From 7cc88a22d183a5bc82ddbd30945789d58e0a753b Mon Sep 17 00:00:00 2001
From: Jorge Antonio Diaz-Benito Soriano <jorge.diazbenitosoriano@gmail.com>
Date: Fri, 17 Oct 2014 16:29:38 +0200
Subject: [PATCH] Added text file preview

---
 res/layout/file_preview.xml                   |  66 +-
 res/layout/text_file_preview.xml              |  29 +
 .../owncloud/android/datamodel/OCFile.java    |  11 +-
 .../ui/activity/FileDisplayActivity.java      | 751 +++++++++---------
 .../ui/fragment/OCFileListFragment.java       |   6 +-
 .../ui/preview/PreviewTextFragment.java       | 341 ++++++++
 6 files changed, 809 insertions(+), 395 deletions(-)
 create mode 100644 res/layout/text_file_preview.xml
 create mode 100644 src/com/owncloud/android/ui/preview/PreviewTextFragment.java

diff --git a/res/layout/file_preview.xml b/res/layout/file_preview.xml
index 483a3691b1..0da5363461 100644
--- a/res/layout/file_preview.xml
+++ b/res/layout/file_preview.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ownCloud Android client application
 
   Copyright (C) 2012-2013  ownCloud Inc.
@@ -25,40 +24,37 @@
     android:layout_height="match_parent"
     android:background="@color/background_color"
     android:gravity="center"
-    tools:context=".ui.fragment.FilePreviewFragment" >
+    tools:context=".ui.fragment.FilePreviewFragment">
 
-    <FrameLayout 
+    <FrameLayout
         android:id="@+id/visual_area"
-   	    android:layout_width="match_parent"
-   	    android:layout_height="0dp"
-   	    android:layout_alignParentTop="true"
-   	    android:layout_above="@+id/media_controller"
-        >
-    
-	    <ImageView
-	        android:id="@+id/image_preview"
-	        android:layout_width="match_parent"
-	        android:layout_height="match_parent"
-	        android:layout_margin="16dp"
-	        android:layout_gravity="center"
-	        android:contentDescription="@string/preview_image_description"
-	        android:src="@drawable/logo" />
-	    
-	   	<VideoView  
-	   	    android:id="@+id/video_preview"
-			android:layout_width="match_parent"
-			android:layout_height="match_parent"  
-			android:layout_gravity="center" 
-			android:visibility="gone"
-			/>
-	   	
-   	</FrameLayout>
-   	
-   	<com.owncloud.android.media.MediaControlView 
-   	    android:id="@id/media_controller"
-   	    android:layout_width="match_parent"
-   	    android:layout_height="wrap_content"
-   	    android:layout_alignParentBottom="true"
-   	    />
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_alignParentTop="true"
+        android:layout_above="@+id/media_controller">
+
+        <ImageView
+            android:id="@+id/image_preview"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_margin="16dp"
+            android:layout_gravity="center"
+            android:contentDescription="@string/preview_image_description"
+            android:src="@drawable/logo" />
+
+        <VideoView
+            android:id="@+id/video_preview"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_gravity="center"
+            android:visibility="gone" />
+
+    </FrameLayout>
+
+    <com.owncloud.android.media.MediaControlView
+        android:id="@id/media_controller"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true" />
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/res/layout/text_file_preview.xml b/res/layout/text_file_preview.xml
new file mode 100644
index 0000000000..f58ce50a8d
--- /dev/null
+++ b/res/layout/text_file_preview.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_marginStart="8dp"
+    android:layout_marginEnd="8dp">
+
+    <ScrollView
+        android:id="@+id/text_scrollview"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scrollbars="vertical"
+        android:fillViewport="true"
+        android:visibility="gone">
+
+        <TextView
+            android:id="@+id/text_preview"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center" />
+    </ScrollView>
+
+    <ProgressBar
+        android:id="@+id/progress_bar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:visibility="gone" />
+</FrameLayout>
\ No newline at end of file
diff --git a/src/com/owncloud/android/datamodel/OCFile.java b/src/com/owncloud/android/datamodel/OCFile.java
index 853b01c5ce..d568ea3ca7 100644
--- a/src/com/owncloud/android/datamodel/OCFile.java
+++ b/src/com/owncloud/android/datamodel/OCFile.java
@@ -448,7 +448,7 @@ public class OCFile implements Parcelable, Comparable<OCFile> {
 
     @Override
     public int describeContents() {
-        return ((Object) this).hashCode();
+        return super.hashCode();
     }
 
     @Override
@@ -537,6 +537,14 @@ public class OCFile implements Parcelable, Comparable<OCFile> {
                 getMimeTypeFromName().startsWith("image/"));
     }
 
+    /**
+     * @return 'True' if the file is simple text (e.g. not application-dependent, like .doc or .docx)
+     */
+    public boolean isText() {
+        return !isFolder() && !isAudio() && !isVideo() && !isImage() && ((mMimeType != null && mMimeType.startsWith("text/")) ||
+                getMimeTypeFromName().startsWith("text/"));
+    }
+
     public String getMimeTypeFromName() {
         String extension = "";
         int pos = mRemotePath.lastIndexOf('.');
@@ -562,5 +570,4 @@ public class OCFile implements Parcelable, Comparable<OCFile> {
     public void setRemoteId(String remoteId) {
         this.mRemoteId = remoteId;
     }
-
 }
diff --git a/src/com/owncloud/android/ui/activity/FileDisplayActivity.java b/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
index b5d543a4e2..820ed3e698 100644
--- a/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
+++ b/src/com/owncloud/android/ui/activity/FileDisplayActivity.java
@@ -18,9 +18,6 @@
 
 package com.owncloud.android.ui.activity;
 
-import java.io.File;
-import java.io.IOException;
-
 import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.accounts.AuthenticatorException;
@@ -98,22 +95,26 @@ 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.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, OnEnforceableRefreshListener {
-    
+        FileFragment.ContainerActivity, OnNavigationListener,
+        OnSslUntrustedCertListener, OnEnforceableRefreshListener {
+
     private ArrayAdapter<String> mDirectories;
 
     private SyncBroadcastReceiver mSyncBroadcastReceiver;
@@ -132,7 +133,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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;
@@ -145,13 +146,13 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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
     protected void onCreate(Bundle savedInstanceState) {
         Log_OC.d(TAG, "onCreate() start");
@@ -171,23 +172,23 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             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);
@@ -199,12 +200,12 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         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();
@@ -217,8 +218,8 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     }
 
     /**
-     *  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);
@@ -232,7 +233,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                     // 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
@@ -244,14 +245,14 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             }
             setFile(file);
             setNavigationListWithFolder(file);
-            
+
             if (!stateWasRecovered) {
                 Log_OC.e(TAG, "Initializing Fragments in onAccountChanged..");
                 initFragmentsWithFile();
                 if (file.isFolder()) {
                     startSyncFolderOperation(file, false);
                 }
-                
+
             } else {
                 updateFragmentsVisibility(!file.isFolder());
                 updateNavigationElementsInActionBar(file.isFolder() ? null : file);
@@ -264,7 +265,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         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());
             }
@@ -282,25 +283,25 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         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_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();
             }
@@ -319,7 +320,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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);
@@ -337,10 +338,10 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     /**
      * 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();
@@ -380,7 +381,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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;
@@ -389,7 +390,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     public FileFragment getSecondFragment() {
         Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
         if (second != null) {
-            return (FileFragment)second;
+            return (FileFragment) second;
         }
         return null;
     }
@@ -407,7 +408,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     protected void refreshListOfFilesFragment() {
         OCFileListFragment fileListFragment = getListOfFilesFragment();
-        if (fileListFragment != null) { 
+        if (fileListFragment != null) {
             fileListFragment.listDirectory();
         }
     }
@@ -436,6 +437,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                         if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
                             startMediaPreview(mWaitingToPreview, 0, true);
                             detailsFragmentChanged = true;
+                        } else if (PreviewTextFragment.canBePreviewed(mWaitingToPreview)) {
+                            startTextPreview(mWaitingToPreview);
+                            detailsFragmentChanged = true;
                         } else {
                             getFileOperationsHelper().openFile(mWaitingToPreview);
                         }
@@ -470,76 +474,76 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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 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(); 
-                
+            case R.id.action_create_dir: {
+                CreateFolderDialogFragment dialog =
+                        CreateFolderDialogFragment.newInstance(getCurrentDir());
+                dialog.show(getSupportFragmentManager(), "createdirdialog");
+                break;
             }
-            break;
-        }
-        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;
-                        
+            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();
-                    
+                                }
+
+                                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();
+
                 }
-            });
-            builder.create().show();
-            break;
-        }
-        default:
-            retval = super.onOptionsItemSelected(item);
+                break;
+            }
+            default:
+                retval = super.onOptionsItemSelected(item);
         }
         return retval;
     }
@@ -573,19 +577,19 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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;
@@ -603,19 +607,19 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         } 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)){
+        } else if (requestCode == ACTION_MOVE_FILES && (resultCode == RESULT_OK ||
+                resultCode == MoveActivity.RESULT_OK_AND_MOVE)) {
 
             final Intent fData = data;
-            final int fResultCode = resultCode; 
+            final int fResultCode = resultCode;
             getHandler().postDelayed(
-                new Runnable() {
-                    @Override
-                    public void run() {
-                        requestMoveOperation(fData, fResultCode);
-                    }
-                }, 
-                DELAY_TO_REQUEST_OPERATION_ON_ACTIVITY_RESULTS
+                    new Runnable() {
+                        @Override
+                        public void run() {
+                            requestMoveOperation(fData, fResultCode);
+                        }
+                    },
+                    DELAY_TO_REQUEST_OPERATION_ON_ACTIVITY_RESULTS
             );
         }
     }
@@ -630,7 +634,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             }
             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();
             }
 
@@ -699,9 +703,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     /**
      * Request the operation for moving the file/folder from one path to another
-     * 
-     * @param data              Intent received
-     * @param resultCode        Result code received
+     *
+     * @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);
@@ -711,7 +715,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     @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) {
@@ -719,7 +723,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                     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();
                 }
             }
@@ -743,14 +747,13 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
         Log_OC.d(TAG, "onSaveInstanceState() end");
     }
-    
 
 
     @Override
     protected void onResume() {
         super.onResume();
         Log_OC.e(TAG, "onResume() start");
-        
+
         // refresh list of files
         refreshListOfFilesFragment();
 
@@ -774,7 +777,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         downloadIntentFilter.addAction(FileDownloader.getDownloadFinishMessage());
         mDownloadFinishReceiver = new DownloadFinishReceiver();
         registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);
-        
+
         Log_OC.d(TAG, "onResume() end");
     }
 
@@ -795,8 +798,8 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             unregisterReceiver(mDownloadFinishReceiver);
             mDownloadFinishReceiver = null;
         }
-        
-        
+
+
         Log_OC.d(TAG, "onPause() end");
         super.onPause();
     }
@@ -807,27 +810,27 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         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: {
+            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[] allTheItems = { getString(R.string.actionbar_upload_files),
-                    getString(R.string.actionbar_upload_from_apps) };
+                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(allTheItems, 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);
@@ -835,32 +838,34 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                             // 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 == 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;
@@ -870,28 +875,30 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     /**
      * 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);
@@ -900,6 +907,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     /**
      * Pops a directory name from the drop down list
+     *
      * @return True, unless the stack is empty
      */
     public boolean popDirname() {
@@ -919,19 +927,19 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
             ((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;
         }
 
@@ -954,27 +962,27 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 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
@@ -990,21 +998,21 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                             }
                             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) &&
+                                equals(event) &&
                                 /// TODO refactor and make common
-                                synchResult != null && !synchResult.isSuccess() &&  
-                                (synchResult.getCode() == ResultCode.UNAUTHORIZED   || 
-                                    synchResult.isIdPRedirection()                  ||
-                                    (synchResult.isException() && synchResult.getException() 
-                                            instanceof AuthenticatorException))) {
+                                synchResult != null && !synchResult.isSuccess() &&
+                                (synchResult.getCode() == ResultCode.UNAUTHORIZED ||
+                                        synchResult.isIdPRedirection() ||
+                                        (synchResult.isException() && synchResult.getException()
+                                                instanceof AuthenticatorException))) {
 
                             OwnCloudClient client = null;
                             try {
-                                OwnCloudAccount ocAccount = 
+                                OwnCloudAccount ocAccount =
                                         new OwnCloudAccount(getAccount(), context);
                                 client = (OwnCloudClientManagerFactory.getDefaultSingleton().
                                         removeClientFor(ocAccount));
@@ -1018,14 +1026,14 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                             } 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, 
+                                                getAccount().type,
                                                 cred.getAuthToken()
                                         );
                                     } else {
@@ -1033,9 +1041,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                                     }
                                 }
                             }
-                            
+
                             requestCredentialsUpdate();
-                            
+
                         }
                     }
                     removeStickyBroadcast(intent);
@@ -1043,9 +1051,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                     setSupportProgressBarIndeterminateVisibility(mSyncInProgress /*|| mRefreshSharesInProgress*/);
 
                     setBackgroundText();
-                        
+
                 }
-                
+
                 if (synchResult != null) {
                     if (synchResult.getCode().equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
                         mLastSslUntrustedServerResult = synchResult;
@@ -1058,7 +1066,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             }
         }
     }
-    
+
     /**
      * Show a text message on screen view for notifying user if content is
      * loading or folder is empty
@@ -1083,7 +1091,8 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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
@@ -1093,22 +1102,22 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
                 boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
                 OCFile currentDir = getCurrentDir();
-                boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null) && 
+                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) || 
+                boolean sameFile = getFile().getRemotePath().equals(uploadedRemotePath) ||
                         renamedInUpload;
                 FileFragment details = getSecondFragment();
-                boolean detailFragmentIsShown = (details != null && 
+                boolean detailFragmentIsShown = (details != null &&
                         details instanceof FileDetailFragment);
-                
+
                 if (sameAccount && sameFile && detailFragmentIsShown) {
                     if (uploadWasFine) {
                         setFile(getStorageManager().getFileByPath(uploadedRemotePath));
@@ -1116,39 +1125,44 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                     if (renamedInUpload) {
                         String newName = (new File(uploadedRemotePath)).getName();
                         Toast msg = Toast.makeText(
-                                context, 
+                                context,
                                 String.format(
-                                        getString(R.string.filedetails_renamed_in_upload_msg), 
-                                        newName), 
+                                        getString(R.string.filedetails_renamed_in_upload_msg),
+                                        newName),
                                 Toast.LENGTH_LONG);
                         msg.show();
                     }
                     if (uploadWasFine || getFile().fileExists()) {
-                        ((FileDetailFragment)details).updateFileDetails(false, true);
+                        ((FileDetailFragment) details).updateFileDetails(false, true);
                     } else {
                         cleanSecondFragment();
                     }
-                    
-                    // Force the preview if the file is an image
-                    if (uploadWasFine && PreviewImageFragment.canBePreviewed(getFile())) {
-                        startImagePreview(getFile());
-                    } // TODO what about other kind of previews?
+
+                    // 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?
+                    }
                 }
-                
+
             } finally {
                 if (intent != null) {
                     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.
      */
@@ -1159,19 +1173,19 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 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 (mWaitingToSend != null) {
                     mWaitingToSend = getStorageManager().getFileByPath(mWaitingToSend.getRemotePath()); // Update the file to send
-                    if (mWaitingToSend.isDown()) { 
+                    if (mWaitingToSend.isDown()) {
                         sendDownloadedFile();
                     }
                 }
-            
+
             } finally {
                 if (intent != null) {
                     removeStickyBroadcast(intent);
@@ -1189,10 +1203,10 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             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();
@@ -1204,13 +1218,13 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         }
         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);
@@ -1225,24 +1239,24 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     /**
      * {@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, 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) {
@@ -1258,13 +1272,13 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
      * 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));
             }
@@ -1285,7 +1299,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         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
@@ -1299,7 +1315,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                         if (!mWaitingToPreview.isDown()) {
                             requestForDownload();
                         }
-                }
+                    }
 
             } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                 Log_OC.d(TAG, "Upload service connected");
@@ -1308,13 +1324,13 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 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);
             }
@@ -1330,8 +1346,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 mUploaderBinder = null;
             }
         }
-    };    
+    }
 
+    ;
 
 
     /**
@@ -1368,39 +1385,39 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     /**
      * 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);
+            onMoveFileOperationFinish((MoveFileOperation) operation, result);
         }
-        
+
     }
 
-    
+
     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
             refreshShowDetails();
@@ -1408,55 +1425,55 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         }
     }
 
-    
+
     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 {
                     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); 
+
+        Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                Toast.LENGTH_LONG);
         msg.show();
-        
+
         if (result.isSuccess()) {
             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();
@@ -1472,14 +1489,14 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             }
         }
     }
-    
-    
+
+
     /**
-     * Updates the view associated to the activity after the finish of an operation trying to move a 
+     * 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.
+     *
+     * @param operation Move operation performed.
+     * @param result    Result of the move operation.
      */
     private void onMoveFileOperationFinish(MoveFileOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
@@ -1488,24 +1505,24 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         } else {
             dismissLoadingDialog();
             try {
-                Toast msg = Toast.makeText(FileDisplayActivity.this, 
-                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), 
-                        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();
@@ -1513,30 +1530,37 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         if (result.isSuccess()) {
             FileFragment details = getSecondFragment();
             if (details != null) {
-                if (details instanceof FileDetailFragment && renamedFile.equals(details.getFile()) ) {
+                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();
+                        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);
+                    }
                 }
             }
-            
+
             if (getStorageManager().getFileById(renamedFile.getParentId()).equals(getCurrentDir())) {
                 refreshListOfFilesFragment();
             }
 
         } else {
-            Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), 
-                    Toast.LENGTH_LONG); 
+            Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                    Toast.LENGTH_LONG);
             msg.show();
-            
+
             if (result.isSslRecoverableException()) {
                 mLastSslUntrustedServerResult = result;
                 showUntrustedCertDialog(mLastSslUntrustedServerResult);
@@ -1554,15 +1578,15 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, getAccount());
                 startActivity(i);
 
-            } 
-            
+            }
+
         } else {
             if (operation.transferWasRequested()) {
                 onTransferStateChanged(syncedFile, true, true);
-                
+
             } else {
-                Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), 
-                        Toast.LENGTH_LONG); 
+                Toast msg = Toast.makeText(this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
+                        Toast.LENGTH_LONG);
                 msg.show();
             }
         }
@@ -1570,9 +1594,9 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     /**
      * 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.
+     *
+     * @param operation Creation operation performed.
+     * @param result    Result of the creation.
      */
     private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
         if (result.isSuccess()) {
@@ -1581,18 +1605,18 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         } else {
             dismissLoadingDialog();
             try {
-                Toast msg = Toast.makeText(FileDisplayActivity.this, 
-                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), 
-                        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);
             }
         }
     }
 
-    
+
     /**
      * {@inheritDoc}
      */
@@ -1600,18 +1624,18 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
     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 {
                 if (!file.fileExists()) {
                     cleanSecondFragment();
                 } else {
-                    ((FileDetailFragment)details).updateFileDetails(false, true);
+                    ((FileDetailFragment) details).updateFileDetails(false, true);
                 }
             }
         }
-            
+
     }
 
 
@@ -1638,40 +1662,40 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         }
         return null;
     }
-    
+
     public void startSyncFolderOperation(OCFile folder, boolean ignoreETag) {
-        long currentSyncTime = System.currentTimeMillis(); 
-        
+        long currentSyncTime = System.currentTimeMillis();
+
         mSyncInProgress = true;
-                
+
         // perform folder synchronization
-        RemoteOperation synchFolderOp = new SynchronizeFolderOperation( folder,  
-                                                                        currentSyncTime, 
-                                                                        false,
-                                                                        getFileOperationsHelper().isSharedSupported(),
-                                                                        ignoreETag,
-                                                                        getStorageManager(), 
-                                                                        getAccount(), 
-                                                                        getApplicationContext()
-                                                                      );
+        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)) {
@@ -1681,46 +1705,45 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
             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);
         showDetailsIntent.putExtra(EXTRA_FILE, file);
         showDetailsIntent.putExtra(EXTRA_ACCOUNT, getAccount());
         startActivity(showDetailsIntent);
-        
     }
 
     /**
      * 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);
@@ -1730,12 +1753,28 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         setFile(file);
     }
 
+    /**
+     * 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());
@@ -1750,7 +1789,7 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
 
     public void cancelTransference(OCFile file) {
         getFileOperationsHelper().cancelTransference(file);
-        if (mWaitingToPreview != null && 
+        if (mWaitingToPreview != null &&
                 mWaitingToPreview.getRemotePath().equals(file.getRemotePath())) {
             mWaitingToPreview = null;
         }
@@ -1783,15 +1822,15 @@ OnSslUntrustedCertListener, OnEnforceableRefreshListener {
         }
     }
 
-    private void sortByDate(boolean ascending){
+    private void sortByDate(boolean ascending) {
         getListOfFilesFragment().sortByDate(ascending);
     }
 
-    private void sortBySize(boolean ascending){
+    private void sortBySize(boolean ascending) {
         getListOfFilesFragment().sortBySize(ascending);
     }
 
-    private void sortByName(boolean ascending){
+    private void sortByName(boolean ascending) {
         getListOfFilesFragment().sortByName(ascending);
     }
 }
diff --git a/src/com/owncloud/android/ui/fragment/OCFileListFragment.java b/src/com/owncloud/android/ui/fragment/OCFileListFragment.java
index 0b1059fc03..dc11826996 100644
--- a/src/com/owncloud/android/ui/fragment/OCFileListFragment.java
+++ b/src/com/owncloud/android/ui/fragment/OCFileListFragment.java
@@ -44,6 +44,7 @@ import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
 import com.owncloud.android.ui.dialog.RenameFileDialogFragment;
 import com.owncloud.android.ui.preview.PreviewImageFragment;
 import com.owncloud.android.ui.preview.PreviewMediaFragment;
+import com.owncloud.android.ui.preview.PreviewTextFragment;
 
 /**
  * A Fragment that lists all files and folders in a given path.
@@ -125,7 +126,7 @@ public class OCFileListFragment extends ExtendedListFragment {
                 mContainerActivity
         );
         setListAdapter(mAdapter);
-        
+
         registerForContextMenu(getListView());
         getListView().setOnCreateContextMenuListener(this);
   }
@@ -201,7 +202,8 @@ public class OCFileListFragment extends ExtendedListFragment {
                 if (PreviewImageFragment.canBePreviewed(file)) {
                     // preview image - it handles the download, if needed
                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
-                    
+                } else if (PreviewTextFragment.canBePreviewed(file)){
+                    ((FileDisplayActivity)mContainerActivity).startTextPreview(file);
                 } else if (file.isDown()) {
                     if (PreviewMediaFragment.canBePreviewed(file)) {
                         // media preview
diff --git a/src/com/owncloud/android/ui/preview/PreviewTextFragment.java b/src/com/owncloud/android/ui/preview/PreviewTextFragment.java
new file mode 100644
index 0000000000..d0a678c8af
--- /dev/null
+++ b/src/com/owncloud/android/ui/preview/PreviewTextFragment.java
@@ -0,0 +1,341 @@
+package com.owncloud.android.ui.preview;
+
+import android.accounts.Account;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import com.actionbarsherlock.view.Menu;
+import com.actionbarsherlock.view.MenuInflater;
+import com.actionbarsherlock.view.MenuItem;
+import com.owncloud.android.R;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.files.FileMenuFilter;
+import com.owncloud.android.lib.common.utils.Log_OC;
+import com.owncloud.android.ui.activity.FileDisplayActivity;
+import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
+import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
+import com.owncloud.android.ui.fragment.FileFragment;
+
+import java.io.BufferedWriter;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.Scanner;
+
+public class PreviewTextFragment extends FileFragment {
+    private static final String EXTRA_FILE = "FILE";
+    private static final String EXTRA_ACCOUNT = "ACCOUNT";
+    private static final String TAG = PreviewTextFragment.class.getSimpleName();
+
+    private Account mAccount;
+    private TextView mTextPreview;
+    private ProgressBar mProgressBar;
+    private ScrollView mScrollView;
+
+    /**
+     * Creates an empty fragment for previews.
+     * <p/>
+     * MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically
+     * (for instance, when the device is turned a aside).
+     * <p/>
+     * DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful
+     * construction
+     */
+    public PreviewTextFragment() {
+        super();
+        mAccount = null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        super.onCreateView(inflater, container, savedInstanceState);
+        Log_OC.e(TAG, "onCreateView");
+
+
+        View ret = inflater.inflate(R.layout.text_file_preview, container, false);
+
+        mScrollView = (ScrollView) ret.findViewById(R.id.text_scrollview);
+        mTextPreview = (TextView) ret.findViewById(R.id.text_preview);
+        mProgressBar = (ProgressBar) ret.findViewById(R.id.progress_bar);
+
+        return ret;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        OCFile file = getFile();
+
+        Bundle args = getArguments();
+
+        if (file == null)
+            file = args.getParcelable(FileDisplayActivity.EXTRA_FILE);
+
+        if (mAccount == null)
+            mAccount = args.getParcelable(FileDisplayActivity.EXTRA_ACCOUNT);
+
+
+        if (savedInstanceState == null) {
+            if (file == null) {
+                throw new IllegalStateException("Instanced with a NULL OCFile");
+            }
+            if (mAccount == null) {
+                throw new IllegalStateException("Instanced with a NULL ownCloud Account");
+            }
+        } else {
+            file = savedInstanceState.getParcelable(EXTRA_FILE);
+            mAccount = savedInstanceState.getParcelable(EXTRA_ACCOUNT);
+        }
+        setFile(file);
+        setHasOptionsMenu(true);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putParcelable(PreviewImageFragment.EXTRA_FILE, getFile());
+        outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        Log_OC.e(TAG, "onStart");
+
+        loadAndShowTextPreview(getFile().getStoragePath(), mTextPreview);
+    }
+
+    private void loadAndShowTextPreview(String location, TextView textView) {
+        new TextLoadAsyncTask().execute(location, textView);
+    }
+
+    /**
+     * Reads the file to preview and shows its contents. Too critical to be anonymous.
+     */
+    private class TextLoadAsyncTask extends AsyncTask<Object, Void, StringWriter> {
+        TextView mTextView;
+
+        @Override
+        protected void onPreExecute() {
+            mProgressBar.setVisibility(View.VISIBLE);
+        }
+
+        @Override
+        protected StringWriter doInBackground(java.lang.Object... params) {
+            if (params.length != 2)
+                throw new IllegalArgumentException("The parameters to " + TextLoadAsyncTask.class.getName() + " must be (1) the file location and (2) the text view to update");
+            final String location = (String) params[0];
+            mTextView = (TextView) params[1];
+
+            FileInputStream inputStream = null;
+            Scanner sc = null;
+            StringWriter source = new StringWriter();
+            BufferedWriter bufferedWriter = new BufferedWriter(source);
+            try {
+                inputStream = new FileInputStream(location);
+                sc = new Scanner(inputStream);
+                while (sc.hasNextLine()) {
+                    bufferedWriter.append(sc.nextLine());
+                    if (sc.hasNextLine()) bufferedWriter.append("\n");
+                }
+                bufferedWriter.close();
+                IOException exc = sc.ioException();
+                if (exc != null) throw exc;
+            } catch (IOException e) {
+                finish();
+            } finally {
+                if (inputStream != null) {
+                    try {
+                        inputStream.close();
+                    } catch (IOException e) {
+                        finish();
+                    }
+                }
+                if (sc != null) {
+                    sc.close();
+                }
+            }
+            return source;
+        }
+
+        @Override
+        protected void onPostExecute(final StringWriter stringWriter) {
+            super.onPostExecute(stringWriter);
+            mProgressBar.setVisibility(View.GONE);
+            mScrollView.setVisibility(View.VISIBLE);
+            mTextView.setText(new String(stringWriter.getBuffer()));
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        inflater.inflate(R.menu.file_actions_menu, menu);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onPrepareOptionsMenu(Menu menu) {
+        super.onPrepareOptionsMenu(menu);
+
+        if (mContainerActivity.getStorageManager() != null) {
+            FileMenuFilter mf = new FileMenuFilter(
+                    getFile(),
+                    mContainerActivity.getStorageManager().getAccount(),
+                    mContainerActivity,
+                    getSherlockActivity()
+            );
+            mf.filter(menu);
+        }
+
+        // additional restriction for this fragment
+        MenuItem item = menu.findItem(R.id.action_rename_file);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+
+        // additional restriction for this fragment
+        item = menu.findItem(R.id.action_move);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+
+        // this one doesn't make sense since the file has to be down in order to be previewed
+        item = menu.findItem(R.id.action_download_file);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_share_file: {
+                mContainerActivity.getFileOperationsHelper().shareFileWithLink(getFile());
+                return true;
+            }
+            case R.id.action_unshare_file: {
+                mContainerActivity.getFileOperationsHelper().unshareFileWithLink(getFile());
+                return true;
+            }
+            case R.id.action_open_file_with: {
+                openFile();
+                return true;
+            }
+            case R.id.action_remove_file: {
+                RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(getFile());
+                dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
+                return true;
+            }
+            case R.id.action_see_details: {
+                seeDetails();
+                return true;
+            }
+            case R.id.action_send_file: {
+                sendFile();
+                return true;
+            }
+            case R.id.action_sync_file: {
+                mContainerActivity.getFileOperationsHelper().syncFile(getFile());
+                return true;
+            }
+
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Update the file of the fragment with file value
+     *
+     * @param file
+     */
+    public void updateFile(OCFile file) {
+        setFile(file);
+    }
+
+    private void sendFile() {
+        mContainerActivity.getFileOperationsHelper().sendDownloadedFile(getFile());
+    }
+
+    private void seeDetails() {
+        mContainerActivity.showDetails(getFile());
+    }
+
+    @Override
+    public void onPause() {
+        Log_OC.e(TAG, "onPause");
+        super.onPause();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Log_OC.e(TAG, "onResume");
+    }
+
+    @Override
+    public void onDestroy() {
+        Log_OC.e(TAG, "onDestroy");
+        super.onDestroy();
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        Log_OC.e(TAG, "onStop");
+    }
+
+    /**
+     * Opens the previewed file with an external application.
+     */
+    private void openFile() {
+        mContainerActivity.getFileOperationsHelper().openFile(getFile());
+        finish();
+    }
+
+    /**
+     * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewTextFragment} to be previewed.
+     *
+     * @param file File to test if can be previewed.
+     * @return 'True' if the file can be handled by the fragment.
+     */
+    public static boolean canBePreviewed(OCFile file) {
+        return (file != null && file.isDown() && file.isText());
+    }
+
+    /**
+     * Finishes the preview
+     */
+    private void finish() {
+        getSherlockActivity().onBackPressed();
+    }
+}