePath.startsWith(getFile().getRemotePath()));
+            OCFile currentDir = getCurrentDir();
+            boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null) && (uploadedRemotePath.startsWith(currentDir.getRemotePath()));
             if (sameAccount && isDescendant) {
                 refeshListOfFilesFragment();
             }
         }
             if (sameAccount && isDescendant) {
                 refeshListOfFilesFragment();
             }
         }
-        
+
     }
     }
-    
-    
+
+
     /**
      * Class waiting for broadcast events from the {@link FielDownloader} service.
      * 
     /**
      * Class waiting for broadcast events from the {@link FielDownloader} service.
      * 
@@ -883,17 +956,18 @@ public class FileDisplayActivity extends FileActivity implements
             boolean sameAccount = isSameAccount(context, intent);
             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
             boolean isDescendant = isDescendant(downloadedRemotePath);
             boolean sameAccount = isSameAccount(context, intent);
             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
             boolean isDescendant = isDescendant(downloadedRemotePath);
-            
+
             if (sameAccount && isDescendant) {
                 refeshListOfFilesFragment();
                 refreshSecondFragment(intent.getAction(), downloadedRemotePath, intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
             }
             if (sameAccount && isDescendant) {
                 refeshListOfFilesFragment();
                 refreshSecondFragment(intent.getAction(), downloadedRemotePath, intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
             }
-            
+
             removeStickyBroadcast(intent);
         }
 
         private boolean isDescendant(String downloadedRemotePath) {
             removeStickyBroadcast(intent);
         }
 
         private boolean isDescendant(String downloadedRemotePath) {
-            return (getFile() != null && downloadedRemotePath != null && downloadedRemotePath.startsWith(getFile().getRemotePath()));
+            OCFile currentDir = getCurrentDir();
+            return (currentDir != null && downloadedRemotePath != null && downloadedRemotePath.startsWith(currentDir.getRemotePath()));
         }
 
         private boolean isSameAccount(Context context, Intent intent) {
         }
 
         private boolean isSameAccount(Context context, Intent intent) {
@@ -901,8 +975,8 @@ public class FileDisplayActivity extends FileActivity implements
             return (accountName != null && getAccount() != null && accountName.equals(getAccount().name));
         }
     }
             return (accountName != null && getAccount() != null && accountName.equals(getAccount().name));
         }
     }
-    
-    
+
+
     /**
      * {@inheritDoc}
      */
     /**
      * {@inheritDoc}
      */
@@ -910,7 +984,7 @@ public class FileDisplayActivity extends FileActivity implements
     public DataStorageManager getStorageManager() {
         return mStorageManager;
     }
     public DataStorageManager getStorageManager() {
         return mStorageManager;
     }
-    
+
 
     /**
      * {@inheritDoc}
 
     /**
      * {@inheritDoc}
@@ -921,9 +995,12 @@ public class FileDisplayActivity extends FileActivity implements
     public void onBrowsedDownTo(OCFile directory) {
         pushDirname(directory);
         cleanSecondFragment();
     public void onBrowsedDownTo(OCFile directory) {
         pushDirname(directory);
         cleanSecondFragment();
-        updateNavigationElementsInActionBar(directory, null);
+        
+        // Sync Folder
+        startSyncFolderOperation(directory.getRemotePath(), directory.getFileId());
+        
     }
     }
-    
+
     /**
      * Opens the image gallery showing the image {@link OCFile} received as parameter.
      * 
     /**
      * Opens the image gallery showing the image {@link OCFile} received as parameter.
      * 
@@ -936,7 +1013,7 @@ public class FileDisplayActivity extends FileActivity implements
         showDetailsIntent.putExtra(EXTRA_ACCOUNT, getAccount());
         startActivity(showDetailsIntent);
     }
         showDetailsIntent.putExtra(EXTRA_ACCOUNT, getAccount());
         startActivity(showDetailsIntent);
     }
-    
+
     /**
      * Stars the preview of an already down media {@link OCFile}.
      * 
     /**
      * Stars the preview of an already down media {@link OCFile}.
      * 
@@ -949,9 +1026,10 @@ public class FileDisplayActivity extends FileActivity implements
         Fragment mediaFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
         setSecondFragment(mediaFragment);
         updateFragmentsVisibility(true);
         Fragment mediaFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
         setSecondFragment(mediaFragment);
         updateFragmentsVisibility(true);
-        updateNavigationElementsInActionBar(getFile(), file);
+        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
     /**
      * Requests the download of the received {@link OCFile} , updates the UI
      * to monitor the download progress and prepares the activity to preview
@@ -966,10 +1044,11 @@ public class FileDisplayActivity extends FileActivity implements
         mWaitingToPreview = file;
         requestForDownload();
         updateFragmentsVisibility(true);
         mWaitingToPreview = file;
         requestForDownload();
         updateFragmentsVisibility(true);
-        updateNavigationElementsInActionBar(getFile(), file);
+        updateNavigationElementsInActionBar(file);
+        setFile(file);
     }
 
     }
 
-    
+
     /**
      * Shows the information of the {@link OCFile} received as a 
      * parameter in the second fragment.
     /**
      * Shows the information of the {@link OCFile} received as a 
      * parameter in the second fragment.
@@ -981,49 +1060,56 @@ public class FileDisplayActivity extends FileActivity implements
         Fragment detailFragment = new FileDetailFragment(file, getAccount());
         setSecondFragment(detailFragment);
         updateFragmentsVisibility(true);
         Fragment detailFragment = new FileDetailFragment(file, getAccount());
         setSecondFragment(detailFragment);
         updateFragmentsVisibility(true);
-        updateNavigationElementsInActionBar(getFile(), file);
+        updateNavigationElementsInActionBar(file);
+        setFile(file);
     }
     }
-    
-    
+
+
     /**
      * TODO
      */
     /**
      * TODO
      */
-    private void updateNavigationElementsInActionBar(OCFile currentDir, OCFile currentFile) {
+    private void updateNavigationElementsInActionBar(OCFile chosenFile) {
         ActionBar actionBar = getSupportActionBar(); 
         ActionBar actionBar = getSupportActionBar(); 
-        if (currentFile == null || mDualPane) {
+        if (chosenFile == null || mDualPane) {
             // only list of files - set for browsing through folders
             // only list of files - set for browsing through folders
-            actionBar.setDisplayHomeAsUpEnabled(currentDir != null && currentDir.getParentId() != 0);
+            OCFile currentDir = getCurrentDir();
+            actionBar.setDisplayHomeAsUpEnabled(currentDir != null && currentDir.getParentId() != 0 && !mSyncInProgress);
             actionBar.setDisplayShowTitleEnabled(false);
             actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
             actionBar.setListNavigationCallbacks(mDirectories, this);   // assuming mDirectories is updated
             actionBar.setDisplayShowTitleEnabled(false);
             actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
             actionBar.setListNavigationCallbacks(mDirectories, this);   // assuming mDirectories is updated
-            
+
         } else {
             actionBar.setDisplayHomeAsUpEnabled(true);
             actionBar.setDisplayShowTitleEnabled(true);
         } else {
             actionBar.setDisplayHomeAsUpEnabled(true);
             actionBar.setDisplayShowTitleEnabled(true);
-            actionBar.setTitle(currentFile.getFileName());
+            actionBar.setTitle(chosenFile.getFileName());
             actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
         }
     }
             actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
         }
     }
-    
-    
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public OCFile getInitialDirectory() {
-        return getFile();
-    }
-    
-    
+
+
+//    private void updateDisplayHomeAtSync(){
+//        ActionBar actionBar = getSupportActionBar();
+//        OCFile currentDir = getCurrentDir();
+//        if (currentDir.getParentId() != DataStorageManager.ROOT_PARENT_ID) {
+//            actionBar.setHomeButtonEnabled(!mSyncInProgress);
+//            actionBar.setDisplayHomeAsUpEnabled(!mSyncInProgress);
+//        }
+//        else {
+//            actionBar.setHomeButtonEnabled(true);
+//            actionBar.setDisplayHomeAsUpEnabled(false);
+//        }
+//    }
+//    
     /**
      * {@inheritDoc}
      */
     @Override
     public void onFileStateChanged() {
         refeshListOfFilesFragment();
     /**
      * {@inheritDoc}
      */
     @Override
     public void onFileStateChanged() {
         refeshListOfFilesFragment();
+        updateNavigationElementsInActionBar(getSecondFragment().getFile());
     }
 
     }
 
-    
+
     /**
      * {@inheritDoc}
      */
     /**
      * {@inheritDoc}
      */
@@ -1032,7 +1118,7 @@ public class FileDisplayActivity extends FileActivity implements
         return mDownloaderBinder;
     }
 
         return mDownloaderBinder;
     }
 
-    
+
     /**
      * {@inheritDoc}
      */
     /**
      * {@inheritDoc}
      */
@@ -1040,8 +1126,8 @@ public class FileDisplayActivity extends FileActivity implements
     public FileUploaderBinder getFileUploaderBinder() {
         return mUploaderBinder;
     }
     public FileUploaderBinder getFileUploaderBinder() {
         return mUploaderBinder;
     }
-    
-    
+
+
     /** Defines callbacks for service binding, passed to bindService() */
     private class ListServiceConnection implements ServiceConnection {
 
     /** Defines callbacks for service binding, passed to bindService() */
     private class ListServiceConnection implements ServiceConnection {
 
@@ -1053,7 +1139,7 @@ public class FileDisplayActivity extends FileActivity implements
                 if (mWaitingToPreview != null) {
                     requestForDownload();
                 }
                 if (mWaitingToPreview != null) {
                     requestForDownload();
                 }
-                
+
             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                 Log_OC.d(TAG, "Upload service connected");
                 mUploaderBinder = (FileUploaderBinder) service;
             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                 Log_OC.d(TAG, "Upload service connected");
                 mUploaderBinder = (FileUploaderBinder) service;
@@ -1085,8 +1171,8 @@ public class FileDisplayActivity extends FileActivity implements
         }
     };    
 
         }
     };    
 
-    
-    
+
+
     /**
      * Launch an intent to request the PIN code to the user before letting him use the app
      */
     /**
      * Launch an intent to request the PIN code to the user before letting him use the app
      */
@@ -1125,16 +1211,17 @@ public class FileDisplayActivity extends FileActivity implements
     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
         if (operation instanceof RemoveFileOperation) {
             onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
         if (operation instanceof RemoveFileOperation) {
             onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
-                
+
         } else if (operation instanceof RenameFileOperation) {
             onRenameFileOperationFinish((RenameFileOperation)operation, result);
         } else if (operation instanceof RenameFileOperation) {
             onRenameFileOperationFinish((RenameFileOperation)operation, result);
-            
+
         } else if (operation instanceof SynchronizeFileOperation) {
             onSynchronizeFileOperationFinish((SynchronizeFileOperation)operation, result);
 
         } else if (operation instanceof CreateFolderOperation) {
             onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
         } else if (operation instanceof SynchronizeFileOperation) {
             onSynchronizeFileOperationFinish((SynchronizeFileOperation)operation, result);
 
         } else if (operation instanceof CreateFolderOperation) {
             onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
-        }
+            
+        } 
     }
 
 
     }
 
 
@@ -1146,7 +1233,7 @@ public class FileDisplayActivity extends FileActivity implements
      * @param result        Result of the removal.
      */
     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
      * @param result        Result of the removal.
      */
     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
-        dismissDialog(DIALOG_SHORT_WAIT);
+        dismissLoadingDialog();
         if (result.isSuccess()) {
             Toast msg = Toast.makeText(this, R.string.remove_success_msg, Toast.LENGTH_LONG);
             msg.show();
         if (result.isSuccess()) {
             Toast msg = Toast.makeText(this, R.string.remove_success_msg, Toast.LENGTH_LONG);
             msg.show();
@@ -1156,10 +1243,10 @@ public class FileDisplayActivity extends FileActivity implements
             if (second != null && removedFile.equals(second.getFile())) {
                 cleanSecondFragment();
             }
             if (second != null && removedFile.equals(second.getFile())) {
                 cleanSecondFragment();
             }
-            if (mStorageManager.getFileById(removedFile.getParentId()).equals(getFile())) {
+            if (mStorageManager.getFileById(removedFile.getParentId()).equals(getCurrentDir())) {
                 refeshListOfFilesFragment();
             }
                 refeshListOfFilesFragment();
             }
-                
+
         } else {
             Toast msg = Toast.makeText(this, R.string.remove_fail_msg, Toast.LENGTH_LONG); 
             msg.show();
         } else {
             Toast msg = Toast.makeText(this, R.string.remove_fail_msg, Toast.LENGTH_LONG); 
             msg.show();
@@ -1178,22 +1265,22 @@ public class FileDisplayActivity extends FileActivity implements
      */
     private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
      */
     private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
-            dismissDialog(DIALOG_SHORT_WAIT);
+            dismissLoadingDialog();
             refeshListOfFilesFragment();
             refeshListOfFilesFragment();
-            
+
         } else {
         } else {
-            dismissDialog(DIALOG_SHORT_WAIT);
+            dismissLoadingDialog();
             try {
                 Toast msg = Toast.makeText(FileDisplayActivity.this, R.string.create_dir_fail_msg, Toast.LENGTH_LONG); 
                 msg.show();
             try {
                 Toast msg = Toast.makeText(FileDisplayActivity.this, R.string.create_dir_fail_msg, Toast.LENGTH_LONG); 
                 msg.show();
-                    
+
             } catch (NotFoundException e) {
                 Log_OC.e(TAG, "Error while trying to show fail message " , e);
             }
         }
     }
             } catch (NotFoundException 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. 
     /**
      * Updates the view associated to the activity after the finish of an operation trying to rename a 
      * file. 
@@ -1202,7 +1289,7 @@ public class FileDisplayActivity extends FileActivity implements
      * @param result        Result of the renaming.
      */
     private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
      * @param result        Result of the renaming.
      */
     private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
-        dismissDialog(DIALOG_SHORT_WAIT);
+        dismissLoadingDialog();
         OCFile renamedFile = operation.getFile();
         if (result.isSuccess()) {
             if (mDualPane) {
         OCFile renamedFile = operation.getFile();
         if (result.isSuccess()) {
             if (mDualPane) {
@@ -1211,10 +1298,10 @@ public class FileDisplayActivity extends FileActivity implements
                     ((FileDetailFragment) details).updateFileDetails(renamedFile, getAccount());
                 }
             }
                     ((FileDetailFragment) details).updateFileDetails(renamedFile, getAccount());
                 }
             }
-            if (mStorageManager.getFileById(renamedFile.getParentId()).equals(getFile())) {
+            if (mStorageManager.getFileById(renamedFile.getParentId()).equals(getCurrentDir())) {
                 refeshListOfFilesFragment();
             }
                 refeshListOfFilesFragment();
             }
-            
+
         } else {
             if (result.getCode().equals(ResultCode.INVALID_LOCAL_FILE_NAME)) {
                 Toast msg = Toast.makeText(this, R.string.rename_local_fail_msg, Toast.LENGTH_LONG); 
         } else {
             if (result.getCode().equals(ResultCode.INVALID_LOCAL_FILE_NAME)) {
                 Toast msg = Toast.makeText(this, R.string.rename_local_fail_msg, Toast.LENGTH_LONG); 
@@ -1233,7 +1320,7 @@ public class FileDisplayActivity extends FileActivity implements
 
 
     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation, RemoteOperationResult result) {
 
 
     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation, RemoteOperationResult result) {
-        dismissDialog(DIALOG_SHORT_WAIT);
+        dismissLoadingDialog();
         OCFile syncedFile = operation.getLocalFile();
         if (!result.isSuccess()) {
             if (result.getCode() == ResultCode.SYNC_CONFLICT) {
         OCFile syncedFile = operation.getLocalFile();
         if (!result.isSuccess()) {
             if (result.getCode() == ResultCode.SYNC_CONFLICT) {
@@ -1241,17 +1328,14 @@ public class FileDisplayActivity extends FileActivity implements
                 i.putExtra(ConflictsResolveActivity.EXTRA_FILE, syncedFile);
                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, getAccount());
                 startActivity(i);
                 i.putExtra(ConflictsResolveActivity.EXTRA_FILE, syncedFile);
                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, getAccount());
                 startActivity(i);
-                
-            } else {
-                Toast msg = Toast.makeText(this, R.string.sync_file_fail_msg, Toast.LENGTH_LONG); 
-                msg.show();
-            }
-            
+
+            } 
+
         } else {
             if (operation.transferWasRequested()) {
                 refeshListOfFilesFragment();
                 onTransferStateChanged(syncedFile, true, true);
         } else {
             if (operation.transferWasRequested()) {
                 refeshListOfFilesFragment();
                 onTransferStateChanged(syncedFile, true, true);
-                
+
             } else {
                 Toast msg = Toast.makeText(this, R.string.sync_file_nothing_to_do_msg, Toast.LENGTH_LONG); 
                 msg.show();
             } else {
                 Toast msg = Toast.makeText(this, R.string.sync_file_nothing_to_do_msg, Toast.LENGTH_LONG); 
                 msg.show();
@@ -1283,32 +1367,23 @@ public class FileDisplayActivity extends FileActivity implements
             String newDirectoryName = dialog.getNewFilename().trim();
             Log_OC.d(TAG, "'create directory' dialog dismissed with new name " + newDirectoryName);
             if (newDirectoryName.length() > 0) {
             String newDirectoryName = dialog.getNewFilename().trim();
             Log_OC.d(TAG, "'create directory' dialog dismissed with new name " + newDirectoryName);
             if (newDirectoryName.length() > 0) {
-                String path;
-                if (getFile() == null) {
-                    // this is just a patch; we should ensure that mCurrentDir never is null
-                    if (!mStorageManager.fileExists(OCFile.PATH_SEPARATOR)) {
-                        OCFile file = new OCFile(OCFile.PATH_SEPARATOR);
-                        mStorageManager.saveFile(file);
-                    }
-                    setFile(mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR));
-                }
-                path = FileDisplayActivity.this.getFile().getRemotePath();
-                
+                String path = getCurrentDir().getRemotePath();
+
                 // Create directory
                 path += newDirectoryName + OCFile.PATH_SEPARATOR;
                 // Create directory
                 path += newDirectoryName + OCFile.PATH_SEPARATOR;
-                RemoteOperation operation = new CreateFolderOperation(path, getFile().getFileId(), mStorageManager);
+                RemoteOperation operation = new CreateFolderOperation(path, getCurrentDir().getFileId(), mStorageManager);
                 operation.execute(  getAccount(), 
                 operation.execute(  getAccount(), 
-                                    FileDisplayActivity.this, 
-                                    FileDisplayActivity.this, 
-                                    mHandler,
-                                    FileDisplayActivity.this);
-                
-                showDialog(DIALOG_SHORT_WAIT);
+                        FileDisplayActivity.this, 
+                        FileDisplayActivity.this, 
+                        mHandler,
+                        FileDisplayActivity.this);
+
+                showLoadingDialog();
             }
         }
     }
             }
         }
     }
-    
-    
+
+
     private void requestForDownload() {
         Account account = getAccount();
         if (!mDownloaderBinder.isDownloading(account, mWaitingToPreview)) {
     private void requestForDownload() {
         Account account = getAccount();
         if (!mDownloaderBinder.isDownloading(account, mWaitingToPreview)) {
@@ -1320,4 +1395,48 @@ public class FileDisplayActivity extends FileActivity implements
     }
 
 
     }
 
 
+    private OCFile getCurrentDir() {
+        OCFile file = getFile();
+        if (file != null) {
+            if (file.isDirectory()) {
+                return file;
+            } else if (mStorageManager != null) {
+                return mStorageManager.getFileById(file.getParentId());
+            }
+        }
+        return null;
+    }
+    
+    public void startSyncFolderOperation(String remotePath, long parentId) {
+        long currentSyncTime = System.currentTimeMillis(); 
+        
+        mSyncInProgress = true;
+                
+        // perform folder synchronization
+        RemoteOperation synchFolderOp = new SynchronizeFolderOperation(  remotePath, 
+                                                                                    currentSyncTime, 
+                                                                                    parentId, 
+                                                                                    false,
+                                                                                    false,
+                                                                                    getStorageManager(), 
+                                                                                    getAccount(), 
+                                                                                    getApplicationContext()
+                                                                                  );
+        synchFolderOp.execute(getAccount(), this, null, null, this);
+        
+        setSupportProgressBarIndeterminateVisibility(true);
+    }
+
+    
+//    public void enableDisableViewGroup(ViewGroup viewGroup, boolean enabled) {
+//        int childCount = viewGroup.getChildCount();
+//        for (int i = 0; i < childCount; i++) {
+//          View view = viewGroup.getChildAt(i);
+//          view.setEnabled(enabled);
+//          view.setClickable(!enabled);
+//          if (view instanceof ViewGroup) {
+//            enableDisableViewGroup((ViewGroup) view, enabled);
+//          }
+//        }
+//      }
 }
 }
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