src/com/owncloud/android/ui/preview/PreviewMediaFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17 package com.owncloud.android.ui.preview;
  18
  19 import java.util.ArrayList;
  20 import java.util.List;
  21
  22 import android.accounts.Account;
  23 import android.app.Activity;
  24 import android.app.AlertDialog;
  25 import android.content.ActivityNotFoundException;
  26 import android.content.ComponentName;
  27 import android.content.Context;
  28 import android.content.DialogInterface;
  29 import android.content.Intent;
  30 import android.content.ServiceConnection;
  31 import android.content.res.Configuration;
  32 import android.media.MediaPlayer;
  33 import android.media.MediaPlayer.OnCompletionListener;
  34 import android.media.MediaPlayer.OnErrorListener;
  35 import android.media.MediaPlayer.OnPreparedListener;
  36 import android.net.Uri;
  37 import android.os.Build;
  38 import android.os.Bundle;
  39 import android.os.Handler;
  40 import android.os.IBinder;
  41 import android.view.LayoutInflater;
  42 import android.view.MotionEvent;
  43 import android.view.View;
  44 import android.view.View.OnTouchListener;
  45 import android.view.ViewGroup;
  46 import android.webkit.MimeTypeMap;
  47 import android.widget.ImageView;
  48 import android.widget.Toast;
  49 import android.widget.VideoView;
  50
  51 import com.actionbarsherlock.view.Menu;
  52 import com.actionbarsherlock.view.MenuInflater;
  53 import com.actionbarsherlock.view.MenuItem;
  54 import com.owncloud.android.R;
  55 import com.owncloud.android.datamodel.FileDataStorageManager;
  56 import com.owncloud.android.datamodel.OCFile;
  57 import com.owncloud.android.media.MediaControlView;
  58 import com.owncloud.android.media.MediaService;
  59 import com.owncloud.android.media.MediaServiceBinder;
  60 import com.owncloud.android.lib.common.network.WebdavUtils;
  61 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  62 import com.owncloud.android.lib.common.operations.RemoteOperation;
  63 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  64 import com.owncloud.android.operations.RemoveFileOperation;
  65 import com.owncloud.android.ui.activity.FileActivity;
  66 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  67 import com.owncloud.android.ui.fragment.FileFragment;
  68 import com.owncloud.android.utils.Log_OC;
  69
  70
  71 /**
  72  * This fragment shows a preview of a downloaded media file (audio or video).
  73  *
  74  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  75  *
  76  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  77  *
  78  * @author David A. Velasco
  79  */
  80 public class PreviewMediaFragment extends FileFragment implements
  81         OnTouchListener,
  82         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  83
  84     public static final String EXTRA_FILE = "FILE";
  85     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  86     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  87     private static final String EXTRA_PLAYING = "PLAYING";
  88
  89     private View mView;
  90     private Account mAccount;
  91     private ImageView mImagePreview;
  92     private VideoView mVideoPreview;
  93     private int mSavedPlaybackPosition;
  94
  95     private Handler mHandler;
  96     private RemoteOperation mLastRemoteOperation;
  97
  98     private MediaServiceBinder mMediaServiceBinder = null;
  99     private MediaControlView mMediaController = null;
 100     private MediaServiceConnection mMediaServiceConnection = null;
 101     private VideoHelper mVideoHelper;
 102     private boolean mAutoplay;
 103     public boolean mPrepared;
 104
 105     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 106
 107
 108     /**
 109      * Creates a fragment to preview a file.
 110      *
 111      * When 'fileToDetail' or 'ocAccount' are null
 112      *
 113      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 114      * @param ocAccount         An ownCloud account; needed to start downloads
 115      */
 116     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount, int startPlaybackPosition, boolean autoplay) {
 117         super(fileToDetail);
 118         mAccount = ocAccount;
 119         mSavedPlaybackPosition = startPlaybackPosition;
 120         mAutoplay = autoplay;
 121     }
 122
 123
 124     /**
 125      *  Creates an empty fragment for previews.
 126      *
 127      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 128      *
 129      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 130      */
 131     public PreviewMediaFragment() {
 132         super();
 133         mAccount = null;
 134         mSavedPlaybackPosition = 0;
 135         mAutoplay = true;
 136     }
 137
 138
 139     /**
 140      * {@inheritDoc}
 141      */
 142     @Override
 143     public void onCreate(Bundle savedInstanceState) {
 144         super.onCreate(savedInstanceState);
 145         mHandler = new Handler();
 146         setHasOptionsMenu(true);
 147     }
 148
 149
 150     /**
 151      * {@inheritDoc}
 152      */
 153     @Override
 154     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 155             Bundle savedInstanceState) {
 156         super.onCreateView(inflater, container, savedInstanceState);
 157         Log_OC.e(TAG, "onCreateView");
 158
 159
 160         mView = inflater.inflate(R.layout.file_preview, container, false);
 161
 162         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 163         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 164         mVideoPreview.setOnTouchListener(this);
 165
 166         mMediaController = (MediaControlView)mView.findViewById(R.id.media_controller);
 167
 168         return mView;
 169     }
 170
 171
 172     /**
 173      * {@inheritDoc}
 174      */
 175     @Override
 176     public void onAttach(Activity activity) {
 177         super.onAttach(activity);
 178         Log_OC.e(TAG, "onAttach");
 179
 180         if (!(activity instanceof FileFragment.ContainerActivity))
 181             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 182     }
 183
 184
 185     /**
 186      * {@inheritDoc}
 187      */
 188     @Override
 189     public void onActivityCreated(Bundle savedInstanceState) {
 190         super.onActivityCreated(savedInstanceState);
 191         Log_OC.e(TAG, "onActivityCreated");
 192
 193         if (savedInstanceState != null) {
 194             setFile((OCFile)savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE));
 195             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 196             mSavedPlaybackPosition = savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 197             mAutoplay = savedInstanceState.getBoolean(PreviewMediaFragment.EXTRA_PLAYING);
 198
 199         }
 200         OCFile file = getFile();
 201         if (file == null) {
 202             throw new IllegalStateException("Instanced with a NULL OCFile");
 203         }
 204         if (mAccount == null) {
 205             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 206         }
 207         if (!file.isDown()) {
 208             throw new IllegalStateException("There is no local file to preview");
 209         }
 210         if (file.isVideo()) {
 211             mVideoPreview.setVisibility(View.VISIBLE);
 212             mImagePreview.setVisibility(View.GONE);
 213             prepareVideo();
 214
 215         } else {
 216             mVideoPreview.setVisibility(View.GONE);
 217             mImagePreview.setVisibility(View.VISIBLE);
 218         }
 219
 220     }
 221
 222
 223     /**
 224      * {@inheritDoc}
 225      */
 226     @Override
 227     public void onSaveInstanceState(Bundle outState) {
 228         super.onSaveInstanceState(outState);
 229         Log_OC.e(TAG, "onSaveInstanceState");
 230
 231         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, getFile());
 232         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 233
 234         if (getFile().isVideo()) {
 235             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 236             mAutoplay = mVideoPreview.isPlaying();
 237             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mSavedPlaybackPosition);
 238             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mAutoplay);
 239         } else {
 240             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mMediaServiceBinder.getCurrentPosition());
 241             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mMediaServiceBinder.isPlaying());
 242         }
 243     }
 244
 245
 246     @Override
 247     public void onStart() {
 248         super.onStart();
 249         Log_OC.e(TAG, "onStart");
 250
 251         OCFile file = getFile();
 252         if (file != null) {
 253            if (file.isAudio()) {
 254                bindMediaService();
 255
 256            } else if (file.isVideo()) {
 257                stopAudio();
 258                playVideo();
 259            }
 260         }
 261     }
 262
 263
 264     private void stopAudio() {
 265         Intent i = new Intent(getSherlockActivity(), MediaService.class);
 266         i.setAction(MediaService.ACTION_STOP_ALL);
 267         getSherlockActivity().startService(i);
 268     }
 269
 270
 271     /**
 272      * {@inheritDoc}
 273      */
 274     @Override
 275     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 276         super.onCreateOptionsMenu(menu, inflater);
 277
 278         inflater.inflate(R.menu.file_actions_menu, menu);
 279         List<Integer> toHide = new ArrayList<Integer>();
 280
 281         MenuItem item = null;
 282         toHide.add(R.id.action_cancel_download);
 283         toHide.add(R.id.action_cancel_upload);
 284         toHide.add(R.id.action_download_file);
 285         toHide.add(R.id.action_sync_file);
 286         toHide.add(R.id.action_rename_file);    // by now
 287
 288         // Options shareLink
 289         if (!getFile().isShareByLink()) {
 290             toHide.add(R.id.action_unshare_file);
 291         }
 292
 293         // Send file
 294         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 295         if (!sendEnabled) {
 296             toHide.add(R.id.action_send_file);
 297         }
 298
 299         for (int i : toHide) {
 300             item = menu.findItem(i);
 301             if (item != null) {
 302                 item.setVisible(false);
 303                 item.setEnabled(false);
 304             }
 305         }
 306
 307     }
 308
 309
 310     /**
 311      * {@inheritDoc}
 312      */
 313     @Override
 314     public void onPrepareOptionsMenu(Menu menu) {
 315         super.onPrepareOptionsMenu(menu);
 316
 317         MenuItem item = menu.findItem(R.id.action_unshare_file);
 318         // Options shareLink
 319         if (!getFile().isShareByLink()) {
 320             item.setVisible(false);
 321             item.setEnabled(false);
 322         } else {
 323             item.setVisible(true);
 324             item.setEnabled(true);
 325         }
 326     }
 327
 328
 329     /**
 330      * {@inheritDoc}
 331      */
 332     @Override
 333     public boolean onOptionsItemSelected(MenuItem item) {
 334         switch (item.getItemId()) {
 335             case R.id.action_share_file: {
 336                 shareFileWithLink();
 337                 return true;
 338             }
 339             case R.id.action_unshare_file: {
 340                 unshareFileWithLink();
 341                 return true;
 342             }
 343             case R.id.action_open_file_with: {
 344                 openFile();
 345                 return true;
 346             }
 347             case R.id.action_remove_file: {
 348                 removeFile();
 349                 return true;
 350             }
 351             case R.id.action_see_details: {
 352                 seeDetails();
 353                 return true;
 354             }
 355             case R.id.action_send_file: {
 356                 sendFile();
 357             }
 358
 359             default:
 360                 return false;
 361         }
 362     }
 363
 364
 365
 366     /**
 367      * Update the file of the fragment with file value
 368      * @param file
 369      */
 370     public void updateFile(OCFile file){
 371         setFile(file);
 372     }
 373
 374     private void unshareFileWithLink() {
 375         stopPreview(false);
 376         FileActivity activity = (FileActivity)getSherlockActivity();
 377         activity.getFileOperationsHelper().unshareFileWithLink(getFile(), activity);
 378     }
 379
 380     private void shareFileWithLink() {
 381         stopPreview(false);
 382         FileActivity activity = (FileActivity)getSherlockActivity();
 383         activity.getFileOperationsHelper().shareFileWithLink(getFile(), activity);
 384
 385     }
 386
 387     private void sendFile() {
 388         stopPreview(false);
 389         FileActivity activity = (FileActivity)getSherlockActivity();
 390         activity.getFileOperationsHelper().sendDownloadedFile(getFile(), activity);
 391
 392     }
 393
 394     private void seeDetails() {
 395         stopPreview(false);
 396         ((FileFragment.ContainerActivity)getSherlockActivity()).showDetails(getFile());
 397     }
 398
 399
 400     private void prepareVideo() {
 401         // create helper to get more control on the playback
 402         mVideoHelper = new VideoHelper();
 403         mVideoPreview.setOnPreparedListener(mVideoHelper);
 404         mVideoPreview.setOnCompletionListener(mVideoHelper);
 405         mVideoPreview.setOnErrorListener(mVideoHelper);
 406     }
 407
 408     private void playVideo() {
 409         // create and prepare control panel for the user
 410         mMediaController.setMediaPlayer(mVideoPreview);
 411
 412         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 413         mVideoPreview.setVideoPath(getFile().getStoragePath());
 414     }
 415
 416
 417     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 418
 419         /**
 420          * Called when the file is ready to be played.
 421          *
 422          * Just starts the playback.
 423          *
 424          * @param   mp    {@link MediaPlayer} instance performing the playback.
 425          */
 426         @Override
 427         public void onPrepared(MediaPlayer vp) {
 428             Log_OC.e(TAG, "onPrepared");
 429             mVideoPreview.seekTo(mSavedPlaybackPosition);
 430             if (mAutoplay) {
 431                 mVideoPreview.start();
 432             }
 433             mMediaController.setEnabled(true);
 434             mMediaController.updatePausePlay();
 435             mPrepared = true;
 436         }
 437
 438
 439         /**
 440          * Called when the file is finished playing.
 441          *
 442          * Finishes the activity.
 443          *
 444          * @param   mp    {@link MediaPlayer} instance performing the playback.
 445          */
 446         @Override
 447         public void onCompletion(MediaPlayer  mp) {
 448             Log_OC.e(TAG, "completed");
 449             if (mp != null) {
 450                 mVideoPreview.seekTo(0);
 451                 // next lines are necessary to work around undesired video loops
 452                 if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD) {
 453                     mVideoPreview.pause();
 454
 455                 } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD_MR1) {
 456                     // mVideePreview.pause() is not enough
 457
 458                     mMediaController.setEnabled(false);
 459                     mVideoPreview.stopPlayback();
 460                     mAutoplay = false;
 461                     mSavedPlaybackPosition = 0;
 462                     mVideoPreview.setVideoPath(getFile().getStoragePath());
 463                 }
 464             } // else : called from onError()
 465             mMediaController.updatePausePlay();
 466         }
 467
 468
 469         /**
 470          * Called when an error in playback occurs.
 471          *
 472          * @param   mp      {@link MediaPlayer} instance performing the playback.
 473          * @param   what    Type of error
 474          * @param   extra   Extra code specific to the error
 475          */
 476         @Override
 477         public boolean onError(MediaPlayer mp, int what, int extra) {
 478             if (mVideoPreview.getWindowToken() != null) {
 479                 String message = MediaService.getMessageForMediaError(getSherlockActivity(), what, extra);
 480                 new AlertDialog.Builder(getSherlockActivity())
 481                         .setMessage(message)
 482                         .setPositiveButton(android.R.string.VideoView_error_button,
 483                                 new DialogInterface.OnClickListener() {
 484                                     public void onClick(DialogInterface dialog, int whichButton) {
 485                                         dialog.dismiss();
 486                                         VideoHelper.this.onCompletion(null);
 487                                     }
 488                                 })
 489                         .setCancelable(false)
 490                         .show();
 491             }
 492             return true;
 493         }
 494
 495     }
 496
 497
 498     @Override
 499     public void onPause() {
 500         super.onPause();
 501         Log_OC.e(TAG, "onPause");
 502     }
 503
 504     @Override
 505     public void onResume() {
 506         super.onResume();
 507         Log_OC.e(TAG, "onResume");
 508     }
 509
 510     @Override
 511     public void onDestroy() {
 512         super.onDestroy();
 513         Log_OC.e(TAG, "onDestroy");
 514     }
 515
 516     @Override
 517     public void onStop() {
 518         Log_OC.e(TAG, "onStop");
 519         super.onStop();
 520
 521         mPrepared = false;
 522         if (mMediaServiceConnection != null) {
 523             Log_OC.d(TAG, "Unbinding from MediaService ...");
 524             if (mMediaServiceBinder != null && mMediaController != null) {
 525                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 526             }
 527             getSherlockActivity().unbindService(mMediaServiceConnection);
 528             mMediaServiceConnection = null;
 529             mMediaServiceBinder = null;
 530         }
 531     }
 532
 533     @Override
 534     public boolean onTouch(View v, MotionEvent event) {
 535         if (event.getAction() == MotionEvent.ACTION_DOWN && v == mVideoPreview) {
 536             startFullScreenVideo();
 537             return true;
 538         }
 539         return false;
 540     }
 541
 542
 543     private void startFullScreenVideo() {
 544         Intent i = new Intent(getSherlockActivity(), PreviewVideoActivity.class);
 545         i.putExtra(FileActivity.EXTRA_ACCOUNT, mAccount);
 546         i.putExtra(FileActivity.EXTRA_FILE, getFile());
 547         i.putExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, mVideoPreview.isPlaying());
 548         mVideoPreview.pause();
 549         i.putExtra(PreviewVideoActivity.EXTRA_START_POSITION, mVideoPreview.getCurrentPosition());
 550         startActivityForResult(i, 0);
 551     }
 552
 553     @Override
 554     public void onConfigurationChanged (Configuration newConfig) {
 555         Log_OC.e(TAG, "onConfigurationChanged " + this);
 556     }
 557
 558     @Override
 559     public void onActivityResult (int requestCode, int resultCode, Intent data) {
 560         Log_OC.e(TAG, "onActivityResult " + this);
 561         super.onActivityResult(requestCode, resultCode, data);
 562         if (resultCode == Activity.RESULT_OK) {
 563             mSavedPlaybackPosition = data.getExtras().getInt(PreviewVideoActivity.EXTRA_START_POSITION);
 564             mAutoplay = data.getExtras().getBoolean(PreviewVideoActivity.EXTRA_AUTOPLAY);
 565         }
 566     }
 567
 568
 569     private void playAudio() {
 570         OCFile file = getFile();
 571         if (!mMediaServiceBinder.isPlaying(file)) {
 572             Log_OC.d(TAG, "starting playback of " + file.getStoragePath());
 573             mMediaServiceBinder.start(mAccount, file, mAutoplay, mSavedPlaybackPosition);
 574
 575         } else {
 576             if (!mMediaServiceBinder.isPlaying() && mAutoplay) {
 577                 mMediaServiceBinder.start();
 578                 mMediaController.updatePausePlay();
 579             }
 580         }
 581     }
 582
 583
 584     private void bindMediaService() {
 585         Log_OC.d(TAG, "Binding to MediaService...");
 586         if (mMediaServiceConnection == null) {
 587             mMediaServiceConnection = new MediaServiceConnection();
 588         }
 589         getSherlockActivity().bindService(  new Intent(getSherlockActivity(),
 590                                     MediaService.class),
 591                                     mMediaServiceConnection,
 592                                     Context.BIND_AUTO_CREATE);
 593             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 594     }
 595
 596     /** Defines callbacks for service binding, passed to bindService() */
 597     private class MediaServiceConnection implements ServiceConnection {
 598
 599         @Override
 600         public void onServiceConnected(ComponentName component, IBinder service) {
 601             if (getSherlockActivity() != null) {
 602                 if (component.equals(new ComponentName(getSherlockActivity(), MediaService.class))) {
 603                     Log_OC.d(TAG, "Media service connected");
 604                     mMediaServiceBinder = (MediaServiceBinder) service;
 605                     if (mMediaServiceBinder != null) {
 606                         prepareMediaController();
 607                         playAudio();    // do not wait for the touch of nobody to play audio
 608
 609                         Log_OC.d(TAG, "Successfully bound to MediaService, MediaController ready");
 610
 611                     } else {
 612                         Log_OC.e(TAG, "Unexpected response from MediaService while binding");
 613                     }
 614                 }
 615             }
 616         }
 617
 618         private void prepareMediaController() {
 619             mMediaServiceBinder.registerMediaController(mMediaController);
 620             if (mMediaController != null) {
 621                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 622                 mMediaController.setEnabled(true);
 623                 mMediaController.updatePausePlay();
 624             }
 625         }
 626
 627         @Override
 628         public void onServiceDisconnected(ComponentName component) {
 629             if (component.equals(new ComponentName(getSherlockActivity(), MediaService.class))) {
 630                 Log_OC.e(TAG, "Media service suddenly disconnected");
 631                 if (mMediaController != null) {
 632                     mMediaController.setMediaPlayer(null);
 633                 } else {
 634                     Toast.makeText(getSherlockActivity(), "No media controller to release when disconnected from media service", Toast.LENGTH_SHORT).show();
 635                 }
 636                 mMediaServiceBinder = null;
 637                 mMediaServiceConnection = null;
 638             }
 639         }
 640     }
 641
 642
 643
 644     /**
 645      * Opens the previewed file with an external application.
 646      *
 647      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 648      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 649      * available apps for the MIME type known from the file extension, to let the user choose
 650      */
 651     private void openFile() {
 652         OCFile file = getFile();
 653         stopPreview(true);
 654         String storagePath = file.getStoragePath();
 655         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 656         try {
 657             Intent i = new Intent(Intent.ACTION_VIEW);
 658             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 659             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 660             startActivity(i);
 661
 662         } catch (Throwable t) {
 663             Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + file.getMimetype());
 664             boolean toastIt = true;
 665             String mimeType = "";
 666             try {
 667                 Intent i = new Intent(Intent.ACTION_VIEW);
 668                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 669                 if (mimeType == null || !mimeType.equals(file.getMimetype())) {
 670                     if (mimeType != null) {
 671                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 672                     } else {
 673                         // desperate try
 674                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 675                     }
 676                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 677                     startActivity(i);
 678                     toastIt = false;
 679                 }
 680
 681             } catch (IndexOutOfBoundsException e) {
 682                 Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 683
 684             } catch (ActivityNotFoundException e) {
 685                 Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 686
 687             } catch (Throwable th) {
 688                 Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 689
 690             } finally {
 691                 if (toastIt) {
 692                     Toast.makeText(getSherlockActivity(), "There is no application to handle file " + file.getFileName(), Toast.LENGTH_SHORT).show();
 693                 }
 694             }
 695
 696         }
 697         finish();
 698     }
 699
 700     /**
 701      * Starts a the removal of the previewed file.
 702      *
 703      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 704      * depending upon the user selection in the dialog.
 705      */
 706     private void removeFile() {
 707         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 708                 R.string.confirmation_remove_alert,
 709                 new String[]{getFile().getFileName()},
 710                 R.string.confirmation_remove_remote_and_local,
 711                 R.string.confirmation_remove_local,
 712                 R.string.common_cancel);
 713         confDialog.setOnConfirmationListener(this);
 714         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 715     }
 716
 717
 718     /**
 719      * Performs the removal of the previewed file, both locally and in the server.
 720      */
 721     @Override
 722     public void onConfirmation(String callerTag) {
 723         OCFile file = getFile();
 724         FileDataStorageManager storageManager =
 725                 ((FileActivity)getSherlockActivity()).getStorageManager();
 726         if (storageManager.getFileById(file.getFileId()) != null) {   // check that the file is still there;
 727             stopPreview(true);
 728             mLastRemoteOperation = new RemoveFileOperation( file,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 729                                                             true,
 730                                                             storageManager);
 731             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 732
 733             ((FileActivity) getSherlockActivity()).showLoadingDialog();
 734         }
 735     }
 736
 737
 738     /**
 739      * Removes the file from local storage
 740      */
 741     @Override
 742     public void onNeutral(String callerTag) {
 743         OCFile file = getFile();
 744         stopPreview(true);
 745         ((FileActivity)getSherlockActivity()).getStorageManager().removeFile(file, false, true);    // TODO perform in background task / new thread
 746         finish();
 747     }
 748
 749     /**
 750      * User cancelled the removal action.
 751      */
 752     @Override
 753     public void onCancel(String callerTag) {
 754         // nothing to do here
 755     }
 756
 757
 758     /**
 759      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 760      *
 761      * @param file      File to test if can be previewed.
 762      * @return          'True' if the file can be handled by the fragment.
 763      */
 764     public static boolean canBePreviewed(OCFile file) {
 765         return (file != null && (file.isAudio() || file.isVideo()));
 766     }
 767
 768     /**
 769      * {@inheritDoc}
 770      */
 771     @Override
 772     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 773         if (operation.equals(mLastRemoteOperation)) {
 774             if (operation instanceof RemoveFileOperation) {
 775                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 776             }
 777         }
 778     }
 779
 780     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 781         ((FileActivity) getSherlockActivity()).dismissLoadingDialog();
 782         if (result.isSuccess()) {
 783             Toast msg = Toast.makeText(getSherlockActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 784             msg.show();
 785             finish();
 786
 787         } else {
 788             Toast msg = Toast.makeText(getSherlockActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 789             msg.show();
 790             if (result.isSslRecoverableException()) {
 791                 // TODO show the SSL warning dialog
 792             }
 793         }
 794     }
 795
 796     private void stopPreview(boolean stopAudio) {
 797         OCFile file = getFile();
 798         if (file.isAudio() && stopAudio) {
 799             mMediaServiceBinder.pause();
 800
 801         } else if (file.isVideo()) {
 802             mVideoPreview.stopPlayback();
 803         }
 804     }
 805
 806
 807
 808     /**
 809      * Finishes the preview
 810      */
 811     private void finish() {
 812         getSherlockActivity().onBackPressed();
 813     }
 814
 815
 816     public int getPosition() {
 817         if (mPrepared) {
 818             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 819         }
 820         Log_OC.e(TAG, "getting position: " + mSavedPlaybackPosition);
 821         return mSavedPlaybackPosition;
 822     }
 823
 824     public boolean isPlaying() {
 825         if (mPrepared) {
 826             mAutoplay = mVideoPreview.isPlaying();
 827         }
 828         return mAutoplay;
 829     }
 830
 831 }