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.Build;
  39 import android.os.Bundle;
  40 import android.os.Handler;
  41 import android.os.IBinder;
  42 import android.support.v4.app.FragmentTransaction;
  43 import android.util.Log;
  44 import android.view.LayoutInflater;
  45 import android.view.MotionEvent;
  46 import android.view.View;
  47 import android.view.View.OnTouchListener;
  48 import android.view.ViewGroup;
  49 import android.webkit.MimeTypeMap;
  50 import android.widget.ImageView;
  51 import android.widget.Toast;
  52 import android.widget.VideoView;
  53
  54 import com.actionbarsherlock.app.SherlockFragment;
  55 import com.actionbarsherlock.view.Menu;
  56 import com.actionbarsherlock.view.MenuInflater;
  57 import com.actionbarsherlock.view.MenuItem;
  58 import com.owncloud.android.datamodel.FileDataStorageManager;
  59 import com.owncloud.android.datamodel.OCFile;
  60 import com.owncloud.android.media.MediaControlView;
  61 import com.owncloud.android.media.MediaService;
  62 import com.owncloud.android.media.MediaServiceBinder;
  63 import com.owncloud.android.network.OwnCloudClientUtils;
  64 import com.owncloud.android.operations.OnRemoteOperationListener;
  65 import com.owncloud.android.operations.RemoteOperation;
  66 import com.owncloud.android.operations.RemoteOperationResult;
  67 import com.owncloud.android.operations.RemoveFileOperation;
  68 import com.owncloud.android.ui.activity.FileDetailActivity;
  69 import com.owncloud.android.ui.activity.FileDisplayActivity;
  70 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  71 import com.owncloud.android.ui.fragment.FileDetailFragment;
  72 import com.owncloud.android.ui.fragment.FileFragment;
  73
  74 import com.owncloud.android.R;
  75 import eu.alefzero.webdav.WebdavClient;
  76 import eu.alefzero.webdav.WebdavUtils;
  77
  78 /**
  79  * This fragment shows a preview of a downloaded media file (audio or video).
  80  *
  81  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  82  *
  83  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  84  *
  85  * @author David A. Velasco
  86  */
  87 public class PreviewMediaFragment extends SherlockFragment implements
  88         OnTouchListener , FileFragment,
  89         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  90
  91     public static final String EXTRA_FILE = "FILE";
  92     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  93     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  94     private static final String EXTRA_PLAYING = "PLAYING";
  95
  96     private View mView;
  97     private OCFile mFile;
  98     private Account mAccount;
  99     private FileDataStorageManager mStorageManager;
 100     private ImageView mImagePreview;
 101     private VideoView mVideoPreview;
 102     private int mSavedPlaybackPosition;
 103
 104     private Handler mHandler;
 105     private RemoteOperation mLastRemoteOperation;
 106
 107     private MediaServiceBinder mMediaServiceBinder = null;
 108     private MediaControlView mMediaController = null;
 109     private MediaServiceConnection mMediaServiceConnection = null;
 110     private VideoHelper mVideoHelper;
 111     private boolean mAutoplay;
 112
 113     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 114
 115
 116     /**
 117      * Creates a fragment to preview a file.
 118      *
 119      * When 'fileToDetail' or 'ocAccount' are null
 120      *
 121      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 122      * @param ocAccount         An ownCloud account; needed to start downloads
 123      */
 124     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount) {
 125         mFile = fileToDetail;
 126         mAccount = ocAccount;
 127         mSavedPlaybackPosition = 0;
 128         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 129         mAutoplay = true;
 130     }
 131
 132
 133     /**
 134      *  Creates an empty fragment for previews.
 135      *
 136      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 137      *
 138      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 139      */
 140     public PreviewMediaFragment() {
 141         mFile = null;
 142         mAccount = null;
 143         mSavedPlaybackPosition = 0;
 144         mStorageManager = null;
 145         mAutoplay = true;
 146     }
 147
 148
 149     /**
 150      * {@inheritDoc}
 151      */
 152     @Override
 153     public void onCreate(Bundle savedInstanceState) {
 154         super.onCreate(savedInstanceState);
 155         mHandler = new Handler();
 156         setHasOptionsMenu(true);
 157     }
 158
 159
 160     /**
 161      * {@inheritDoc}
 162      */
 163     @Override
 164     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 165             Bundle savedInstanceState) {
 166         super.onCreateView(inflater, container, savedInstanceState);
 167
 168         mView = inflater.inflate(R.layout.file_preview, container, false);
 169
 170         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 171         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 172         mVideoPreview.setOnTouchListener(this);
 173
 174         mMediaController = (MediaControlView)mView.findViewById(R.id.media_controller);
 175
 176         return mView;
 177     }
 178
 179
 180     /**
 181      * {@inheritDoc}
 182      */
 183     @Override
 184     public void onAttach(Activity activity) {
 185         super.onAttach(activity);
 186         if (!(activity instanceof FileFragment.ContainerActivity))
 187             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 188     }
 189
 190
 191     /**
 192      * {@inheritDoc}
 193      */
 194     @Override
 195     public void onActivityCreated(Bundle savedInstanceState) {
 196         super.onActivityCreated(savedInstanceState);
 197
 198         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 199         if (savedInstanceState != null) {
 200             mFile = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE);
 201             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 202             mSavedPlaybackPosition = savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 203             mAutoplay = savedInstanceState.getBoolean(PreviewMediaFragment.EXTRA_PLAYING);
 204
 205         }
 206         if (mFile == 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 (!mFile.isDown()) {
 213             throw new IllegalStateException("There is no local file to preview");
 214         }
 215         if (mFile.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         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, mFile);
 235         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 236
 237         if (mFile.isVideo()) {
 238             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mVideoPreview.getCurrentPosition());
 239             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mVideoPreview.isPlaying());
 240         } else {
 241             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mMediaServiceBinder.getCurrentPosition());
 242             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mMediaServiceBinder.isPlaying());
 243         }
 244     }
 245
 246
 247     @Override
 248     public void onStart() {
 249         super.onStart();
 250
 251         if (mFile != null) {
 252            if (mFile.isAudio()) {
 253                bindMediaService();
 254
 255            } else if (mFile.isVideo()) {
 256                stopAudio();
 257                playVideo();
 258            }
 259         }
 260     }
 261
 262
 263     private void stopAudio() {
 264         Intent i = new Intent(getSherlockActivity(), MediaService.class);
 265         i.setAction(MediaService.ACTION_STOP_ALL);
 266         getSherlockActivity().startService(i);
 267     }
 268
 269
 270     /**
 271      * {@inheritDoc}
 272      */
 273     @Override
 274     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 275         super.onCreateOptionsMenu(menu, inflater);
 276
 277         inflater.inflate(R.menu.file_actions_menu, menu);
 278         List<Integer> toHide = new ArrayList<Integer>();
 279
 280         MenuItem item = null;
 281         toHide.add(R.id.action_cancel_download);
 282         toHide.add(R.id.action_cancel_upload);
 283         toHide.add(R.id.action_download_file);
 284         toHide.add(R.id.action_rename_file);    // by now
 285
 286         for (int i : toHide) {
 287             item = menu.findItem(i);
 288             if (item != null) {
 289                 item.setVisible(false);
 290                 item.setEnabled(false);
 291             }
 292         }
 293
 294     }
 295
 296
 297     /**
 298      * {@inheritDoc}
 299      */
 300     @Override
 301     public boolean onOptionsItemSelected(MenuItem item) {
 302         switch (item.getItemId()) {
 303             case R.id.action_open_file_with: {
 304                 openFile();
 305                 return true;
 306             }
 307             case R.id.action_remove_file: {
 308                 removeFile();
 309                 return true;
 310             }
 311             case R.id.action_see_details: {
 312                 seeDetails();
 313                 return true;
 314             }
 315
 316             default:
 317                 return false;
 318         }
 319     }
 320
 321
 322     private void seeDetails() {
 323         stopPreview(false);
 324         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 325     }
 326
 327
 328     private void prepareVideo() {
 329         // create helper to get more control on the playback
 330         mVideoHelper = new VideoHelper();
 331         mVideoPreview.setOnPreparedListener(mVideoHelper);
 332         mVideoPreview.setOnCompletionListener(mVideoHelper);
 333         mVideoPreview.setOnErrorListener(mVideoHelper);
 334     }
 335
 336     private void playVideo() {
 337         // create and prepare control panel for the user
 338         mMediaController.setMediaPlayer(mVideoPreview);
 339
 340         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 341         mVideoPreview.setVideoPath(mFile.getStoragePath());
 342     }
 343
 344
 345     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 346
 347         /**
 348          * Called when the file is ready to be played.
 349          *
 350          * Just starts the playback.
 351          *
 352          * @param   mp    {@link MediaPlayer} instance performing the playback.
 353          */
 354         @Override
 355         public void onPrepared(MediaPlayer vp) {
 356             Log.e(TAG, "onPrepared");
 357             mVideoPreview.seekTo(mSavedPlaybackPosition);
 358             if (mAutoplay) {
 359                 mVideoPreview.start();
 360             }
 361             mMediaController.setEnabled(true);
 362             mMediaController.updatePausePlay();
 363         }
 364
 365
 366         /**
 367          * Called when the file is finished playing.
 368          *
 369          * Finishes the activity.
 370          *
 371          * @param   mp    {@link MediaPlayer} instance performing the playback.
 372          */
 373         @Override
 374         public void onCompletion(MediaPlayer  mp) {
 375             Log.e(TAG, "completed");
 376             if (mp != null) {
 377                 mVideoPreview.seekTo(0);
 378                 // next lines are necessary to work around undesired video loops
 379                 if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD) {
 380                     mVideoPreview.pause();
 381
 382                 } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD_MR1) {
 383                     // mVideePreview.pause() is not enough
 384
 385                     mMediaController.setEnabled(false);
 386                     mVideoPreview.stopPlayback();
 387                     mAutoplay = false;
 388                     mSavedPlaybackPosition = 0;
 389                     mVideoPreview.setVideoPath(mFile.getStoragePath());
 390                 }
 391             } // else : called from onError()
 392             mMediaController.updatePausePlay();
 393         }
 394
 395
 396         /**
 397          * Called when an error in playback occurs.
 398          *
 399          * @param   mp      {@link MediaPlayer} instance performing the playback.
 400          * @param   what    Type of error
 401          * @param   extra   Extra code specific to the error
 402          */
 403         @Override
 404         public boolean onError(MediaPlayer mp, int what, int extra) {
 405             if (mVideoPreview.getWindowToken() != null) {
 406                 String message = MediaService.getMessageForMediaError(getActivity(), what, extra);
 407                 new AlertDialog.Builder(getActivity())
 408                         .setMessage(message)
 409                         .setPositiveButton(android.R.string.VideoView_error_button,
 410                                 new DialogInterface.OnClickListener() {
 411                                     public void onClick(DialogInterface dialog, int whichButton) {
 412                                         dialog.dismiss();
 413                                         VideoHelper.this.onCompletion(null);
 414                                     }
 415                                 })
 416                         .setCancelable(false)
 417                         .show();
 418             }
 419             return true;
 420         }
 421
 422     }
 423
 424
 425     @Override
 426     public void onStop() {
 427         super.onStop();
 428
 429         if (mMediaServiceConnection != null) {
 430             Log.d(TAG, "Unbinding from MediaService ...");
 431             if (mMediaServiceBinder != null && mMediaController != null) {
 432                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 433             }
 434             getActivity().unbindService(mMediaServiceConnection);
 435             mMediaServiceConnection = null;
 436             mMediaServiceBinder = null;
 437         }
 438     }
 439
 440     @Override
 441     public boolean onTouch(View v, MotionEvent event) {
 442         if (event.getAction() == MotionEvent.ACTION_DOWN && v == mVideoPreview) {
 443             startFullScreenVideo();
 444             return true;
 445         }
 446         return false;
 447     }
 448
 449
 450     private void startFullScreenVideo() {
 451         Intent i = new Intent(getActivity(), PreviewVideoActivity.class);
 452         i.putExtra(PreviewVideoActivity.EXTRA_ACCOUNT, mAccount);
 453         i.putExtra(PreviewVideoActivity.EXTRA_FILE, mFile);
 454         i.putExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, mVideoPreview.isPlaying());
 455         mVideoPreview.pause();
 456         i.putExtra(PreviewVideoActivity.EXTRA_START_POSITION, mVideoPreview.getCurrentPosition());
 457         startActivityForResult(i, 0);
 458     }
 459
 460
 461     @Override
 462     public void onActivityResult (int requestCode, int resultCode, Intent data) {
 463         super.onActivityResult(requestCode, resultCode, data);
 464         if (resultCode == Activity.RESULT_OK) {
 465             mSavedPlaybackPosition = data.getExtras().getInt(PreviewVideoActivity.EXTRA_START_POSITION);
 466             mAutoplay = data.getExtras().getBoolean(PreviewVideoActivity.EXTRA_AUTOPLAY);
 467         }
 468     }
 469
 470
 471     private void playAudio() {
 472         if (!mMediaServiceBinder.isPlaying(mFile)) {
 473             Log.d(TAG, "starting playback of " + mFile.getStoragePath());
 474             mMediaServiceBinder.start(mAccount, mFile, mAutoplay, mSavedPlaybackPosition);
 475
 476         } else {
 477             if (!mMediaServiceBinder.isPlaying() && mAutoplay) {
 478                 mMediaServiceBinder.start();
 479                 mMediaController.updatePausePlay();
 480             }
 481         }
 482     }
 483
 484
 485     private void bindMediaService() {
 486         Log.d(TAG, "Binding to MediaService...");
 487         if (mMediaServiceConnection == null) {
 488             mMediaServiceConnection = new MediaServiceConnection();
 489         }
 490         getActivity().bindService(  new Intent(getActivity(),
 491                                     MediaService.class),
 492                                     mMediaServiceConnection,
 493                                     Context.BIND_AUTO_CREATE);
 494             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 495     }
 496
 497     /** Defines callbacks for service binding, passed to bindService() */
 498     private class MediaServiceConnection implements ServiceConnection {
 499
 500         @Override
 501         public void onServiceConnected(ComponentName component, IBinder service) {
 502             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 503                 Log.d(TAG, "Media service connected");
 504                 mMediaServiceBinder = (MediaServiceBinder) service;
 505                 if (mMediaServiceBinder != null) {
 506                     prepareMediaController();
 507                     playAudio();    // do not wait for the touch of nobody to play audio
 508
 509                     Log.d(TAG, "Successfully bound to MediaService, MediaController ready");
 510
 511                 } else {
 512                     Log.e(TAG, "Unexpected response from MediaService while binding");
 513                 }
 514             }
 515         }
 516
 517         private void prepareMediaController() {
 518             mMediaServiceBinder.registerMediaController(mMediaController);
 519             if (mMediaController != null) {
 520                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 521                 mMediaController.setEnabled(true);
 522                 mMediaController.updatePausePlay();
 523             }
 524         }
 525
 526         @Override
 527         public void onServiceDisconnected(ComponentName component) {
 528             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 529                 Log.e(TAG, "Media service suddenly disconnected");
 530                 if (mMediaController != null) {
 531                     mMediaController.setMediaPlayer(null);
 532                 } else {
 533                     Toast.makeText(getActivity(), "No media controller to release when disconnected from media service", Toast.LENGTH_SHORT).show();
 534                 }
 535                 mMediaServiceBinder = null;
 536                 mMediaServiceConnection = null;
 537             }
 538         }
 539     }
 540
 541
 542
 543     /**
 544      * Opens the previewed file with an external application.
 545      *
 546      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 547      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 548      * available apps for the MIME type known from the file extension, to let the user choose
 549      */
 550     private void openFile() {
 551         stopPreview(true);
 552         String storagePath = mFile.getStoragePath();
 553         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 554         try {
 555             Intent i = new Intent(Intent.ACTION_VIEW);
 556             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 557             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 558             startActivity(i);
 559
 560         } catch (Throwable t) {
 561             Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 562             boolean toastIt = true;
 563             String mimeType = "";
 564             try {
 565                 Intent i = new Intent(Intent.ACTION_VIEW);
 566                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 567                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 568                     if (mimeType != null) {
 569                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 570                     } else {
 571                         // desperate try
 572                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 573                     }
 574                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 575                     startActivity(i);
 576                     toastIt = false;
 577                 }
 578
 579             } catch (IndexOutOfBoundsException e) {
 580                 Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 581
 582             } catch (ActivityNotFoundException e) {
 583                 Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 584
 585             } catch (Throwable th) {
 586                 Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 587
 588             } finally {
 589                 if (toastIt) {
 590                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 591                 }
 592             }
 593
 594         }
 595         finish();
 596     }
 597
 598     /**
 599      * Starts a the removal of the previewed file.
 600      *
 601      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 602      * depending upon the user selection in the dialog.
 603      */
 604     private void removeFile() {
 605         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 606                 R.string.confirmation_remove_alert,
 607                 new String[]{mFile.getFileName()},
 608                 R.string.confirmation_remove_remote_and_local,
 609                 R.string.confirmation_remove_local,
 610                 R.string.common_cancel);
 611         confDialog.setOnConfirmationListener(this);
 612         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 613     }
 614
 615
 616     /**
 617      * Performs the removal of the previewed file, both locally and in the server.
 618      */
 619     @Override
 620     public void onConfirmation(String callerTag) {
 621         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 622             stopPreview(true);
 623             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 624                                                             true,
 625                                                             mStorageManager);
 626             WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
 627             mLastRemoteOperation.execute(wc, this, mHandler);
 628
 629             boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 630             getActivity().showDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 631         }
 632     }
 633
 634
 635     /**
 636      * Removes the file from local storage
 637      */
 638     @Override
 639     public void onNeutral(String callerTag) {
 640         // TODO this code should be made in a secondary thread,
 641         if (mFile.isDown()) {   // checks it is still there
 642             stopPreview(true);
 643             File f = new File(mFile.getStoragePath());
 644             f.delete();
 645             mFile.setStoragePath(null);
 646             mStorageManager.saveFile(mFile);
 647             finish();
 648         }
 649     }
 650
 651     /**
 652      * User cancelled the removal action.
 653      */
 654     @Override
 655     public void onCancel(String callerTag) {
 656         // nothing to do here
 657     }
 658
 659
 660     /**
 661      * {@inheritDoc}
 662      */
 663     public OCFile getFile(){
 664         return mFile;
 665     }
 666
 667     /*
 668     /**
 669      * Use this method to signal this Activity that it shall update its view.
 670      *
 671      * @param file : An {@link OCFile}
 672      *-/
 673     public void updateFileDetails(OCFile file, Account ocAccount) {
 674         mFile = file;
 675         if (ocAccount != null && (
 676                 mStorageManager == null ||
 677                 (mAccount != null && !mAccount.equals(ocAccount))
 678            )) {
 679             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 680         }
 681         mAccount = ocAccount;
 682         updateFileDetails(false);
 683     }
 684     */
 685
 686
 687     /**
 688      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 689      *
 690      * @param file      File to test if can be previewed.
 691      * @return          'True' if the file can be handled by the fragment.
 692      */
 693     public static boolean canBePreviewed(OCFile file) {
 694         return (file != null && (file.isAudio() || file.isVideo()));
 695     }
 696
 697     /**
 698      * {@inheritDoc}
 699      */
 700     @Override
 701     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 702         if (operation.equals(mLastRemoteOperation)) {
 703             if (operation instanceof RemoveFileOperation) {
 704                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 705             }
 706         }
 707     }
 708
 709     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 710         boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 711         getActivity().dismissDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 712
 713         if (result.isSuccess()) {
 714             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 715             msg.show();
 716             finish();
 717
 718         } else {
 719             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 720             msg.show();
 721             if (result.isSslRecoverableException()) {
 722                 // TODO show the SSL warning dialog
 723             }
 724         }
 725     }
 726
 727     private void stopPreview(boolean stopAudio) {
 728         if (mFile.isAudio() && stopAudio) {
 729             mMediaServiceBinder.pause();
 730
 731         } else if (mFile.isVideo()) {
 732             mVideoPreview.stopPlayback();
 733         }
 734     }
 735
 736
 737
 738     /**
 739      * Finishes the preview
 740      */
 741     private void finish() {
 742         Activity container = getActivity();
 743         if (container instanceof FileDisplayActivity) {
 744             // double pane
 745             FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 746             transaction.replace(R.id.file_details_container, new FileDetailFragment(null, null), FileDetailFragment.FTAG); // empty FileDetailFragment
 747             transaction.commit();
 748             ((FileFragment.ContainerActivity)container).onFileStateChanged();
 749         } else {
 750             container.finish();
 751         }
 752     }
 753
 754 }