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 as published by
   6  *   the Free Software Foundation, either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18 package com.owncloud.android.ui.preview;
  19
  20 import java.io.File;
  21 import java.util.ArrayList;
  22 import java.util.List;
  23
  24 import android.accounts.Account;
  25 import android.app.Activity;
  26 import android.app.AlertDialog;
  27 import android.content.ActivityNotFoundException;
  28 import android.content.ComponentName;
  29 import android.content.Context;
  30 import android.content.DialogInterface;
  31 import android.content.Intent;
  32 import android.content.ServiceConnection;
  33 import android.media.MediaPlayer;
  34 import android.media.MediaPlayer.OnCompletionListener;
  35 import android.media.MediaPlayer.OnErrorListener;
  36 import android.media.MediaPlayer.OnPreparedListener;
  37 import android.net.Uri;
  38 import android.os.Bundle;
  39 import android.os.Handler;
  40 import android.os.IBinder;
  41 import android.support.v4.app.FragmentTransaction;
  42 import android.util.Log;
  43 import android.view.LayoutInflater;
  44 import android.view.MotionEvent;
  45 import android.view.View;
  46 import android.view.View.OnTouchListener;
  47 import android.view.ViewGroup;
  48 import android.webkit.MimeTypeMap;
  49 import android.widget.ImageView;
  50 import android.widget.Toast;
  51 import android.widget.VideoView;
  52
  53 import com.actionbarsherlock.app.SherlockFragment;
  54 import com.actionbarsherlock.view.Menu;
  55 import com.actionbarsherlock.view.MenuInflater;
  56 import com.actionbarsherlock.view.MenuItem;
  57 import com.owncloud.android.datamodel.FileDataStorageManager;
  58 import com.owncloud.android.datamodel.OCFile;
  59 import com.owncloud.android.media.MediaControlView;
  60 import com.owncloud.android.media.MediaService;
  61 import com.owncloud.android.media.MediaServiceBinder;
  62 import com.owncloud.android.network.OwnCloudClientUtils;
  63 import com.owncloud.android.operations.OnRemoteOperationListener;
  64 import com.owncloud.android.operations.RemoteOperation;
  65 import com.owncloud.android.operations.RemoteOperationResult;
  66 import com.owncloud.android.operations.RemoveFileOperation;
  67 import com.owncloud.android.ui.activity.FileDetailActivity;
  68 import com.owncloud.android.ui.activity.FileDisplayActivity;
  69 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  70 import com.owncloud.android.ui.fragment.FileDetailFragment;
  71 import com.owncloud.android.ui.fragment.FileFragment;
  72
  73 import com.owncloud.android.R;
  74 import eu.alefzero.webdav.WebdavClient;
  75 import eu.alefzero.webdav.WebdavUtils;
  76
  77 /**
  78  * This fragment shows a preview of a downloaded media file (audio or video).
  79  *
  80  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  81  *
  82  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  83  *
  84  * @author David A. Velasco
  85  */
  86 public class PreviewMediaFragment extends SherlockFragment implements
  87         OnTouchListener , FileFragment,
  88         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  89
  90     public static final String EXTRA_FILE = "FILE";
  91     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  92     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  93
  94     private View mView;
  95     private OCFile mFile;
  96     private Account mAccount;
  97     private FileDataStorageManager mStorageManager;
  98     private ImageView mImagePreview;
  99     private VideoView mVideoPreview;
 100     private int mSavedPlaybackPosition;
 101
 102     private Handler mHandler;
 103     private RemoteOperation mLastRemoteOperation;
 104
 105     private MediaServiceBinder mMediaServiceBinder = null;
 106     private MediaControlView mMediaController = null;
 107     private MediaServiceConnection mMediaServiceConnection = null;
 108     private VideoHelper mVideoHelper;
 109
 110     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 111
 112
 113     /**
 114      * Creates a fragment to preview a file.
 115      *
 116      * When 'fileToDetail' or 'ocAccount' are null
 117      *
 118      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 119      * @param ocAccount         An ownCloud account; needed to start downloads
 120      */
 121     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount) {
 122         mFile = fileToDetail;
 123         mAccount = ocAccount;
 124         mSavedPlaybackPosition = 0;
 125         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 126     }
 127
 128
 129     /**
 130      *  Creates an empty fragment for previews.
 131      *
 132      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 133      *
 134      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 135      */
 136     public PreviewMediaFragment() {
 137         mFile = null;
 138         mAccount = null;
 139         mSavedPlaybackPosition = 0;
 140         mStorageManager = null;
 141     }
 142
 143
 144     /**
 145      * {@inheritDoc}
 146      */
 147     @Override
 148     public void onCreate(Bundle savedInstanceState) {
 149         super.onCreate(savedInstanceState);
 150         mHandler = new Handler();
 151         setHasOptionsMenu(true);
 152     }
 153
 154
 155     /**
 156      * {@inheritDoc}
 157      */
 158     @Override
 159     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 160             Bundle savedInstanceState) {
 161         super.onCreateView(inflater, container, savedInstanceState);
 162
 163         mView = inflater.inflate(R.layout.file_preview, container, false);
 164
 165         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 166         mImagePreview.setOnTouchListener(this);
 167         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 168
 169         mMediaController = (MediaControlView)mView.findViewById(R.id.media_controller);
 170
 171         return mView;
 172     }
 173
 174
 175     /**
 176      * {@inheritDoc}
 177      */
 178     @Override
 179     public void onAttach(Activity activity) {
 180         super.onAttach(activity);
 181         if (!(activity instanceof FileFragment.ContainerActivity))
 182             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 183     }
 184
 185
 186     /**
 187      * {@inheritDoc}
 188      */
 189     @Override
 190     public void onActivityCreated(Bundle savedInstanceState) {
 191         super.onActivityCreated(savedInstanceState);
 192
 193         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 194         if (savedInstanceState != null) {
 195             mFile = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE);
 196             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 197             mSavedPlaybackPosition = savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 198
 199         }
 200         if (mFile == null) {
 201             throw new IllegalStateException("Instanced with a NULL OCFile");
 202         }
 203         if (mAccount == null) {
 204             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 205         }
 206         if (!mFile.isDown()) {
 207             throw new IllegalStateException("There is no local file to preview");
 208         }
 209         if (mFile.isVideo()) {
 210             mVideoPreview.setVisibility(View.VISIBLE);
 211             mImagePreview.setVisibility(View.GONE);
 212             prepareVideo();
 213
 214         } else {
 215             mVideoPreview.setVisibility(View.GONE);
 216             mImagePreview.setVisibility(View.VISIBLE);
 217         }
 218
 219     }
 220
 221
 222     /**
 223      * {@inheritDoc}
 224      */
 225     @Override
 226     public void onSaveInstanceState(Bundle outState) {
 227         super.onSaveInstanceState(outState);
 228
 229         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, mFile);
 230         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 231
 232         if (mVideoPreview.isPlaying()) {
 233             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mVideoPreview.getCurrentPosition());
 234         }
 235     }
 236
 237
 238     @Override
 239     public void onStart() {
 240         super.onStart();
 241
 242         if (mFile != null) {
 243            if (mFile.isAudio()) {
 244                bindMediaService();
 245
 246            } else if (mFile.isVideo()) {
 247                stopAudio();
 248                playVideo();
 249            }
 250         }
 251     }
 252
 253
 254     private void stopAudio() {
 255         Intent i = new Intent(getSherlockActivity(), MediaService.class);
 256         i.setAction(MediaService.ACTION_STOP_ALL);
 257         getSherlockActivity().startService(i);
 258     }
 259
 260
 261     /**
 262      * {@inheritDoc}
 263      */
 264     @Override
 265     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 266         super.onCreateOptionsMenu(menu, inflater);
 267
 268         inflater.inflate(R.menu.file_actions_menu, menu);
 269         List<Integer> toHide = new ArrayList<Integer>();
 270
 271         MenuItem item = null;
 272         toHide.add(R.id.action_cancel_download);
 273         toHide.add(R.id.action_cancel_upload);
 274         toHide.add(R.id.action_download_file);
 275         toHide.add(R.id.action_rename_file);    // by now
 276
 277         for (int i : toHide) {
 278             item = menu.findItem(i);
 279             if (item != null) {
 280                 item.setVisible(false);
 281                 item.setEnabled(false);
 282             }
 283         }
 284
 285     }
 286
 287
 288     /**
 289      * {@inheritDoc}
 290      */
 291     @Override
 292     public boolean onOptionsItemSelected(MenuItem item) {
 293         switch (item.getItemId()) {
 294             case R.id.action_open_file_with: {
 295                 openFile();
 296                 return true;
 297             }
 298             case R.id.action_remove_file: {
 299                 removeFile();
 300                 return true;
 301             }
 302             case R.id.action_see_details: {
 303                 seeDetails();
 304                 return true;
 305             }
 306
 307             default:
 308                 return false;
 309         }
 310     }
 311
 312
 313     private void seeDetails() {
 314         stopPreview(false);
 315         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 316     }
 317
 318
 319     private void prepareVideo() {
 320         // create helper to get more control on the playback
 321         mVideoHelper = new VideoHelper();
 322         mVideoPreview.setOnPreparedListener(mVideoHelper);
 323         mVideoPreview.setOnCompletionListener(mVideoHelper);
 324         mVideoPreview.setOnErrorListener(mVideoHelper);
 325     }
 326
 327     private void playVideo() {
 328         // create and prepare control panel for the user
 329         mMediaController.setMediaPlayer(mVideoPreview);
 330
 331         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 332         mVideoPreview.setVideoPath(mFile.getStoragePath());
 333     }
 334
 335
 336     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 337
 338         /**
 339          * Called when the file is ready to be played.
 340          *
 341          * Just starts the playback.
 342          *
 343          * @param   mp    {@link MediaPlayer} instance performing the playback.
 344          */
 345         @Override
 346         public void onPrepared(MediaPlayer vp) {
 347             mVideoPreview.seekTo(mSavedPlaybackPosition);
 348             mVideoPreview.start();
 349             mMediaController.setEnabled(true);
 350             mMediaController.updatePausePlay();
 351         }
 352
 353
 354         /**
 355          * Called when the file is finished playing.
 356          *
 357          * Finishes the activity.
 358          *
 359          * @param   mp    {@link MediaPlayer} instance performing the playback.
 360          */
 361         @Override
 362         public void onCompletion(MediaPlayer  mp) {
 363             // nothing, right now
 364         }
 365
 366
 367         /**
 368          * Called when an error in playback occurs.
 369          *
 370          * @param   mp      {@link MediaPlayer} instance performing the playback.
 371          * @param   what    Type of error
 372          * @param   extra   Extra code specific to the error
 373          */
 374         @Override
 375         public boolean onError(MediaPlayer mp, int what, int extra) {
 376             Log.e(TAG, "Error in video playback, what = " + what + ", extra = " + extra);
 377
 378             if (mVideoPreview.getWindowToken() != null) {
 379                 String message = MediaService.getMessageForMediaError(getActivity(), what, extra);
 380                 new AlertDialog.Builder(getActivity())
 381                         .setMessage(message)
 382                         .setPositiveButton(android.R.string.VideoView_error_button,
 383                                 new DialogInterface.OnClickListener() {
 384                                     public void onClick(DialogInterface dialog, int whichButton) {
 385                                         dialog.dismiss();
 386                                         VideoHelper.this.onCompletion(null);
 387                                     }
 388                                 })
 389                         .setCancelable(false)
 390                         .show();
 391             }
 392             return true;
 393         }
 394
 395     }
 396
 397
 398     @Override
 399     public void onResume() {
 400         super.onResume();
 401     }
 402
 403
 404     @Override
 405     public void onPause() {
 406         super.onPause();
 407     }
 408
 409
 410     @Override
 411     public void onStop() {
 412         super.onStop();
 413         if (mMediaServiceConnection != null) {
 414             Log.d(TAG, "Unbinding from MediaService ...");
 415             if (mMediaServiceBinder != null && mMediaController != null) {
 416                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 417             }
 418             getActivity().unbindService(mMediaServiceConnection);
 419             mMediaServiceConnection = null;
 420             mMediaServiceBinder = null;
 421         }
 422     }
 423
 424     @Override
 425     public void onDestroy() {
 426         super.onDestroy();
 427     }
 428
 429
 430     @Override
 431     public boolean onTouch(View v, MotionEvent event) {
 432         if (event.getAction() == MotionEvent.ACTION_DOWN) {
 433             if (v == mImagePreview &&
 434                     mMediaServiceBinder != null && mFile.isAudio() && mMediaServiceBinder.isPlaying(mFile)) {
 435                 toggleMediaController(MediaService.MEDIA_CONTROL_PERMANENT);
 436                 return true;
 437
 438             } else if (v == mVideoPreview) {
 439                 toggleMediaController(MediaService.MEDIA_CONTROL_SHORT_LIFE);
 440                 return true;
 441             }
 442         }
 443         return false;
 444     }
 445
 446
 447     private void toggleMediaController(int time) {
 448         /*
 449         if (mMediaController.isShowing()) {
 450             mMediaController.hide();
 451         } else {
 452             mMediaController.show(time);
 453         }
 454         */
 455     }
 456
 457
 458     private void playAudio() {
 459         if (!mMediaServiceBinder.isPlaying(mFile)) {
 460             Log.d(TAG, "starting playback of " + mFile.getStoragePath());
 461             mMediaServiceBinder.start(mAccount, mFile);
 462
 463         } else {
 464             if (!mMediaServiceBinder.isPlaying()) {
 465                 mMediaServiceBinder.start();
 466                 mMediaController.updatePausePlay();
 467             }
 468         }
 469     }
 470
 471
 472     private void bindMediaService() {
 473         Log.d(TAG, "Binding to MediaService...");
 474         if (mMediaServiceConnection == null) {
 475             mMediaServiceConnection = new MediaServiceConnection();
 476         }
 477         getActivity().bindService(  new Intent(getActivity(),
 478                                     MediaService.class),
 479                                     mMediaServiceConnection,
 480                                     Context.BIND_AUTO_CREATE);
 481             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 482     }
 483
 484     /** Defines callbacks for service binding, passed to bindService() */
 485     private class MediaServiceConnection implements ServiceConnection {
 486
 487         @Override
 488         public void onServiceConnected(ComponentName component, IBinder service) {
 489             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 490                 Log.d(TAG, "Media service connected");
 491                 mMediaServiceBinder = (MediaServiceBinder) service;
 492                 if (mMediaServiceBinder != null) {
 493                     prepareMediaController();
 494                     playAudio();    // do not wait for the touch of nobody to play audio
 495
 496                     Log.d(TAG, "Successfully bound to MediaService, MediaController ready");
 497
 498                 } else {
 499                     Log.e(TAG, "Unexpected response from MediaService while binding");
 500                 }
 501             }
 502         }
 503
 504         private void prepareMediaController() {
 505             mMediaServiceBinder.registerMediaController(mMediaController);
 506             if (mMediaController != null) {
 507                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 508                 mMediaController.setEnabled(true);
 509                 mMediaController.updatePausePlay();
 510             }
 511         }
 512
 513         @Override
 514         public void onServiceDisconnected(ComponentName component) {
 515             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 516                 Log.e(TAG, "Media service suddenly disconnected");
 517                 if (mMediaController != null) {
 518                     mMediaController.setMediaPlayer(null);
 519                 } else {
 520                     Toast.makeText(getActivity(), "No media controller to release when disconnected from media service", Toast.LENGTH_SHORT).show();
 521                 }
 522                 mMediaServiceBinder = null;
 523                 mMediaServiceConnection = null;
 524             }
 525         }
 526     }
 527
 528
 529
 530     /**
 531      * Opens the previewed file with an external application.
 532      *
 533      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 534      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 535      * available apps for the MIME type known from the file extension, to let the user choose
 536      */
 537     private void openFile() {
 538         stopPreview(true);
 539         String storagePath = mFile.getStoragePath();
 540         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 541         try {
 542             Intent i = new Intent(Intent.ACTION_VIEW);
 543             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 544             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 545             startActivity(i);
 546
 547         } catch (Throwable t) {
 548             Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 549             boolean toastIt = true;
 550             String mimeType = "";
 551             try {
 552                 Intent i = new Intent(Intent.ACTION_VIEW);
 553                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 554                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 555                     if (mimeType != null) {
 556                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 557                     } else {
 558                         // desperate try
 559                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 560                     }
 561                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 562                     startActivity(i);
 563                     toastIt = false;
 564                 }
 565
 566             } catch (IndexOutOfBoundsException e) {
 567                 Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 568
 569             } catch (ActivityNotFoundException e) {
 570                 Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 571
 572             } catch (Throwable th) {
 573                 Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 574
 575             } finally {
 576                 if (toastIt) {
 577                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 578                 }
 579             }
 580
 581         }
 582         finish();
 583     }
 584
 585     /**
 586      * Starts a the removal of the previewed file.
 587      *
 588      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 589      * depending upon the user selection in the dialog.
 590      */
 591     private void removeFile() {
 592         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 593                 R.string.confirmation_remove_alert,
 594                 new String[]{mFile.getFileName()},
 595                 R.string.confirmation_remove_remote_and_local,
 596                 R.string.confirmation_remove_local,
 597                 R.string.common_cancel);
 598         confDialog.setOnConfirmationListener(this);
 599         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 600     }
 601
 602
 603     /**
 604      * Performs the removal of the previewed file, both locally and in the server.
 605      */
 606     @Override
 607     public void onConfirmation(String callerTag) {
 608         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 609             stopPreview(true);
 610             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 611                                                             true,
 612                                                             mStorageManager);
 613             WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
 614             mLastRemoteOperation.execute(wc, this, mHandler);
 615
 616             boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 617             getActivity().showDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 618         }
 619     }
 620
 621
 622     /**
 623      * Removes the file from local storage
 624      */
 625     @Override
 626     public void onNeutral(String callerTag) {
 627         // TODO this code should be made in a secondary thread,
 628         if (mFile.isDown()) {   // checks it is still there
 629             stopPreview(true);
 630             File f = new File(mFile.getStoragePath());
 631             f.delete();
 632             mFile.setStoragePath(null);
 633             mStorageManager.saveFile(mFile);
 634             finish();
 635         }
 636     }
 637
 638     /**
 639      * User cancelled the removal action.
 640      */
 641     @Override
 642     public void onCancel(String callerTag) {
 643         // nothing to do here
 644     }
 645
 646
 647     /**
 648      * {@inheritDoc}
 649      */
 650     public OCFile getFile(){
 651         return mFile;
 652     }
 653
 654     /*
 655     /**
 656      * Use this method to signal this Activity that it shall update its view.
 657      *
 658      * @param file : An {@link OCFile}
 659      *-/
 660     public void updateFileDetails(OCFile file, Account ocAccount) {
 661         mFile = file;
 662         if (ocAccount != null && (
 663                 mStorageManager == null ||
 664                 (mAccount != null && !mAccount.equals(ocAccount))
 665            )) {
 666             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 667         }
 668         mAccount = ocAccount;
 669         updateFileDetails(false);
 670     }
 671     */
 672
 673
 674     /**
 675      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 676      *
 677      * @param file      File to test if can be previewed.
 678      * @return          'True' if the file can be handled by the fragment.
 679      */
 680     public static boolean canBePreviewed(OCFile file) {
 681         return (file != null && (file.isAudio() || file.isVideo()));
 682     }
 683
 684     /**
 685      * {@inheritDoc}
 686      */
 687     @Override
 688     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 689         if (operation.equals(mLastRemoteOperation)) {
 690             if (operation instanceof RemoveFileOperation) {
 691                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 692             }
 693         }
 694     }
 695
 696     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 697         boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 698         getActivity().dismissDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 699
 700         if (result.isSuccess()) {
 701             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 702             msg.show();
 703             finish();
 704
 705         } else {
 706             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 707             msg.show();
 708             if (result.isSslRecoverableException()) {
 709                 // TODO show the SSL warning dialog
 710             }
 711         }
 712     }
 713
 714     private void stopPreview(boolean stopAudio) {
 715         if (mFile.isAudio() && stopAudio) {
 716             mMediaServiceBinder.pause();
 717
 718         } else if (mFile.isVideo()) {
 719             mVideoPreview.stopPlayback();
 720         }
 721     }
 722
 723
 724
 725     /**
 726      * Finishes the preview
 727      */
 728     private void finish() {
 729         Activity container = getActivity();
 730         if (container instanceof FileDisplayActivity) {
 731             // double pane
 732             FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 733             transaction.replace(R.id.file_details_container, new FileDetailFragment(null, null), FileDetailFragment.FTAG); // empty FileDetailFragment
 734             transaction.commit();
 735             ((FileFragment.ContainerActivity)container).onFileStateChanged();
 736         } else {
 737             container.finish();
 738         }
 739     }
 740
 741 }