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.activity.FileDisplayActivity;
  67 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  68 import com.owncloud.android.ui.fragment.FileFragment;
  69 import com.owncloud.android.utils.Log_OC;
  70
  71
  72 /**
  73  * This fragment shows a preview of a downloaded media file (audio or video).
  74  *
  75  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  76  *
  77  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  78  *
  79  * @author David A. Velasco
  80  */
  81 public class PreviewMediaFragment extends FileFragment implements
  82         OnTouchListener,
  83         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  84
  85     public static final String EXTRA_FILE = "FILE";
  86     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  87     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  88     private static final String EXTRA_PLAYING = "PLAYING";
  89
  90     private View mView;
  91     private Account mAccount;
  92     private FileDataStorageManager mStorageManager;
  93     private ImageView mImagePreview;
  94     private VideoView mVideoPreview;
  95     private int mSavedPlaybackPosition;
  96
  97     private Handler mHandler;
  98     private RemoteOperation mLastRemoteOperation;
  99
 100     private MediaServiceBinder mMediaServiceBinder = null;
 101     private MediaControlView mMediaController = null;
 102     private MediaServiceConnection mMediaServiceConnection = null;
 103     private VideoHelper mVideoHelper;
 104     private boolean mAutoplay;
 105     public boolean mPrepared;
 106
 107     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 108
 109
 110     /**
 111      * Creates a fragment to preview a file.
 112      *
 113      * When 'fileToDetail' or 'ocAccount' are null
 114      *
 115      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 116      * @param ocAccount         An ownCloud account; needed to start downloads
 117      */
 118     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount, int startPlaybackPosition, boolean autoplay) {
 119         super(fileToDetail);
 120         mAccount = ocAccount;
 121         mSavedPlaybackPosition = startPlaybackPosition;
 122         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 123         mAutoplay = autoplay;
 124     }
 125
 126
 127     /**
 128      *  Creates an empty fragment for previews.
 129      *
 130      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 131      *
 132      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 133      */
 134     public PreviewMediaFragment() {
 135         super();
 136         mAccount = null;
 137         mSavedPlaybackPosition = 0;
 138         mStorageManager = null;
 139         mAutoplay = true;
 140     }
 141
 142
 143     /**
 144      * {@inheritDoc}
 145      */
 146     @Override
 147     public void onCreate(Bundle savedInstanceState) {
 148         super.onCreate(savedInstanceState);
 149         mHandler = new Handler();
 150         setHasOptionsMenu(true);
 151     }
 152
 153
 154     /**
 155      * {@inheritDoc}
 156      */
 157     @Override
 158     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 159             Bundle savedInstanceState) {
 160         super.onCreateView(inflater, container, savedInstanceState);
 161         Log_OC.e(TAG, "onCreateView");
 162
 163
 164         mView = inflater.inflate(R.layout.file_preview, container, false);
 165
 166         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 167         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 168         mVideoPreview.setOnTouchListener(this);
 169
 170         mMediaController = (MediaControlView)mView.findViewById(R.id.media_controller);
 171
 172         return mView;
 173     }
 174
 175
 176     /**
 177      * {@inheritDoc}
 178      */
 179     @Override
 180     public void onAttach(Activity activity) {
 181         super.onAttach(activity);
 182         Log_OC.e(TAG, "onAttach");
 183
 184         if (!(activity instanceof FileFragment.ContainerActivity))
 185             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 186     }
 187
 188
 189     /**
 190      * {@inheritDoc}
 191      */
 192     @Override
 193     public void onActivityCreated(Bundle savedInstanceState) {
 194         super.onActivityCreated(savedInstanceState);
 195         Log_OC.e(TAG, "onActivityCreated");
 196
 197         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 198         if (savedInstanceState != null) {
 199             setFile((OCFile)savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE));
 200             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 201             mSavedPlaybackPosition = savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 202             mAutoplay = savedInstanceState.getBoolean(PreviewMediaFragment.EXTRA_PLAYING);
 203
 204         }
 205         OCFile file = getFile();
 206         if (file == null) {
 207             throw new IllegalStateException("Instanced with a NULL OCFile");
 208         }
 209         if (mAccount == null) {
 210             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 211         }
 212         if (!file.isDown()) {
 213             throw new IllegalStateException("There is no local file to preview");
 214         }
 215         if (file.isVideo()) {
 216             mVideoPreview.setVisibility(View.VISIBLE);
 217             mImagePreview.setVisibility(View.GONE);
 218             prepareVideo();
 219
 220         } else {
 221             mVideoPreview.setVisibility(View.GONE);
 222             mImagePreview.setVisibility(View.VISIBLE);
 223         }
 224
 225     }
 226
 227
 228     /**
 229      * {@inheritDoc}
 230      */
 231     @Override
 232     public void onSaveInstanceState(Bundle outState) {
 233         super.onSaveInstanceState(outState);
 234         Log_OC.e(TAG, "onSaveInstanceState");
 235
 236         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, getFile());
 237         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 238
 239         if (getFile().isVideo()) {
 240             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 241             mAutoplay = mVideoPreview.isPlaying();
 242             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mSavedPlaybackPosition);
 243             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mAutoplay);
 244         } else {
 245             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mMediaServiceBinder.getCurrentPosition());
 246             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mMediaServiceBinder.isPlaying());
 247         }
 248     }
 249
 250
 251     @Override
 252     public void onStart() {
 253         super.onStart();
 254         Log_OC.e(TAG, "onStart");
 255
 256         OCFile file = getFile();
 257         if (file != null) {
 258            if (file.isAudio()) {
 259                bindMediaService();
 260
 261            } else if (file.isVideo()) {
 262                stopAudio();
 263                playVideo();
 264            }
 265         }
 266     }
 267
 268
 269     private void stopAudio() {
 270         Intent i = new Intent(getSherlockActivity(), MediaService.class);
 271         i.setAction(MediaService.ACTION_STOP_ALL);
 272         getSherlockActivity().startService(i);
 273     }
 274
 275
 276     /**
 277      * {@inheritDoc}
 278      */
 279     @Override
 280     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 281         super.onCreateOptionsMenu(menu, inflater);
 282
 283         inflater.inflate(R.menu.file_actions_menu, menu);
 284         List<Integer> toHide = new ArrayList<Integer>();
 285
 286         MenuItem item = null;
 287         toHide.add(R.id.action_cancel_download);
 288         toHide.add(R.id.action_cancel_upload);
 289         toHide.add(R.id.action_download_file);
 290         toHide.add(R.id.action_sync_file);
 291         toHide.add(R.id.action_rename_file);    // by now
 292
 293         // Options shareLink
 294         if (!getFile().isShareByLink()) {
 295             toHide.add(R.id.action_unshare_file);
 296         }
 297
 298         // Send file
 299         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 300         if (!sendEnabled) {
 301             toHide.add(R.id.action_send_file);
 302         }
 303
 304         for (int i : toHide) {
 305             item = menu.findItem(i);
 306             if (item != null) {
 307                 item.setVisible(false);
 308                 item.setEnabled(false);
 309             }
 310         }
 311
 312     }
 313
 314
 315     /**
 316      * {@inheritDoc}
 317      */
 318     @Override
 319     public void onPrepareOptionsMenu(Menu menu) {
 320         super.onPrepareOptionsMenu(menu);
 321
 322         MenuItem item = menu.findItem(R.id.action_unshare_file);
 323         // Options shareLink
 324         if (!getFile().isShareByLink()) {
 325             item.setVisible(false);
 326             item.setEnabled(false);
 327         } else {
 328             item.setVisible(true);
 329             item.setEnabled(true);
 330         }
 331     }
 332
 333
 334     /**
 335      * {@inheritDoc}
 336      */
 337     @Override
 338     public boolean onOptionsItemSelected(MenuItem item) {
 339         switch (item.getItemId()) {
 340             case R.id.action_share_file: {
 341                 shareFileWithLink();
 342                 return true;
 343             }
 344             case R.id.action_unshare_file: {
 345                 unshareFileWithLink();
 346                 return true;
 347             }
 348             case R.id.action_open_file_with: {
 349                 openFile();
 350                 return true;
 351             }
 352             case R.id.action_remove_file: {
 353                 removeFile();
 354                 return true;
 355             }
 356             case R.id.action_see_details: {
 357                 seeDetails();
 358                 return true;
 359             }
 360             case R.id.action_send_file: {
 361                 sendFile();
 362             }
 363
 364             default:
 365                 return false;
 366         }
 367     }
 368
 369
 370
 371     /**
 372      * Update the file of the fragment with file value
 373      * @param file
 374      */
 375     public void updateFile(OCFile file){
 376         setFile(file);
 377     }
 378
 379     private void unshareFileWithLink() {
 380         stopPreview(false);
 381         FileActivity activity = (FileActivity)((FileFragment.ContainerActivity)getActivity());
 382         activity.getFileOperationsHelper().unshareFileWithLink(getFile(), activity);
 383     }
 384
 385     private void shareFileWithLink() {
 386         stopPreview(false);
 387         FileActivity activity = (FileActivity)((FileFragment.ContainerActivity)getActivity());
 388         activity.getFileOperationsHelper().shareFileWithLink(getFile(), activity);
 389
 390     }
 391
 392     private void sendFile() {
 393         stopPreview(false);
 394         FileActivity activity = (FileActivity)((FileFragment.ContainerActivity)getActivity());
 395         activity.getFileOperationsHelper().sendDownloadedFile(getFile(), activity);
 396
 397     }
 398
 399     private void seeDetails() {
 400         stopPreview(false);
 401         ((FileFragment.ContainerActivity)getActivity()).showDetails(getFile());
 402     }
 403
 404
 405     private void prepareVideo() {
 406         // create helper to get more control on the playback
 407         mVideoHelper = new VideoHelper();
 408         mVideoPreview.setOnPreparedListener(mVideoHelper);
 409         mVideoPreview.setOnCompletionListener(mVideoHelper);
 410         mVideoPreview.setOnErrorListener(mVideoHelper);
 411     }
 412
 413     private void playVideo() {
 414         // create and prepare control panel for the user
 415         mMediaController.setMediaPlayer(mVideoPreview);
 416
 417         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 418         mVideoPreview.setVideoPath(getFile().getStoragePath());
 419     }
 420
 421
 422     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 423
 424         /**
 425          * Called when the file is ready to be played.
 426          *
 427          * Just starts the playback.
 428          *
 429          * @param   mp    {@link MediaPlayer} instance performing the playback.
 430          */
 431         @Override
 432         public void onPrepared(MediaPlayer vp) {
 433             Log_OC.e(TAG, "onPrepared");
 434             mVideoPreview.seekTo(mSavedPlaybackPosition);
 435             if (mAutoplay) {
 436                 mVideoPreview.start();
 437             }
 438             mMediaController.setEnabled(true);
 439             mMediaController.updatePausePlay();
 440             mPrepared = true;
 441         }
 442
 443
 444         /**
 445          * Called when the file is finished playing.
 446          *
 447          * Finishes the activity.
 448          *
 449          * @param   mp    {@link MediaPlayer} instance performing the playback.
 450          */
 451         @Override
 452         public void onCompletion(MediaPlayer  mp) {
 453             Log_OC.e(TAG, "completed");
 454             if (mp != null) {
 455                 mVideoPreview.seekTo(0);
 456                 // next lines are necessary to work around undesired video loops
 457                 if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD) {
 458                     mVideoPreview.pause();
 459
 460                 } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD_MR1) {
 461                     // mVideePreview.pause() is not enough
 462
 463                     mMediaController.setEnabled(false);
 464                     mVideoPreview.stopPlayback();
 465                     mAutoplay = false;
 466                     mSavedPlaybackPosition = 0;
 467                     mVideoPreview.setVideoPath(getFile().getStoragePath());
 468                 }
 469             } // else : called from onError()
 470             mMediaController.updatePausePlay();
 471         }
 472
 473
 474         /**
 475          * Called when an error in playback occurs.
 476          *
 477          * @param   mp      {@link MediaPlayer} instance performing the playback.
 478          * @param   what    Type of error
 479          * @param   extra   Extra code specific to the error
 480          */
 481         @Override
 482         public boolean onError(MediaPlayer mp, int what, int extra) {
 483             if (mVideoPreview.getWindowToken() != null) {
 484                 String message = MediaService.getMessageForMediaError(getActivity(), what, extra);
 485                 new AlertDialog.Builder(getActivity())
 486                         .setMessage(message)
 487                         .setPositiveButton(android.R.string.VideoView_error_button,
 488                                 new DialogInterface.OnClickListener() {
 489                                     public void onClick(DialogInterface dialog, int whichButton) {
 490                                         dialog.dismiss();
 491                                         VideoHelper.this.onCompletion(null);
 492                                     }
 493                                 })
 494                         .setCancelable(false)
 495                         .show();
 496             }
 497             return true;
 498         }
 499
 500     }
 501
 502
 503     @Override
 504     public void onPause() {
 505         super.onPause();
 506         Log_OC.e(TAG, "onPause");
 507     }
 508
 509     @Override
 510     public void onResume() {
 511         super.onResume();
 512         Log_OC.e(TAG, "onResume");
 513     }
 514
 515     @Override
 516     public void onDestroy() {
 517         super.onDestroy();
 518         Log_OC.e(TAG, "onDestroy");
 519     }
 520
 521     @Override
 522     public void onStop() {
 523         Log_OC.e(TAG, "onStop");
 524         super.onStop();
 525
 526         mPrepared = false;
 527         if (mMediaServiceConnection != null) {
 528             Log_OC.d(TAG, "Unbinding from MediaService ...");
 529             if (mMediaServiceBinder != null && mMediaController != null) {
 530                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 531             }
 532             getActivity().unbindService(mMediaServiceConnection);
 533             mMediaServiceConnection = null;
 534             mMediaServiceBinder = null;
 535         }
 536     }
 537
 538     @Override
 539     public boolean onTouch(View v, MotionEvent event) {
 540         if (event.getAction() == MotionEvent.ACTION_DOWN && v == mVideoPreview) {
 541             startFullScreenVideo();
 542             return true;
 543         }
 544         return false;
 545     }
 546
 547
 548     private void startFullScreenVideo() {
 549         Intent i = new Intent(getActivity(), PreviewVideoActivity.class);
 550         i.putExtra(FileActivity.EXTRA_ACCOUNT, mAccount);
 551         i.putExtra(FileActivity.EXTRA_FILE, getFile());
 552         i.putExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, mVideoPreview.isPlaying());
 553         mVideoPreview.pause();
 554         i.putExtra(PreviewVideoActivity.EXTRA_START_POSITION, mVideoPreview.getCurrentPosition());
 555         startActivityForResult(i, 0);
 556     }
 557
 558     @Override
 559     public void onConfigurationChanged (Configuration newConfig) {
 560         Log_OC.e(TAG, "onConfigurationChanged " + this);
 561     }
 562
 563     @Override
 564     public void onActivityResult (int requestCode, int resultCode, Intent data) {
 565         Log_OC.e(TAG, "onActivityResult " + this);
 566         super.onActivityResult(requestCode, resultCode, data);
 567         if (resultCode == Activity.RESULT_OK) {
 568             mSavedPlaybackPosition = data.getExtras().getInt(PreviewVideoActivity.EXTRA_START_POSITION);
 569             mAutoplay = data.getExtras().getBoolean(PreviewVideoActivity.EXTRA_AUTOPLAY);
 570         }
 571     }
 572
 573
 574     private void playAudio() {
 575         OCFile file = getFile();
 576         if (!mMediaServiceBinder.isPlaying(file)) {
 577             Log_OC.d(TAG, "starting playback of " + file.getStoragePath());
 578             mMediaServiceBinder.start(mAccount, file, mAutoplay, mSavedPlaybackPosition);
 579
 580         } else {
 581             if (!mMediaServiceBinder.isPlaying() && mAutoplay) {
 582                 mMediaServiceBinder.start();
 583                 mMediaController.updatePausePlay();
 584             }
 585         }
 586     }
 587
 588
 589     private void bindMediaService() {
 590         Log_OC.d(TAG, "Binding to MediaService...");
 591         if (mMediaServiceConnection == null) {
 592             mMediaServiceConnection = new MediaServiceConnection();
 593         }
 594         getActivity().bindService(  new Intent(getActivity(),
 595                                     MediaService.class),
 596                                     mMediaServiceConnection,
 597                                     Context.BIND_AUTO_CREATE);
 598             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 599     }
 600
 601     /** Defines callbacks for service binding, passed to bindService() */
 602     private class MediaServiceConnection implements ServiceConnection {
 603
 604         @Override
 605         public void onServiceConnected(ComponentName component, IBinder service) {
 606             if (getActivity() != null) {
 607                 if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 608                     Log_OC.d(TAG, "Media service connected");
 609                     mMediaServiceBinder = (MediaServiceBinder) service;
 610                     if (mMediaServiceBinder != null) {
 611                         prepareMediaController();
 612                         playAudio();    // do not wait for the touch of nobody to play audio
 613
 614                         Log_OC.d(TAG, "Successfully bound to MediaService, MediaController ready");
 615
 616                     } else {
 617                         Log_OC.e(TAG, "Unexpected response from MediaService while binding");
 618                     }
 619                 }
 620             }
 621         }
 622
 623         private void prepareMediaController() {
 624             mMediaServiceBinder.registerMediaController(mMediaController);
 625             if (mMediaController != null) {
 626                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 627                 mMediaController.setEnabled(true);
 628                 mMediaController.updatePausePlay();
 629             }
 630         }
 631
 632         @Override
 633         public void onServiceDisconnected(ComponentName component) {
 634             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 635                 Log_OC.e(TAG, "Media service suddenly disconnected");
 636                 if (mMediaController != null) {
 637                     mMediaController.setMediaPlayer(null);
 638                 } else {
 639                     Toast.makeText(getActivity(), "No media controller to release when disconnected from media service", Toast.LENGTH_SHORT).show();
 640                 }
 641                 mMediaServiceBinder = null;
 642                 mMediaServiceConnection = null;
 643             }
 644         }
 645     }
 646
 647
 648
 649     /**
 650      * Opens the previewed file with an external application.
 651      *
 652      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 653      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 654      * available apps for the MIME type known from the file extension, to let the user choose
 655      */
 656     private void openFile() {
 657         OCFile file = getFile();
 658         stopPreview(true);
 659         String storagePath = file.getStoragePath();
 660         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 661         try {
 662             Intent i = new Intent(Intent.ACTION_VIEW);
 663             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 664             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 665             startActivity(i);
 666
 667         } catch (Throwable t) {
 668             Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + file.getMimetype());
 669             boolean toastIt = true;
 670             String mimeType = "";
 671             try {
 672                 Intent i = new Intent(Intent.ACTION_VIEW);
 673                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 674                 if (mimeType == null || !mimeType.equals(file.getMimetype())) {
 675                     if (mimeType != null) {
 676                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 677                     } else {
 678                         // desperate try
 679                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 680                     }
 681                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 682                     startActivity(i);
 683                     toastIt = false;
 684                 }
 685
 686             } catch (IndexOutOfBoundsException e) {
 687                 Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 688
 689             } catch (ActivityNotFoundException e) {
 690                 Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 691
 692             } catch (Throwable th) {
 693                 Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 694
 695             } finally {
 696                 if (toastIt) {
 697                     Toast.makeText(getActivity(), "There is no application to handle file " + file.getFileName(), Toast.LENGTH_SHORT).show();
 698                 }
 699             }
 700
 701         }
 702         finish();
 703     }
 704
 705     /**
 706      * Starts a the removal of the previewed file.
 707      *
 708      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 709      * depending upon the user selection in the dialog.
 710      */
 711     private void removeFile() {
 712         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 713                 R.string.confirmation_remove_alert,
 714                 new String[]{getFile().getFileName()},
 715                 R.string.confirmation_remove_remote_and_local,
 716                 R.string.confirmation_remove_local,
 717                 R.string.common_cancel);
 718         confDialog.setOnConfirmationListener(this);
 719         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 720     }
 721
 722
 723     /**
 724      * Performs the removal of the previewed file, both locally and in the server.
 725      */
 726     @Override
 727     public void onConfirmation(String callerTag) {
 728         OCFile file = getFile();
 729         if (mStorageManager.getFileById(file.getFileId()) != null) {   // check that the file is still there;
 730             stopPreview(true);
 731             mLastRemoteOperation = new RemoveFileOperation( file,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 732                                                             true,
 733                                                             mStorageManager);
 734             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 735
 736             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 737         }
 738     }
 739
 740
 741     /**
 742      * Removes the file from local storage
 743      */
 744     @Override
 745     public void onNeutral(String callerTag) {
 746         OCFile file = getFile();
 747         stopPreview(true);
 748         mStorageManager.removeFile(file, false, true);    // TODO perform in background task / new thread
 749         finish();
 750     }
 751
 752     /**
 753      * User cancelled the removal action.
 754      */
 755     @Override
 756     public void onCancel(String callerTag) {
 757         // nothing to do here
 758     }
 759
 760
 761     /**
 762      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 763      *
 764      * @param file      File to test if can be previewed.
 765      * @return          'True' if the file can be handled by the fragment.
 766      */
 767     public static boolean canBePreviewed(OCFile file) {
 768         return (file != null && (file.isAudio() || file.isVideo()));
 769     }
 770
 771     /**
 772      * {@inheritDoc}
 773      */
 774     @Override
 775     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 776         if (operation.equals(mLastRemoteOperation)) {
 777             if (operation instanceof RemoveFileOperation) {
 778                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 779             }
 780         }
 781     }
 782
 783     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 784         ((FileDisplayActivity) getActivity()).dismissLoadingDialog();
 785         if (result.isSuccess()) {
 786             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 787             msg.show();
 788             finish();
 789
 790         } else {
 791             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 792             msg.show();
 793             if (result.isSslRecoverableException()) {
 794                 // TODO show the SSL warning dialog
 795             }
 796         }
 797     }
 798
 799     private void stopPreview(boolean stopAudio) {
 800         OCFile file = getFile();
 801         if (file.isAudio() && stopAudio) {
 802             mMediaServiceBinder.pause();
 803
 804         } else if (file.isVideo()) {
 805             mVideoPreview.stopPlayback();
 806         }
 807     }
 808
 809
 810
 811     /**
 812      * Finishes the preview
 813      */
 814     private void finish() {
 815         getActivity().onBackPressed();
 816     }
 817
 818
 819     public int getPosition() {
 820         if (mPrepared) {
 821             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 822         }
 823         Log_OC.e(TAG, "getting position: " + mSavedPlaybackPosition);
 824         return mSavedPlaybackPosition;
 825     }
 826
 827     public boolean isPlaying() {
 828         if (mPrepared) {
 829             mAutoplay = mVideoPreview.isPlaying();
 830         }
 831         return mAutoplay;
 832     }
 833
 834 }