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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18 package com.owncloud.android.ui.preview;
  19
  20 import java.io.File;
  21 import java.util.ArrayList;
  22 import java.util.List;
  23
  24 import android.accounts.Account;
  25 import android.app.Activity;
  26 import android.app.AlertDialog;
  27 import android.content.ActivityNotFoundException;
  28 import android.content.ComponentName;
  29 import android.content.Context;
  30 import android.content.DialogInterface;
  31 import android.content.Intent;
  32 import android.content.ServiceConnection;
  33 import android.media.MediaPlayer;
  34 import android.media.MediaPlayer.OnCompletionListener;
  35 import android.media.MediaPlayer.OnErrorListener;
  36 import android.media.MediaPlayer.OnPreparedListener;
  37 import android.net.Uri;
  38 import android.os.Bundle;
  39 import android.os.Handler;
  40 import android.os.IBinder;
  41 import android.support.v4.app.FragmentTransaction;
  42 import android.util.Log;
  43 import android.view.LayoutInflater;
  44 import android.view.MotionEvent;
  45 import android.view.View;
  46 import android.view.View.OnTouchListener;
  47 import android.view.ViewGroup;
  48 import android.webkit.MimeTypeMap;
  49 import android.widget.ImageView;
  50 import android.widget.MediaController;
  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.MediaService;
  61 import com.owncloud.android.media.MediaServiceBinder;
  62 import com.owncloud.android.network.OwnCloudClientUtils;
  63 import com.owncloud.android.operations.OnRemoteOperationListener;
  64 import com.owncloud.android.operations.RemoteOperation;
  65 import com.owncloud.android.operations.RemoteOperationResult;
  66 import com.owncloud.android.operations.RemoveFileOperation;
  67 import com.owncloud.android.ui.activity.FileDetailActivity;
  68 import com.owncloud.android.ui.activity.FileDisplayActivity;
  69 import com.owncloud.android.ui.activity.TransferServiceGetter;
  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 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
  74 import com.owncloud.android.ui.fragment.FileFragment.ContainerActivity;
  75
  76 import com.owncloud.android.R;
  77 import eu.alefzero.webdav.WebdavClient;
  78 import eu.alefzero.webdav.WebdavUtils;
  79
  80 /**
  81  * This fragment shows a preview of a downloaded media file (audio or video).
  82  *
  83  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  84  *
  85  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  86  *
  87  * @author David A. Velasco
  88  */
  89 public class PreviewMediaFragment extends SherlockFragment implements
  90         OnTouchListener , FileFragment,
  91         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener  {
  92
  93     public static final String EXTRA_FILE = "FILE";
  94     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  95     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  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 MediaController mMediaController = null;
 110     private MediaServiceConnection mMediaServiceConnection = null;
 111     private VideoHelper mVideoHelper;
 112
 113     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 114
 115
 116     /**
 117      * Creates a fragment to preview a file.
 118      *
 119      * When 'fileToDetail' or 'ocAccount' are null
 120      *
 121      * @param fileToDetail      An {@link OCFile} to preview in the fragment
 122      * @param ocAccount         An ownCloud account; needed to start downloads
 123      */
 124     public PreviewMediaFragment(OCFile fileToDetail, Account ocAccount) {
 125         mFile = fileToDetail;
 126         mAccount = ocAccount;
 127         mSavedPlaybackPosition = 0;
 128         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 129     }
 130
 131
 132     /**
 133      *  Creates an empty fragment for previews.
 134      *
 135      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 136      *
 137      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 138      */
 139     public PreviewMediaFragment() {
 140         mFile = null;
 141         mAccount = null;
 142         mSavedPlaybackPosition = 0;
 143         mStorageManager = null;
 144     }
 145
 146
 147     /**
 148      * {@inheritDoc}
 149      */
 150     @Override
 151     public void onCreate(Bundle savedInstanceState) {
 152         super.onCreate(savedInstanceState);
 153         mHandler = new Handler();
 154         setHasOptionsMenu(true);
 155     }
 156
 157
 158     /**
 159      * {@inheritDoc}
 160      */
 161     @Override
 162     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 163             Bundle savedInstanceState) {
 164         super.onCreateView(inflater, container, savedInstanceState);
 165
 166         mView = inflater.inflate(R.layout.file_preview, container, false);
 167
 168         mImagePreview = (ImageView)mView.findViewById(R.id.image_preview);
 169         mImagePreview.setOnTouchListener(this);
 170         mVideoPreview = (VideoView)mView.findViewById(R.id.video_preview);
 171
 172         //updateFileDetails(false);
 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
 201         }
 202         if (mFile == null) {
 203             throw new IllegalStateException("Instanced with a NULL OCFile");
 204         }
 205         if (mAccount == null) {
 206             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 207         }
 208         if (!mFile.isDown()) {
 209             throw new IllegalStateException("There is no local file to preview");
 210         }
 211         if (mFile.isVideo()) {
 212             mVideoPreview.setVisibility(View.VISIBLE);
 213             mImagePreview.setVisibility(View.GONE);
 214             prepareVideo();
 215
 216         } else {
 217             mVideoPreview.setVisibility(View.GONE);
 218             mImagePreview.setVisibility(View.VISIBLE);
 219         }
 220
 221     }
 222
 223
 224     /**
 225      * {@inheritDoc}
 226      */
 227     @Override
 228     public void onSaveInstanceState(Bundle outState) {
 229         super.onSaveInstanceState(outState);
 230
 231         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, mFile);
 232         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 233
 234         if (mVideoPreview.isPlaying()) {
 235             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION , mVideoPreview.getCurrentPosition());
 236         }
 237     }
 238
 239
 240     @Override
 241     public void onStart() {
 242         super.onStart();
 243
 244         if (mFile != null) {
 245            if (mFile.isAudio()) {
 246                bindMediaService();
 247
 248            } else if (mFile.isVideo()) {
 249                playVideo();
 250            }
 251         }
 252     }
 253
 254
 255     /**
 256      * {@inheritDoc}
 257      */
 258     @Override
 259     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 260         super.onCreateOptionsMenu(menu, inflater);
 261
 262         inflater.inflate(R.menu.file_actions_menu, menu);
 263         List<Integer> toHide = new ArrayList<Integer>();
 264
 265         MenuItem item = null;
 266         toHide.add(R.id.action_cancel_download);
 267         toHide.add(R.id.action_cancel_upload);
 268         toHide.add(R.id.action_download_file);
 269         toHide.add(R.id.action_rename_file);    // by now
 270
 271         for (int i : toHide) {
 272             item = menu.findItem(i);
 273             if (item != null) {
 274                 item.setVisible(false);
 275                 item.setEnabled(false);
 276             }
 277         }
 278
 279     }
 280
 281
 282     /**
 283      * {@inheritDoc}
 284      */
 285     @Override
 286     public boolean onOptionsItemSelected(MenuItem item) {
 287         switch (item.getItemId()) {
 288             case R.id.action_open_file_with: {
 289                 openFile();
 290                 return true;
 291             }
 292             case R.id.action_remove_file: {
 293                 removeFile();
 294                 return true;
 295             }
 296             case R.id.action_see_details: {
 297                 seeDetails();
 298                 return true;
 299             }
 300
 301             default:
 302                 return false;
 303         }
 304     }
 305
 306
 307     private void seeDetails() {
 308         stopPreview(false);
 309         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 310     }
 311
 312
 313     private void prepareVideo() {
 314         // create helper to get more control on the playback
 315         mVideoHelper = new VideoHelper();
 316         mVideoPreview.setOnPreparedListener(mVideoHelper);
 317         mVideoPreview.setOnCompletionListener(mVideoHelper);
 318         mVideoPreview.setOnErrorListener(mVideoHelper);
 319     }
 320
 321     private void playVideo() {
 322         // load the video file in the video player ; when done, VideoHelper#onPrepared() will be called
 323         mVideoPreview.setVideoPath(mFile.getStoragePath());
 324
 325         // create and prepare control panel for the user
 326         mMediaController = new MediaController(getActivity());
 327         mMediaController.setMediaPlayer(mVideoPreview);
 328         mMediaController.setAnchorView(mVideoPreview);
 329         mVideoPreview.setMediaController(mMediaController);
 330     }
 331
 332
 333     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 334
 335         /**
 336          * Called when the file is ready to be played.
 337          *
 338          * Just starts the playback.
 339          *
 340          * @param   mp    {@link MediaPlayer} instance performing the playback.
 341          */
 342         @Override
 343         public void onPrepared(MediaPlayer vp) {
 344             mVideoPreview.seekTo(mSavedPlaybackPosition);
 345             mVideoPreview.start();
 346             mMediaController.show(MediaService.MEDIA_CONTROL_SHORT_LIFE);
 347         }
 348
 349
 350         /**
 351          * Called when the file is finished playing.
 352          *
 353          * Finishes the activity.
 354          *
 355          * @param   mp    {@link MediaPlayer} instance performing the playback.
 356          */
 357         @Override
 358         public void onCompletion(MediaPlayer  mp) {
 359             // nothing, right now
 360         }
 361
 362
 363         /**
 364          * Called when an error in playback occurs.
 365          *
 366          * @param   mp      {@link MediaPlayer} instance performing the playback.
 367          * @param   what    Type of error
 368          * @param   extra   Extra code specific to the error
 369          */
 370         @Override
 371         public boolean onError(MediaPlayer mp, int what, int extra) {
 372             Log.e(TAG, "Error in video playback, what = " + what + ", extra = " + extra);
 373
 374             if (mMediaController != null) {
 375                 mMediaController.hide();
 376             }
 377
 378             if (mVideoPreview.getWindowToken() != null) {
 379                 String message = MediaService.getMessageForMediaError(getActivity(), what, extra);
 380                 new AlertDialog.Builder(getActivity())
 381                         .setMessage(message)
 382                         .setPositiveButton(android.R.string.VideoView_error_button,
 383                                 new DialogInterface.OnClickListener() {
 384                                     public void onClick(DialogInterface dialog, int whichButton) {
 385                                         dialog.dismiss();
 386                                         VideoHelper.this.onCompletion(null);
 387                                     }
 388                                 })
 389                         .setCancelable(false)
 390                         .show();
 391             }
 392             return true;
 393         }
 394
 395     }
 396
 397
 398     @Override
 399     public void onResume() {
 400         super.onResume();
 401         /*
 402         mDownloadFinishReceiver = new DownloadFinishReceiver();
 403         IntentFilter filter = new IntentFilter(
 404                 FileDownloader.DOWNLOAD_FINISH_MESSAGE);
 405         getActivity().registerReceiver(mDownloadFinishReceiver, filter);
 406
 407         mUploadFinishReceiver = new UploadFinishReceiver();
 408         filter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
 409         getActivity().registerReceiver(mUploadFinishReceiver, filter);
 410         */
 411
 412     }
 413
 414
 415     @Override
 416     public void onPause() {
 417         super.onPause();
 418         /*
 419         if (mVideoPreview.getVisibility() == View.VISIBLE) {
 420             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 421         }*/
 422         /*
 423         getActivity().unregisterReceiver(mDownloadFinishReceiver);
 424         mDownloadFinishReceiver = null;
 425
 426         getActivity().unregisterReceiver(mUploadFinishReceiver);
 427         mUploadFinishReceiver = null;
 428         */
 429     }
 430
 431
 432     @Override
 433     public void onStop() {
 434         super.onStop();
 435         if (mMediaServiceConnection != null) {
 436             Log.d(TAG, "Unbinding from MediaService ...");
 437             if (mMediaServiceBinder != null && mMediaController != null) {
 438                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 439             }
 440             getActivity().unbindService(mMediaServiceConnection);
 441             mMediaServiceConnection = null;
 442             mMediaServiceBinder = null;
 443             if (mMediaController != null) {
 444                 mMediaController.hide();
 445                 mMediaController = null;
 446             }
 447         }
 448     }
 449
 450     @Override
 451     public void onDestroy() {
 452         super.onDestroy();
 453     }
 454
 455
 456     @Override
 457     public boolean onTouch(View v, MotionEvent event) {
 458         if (event.getAction() == MotionEvent.ACTION_DOWN) {
 459             if (v == mImagePreview &&
 460                     mMediaServiceBinder != null && mFile.isAudio() && mMediaServiceBinder.isPlaying(mFile)) {
 461                 toggleMediaController(MediaService.MEDIA_CONTROL_PERMANENT);
 462                 return true;
 463
 464             } else if (v == mVideoPreview) {
 465                 toggleMediaController(MediaService.MEDIA_CONTROL_SHORT_LIFE);
 466                 return true;
 467             }
 468         }
 469         return false;
 470     }
 471
 472
 473     private void toggleMediaController(int time) {
 474         if (mMediaController.isShowing()) {
 475             mMediaController.hide();
 476         } else {
 477             mMediaController.show(time);
 478         }
 479     }
 480
 481
 482     private void playAudio() {
 483         if (!mMediaServiceBinder.isPlaying(mFile)) {
 484             Log.d(TAG, "starting playback of " + mFile.getStoragePath());
 485             mMediaServiceBinder.start(mAccount, mFile);
 486
 487         } else {
 488             if (!mMediaServiceBinder.isPlaying()) {
 489                 mMediaServiceBinder.start();
 490             }
 491             if (!mMediaController.isShowing() && isVisible()) {
 492                 mMediaController.show(MediaService.MEDIA_CONTROL_PERMANENT);
 493                 // TODO - fix strange bug; steps to trigger :
 494                 // 1. remove the "isVisible()" control
 495                 // 2. start the app and preview an audio file
 496                 // 3. exit from the app (home button, for instance) while the audio file is still being played
 497                 // 4. go to notification bar and click on the "ownCloud music app" notification
 498                 // PUM!
 499             }
 500         }
 501     }
 502
 503
 504     private void bindMediaService() {
 505         Log.d(TAG, "Binding to MediaService...");
 506         if (mMediaServiceConnection == null) {
 507             mMediaServiceConnection = new MediaServiceConnection();
 508         }
 509         getActivity().bindService(  new Intent(getActivity(),
 510                                     MediaService.class),
 511                                     mMediaServiceConnection,
 512                                     Context.BIND_AUTO_CREATE);
 513             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 514     }
 515
 516     /** Defines callbacks for service binding, passed to bindService() */
 517     private class MediaServiceConnection implements ServiceConnection {
 518
 519         @Override
 520         public void onServiceConnected(ComponentName component, IBinder service) {
 521             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 522                 Log.d(TAG, "Media service connected");
 523                 mMediaServiceBinder = (MediaServiceBinder) service;
 524                 if (mMediaServiceBinder != null) {
 525                     if (mMediaController == null) {
 526                         mMediaController = new MediaController(getSherlockActivity());
 527                     }
 528                     prepareMediaController();
 529                     playAudio();    // do not wait for the touch of nobody to play audio
 530
 531                     Log.d(TAG, "Successfully bound to MediaService, MediaController ready");
 532
 533                 } else {
 534                     Log.e(TAG, "Unexpected response from MediaService while binding");
 535                 }
 536             }
 537         }
 538
 539         private void prepareMediaController() {
 540             mMediaServiceBinder.registerMediaController(mMediaController);
 541             mMediaController.setMediaPlayer(mMediaServiceBinder);
 542             mMediaController.setAnchorView(getView());
 543             mMediaController.setEnabled(mMediaServiceBinder.isInPlaybackState());
 544         }
 545
 546         @Override
 547         public void onServiceDisconnected(ComponentName component) {
 548             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 549                 Log.e(TAG, "Media service suddenly disconnected");
 550                 if (mMediaController != null) {
 551                     mMediaController.hide();
 552                     mMediaController.setMediaPlayer(null);
 553                     mMediaController = null;
 554                 }
 555                 mMediaServiceBinder = null;
 556                 mMediaServiceConnection = null;
 557             }
 558         }
 559     }
 560
 561
 562
 563     /**
 564      * Opens the previewed file with an external application.
 565      *
 566      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 567      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 568      * available apps for the MIME type known from the file extension, to let the user choose
 569      */
 570     private void openFile() {
 571         stopPreview(true);
 572         String storagePath = mFile.getStoragePath();
 573         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 574         try {
 575             Intent i = new Intent(Intent.ACTION_VIEW);
 576             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 577             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 578             startActivity(i);
 579
 580         } catch (Throwable t) {
 581             Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 582             boolean toastIt = true;
 583             String mimeType = "";
 584             try {
 585                 Intent i = new Intent(Intent.ACTION_VIEW);
 586                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 587                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 588                     if (mimeType != null) {
 589                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 590                     } else {
 591                         // desperate try
 592                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 593                     }
 594                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 595                     startActivity(i);
 596                     toastIt = false;
 597                 }
 598
 599             } catch (IndexOutOfBoundsException e) {
 600                 Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 601
 602             } catch (ActivityNotFoundException e) {
 603                 Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 604
 605             } catch (Throwable th) {
 606                 Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 607
 608             } finally {
 609                 if (toastIt) {
 610                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 611                 }
 612             }
 613
 614         }
 615         finish();
 616     }
 617
 618     /**
 619      * Starts a the removal of the previewed file.
 620      *
 621      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 622      * depending upon the user selection in the dialog.
 623      */
 624     private void removeFile() {
 625         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 626                 R.string.confirmation_remove_alert,
 627                 new String[]{mFile.getFileName()},
 628                 R.string.confirmation_remove_remote_and_local,
 629                 R.string.confirmation_remove_local,
 630                 R.string.common_cancel);
 631         confDialog.setOnConfirmationListener(this);
 632         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 633     }
 634
 635
 636     /**
 637      * Performs the removal of the previewed file, both locally and in the server.
 638      */
 639     @Override
 640     public void onConfirmation(String callerTag) {
 641         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 642             stopPreview(true);
 643             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 644                                                             true,
 645                                                             mStorageManager);
 646             WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
 647             mLastRemoteOperation.execute(wc, this, mHandler);
 648
 649             boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 650             getActivity().showDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 651         }
 652     }
 653
 654
 655     /**
 656      * Removes the file from local storage
 657      */
 658     @Override
 659     public void onNeutral(String callerTag) {
 660         // TODO this code should be made in a secondary thread,
 661         if (mFile.isDown()) {   // checks it is still there
 662             stopPreview(true);
 663             File f = new File(mFile.getStoragePath());
 664             f.delete();
 665             mFile.setStoragePath(null);
 666             mStorageManager.saveFile(mFile);
 667             finish();
 668         }
 669     }
 670
 671     /**
 672      * User cancelled the removal action.
 673      */
 674     @Override
 675     public void onCancel(String callerTag) {
 676         // nothing to do here
 677     }
 678
 679
 680     /**
 681      * {@inheritDoc}
 682      */
 683     public OCFile getFile(){
 684         return mFile;
 685     }
 686
 687     /*
 688     /**
 689      * Use this method to signal this Activity that it shall update its view.
 690      *
 691      * @param file : An {@link OCFile}
 692      *-/
 693     public void updateFileDetails(OCFile file, Account ocAccount) {
 694         mFile = file;
 695         if (ocAccount != null && (
 696                 mStorageManager == null ||
 697                 (mAccount != null && !mAccount.equals(ocAccount))
 698            )) {
 699             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 700         }
 701         mAccount = ocAccount;
 702         updateFileDetails(false);
 703     }
 704     */
 705
 706
 707     /**
 708      * Interface to implement by any Activity that includes some instance of FileDetailFragment
 709      *
 710      * @author David A. Velasco
 711      */
 712     public interface ContainerActivity extends TransferServiceGetter {
 713
 714         /**
 715          * Callback method invoked when the detail fragment wants to notice its container
 716          * activity about a relevant state the file shown by the fragment.
 717          *
 718          * Added to notify to FileDisplayActivity about the need of refresh the files list.
 719          *
 720          * Currently called when:
 721          *  - a download is started;
 722          *  - a rename is completed;
 723          *  - a deletion is completed;
 724          *  - the 'inSync' flag is changed;
 725          */
 726         public void onFileStateChanged();
 727
 728     }
 729
 730     /**
 731      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment} to be previewed.
 732      *
 733      * @param file      File to test if can be previewed.
 734      * @return          'True' if the file can be handled by the fragment.
 735      */
 736     public static boolean canBePreviewed(OCFile file) {
 737         return (file != null && (file.isAudio() || file.isVideo()));
 738     }
 739
 740     /**
 741      * {@inheritDoc}
 742      */
 743     @Override
 744     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 745         if (operation.equals(mLastRemoteOperation)) {
 746             if (operation instanceof RemoveFileOperation) {
 747                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 748             }
 749         }
 750     }
 751
 752     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 753         boolean inDisplayActivity = getActivity() instanceof FileDisplayActivity;
 754         getActivity().dismissDialog((inDisplayActivity)? FileDisplayActivity.DIALOG_SHORT_WAIT : FileDetailActivity.DIALOG_SHORT_WAIT);
 755
 756         if (result.isSuccess()) {
 757             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 758             msg.show();
 759             finish();
 760
 761         } else {
 762             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 763             msg.show();
 764             if (result.isSslRecoverableException()) {
 765                 // TODO show the SSL warning dialog
 766             }
 767         }
 768     }
 769
 770     private void stopPreview(boolean stopAudio) {
 771         if (mMediaController != null) {
 772             mMediaController.hide();
 773         }
 774         if (mFile.isAudio() && stopAudio) {
 775             mMediaServiceBinder.pause();
 776
 777         } else if (mFile.isVideo()) {
 778             mVideoPreview.stopPlayback();
 779         }
 780     }
 781
 782
 783
 784     /**
 785      * Finishes the preview
 786      */
 787     private void finish() {
 788         Activity container = getActivity();
 789         if (container instanceof FileDisplayActivity) {
 790             // double pane
 791             FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 792             transaction.replace(R.id.file_details_container, new FileDetailFragment(null, null), FileDetailFragment.FTAG); // empty FileDetailFragment
 793             transaction.commit();
 794             ((FileFragment.ContainerActivity)container).onFileStateChanged();
 795         } else {
 796             container.finish();
 797         }
 798     }
 799
 800 }