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.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.support.v4.app.FragmentTransaction;
  42 import android.view.LayoutInflater;
  43 import android.view.MotionEvent;
  44 import android.view.View;
  45 import android.view.View.OnTouchListener;
  46 import android.view.ViewGroup;
  47 import android.webkit.MimeTypeMap;
  48 import android.widget.ImageView;
  49 import android.widget.Toast;
  50 import android.widget.VideoView;
  51
  52 import com.actionbarsherlock.app.SherlockFragment;
  53 import com.actionbarsherlock.view.Menu;
  54 import com.actionbarsherlock.view.MenuInflater;
  55 import com.actionbarsherlock.view.MenuItem;
  56 import com.owncloud.android.datamodel.FileDataStorageManager;
  57 import com.owncloud.android.datamodel.OCFile;
  58 import com.owncloud.android.media.MediaControlView;
  59 import com.owncloud.android.media.MediaService;
  60 import com.owncloud.android.media.MediaServiceBinder;
  61 import com.owncloud.android.operations.OnRemoteOperationListener;
  62 import com.owncloud.android.operations.RemoteOperation;
  63 import com.owncloud.android.operations.RemoteOperationResult;
  64 import com.owncloud.android.operations.RemoveFileOperation;
  65 import com.owncloud.android.ui.activity.FileDetailActivity;
  66 import com.owncloud.android.ui.activity.FileDisplayActivity;
  67 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  68 import com.owncloud.android.ui.fragment.FileDetailFragment;
  69 import com.owncloud.android.ui.fragment.FileFragment;
  70
  71 import com.owncloud.android.Log_OC;
  72 import com.owncloud.android.R;
  73 import eu.alefzero.webdav.WebdavUtils;
  74
  75 /**
  76  * This fragment shows a preview of a downloaded media file (audio or video).
  77  *
  78  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  79  *
  80  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  81  *
  82  * @author David A. Velasco
  83  */
  84 public class PreviewMediaFragment extends SherlockFragment implements
  85         OnTouchListener , FileFragment,
  86         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  87
  88     public static final String EXTRA_FILE = "FILE";
  89     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  90     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  91     private static final String EXTRA_PLAYING = "PLAYING";
  92
  93     private View mView;
  94     private OCFile mFile;
  95     private Account mAccount;
  96     private FileDataStorageManager mStorageManager;
  97     private ImageView mImagePreview;
  98     private VideoView mVideoPreview;
  99     private int mSavedPlaybackPosition;
 100
 101     private Handler mHandler;
 102     private RemoteOperation mLastRemoteOperation;
 103
 104     private MediaServiceBinder mMediaServiceBinder = null;
 105     private MediaControlView mMediaController = null;
 106     private MediaServiceConnection mMediaServiceConnection = null;
 107     private VideoHelper mVideoHelper;
 108     private boolean mAutoplay;
 109
 110     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 111
 112
 113     /**
 114      * Creates a fragment to preview a file.
 115      *
 116      * When 'fileToDetail' or 'ocAccount' are null
 117      *
 118      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 119      * @param ocAccount         An ownCloud account; needed to start downloads
 120      */
 121     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount) {
 122         mFile = fileToDetail;
 123         mAccount = ocAccount;
 124         mSavedPlaybackPosition = 0;
 125         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 126         mAutoplay = true;
 127     }
 128
 129
 130     /**
 131      *  Creates an empty fragment for previews.
 132      *
 133      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 134      *
 135      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 136      */
 137     public PreviewMediaFragment() {
 138         mFile = null;
 139         mAccount = null;
 140         mSavedPlaybackPosition = 0;
 141         mStorageManager = null;
 142         mAutoplay = true;
 143     }
 144
 145
 146     /**
 147      * {@inheritDoc}
 148      */
 149     @Override
 150     public void onCreate(Bundle savedInstanceState) {
 151         super.onCreate(savedInstanceState);
 152         mHandler = new Handler();
 153         setHasOptionsMenu(true);
 154     }
 155
 156
 157     /**
 158      * {@inheritDoc}
 159      */
 160     @Override
 161     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 162             Bundle savedInstanceState) {
 163         super.onCreateView(inflater, container, savedInstanceState);
 164
 165         mView = inflater.inflate(R.layout.file_preview, container, false);
 166
 167         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 168         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 169         mVideoPreview.setOnTouchListener(this);
 170
 171         mMediaController = (MediaControlView)mView.findViewById(R.id.media_controller);
 172
 173         return mView;
 174     }
 175
 176
 177     /**
 178      * {@inheritDoc}
 179      */
 180     @Override
 181     public void onAttach(Activity activity) {
 182         super.onAttach(activity);
 183         if (!(activity instanceof FileFragment.ContainerActivity))
 184             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 185     }
 186
 187
 188     /**
 189      * {@inheritDoc}
 190      */
 191     @Override
 192     public void onActivityCreated(Bundle savedInstanceState) {
 193         super.onActivityCreated(savedInstanceState);
 194
 195         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 196         if (savedInstanceState != null) {
 197             mFile = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE);
 198             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 199             mSavedPlaybackPosition = savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 200             mAutoplay = savedInstanceState.getBoolean(PreviewMediaFragment.EXTRA_PLAYING);
 201
 202         }
 203         if (mFile == null) {
 204             throw new IllegalStateException("Instanced with a NULL OCFile");
 205         }
 206         if (mAccount == null) {
 207             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 208         }
 209         if (!mFile.isDown()) {
 210             throw new IllegalStateException("There is no local file to preview");
 211         }
 212         if (mFile.isVideo()) {
 213             mVideoPreview.setVisibility(View.VISIBLE);
 214             mImagePreview.setVisibility(View.GONE);
 215             prepareVideo();
 216
 217         } else {
 218             mVideoPreview.setVisibility(View.GONE);
 219             mImagePreview.setVisibility(View.VISIBLE);
 220         }
 221
 222     }
 223
 224
 225     /**
 226      * {@inheritDoc}
 227      */
 228     @Override
 229     public void onSaveInstanceState(Bundle outState) {
 230         super.onSaveInstanceState(outState);
 231         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, mFile);
 232         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 233
 234         if (mFile.isVideo()) {
 235             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 236             mAutoplay = mVideoPreview.isPlaying();
 237             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mSavedPlaybackPosition);
 238             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mAutoplay);
 239         } else {
 240             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mMediaServiceBinder.getCurrentPosition());
 241             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING , mMediaServiceBinder.isPlaying());
 242         }
 243     }
 244
 245
 246     @Override
 247     public void onStart() {
 248         super.onStart();
 249
 250         if (mFile != null) {
 251            if (mFile.isAudio()) {
 252                bindMediaService();
 253
 254            } else if (mFile.isVideo()) {
 255                stopAudio();
 256                playVideo();
 257            }
 258         }
 259     }
 260
 261
 262     private void stopAudio() {
 263         Intent i = new Intent(getSherlockActivity(), MediaService.class);
 264         i.setAction(MediaService.ACTION_STOP_ALL);
 265         getSherlockActivity().startService(i);
 266     }
 267
 268
 269     /**
 270      * {@inheritDoc}
 271      */
 272     @Override
 273     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 274         super.onCreateOptionsMenu(menu, inflater);
 275
 276         inflater.inflate(R.menu.file_actions_menu, menu);
 277         List<Integer> toHide = new ArrayList<Integer>();
 278
 279         MenuItem item = null;
 280         toHide.add(R.id.action_cancel_download);
 281         toHide.add(R.id.action_cancel_upload);
 282         toHide.add(R.id.action_download_file);
 283         toHide.add(R.id.action_rename_file);    // by now
 284
 285         for (int i : toHide) {
 286             item = menu.findItem(i);
 287             if (item != null) {
 288                 item.setVisible(false);
 289                 item.setEnabled(false);
 290             }
 291         }
 292
 293     }
 294
 295
 296     /**
 297      * {@inheritDoc}
 298      */
 299     @Override
 300     public boolean onOptionsItemSelected(MenuItem item) {
 301         switch (item.getItemId()) {
 302             case R.id.action_open_file_with: {
 303                 openFile();
 304                 return true;
 305             }
 306             case R.id.action_remove_file: {
 307                 removeFile();
 308                 return true;
 309             }
 310             case R.id.action_see_details: {
 311                 seeDetails();
 312                 return true;
 313             }
 314
 315             default:
 316                 return false;
 317         }
 318     }
 319
 320
 321     private void seeDetails() {
 322         stopPreview(false);
 323         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 324     }
 325
 326
 327     private void prepareVideo() {
 328         // create helper to get more control on the playback
 329         mVideoHelper = new VideoHelper();
 330         mVideoPreview.setOnPreparedListener(mVideoHelper);
 331         mVideoPreview.setOnCompletionListener(mVideoHelper);
 332         mVideoPreview.setOnErrorListener(mVideoHelper);
 333     }
 334
 335     private void playVideo() {
 336         // create and prepare control panel for the user
 337         mMediaController.setMediaPlayer(mVideoPreview);
 338
 339         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 340         mVideoPreview.setVideoPath(mFile.getStoragePath());
 341     }
 342
 343
 344     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 345
 346         /**
 347          * Called when the file is ready to be played.
 348          *
 349          * Just starts the playback.
 350          *
 351          * @param   mp    {@link MediaPlayer} instance performing the playback.
 352          */
 353         @Override
 354         public void onPrepared(MediaPlayer vp) {
 355             Log_OC.e(TAG, "onPrepared");
 356             mVideoPreview.seekTo(mSavedPlaybackPosition);
 357             if (mAutoplay) {
 358                 mVideoPreview.start();
 359             }
 360             mMediaController.setEnabled(true);
 361             mMediaController.updatePausePlay();
 362         }
 363
 364
 365         /**
 366          * Called when the file is finished playing.
 367          *
 368          * Finishes the activity.
 369          *
 370          * @param   mp    {@link MediaPlayer} instance performing the playback.
 371          */
 372         @Override
 373         public void onCompletion(MediaPlayer  mp) {
 374             Log_OC.e(TAG, "completed");
 375             if (mp != null) {
 376                 mVideoPreview.seekTo(0);
 377                 // next lines are necessary to work around undesired video loops
 378                 if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD) {
 379                     mVideoPreview.pause();
 380
 381                 } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD_MR1) {
 382                     // mVideePreview.pause() is not enough
 383
 384                     mMediaController.setEnabled(false);
 385                     mVideoPreview.stopPlayback();
 386                     mAutoplay = false;
 387                     mSavedPlaybackPosition = 0;
 388                     mVideoPreview.setVideoPath(mFile.getStoragePath());
 389                 }
 390             } // else : called from onError()
 391             mMediaController.updatePausePlay();
 392         }
 393
 394
 395         /**
 396          * Called when an error in playback occurs.
 397          *
 398          * @param   mp      {@link MediaPlayer} instance performing the playback.
 399          * @param   what    Type of error
 400          * @param   extra   Extra code specific to the error
 401          */
 402         @Override
 403         public boolean onError(MediaPlayer mp, int what, int extra) {
 404             if (mVideoPreview.getWindowToken() != null) {
 405                 String message = MediaService.getMessageForMediaError(getActivity(), what, extra);
 406                 new AlertDialog.Builder(getActivity())
 407                         .setMessage(message)
 408                         .setPositiveButton(android.R.string.VideoView_error_button,
 409                                 new DialogInterface.OnClickListener() {
 410                                     public void onClick(DialogInterface dialog, int whichButton) {
 411                                         dialog.dismiss();
 412                                         VideoHelper.this.onCompletion(null);
 413                                     }
 414                                 })
 415                         .setCancelable(false)
 416                         .show();
 417             }
 418             return true;
 419         }
 420
 421     }
 422
 423
 424     @Override
 425     public void onStop() {
 426         super.onStop();
 427
 428         if (mMediaServiceConnection != null) {
 429             Log_OC.d(TAG, "Unbinding from MediaService ...");
 430             if (mMediaServiceBinder != null && mMediaController != null) {
 431                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 432             }
 433             getActivity().unbindService(mMediaServiceConnection);
 434             mMediaServiceConnection = null;
 435             mMediaServiceBinder = null;
 436         }
 437     }
 438
 439     @Override
 440     public boolean onTouch(View v, MotionEvent event) {
 441         if (event.getAction() == MotionEvent.ACTION_DOWN && v == mVideoPreview) {
 442             startFullScreenVideo();
 443             return true;
 444         }
 445         return false;
 446     }
 447
 448
 449     private void startFullScreenVideo() {
 450         Intent i = new Intent(getActivity(), PreviewVideoActivity.class);
 451         i.putExtra(PreviewVideoActivity.EXTRA_ACCOUNT, mAccount);
 452         i.putExtra(PreviewVideoActivity.EXTRA_FILE, mFile);
 453         i.putExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, mVideoPreview.isPlaying());
 454         mVideoPreview.pause();
 455         i.putExtra(PreviewVideoActivity.EXTRA_START_POSITION, mVideoPreview.getCurrentPosition());
 456         startActivityForResult(i, 0);
 457     }
 458
 459
 460     @Override
 461     public void onActivityResult (int requestCode, int resultCode, Intent data) {
 462         super.onActivityResult(requestCode, resultCode, data);
 463         if (resultCode == Activity.RESULT_OK) {
 464             mSavedPlaybackPosition = data.getExtras().getInt(PreviewVideoActivity.EXTRA_START_POSITION);
 465             mAutoplay = data.getExtras().getBoolean(PreviewVideoActivity.EXTRA_AUTOPLAY);
 466         }
 467     }
 468
 469
 470     private void playAudio() {
 471         if (!mMediaServiceBinder.isPlaying(mFile)) {
 472             Log_OC.d(TAG, "starting playback of " + mFile.getStoragePath());
 473             mMediaServiceBinder.start(mAccount, mFile, mAutoplay, mSavedPlaybackPosition);
 474
 475         } else {
 476             if (!mMediaServiceBinder.isPlaying() && mAutoplay) {
 477                 mMediaServiceBinder.start();
 478                 mMediaController.updatePausePlay();
 479             }
 480         }
 481     }
 482
 483
 484     private void bindMediaService() {
 485         Log_OC.d(TAG, "Binding to MediaService...");
 486         if (mMediaServiceConnection == null) {
 487             mMediaServiceConnection = new MediaServiceConnection();
 488         }
 489         getActivity().bindService(  new Intent(getActivity(),
 490                                     MediaService.class),
 491                                     mMediaServiceConnection,
 492                                     Context.BIND_AUTO_CREATE);
 493             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 494     }
 495
 496     /** Defines callbacks for service binding, passed to bindService() */
 497     private class MediaServiceConnection implements ServiceConnection {
 498
 499         @Override
 500         public void onServiceConnected(ComponentName component, IBinder service) {
 501             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 502                 Log_OC.d(TAG, "Media service connected");
 503                 mMediaServiceBinder = (MediaServiceBinder) service;
 504                 if (mMediaServiceBinder != null) {
 505                     prepareMediaController();
 506                     playAudio();    // do not wait for the touch of nobody to play audio
 507
 508                     Log_OC.d(TAG, "Successfully bound to MediaService, MediaController ready");
 509
 510                 } else {
 511                     Log_OC.e(TAG, "Unexpected response from MediaService while binding");
 512                 }
 513             }
 514         }
 515
 516         private void prepareMediaController() {
 517             mMediaServiceBinder.registerMediaController(mMediaController);
 518             if (mMediaController != null) {
 519                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 520                 mMediaController.setEnabled(true);
 521                 mMediaController.updatePausePlay();
 522             }
 523         }
 524
 525         @Override
 526         public void onServiceDisconnected(ComponentName component) {
 527             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 528                 Log_OC.e(TAG, "Media service suddenly disconnected");
 529                 if (mMediaController != null) {
 530                     mMediaController.setMediaPlayer(null);
 531                 } else {
 532                     Toast.makeText(getActivity(), "No media controller to release when disconnected from media service", Toast.LENGTH_SHORT).show();
 533                 }
 534                 mMediaServiceBinder = null;
 535                 mMediaServiceConnection = null;
 536             }
 537         }
 538     }
 539
 540
 541
 542     /**
 543      * Opens the previewed file with an external application.
 544      *
 545      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 546      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 547      * available apps for the MIME type known from the file extension, to let the user choose
 548      */
 549     private void openFile() {
 550         stopPreview(true);
 551         String storagePath = mFile.getStoragePath();
 552         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 553         try {
 554             Intent i = new Intent(Intent.ACTION_VIEW);
 555             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 556             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 557             startActivity(i);
 558
 559         } catch (Throwable t) {
 560             Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 561             boolean toastIt = true;
 562             String mimeType = "";
 563             try {
 564                 Intent i = new Intent(Intent.ACTION_VIEW);
 565                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 566                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 567                     if (mimeType != null) {
 568                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 569                     } else {
 570                         // desperate try
 571                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 572                     }
 573                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 574                     startActivity(i);
 575                     toastIt = false;
 576                 }
 577
 578             } catch (IndexOutOfBoundsException e) {
 579                 Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 580
 581             } catch (ActivityNotFoundException e) {
 582                 Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 583
 584             } catch (Throwable th) {
 585                 Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 586
 587             } finally {
 588                 if (toastIt) {
 589                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 590                 }
 591             }
 592
 593         }
 594         finish();
 595     }
 596
 597     /**
 598      * Starts a the removal of the previewed file.
 599      *
 600      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 601      * depending upon the user selection in the dialog.
 602      */
 603     private void removeFile() {
 604         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 605                 R.string.confirmation_remove_alert,
 606                 new String[]{mFile.getFileName()},
 607                 R.string.confirmation_remove_remote_and_local,
 608                 R.string.confirmation_remove_local,
 609                 R.string.common_cancel);
 610         confDialog.setOnConfirmationListener(this);
 611         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 612     }
 613
 614
 615     /**
 616      * Performs the removal of the previewed file, both locally and in the server.
 617      */
 618     @Override
 619     public void onConfirmation(String callerTag) {
 620         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 621             stopPreview(true);
 622             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 623                                                             true,
 624                                                             mStorageManager);
 625             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 626
 627             boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 628             getActivity().showDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 629         }
 630     }
 631
 632
 633     /**
 634      * Removes the file from local storage
 635      */
 636     @Override
 637     public void onNeutral(String callerTag) {
 638         // TODO this code should be made in a secondary thread,
 639         if (mFile.isDown()) {   // checks it is still there
 640             stopPreview(true);
 641             File f = new File(mFile.getStoragePath());
 642             f.delete();
 643             mFile.setStoragePath(null);
 644             mStorageManager.saveFile(mFile);
 645             finish();
 646         }
 647     }
 648
 649     /**
 650      * User cancelled the removal action.
 651      */
 652     @Override
 653     public void onCancel(String callerTag) {
 654         // nothing to do here
 655     }
 656
 657
 658     /**
 659      * {@inheritDoc}
 660      */
 661     public OCFile getFile(){
 662         return mFile;
 663     }
 664
 665     /*
 666     /**
 667      * Use this method to signal this Activity that it shall update its view.
 668      *
 669      * @param file : An {@link OCFile}
 670      *-/
 671     public void updateFileDetails(OCFile file, Account ocAccount) {
 672         mFile = file;
 673         if (ocAccount != null && (
 674                 mStorageManager == null ||
 675                 (mAccount != null && !mAccount.equals(ocAccount))
 676            )) {
 677             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 678         }
 679         mAccount = ocAccount;
 680         updateFileDetails(false);
 681     }
 682     */
 683
 684
 685     /**
 686      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 687      *
 688      * @param file      File to test if can be previewed.
 689      * @return          'True' if the file can be handled by the fragment.
 690      */
 691     public static boolean canBePreviewed(OCFile file) {
 692         return (file != null && (file.isAudio() || file.isVideo()));
 693     }
 694
 695     /**
 696      * {@inheritDoc}
 697      */
 698     @Override
 699     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 700         if (operation.equals(mLastRemoteOperation)) {
 701             if (operation instanceof RemoveFileOperation) {
 702                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 703             }
 704         }
 705     }
 706
 707     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 708         boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 709         getActivity().dismissDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 710
 711         if (result.isSuccess()) {
 712             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 713             msg.show();
 714             finish();
 715
 716         } else {
 717             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 718             msg.show();
 719             if (result.isSslRecoverableException()) {
 720                 // TODO show the SSL warning dialog
 721             }
 722         }
 723     }
 724
 725     private void stopPreview(boolean stopAudio) {
 726         if (mFile.isAudio() && stopAudio) {
 727             mMediaServiceBinder.pause();
 728
 729         } else if (mFile.isVideo()) {
 730             mVideoPreview.stopPlayback();
 731         }
 732     }
 733
 734
 735
 736     /**
 737      * Finishes the preview
 738      */
 739     private void finish() {
 740         Activity container = getActivity();
 741         if (container instanceof FileDisplayActivity) {
 742             // double pane
 743             FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 744             transaction.replace(R.id.file_details_container, new FileDetailFragment(null, null), FileDetailFragment.FTAG); // empty FileDetailFragment
 745             transaction.commit();
 746             ((FileFragment.ContainerActivity)container).onFileStateChanged();
 747         } else {
 748             container.finish();
 749         }
 750     }
 751
 752 }