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

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