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