src/com/owncloud/android/ui/preview/PreviewImageFragment.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.lang.ref.WeakReference;
  21 import java.util.ArrayList;
  22 import java.util.List;
  23
  24
  25 import android.accounts.Account;
  26 import android.annotation.SuppressLint;
  27 import android.app.Activity;
  28 import android.content.ActivityNotFoundException;
  29 import android.content.Intent;
  30 import android.graphics.Bitmap;
  31 import android.graphics.BitmapFactory;
  32 import android.graphics.BitmapFactory.Options;
  33 import android.graphics.Point;
  34 import android.net.Uri;
  35 import android.os.AsyncTask;
  36 import android.os.Bundle;
  37 import android.os.Handler;
  38 import android.support.v4.app.FragmentStatePagerAdapter;
  39 import android.view.Display;
  40 import android.view.LayoutInflater;
  41 import android.view.View;
  42 import android.view.View.OnTouchListener;
  43 import android.view.ViewGroup;
  44 import android.webkit.MimeTypeMap;
  45 import android.widget.ImageView;
  46 import android.widget.ProgressBar;
  47 import android.widget.TextView;
  48 import android.widget.Toast;
  49
  50 import com.actionbarsherlock.app.SherlockFragment;
  51 import com.actionbarsherlock.view.Menu;
  52 import com.actionbarsherlock.view.MenuInflater;
  53 import com.actionbarsherlock.view.MenuItem;
  54 import com.owncloud.android.datamodel.FileDataStorageManager;
  55 import com.owncloud.android.datamodel.OCFile;
  56 import com.owncloud.android.operations.OnRemoteOperationListener;
  57 import com.owncloud.android.operations.RemoteOperation;
  58 import com.owncloud.android.operations.RemoteOperationResult;
  59 import com.owncloud.android.operations.RemoveFileOperation;
  60 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  61 import com.owncloud.android.ui.fragment.FileFragment;
  62
  63 import com.owncloud.android.Log_OC;
  64 import com.owncloud.android.R;
  65 import eu.alefzero.webdav.WebdavUtils;
  66
  67
  68 /**
  69  * This fragment shows a preview of a downloaded image.
  70  *
  71  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  72  *
  73  * If the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  74  *
  75  * @author David A. Velasco
  76  */
  77 public class PreviewImageFragment extends SherlockFragment implements   FileFragment,
  78                                                                         OnRemoteOperationListener,
  79                                                                         ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
  80     public static final String EXTRA_FILE = "FILE";
  81     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  82
  83     private View mView;
  84     private OCFile mFile;
  85     private Account mAccount;
  86     private FileDataStorageManager mStorageManager;
  87     private ImageView mImageView;
  88     private TextView mMessageView;
  89     private ProgressBar mProgressWheel;
  90
  91     public Bitmap mBitmap = null;
  92
  93     private Handler mHandler;
  94     private RemoteOperation mLastRemoteOperation;
  95
  96     private static final String TAG = PreviewImageFragment.class.getSimpleName();
  97
  98     private boolean mIgnoreFirstSavedState;
  99
 100
 101     /**
 102      * Creates a fragment to preview an image.
 103      *
 104      * When 'imageFile' or 'ocAccount' are null
 105      *
 106      * @param imageFile                 An {@link OCFile} to preview as an image in the fragment
 107      * @param ocAccount                 An ownCloud account; needed to start downloads
 108      * @param ignoreFirstSavedState     Flag to work around an unexpected behaviour of {@link FragmentStatePagerAdapter}; TODO better solution
 109      */
 110     public PreviewImageFragment(OCFile fileToDetail, Account ocAccount, boolean ignoreFirstSavedState) {
 111         mFile = fileToDetail;
 112         mAccount = ocAccount;
 113         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 114         mIgnoreFirstSavedState = ignoreFirstSavedState;
 115     }
 116
 117
 118     /**
 119      *  Creates an empty fragment for image previews.
 120      *
 121      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 122      *
 123      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 124      */
 125     public PreviewImageFragment() {
 126         mFile = null;
 127         mAccount = null;
 128         mStorageManager = null;
 129         mIgnoreFirstSavedState = false;
 130     }
 131
 132
 133     /**
 134      * {@inheritDoc}
 135      */
 136     @Override
 137     public void onCreate(Bundle savedInstanceState) {
 138         super.onCreate(savedInstanceState);
 139         mHandler = new Handler();
 140         setHasOptionsMenu(true);
 141     }
 142
 143
 144     /**
 145      * {@inheritDoc}
 146      */
 147     @Override
 148     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 149             Bundle savedInstanceState) {
 150         super.onCreateView(inflater, container, savedInstanceState);
 151         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
 152         mImageView = (ImageView)mView.findViewById(R.id.image);
 153         mImageView.setVisibility(View.GONE);
 154         mView.setOnTouchListener((OnTouchListener)getActivity());   // WATCH OUT THAT CAST
 155         mMessageView = (TextView)mView.findViewById(R.id.message);
 156         mMessageView.setVisibility(View.GONE);
 157         mProgressWheel = (ProgressBar)mView.findViewById(R.id.progressWheel);
 158         mProgressWheel.setVisibility(View.VISIBLE);
 159         return mView;
 160     }
 161
 162
 163     /**
 164      * {@inheritDoc}
 165      */
 166     @Override
 167     public void onAttach(Activity activity) {
 168         super.onAttach(activity);
 169         if (!(activity instanceof FileFragment.ContainerActivity))
 170             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 171     }
 172
 173
 174     /**
 175      * {@inheritDoc}
 176      */
 177     @Override
 178     public void onActivityCreated(Bundle savedInstanceState) {
 179         super.onActivityCreated(savedInstanceState);
 180         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 181         if (savedInstanceState != null) {
 182             if (!mIgnoreFirstSavedState) {
 183                 mFile = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
 184                 mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
 185             } else {
 186                 mIgnoreFirstSavedState = false;
 187             }
 188         }
 189         if (mFile == null) {
 190             throw new IllegalStateException("Instanced with a NULL OCFile");
 191         }
 192         if (mAccount == null) {
 193             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 194         }
 195         if (!mFile.isDown()) {
 196             throw new IllegalStateException("There is no local file to preview");
 197         }
 198     }
 199
 200
 201     /**
 202      * {@inheritDoc}
 203      */
 204     @Override
 205     public void onSaveInstanceState(Bundle outState) {
 206         super.onSaveInstanceState(outState);
 207         outState.putParcelable(PreviewImageFragment.EXTRA_FILE, mFile);
 208         outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
 209     }
 210
 211
 212     @Override
 213     public void onStart() {
 214         super.onStart();
 215         if (mFile != null) {
 216            BitmapLoader bl = new BitmapLoader(mImageView, mMessageView, mProgressWheel);
 217            bl.execute(new String[]{mFile.getStoragePath()});
 218         }
 219     }
 220
 221
 222     /**
 223      * {@inheritDoc}
 224      */
 225     @Override
 226     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 227         super.onCreateOptionsMenu(menu, inflater);
 228
 229         inflater.inflate(R.menu.file_actions_menu, menu);
 230         List<Integer> toHide = new ArrayList<Integer>();
 231
 232         MenuItem item = null;
 233         toHide.add(R.id.action_cancel_download);
 234         toHide.add(R.id.action_cancel_upload);
 235         toHide.add(R.id.action_download_file);
 236         toHide.add(R.id.action_rename_file);    // by now
 237
 238         for (int i : toHide) {
 239             item = menu.findItem(i);
 240             if (item != null) {
 241                 item.setVisible(false);
 242                 item.setEnabled(false);
 243             }
 244         }
 245
 246     }
 247
 248
 249     /**
 250      * {@inheritDoc}
 251      */
 252     @Override
 253     public boolean onOptionsItemSelected(MenuItem item) {
 254         switch (item.getItemId()) {
 255             case R.id.action_open_file_with: {
 256                 openFile();
 257                 return true;
 258             }
 259             case R.id.action_remove_file: {
 260                 removeFile();
 261                 return true;
 262             }
 263             case R.id.action_see_details: {
 264                 seeDetails();
 265                 return true;
 266             }
 267
 268             default:
 269                 return false;
 270         }
 271     }
 272
 273
 274     private void seeDetails() {
 275         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 276     }
 277
 278
 279     @Override
 280     public void onResume() {
 281         super.onResume();
 282         //Log.e(TAG, "FRAGMENT, ONRESUME");
 283         /*
 284         mDownloadFinishReceiver = new DownloadFinishReceiver();
 285         IntentFilter filter = new IntentFilter(
 286                 FileDownloader.DOWNLOAD_FINISH_MESSAGE);
 287         getActivity().registerReceiver(mDownloadFinishReceiver, filter);
 288
 289         mUploadFinishReceiver = new UploadFinishReceiver();
 290         filter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
 291         getActivity().registerReceiver(mUploadFinishReceiver, filter);
 292         */
 293
 294     }
 295
 296
 297     @Override
 298     public void onPause() {
 299         super.onPause();
 300         /*
 301         if (mVideoPreview.getVisibility() == View.VISIBLE) {
 302             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 303         }*/
 304         /*
 305         getActivity().unregisterReceiver(mDownloadFinishReceiver);
 306         mDownloadFinishReceiver = null;
 307
 308         getActivity().unregisterReceiver(mUploadFinishReceiver);
 309         mUploadFinishReceiver = null;
 310         */
 311     }
 312
 313
 314     @Override
 315     public void onDestroy() {
 316         super.onDestroy();
 317         if (mBitmap != null) {
 318             mBitmap.recycle();
 319         }
 320     }
 321
 322
 323     /**
 324      * Opens the previewed image with an external application.
 325      *
 326      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 327      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 328      * available apps for the MIME type known from the file extension, to let the user choose
 329      */
 330     private void openFile() {
 331         String storagePath = mFile.getStoragePath();
 332         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 333         try {
 334             Intent i = new Intent(Intent.ACTION_VIEW);
 335             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 336             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 337             startActivity(i);
 338
 339         } catch (Throwable t) {
 340             Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 341             boolean toastIt = true;
 342             String mimeType = "";
 343             try {
 344                 Intent i = new Intent(Intent.ACTION_VIEW);
 345                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 346                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 347                     if (mimeType != null) {
 348                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 349                     } else {
 350                         // desperate try
 351                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 352                     }
 353                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 354                     startActivity(i);
 355                     toastIt = false;
 356                 }
 357
 358             } catch (IndexOutOfBoundsException e) {
 359                 Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 360
 361             } catch (ActivityNotFoundException e) {
 362                 Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 363
 364             } catch (Throwable th) {
 365                 Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 366
 367             } finally {
 368                 if (toastIt) {
 369                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 370                 }
 371             }
 372
 373         }
 374         finish();
 375     }
 376
 377
 378     /**
 379      * Starts a the removal of the previewed file.
 380      *
 381      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 382      * depending upon the user selection in the dialog.
 383      */
 384     private void removeFile() {
 385         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 386                 R.string.confirmation_remove_alert,
 387                 new String[]{mFile.getFileName()},
 388                 R.string.confirmation_remove_remote_and_local,
 389                 R.string.confirmation_remove_local,
 390                 R.string.common_cancel);
 391         confDialog.setOnConfirmationListener(this);
 392         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 393     }
 394
 395
 396     /**
 397      * Performs the removal of the previewed file, both locally and in the server.
 398      */
 399     @Override
 400     public void onConfirmation(String callerTag) {
 401         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 402             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 403                                                             true,
 404                                                             mStorageManager);
 405             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 406
 407             getActivity().showDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
 408         }
 409     }
 410
 411
 412     /**
 413      * Removes the file from local storage
 414      */
 415     @Override
 416     public void onNeutral(String callerTag) {
 417         // TODO this code should be made in a secondary thread,
 418         if (mFile.isDown()) {   // checks it is still there
 419             File f = new File(mFile.getStoragePath());
 420             f.delete();
 421             mFile.setStoragePath(null);
 422             mStorageManager.saveFile(mFile);
 423             finish();
 424         }
 425     }
 426
 427     /**
 428      * User cancelled the removal action.
 429      */
 430     @Override
 431     public void onCancel(String callerTag) {
 432         // nothing to do here
 433     }
 434
 435
 436     /**
 437      * {@inheritDoc}
 438      */
 439     public OCFile getFile(){
 440         return mFile;
 441     }
 442
 443     /*
 444     /**
 445      * Use this method to signal this Activity that it shall update its view.
 446      *
 447      * @param file : An {@link OCFile}
 448      *-/
 449     public void updateFileDetails(OCFile file, Account ocAccount) {
 450         mFile = file;
 451         if (ocAccount != null && (
 452                 mStorageManager == null ||
 453                 (mAccount != null && !mAccount.equals(ocAccount))
 454            )) {
 455             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 456         }
 457         mAccount = ocAccount;
 458         updateFileDetails(false);
 459     }
 460     */
 461
 462
 463     private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
 464
 465         /**
 466          * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
 467          *
 468          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 469          */
 470         private final WeakReference<ImageView> mImageViewRef;
 471
 472         /**
 473          * Weak reference to the target {@link TextView} where error messages will be written.
 474          *
 475          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 476          */
 477         private final WeakReference<TextView> mMessageViewRef;
 478
 479
 480         /**
 481          * Weak reference to the target {@link Progressbar} shown while the load is in progress.
 482          *
 483          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 484          */
 485         private final WeakReference<ProgressBar> mProgressWheelRef;
 486
 487
 488         /**
 489          * Error message to show when a load fails
 490          */
 491         private int mErrorMessageId;
 492
 493
 494         /**
 495          * Constructor.
 496          *
 497          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
 498          */
 499         public BitmapLoader(ImageView imageView, TextView messageView, ProgressBar progressWheel) {
 500             mImageViewRef = new WeakReference<ImageView>(imageView);
 501             mMessageViewRef = new WeakReference<TextView>(messageView);
 502             mProgressWheelRef = new WeakReference<ProgressBar>(progressWheel);
 503         }
 504
 505
 506         @SuppressWarnings("deprecation")
 507         @SuppressLint({ "NewApi", "NewApi", "NewApi" }) // to avoid Lint errors since Android SDK r20
 508                 @Override
 509         protected Bitmap doInBackground(String... params) {
 510             Bitmap result = null;
 511             if (params.length != 1) return result;
 512             String storagePath = params[0];
 513             try {
 514                 // set desired options that will affect the size of the bitmap
 515                 BitmapFactory.Options options = new Options();
 516                 options.inScaled = true;
 517                 options.inPurgeable = true;
 518                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
 519                     options.inPreferQualityOverSpeed = false;
 520                 }
 521                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
 522                     options.inMutable = false;
 523                 }
 524                 // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
 525                 options.inJustDecodeBounds = true;
 526                 BitmapFactory.decodeFile(storagePath, options);
 527
 528                 int width = options.outWidth;
 529                 int height = options.outHeight;
 530                 int scale = 1;
 531
 532                 Display display = getActivity().getWindowManager().getDefaultDisplay();
 533                 Point size = new Point();
 534                 int screenWidth;
 535                 int screenHeight;
 536                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
 537                     display.getSize(size);
 538                     screenWidth = size.x;
 539                     screenHeight = size.y;
 540                 } else {
 541                     screenWidth = display.getWidth();
 542                     screenHeight = display.getHeight();
 543                 }
 544
 545                 if (width > screenWidth) {
 546                     // second try to scale down the image , this time depending upon the screen size
 547                     scale = (int) Math.floor((float)width / screenWidth);
 548                 }
 549                 if (height > screenHeight) {
 550                     scale = Math.max(scale, (int) Math.floor((float)height / screenHeight));
 551                 }
 552                 options.inSampleSize = scale;
 553
 554                 // really load the bitmap
 555                 options.inJustDecodeBounds = false; // the next decodeFile call will be real
 556                 result = BitmapFactory.decodeFile(storagePath, options);
 557                 //Log_OC.d(TAG, "Image loaded - width: " + options.outWidth + ", loaded height: " + options.outHeight);
 558
 559                 if (result == null) {
 560                     mErrorMessageId = R.string.preview_image_error_unknown_format;
 561                     Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);
 562                 }
 563
 564             } catch (OutOfMemoryError e) {
 565                 mErrorMessageId = R.string.preview_image_error_unknown_format;
 566                 Log_OC.e(TAG, "Out of memory occured for file " + storagePath, e);
 567
 568             } catch (NoSuchFieldError e) {
 569                 mErrorMessageId = R.string.common_error_unknown;
 570                 Log_OC.e(TAG, "Error from access to unexisting field despite protection; file " + storagePath, e);
 571
 572             } catch (Throwable t) {
 573                 mErrorMessageId = R.string.common_error_unknown;
 574                 Log_OC.e(TAG, "Unexpected error loading " + mFile.getStoragePath(), t);
 575
 576             }
 577             return result;
 578         }
 579
 580         @Override
 581         protected void onPostExecute(Bitmap result) {
 582             hideProgressWheel();
 583             if (result != null) {
 584                 showLoadedImage(result);
 585             } else {
 586                 showErrorMessage();
 587             }
 588         }
 589
 590         private void showLoadedImage(Bitmap result) {
 591             if (mImageViewRef != null) {
 592                 final ImageView imageView = mImageViewRef.get();
 593                 if (imageView != null) {
 594                     imageView.setImageBitmap(result);
 595                     imageView.setVisibility(View.VISIBLE);
 596                     mBitmap  = result;
 597                 } // else , silently finish, the fragment was destroyed
 598             }
 599             if (mMessageViewRef != null) {
 600                 final TextView messageView = mMessageViewRef.get();
 601                 if (messageView != null) {
 602                     messageView.setVisibility(View.GONE);
 603                 } // else , silently finish, the fragment was destroyed
 604             }
 605         }
 606
 607         private void showErrorMessage() {
 608             if (mImageViewRef != null) {
 609                 final ImageView imageView = mImageViewRef.get();
 610                 if (imageView != null) {
 611                     // shows the default error icon
 612                     imageView.setVisibility(View.VISIBLE);
 613                 } // else , silently finish, the fragment was destroyed
 614             }
 615             if (mMessageViewRef != null) {
 616                 final TextView messageView = mMessageViewRef.get();
 617                 if (messageView != null) {
 618                     messageView.setText(mErrorMessageId);
 619                     messageView.setVisibility(View.VISIBLE);
 620                 } // else , silently finish, the fragment was destroyed
 621             }
 622         }
 623
 624         private void hideProgressWheel() {
 625             if (mProgressWheelRef != null) {
 626                 final ProgressBar progressWheel = mProgressWheelRef.get();
 627                 if (progressWheel != null) {
 628                     progressWheel.setVisibility(View.GONE);
 629                 }
 630             }
 631         }
 632
 633     }
 634
 635     /**
 636      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewImageFragment} to be previewed.
 637      *
 638      * @param file      File to test if can be previewed.
 639      * @return          'True' if the file can be handled by the fragment.
 640      */
 641     public static boolean canBePreviewed(OCFile file) {
 642         return (file != null && file.isImage());
 643     }
 644
 645
 646     /**
 647      * {@inheritDoc}
 648      */
 649     @Override
 650     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 651         if (operation.equals(mLastRemoteOperation) && operation instanceof RemoveFileOperation) {
 652             onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 653         }
 654     }
 655
 656     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 657         getActivity().dismissDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
 658
 659         if (result.isSuccess()) {
 660             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 661             msg.show();
 662             finish();
 663
 664         } else {
 665             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 666             msg.show();
 667             if (result.isSslRecoverableException()) {
 668                 // TODO show the SSL warning dialog
 669             }
 670         }
 671     }
 672
 673     /**
 674      * Finishes the preview
 675      */
 676     private void finish() {
 677         Activity container = getActivity();
 678         container.finish();
 679     }
 680
 681
 682 }