src/com/owncloud/android/ui/fragment/FileDetailFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   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.fragment;
  19
  20 import java.io.File;
  21 import java.lang.ref.WeakReference;
  22 import java.util.ArrayList;
  23 import java.util.List;
  24
  25 import android.accounts.Account;
  26 import android.app.Activity;
  27 import android.content.BroadcastReceiver;
  28 import android.content.Context;
  29 import android.content.Intent;
  30 import android.content.IntentFilter;
  31 import android.os.Bundle;
  32 import android.os.Handler;
  33 import android.view.LayoutInflater;
  34 import android.view.View;
  35 import android.view.View.OnClickListener;
  36 import android.view.ViewGroup;
  37 import android.widget.CheckBox;
  38 import android.widget.ImageView;
  39 import android.widget.ProgressBar;
  40 import android.widget.TextView;
  41 import android.widget.Toast;
  42
  43 import com.actionbarsherlock.view.Menu;
  44 import com.actionbarsherlock.view.MenuInflater;
  45 import com.actionbarsherlock.view.MenuItem;
  46 import com.owncloud.android.R;
  47 import com.owncloud.android.datamodel.FileDataStorageManager;
  48 import com.owncloud.android.datamodel.OCFile;
  49 import com.owncloud.android.files.services.FileObserverService;
  50 import com.owncloud.android.files.services.FileUploader;
  51 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  52 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  53 import com.owncloud.android.lib.network.OnDatatransferProgressListener;
  54 import com.owncloud.android.lib.operations.common.OnRemoteOperationListener;
  55 import com.owncloud.android.lib.operations.common.RemoteOperation;
  56 import com.owncloud.android.lib.operations.common.RemoteOperationResult;
  57 import com.owncloud.android.lib.operations.common.RemoteOperationResult.ResultCode;
  58 import com.owncloud.android.operations.RemoveFileOperation;
  59 import com.owncloud.android.operations.RenameFileOperation;
  60 import com.owncloud.android.operations.SynchronizeFileOperation;
  61 import com.owncloud.android.ui.activity.ConflictsResolveActivity;
  62 import com.owncloud.android.ui.activity.FileActivity;
  63 import com.owncloud.android.ui.activity.FileDisplayActivity;
  64 import com.owncloud.android.ui.dialog.EditNameDialog;
  65 import com.owncloud.android.ui.dialog.EditNameDialog.EditNameDialogListener;
  66 import com.owncloud.android.ui.preview.PreviewImageFragment;
  67 import com.owncloud.android.utils.DisplayUtils;
  68 import com.owncloud.android.utils.Log_OC;
  69
  70
  71 /**
  72  * This Fragment is used to display the details about a file.
  73  *
  74  * @author Bartek Przybylski
  75  * @author David A. Velasco
  76  */
  77 public class FileDetailFragment extends FileFragment implements
  78         OnClickListener,
  79         ConfirmationDialogFragment.ConfirmationDialogFragmentListener, OnRemoteOperationListener, EditNameDialogListener {
  80
  81     private FileFragment.ContainerActivity mContainerActivity;
  82
  83     private int mLayout;
  84     private View mView;
  85     private Account mAccount;
  86     private FileDataStorageManager mStorageManager;
  87
  88     private UploadFinishReceiver mUploadFinishReceiver;
  89     public ProgressListener mProgressListener;
  90
  91     private Handler mHandler;
  92     private RemoteOperation mLastRemoteOperation;
  93
  94     private static final String TAG = FileDetailFragment.class.getSimpleName();
  95     public static final String FTAG_CONFIRMATION = "REMOVE_CONFIRMATION_FRAGMENT";
  96
  97
  98     /**
  99      * Creates an empty details fragment.
 100      *
 101      * It's necessary to keep a public constructor without parameters; the system uses it when tries to reinstantiate a fragment automatically.
 102      */
 103     public FileDetailFragment() {
 104         super();
 105         mAccount = null;
 106         mStorageManager = null;
 107         mLayout = R.layout.file_details_empty;
 108         mProgressListener = null;
 109     }
 110
 111     /**
 112      * Creates a details fragment.
 113      *
 114      * When 'fileToDetail' or 'ocAccount' are null, creates a dummy layout (to use when a file wasn't tapped before).
 115      *
 116      * @param fileToDetail      An {@link OCFile} to show in the fragment
 117      * @param ocAccount         An ownCloud account; needed to start downloads
 118      */
 119     public FileDetailFragment(OCFile fileToDetail, Account ocAccount) {
 120         super(fileToDetail);
 121         mAccount = ocAccount;
 122         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 123         mLayout = R.layout.file_details_empty;
 124         mProgressListener = null;
 125     }
 126
 127
 128     @Override
 129     public void onCreate(Bundle savedInstanceState) {
 130         super.onCreate(savedInstanceState);
 131         mHandler = new Handler();
 132         setHasOptionsMenu(true);
 133     }
 134
 135
 136     @Override
 137     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 138             Bundle savedInstanceState) {
 139         //super.onCreateView(inflater, container, savedInstanceState);
 140
 141         if (savedInstanceState != null) {
 142             setFile((OCFile)savedInstanceState.getParcelable(FileActivity.EXTRA_FILE));
 143             mAccount = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
 144         }
 145
 146         if(getFile() != null && mAccount != null) {
 147             mLayout = R.layout.file_details_fragment;
 148         }
 149
 150         View view = null;
 151         //view = inflater.inflate(mLayout, container, false);
 152         view = inflater.inflate(mLayout, null);
 153         mView = view;
 154
 155         if (mLayout == R.layout.file_details_fragment) {
 156             mView.findViewById(R.id.fdKeepInSync).setOnClickListener(this);
 157             ProgressBar progressBar = (ProgressBar)mView.findViewById(R.id.fdProgressBar);
 158             mProgressListener = new ProgressListener(progressBar);
 159             mView.findViewById(R.id.fdCancelBtn).setOnClickListener(this);
 160         }
 161
 162         updateFileDetails(false, false);
 163         return view;
 164     }
 165
 166     /**
 167      * {@inheritDoc}
 168      */
 169     @Override
 170     public void onAttach(Activity activity) {
 171         super.onAttach(activity);
 172         try {
 173             mContainerActivity = (ContainerActivity) activity;
 174
 175         } catch (ClassCastException e) {
 176             throw new ClassCastException(activity.toString() + " must implement " + FileDetailFragment.ContainerActivity.class.getSimpleName());
 177         }
 178     }
 179
 180
 181     /**
 182      * {@inheritDoc}
 183      */
 184     @Override
 185     public void onActivityCreated(Bundle savedInstanceState) {
 186         super.onActivityCreated(savedInstanceState);
 187         if (mAccount != null) {
 188             mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 189         }
 190     }
 191
 192
 193     @Override
 194     public void onSaveInstanceState(Bundle outState) {
 195         super.onSaveInstanceState(outState);
 196         outState.putParcelable(FileActivity.EXTRA_FILE, getFile());
 197         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 198     }
 199
 200     @Override
 201     public void onStart() {
 202         super.onStart();
 203         listenForTransferProgress();
 204     }
 205
 206     @Override
 207     public void onResume() {
 208         super.onResume();
 209         mUploadFinishReceiver = new UploadFinishReceiver();
 210         IntentFilter filter = new IntentFilter(FileUploader.getUploadFinishMessage());
 211         getActivity().registerReceiver(mUploadFinishReceiver, filter);
 212
 213     }
 214
 215
 216     @Override
 217     public void onPause() {
 218         super.onPause();
 219         if (mUploadFinishReceiver != null) {
 220             getActivity().unregisterReceiver(mUploadFinishReceiver);
 221             mUploadFinishReceiver = null;
 222         }
 223     }
 224
 225
 226     @Override
 227     public void onStop() {
 228         super.onStop();
 229         leaveTransferProgress();
 230     }
 231
 232
 233     @Override
 234     public View getView() {
 235         return super.getView() == null ? mView : super.getView();
 236     }
 237
 238
 239     /**
 240      * {@inheritDoc}
 241      */
 242     @Override
 243     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 244         super.onCreateOptionsMenu(menu, inflater);
 245         inflater.inflate(R.menu.file_actions_menu, menu);
 246         MenuItem item = menu.findItem(R.id.action_see_details);
 247         if (item != null) {
 248             item.setVisible(false);
 249             item.setEnabled(false);
 250         }
 251     }
 252
 253
 254     /**
 255      * {@inheritDoc}
 256      */
 257     @Override
 258     public void onPrepareOptionsMenu (Menu menu) {
 259         super.onPrepareOptionsMenu(menu);
 260
 261         List<Integer> toHide = new ArrayList<Integer>();
 262         List<Integer> toShow = new ArrayList<Integer>();
 263         OCFile file = getFile();
 264
 265         FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 266         boolean downloading = downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file);
 267         FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 268         boolean uploading = uploaderBinder != null && uploaderBinder.isUploading(mAccount, getFile());
 269
 270         if (downloading || uploading) {
 271             toHide.add(R.id.action_download_file);
 272             toHide.add(R.id.action_rename_file);
 273             toHide.add(R.id.action_remove_file);
 274             toHide.add(R.id.action_open_file_with);
 275             if (!downloading) {
 276                 toHide.add(R.id.action_cancel_download);
 277                 toShow.add(R.id.action_cancel_upload);
 278             } else {
 279                 toHide.add(R.id.action_cancel_upload);
 280                 toShow.add(R.id.action_cancel_download);
 281             }
 282
 283         } else if (file != null && file.isDown()) {
 284             toHide.add(R.id.action_download_file);
 285             toHide.add(R.id.action_cancel_download);
 286             toHide.add(R.id.action_cancel_upload);
 287
 288             toShow.add(R.id.action_rename_file);
 289             toShow.add(R.id.action_remove_file);
 290             toShow.add(R.id.action_open_file_with);
 291             toShow.add(R.id.action_sync_file);
 292
 293         } else if (file != null) {
 294             toHide.add(R.id.action_open_file_with);
 295             toHide.add(R.id.action_cancel_download);
 296             toHide.add(R.id.action_cancel_upload);
 297             toHide.add(R.id.action_sync_file);
 298
 299             toShow.add(R.id.action_rename_file);
 300             toShow.add(R.id.action_remove_file);
 301             toShow.add(R.id.action_download_file);
 302
 303         } else {
 304             toHide.add(R.id.action_open_file_with);
 305             toHide.add(R.id.action_cancel_download);
 306             toHide.add(R.id.action_cancel_upload);
 307             toHide.add(R.id.action_sync_file);
 308             toHide.add(R.id.action_download_file);
 309             toHide.add(R.id.action_rename_file);
 310             toHide.add(R.id.action_remove_file);
 311
 312         }
 313
 314         // Options shareLink
 315         if (!file.isShareByLink()) {
 316             toHide.add(R.id.action_unshare_file);
 317         }
 318
 319         MenuItem item = null;
 320         for (int i : toHide) {
 321             item = menu.findItem(i);
 322             if (item != null) {
 323                 item.setVisible(false);
 324                 item.setEnabled(false);
 325             }
 326         }
 327         for (int i : toShow) {
 328             item = menu.findItem(i);
 329             if (item != null) {
 330                 item.setVisible(true);
 331                 item.setEnabled(true);
 332             }
 333         }
 334     }
 335
 336
 337     /**
 338      * {@inheritDoc}
 339      */
 340     @Override
 341     public boolean onOptionsItemSelected(MenuItem item) {
 342         switch (item.getItemId()) {
 343             case R.id.action_open_file_with: {
 344                 mContainerActivity.openFile(getFile());
 345                 return true;
 346             }
 347             case R.id.action_remove_file: {
 348                 removeFile();
 349                 return true;
 350             }
 351             case R.id.action_rename_file: {
 352                 renameFile();
 353                 return true;
 354             }
 355             case R.id.action_download_file:
 356             case R.id.action_cancel_download:
 357             case R.id.action_cancel_upload:
 358             case R.id.action_sync_file: {
 359                 synchronizeFile();
 360                 return true;
 361             }
 362             default:
 363                 return false;
 364         }
 365     }
 366
 367     @Override
 368     public void onClick(View v) {
 369         switch (v.getId()) {
 370             case R.id.fdKeepInSync: {
 371                 toggleKeepInSync();
 372                 break;
 373             }
 374             case R.id.fdCancelBtn: {
 375                 synchronizeFile();
 376                 break;
 377             }
 378             default:
 379                 Log_OC.e(TAG, "Incorrect view clicked!");
 380         }
 381     }
 382
 383
 384     private void toggleKeepInSync() {
 385         CheckBox cb = (CheckBox) getView().findViewById(R.id.fdKeepInSync);
 386         OCFile file = getFile();
 387         file.setKeepInSync(cb.isChecked());
 388         mStorageManager.saveFile(file);
 389
 390         /// register the OCFile instance in the observer service to monitor local updates;
 391         /// if necessary, the file is download
 392         Intent intent = new Intent(getActivity().getApplicationContext(),
 393                                    FileObserverService.class);
 394         intent.putExtra(FileObserverService.KEY_FILE_CMD,
 395                    (cb.isChecked()?
 396                            FileObserverService.CMD_ADD_OBSERVED_FILE:
 397                            FileObserverService.CMD_DEL_OBSERVED_FILE));
 398         intent.putExtra(FileObserverService.KEY_CMD_ARG_FILE, file);
 399         intent.putExtra(FileObserverService.KEY_CMD_ARG_ACCOUNT, mAccount);
 400         getActivity().startService(intent);
 401
 402         if (file.keepInSync()) {
 403             synchronizeFile();   // force an immediate synchronization
 404         }
 405     }
 406
 407
 408     private void removeFile() {
 409         OCFile file = getFile();
 410         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 411                 R.string.confirmation_remove_alert,
 412                 new String[]{file.getFileName()},
 413                 file.isDown() ? R.string.confirmation_remove_remote_and_local : R.string.confirmation_remove_remote,
 414                 file.isDown() ? R.string.confirmation_remove_local : -1,
 415                 R.string.common_cancel);
 416         confDialog.setOnConfirmationListener(this);
 417         confDialog.show(getFragmentManager(), FTAG_CONFIRMATION);
 418     }
 419
 420
 421     private void renameFile() {
 422         OCFile file = getFile();
 423         String fileName = file.getFileName();
 424         int extensionStart = file.isFolder() ? -1 : fileName.lastIndexOf(".");
 425         int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 426         EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 427         dialog.show(getFragmentManager(), "nameeditdialog");
 428     }
 429
 430     private void synchronizeFile() {
 431         OCFile file = getFile();
 432         FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 433         FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 434         if (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file)) {
 435             downloaderBinder.cancel(mAccount, file);
 436             if (file.isDown()) {
 437                 setButtonsForDown();
 438             } else {
 439                 setButtonsForRemote();
 440             }
 441
 442         } else if (uploaderBinder != null && uploaderBinder.isUploading(mAccount, file)) {
 443             uploaderBinder.cancel(mAccount, file);
 444             if (!file.fileExists()) {
 445                 // TODO make something better
 446                 ((FileDisplayActivity)getActivity()).cleanSecondFragment();
 447
 448             } else if (file.isDown()) {
 449                 setButtonsForDown();
 450             } else {
 451                 setButtonsForRemote();
 452             }
 453
 454         } else {
 455             mLastRemoteOperation = new SynchronizeFileOperation(file, null, mStorageManager, mAccount, true, getActivity());
 456             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 457
 458             // update ui
 459             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 460
 461         }
 462     }
 463
 464     @Override
 465     public void onConfirmation(String callerTag) {
 466         OCFile file = getFile();
 467         if (callerTag.equals(FTAG_CONFIRMATION)) {
 468             if (mStorageManager.getFileById(file.getFileId()) != null) {
 469                 mLastRemoteOperation = new RemoveFileOperation( file,
 470                                                                 true,
 471                                                                 mStorageManager);
 472                 mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 473
 474                 ((FileDisplayActivity) getActivity()).showLoadingDialog();
 475             }
 476         }
 477     }
 478
 479     @Override
 480     public void onNeutral(String callerTag) {
 481         OCFile file = getFile();
 482         mStorageManager.removeFile(file, false, true);    // TODO perform in background task / new thread
 483         if (file.getStoragePath() != null) {
 484             file.setStoragePath(null);
 485             updateFileDetails(file, mAccount);
 486         }
 487     }
 488
 489     @Override
 490     public void onCancel(String callerTag) {
 491         Log_OC.d(TAG, "REMOVAL CANCELED");
 492     }
 493
 494
 495     /**
 496      * Check if the fragment was created with an empty layout. An empty fragment can't show file details, must be replaced.
 497      *
 498      * @return  True when the fragment was created with the empty layout.
 499      */
 500     public boolean isEmpty() {
 501         return (mLayout == R.layout.file_details_empty || getFile() == null || mAccount == null);
 502     }
 503
 504
 505     /**
 506      * Use this method to signal this Activity that it shall update its view.
 507      *
 508      * @param file : An {@link OCFile}
 509      */
 510     public void updateFileDetails(OCFile file, Account ocAccount) {
 511         setFile(file);
 512         if (ocAccount != null && (
 513                 mStorageManager == null ||
 514                 (mAccount != null && !mAccount.equals(ocAccount))
 515            )) {
 516             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 517         }
 518         mAccount = ocAccount;
 519         updateFileDetails(false, false);
 520     }
 521
 522     /**
 523      * Updates the view with all relevant details about that file.
 524      *
 525      * TODO Remove parameter when the transferring state of files is kept in database.
 526      *
 527      * TODO REFACTORING! this method called 5 times before every time the fragment is shown!
 528      *
 529      * @param transferring      Flag signaling if the file should be considered as downloading or uploading,
 530      *                          although {@link FileDownloaderBinder#isDownloading(Account, OCFile)}  and
 531      *                          {@link FileUploaderBinder#isUploading(Account, OCFile)} return false.
 532      *
 533      * @param refresh           If 'true', try to refresh the hold file from the database
 534      */
 535     public void updateFileDetails(boolean transferring, boolean refresh) {
 536
 537         if (readyToShow()) {
 538
 539             if (refresh && mStorageManager != null) {
 540                 setFile(mStorageManager.getFileByPath(getFile().getRemotePath()));
 541             }
 542             OCFile file = getFile();
 543
 544             // set file details
 545             setFilename(file.getFileName());
 546             setFiletype(file.getMimetype());
 547             setFilesize(file.getFileLength());
 548             if(ocVersionSupportsTimeCreated()){
 549                 setTimeCreated(file.getCreationTimestamp());
 550             }
 551
 552             setTimeModified(file.getModificationTimestamp());
 553
 554             CheckBox cb = (CheckBox)getView().findViewById(R.id.fdKeepInSync);
 555             cb.setChecked(file.keepInSync());
 556
 557             // configure UI for depending upon local state of the file
 558             //if (FileDownloader.isDownloading(mAccount, mFile.getRemotePath()) || FileUploader.isUploading(mAccount, mFile.getRemotePath())) {
 559             FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 560             FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 561             if (transferring || (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file)) || (uploaderBinder != null && uploaderBinder.isUploading(mAccount, file))) {
 562                 setButtonsForTransferring();
 563
 564             } else if (file.isDown()) {
 565
 566                 setButtonsForDown();
 567
 568             } else {
 569                 // TODO load default preview image; when the local file is removed, the preview remains there
 570                 setButtonsForRemote();
 571             }
 572         }
 573         getView().invalidate();
 574     }
 575
 576     /**
 577      * Checks if the fragment is ready to show details of a OCFile
 578      *
 579      * @return  'True' when the fragment is ready to show details of a file
 580      */
 581     private boolean readyToShow() {
 582         return (getFile() != null && mAccount != null && mLayout == R.layout.file_details_fragment);
 583     }
 584
 585
 586     /**
 587      * Updates the filename in view
 588      * @param filename to set
 589      */
 590     private void setFilename(String filename) {
 591         TextView tv = (TextView) getView().findViewById(R.id.fdFilename);
 592         if (tv != null)
 593             tv.setText(filename);
 594     }
 595
 596     /**
 597      * Updates the MIME type in view
 598      * @param mimetype to set
 599      */
 600     private void setFiletype(String mimetype) {
 601         TextView tv = (TextView) getView().findViewById(R.id.fdType);
 602         if (tv != null) {
 603             String printableMimetype = DisplayUtils.convertMIMEtoPrettyPrint(mimetype);;
 604             tv.setText(printableMimetype);
 605         }
 606         ImageView iv = (ImageView) getView().findViewById(R.id.fdIcon);
 607         if (iv != null) {
 608             iv.setImageResource(DisplayUtils.getResourceId(mimetype));
 609         }
 610     }
 611
 612     /**
 613      * Updates the file size in view
 614      * @param filesize in bytes to set
 615      */
 616     private void setFilesize(long filesize) {
 617         TextView tv = (TextView) getView().findViewById(R.id.fdSize);
 618         if (tv != null)
 619             tv.setText(DisplayUtils.bytesToHumanReadable(filesize));
 620     }
 621
 622     /**
 623      * Updates the time that the file was created in view
 624      * @param milliseconds Unix time to set
 625      */
 626     private void setTimeCreated(long milliseconds){
 627         TextView tv = (TextView) getView().findViewById(R.id.fdCreated);
 628         TextView tvLabel = (TextView) getView().findViewById(R.id.fdCreatedLabel);
 629         if(tv != null){
 630             tv.setText(DisplayUtils.unixTimeToHumanReadable(milliseconds));
 631             tv.setVisibility(View.VISIBLE);
 632             tvLabel.setVisibility(View.VISIBLE);
 633         }
 634     }
 635
 636     /**
 637      * Updates the time that the file was last modified
 638      * @param milliseconds Unix time to set
 639      */
 640     private void setTimeModified(long milliseconds){
 641         TextView tv = (TextView) getView().findViewById(R.id.fdModified);
 642         if(tv != null){
 643             tv.setText(DisplayUtils.unixTimeToHumanReadable(milliseconds));
 644         }
 645     }
 646
 647     /**
 648      * Enables or disables buttons for a file being downloaded
 649      */
 650     private void setButtonsForTransferring() {
 651         if (!isEmpty()) {
 652             // let's protect the user from himself ;)
 653             getView().findViewById(R.id.fdKeepInSync).setEnabled(false);
 654
 655             // show the progress bar for the transfer
 656             getView().findViewById(R.id.fdProgressBlock).setVisibility(View.VISIBLE);
 657             TextView progressText = (TextView)getView().findViewById(R.id.fdProgressText);
 658             progressText.setVisibility(View.VISIBLE);
 659             FileDownloaderBinder downloaderBinder = mContainerActivity.getFileDownloaderBinder();
 660             FileUploaderBinder uploaderBinder = mContainerActivity.getFileUploaderBinder();
 661             if (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, getFile())) {
 662                 progressText.setText(R.string.downloader_download_in_progress_ticker);
 663             } else if (uploaderBinder != null && uploaderBinder.isUploading(mAccount, getFile())) {
 664                 progressText.setText(R.string.uploader_upload_in_progress_ticker);
 665             }
 666         }
 667     }
 668
 669     /**
 670      * Enables or disables buttons for a file locally available
 671      */
 672     private void setButtonsForDown() {
 673         if (!isEmpty()) {
 674             getView().findViewById(R.id.fdKeepInSync).setEnabled(true);
 675
 676             // hides the progress bar
 677             getView().findViewById(R.id.fdProgressBlock).setVisibility(View.GONE);
 678             TextView progressText = (TextView)getView().findViewById(R.id.fdProgressText);
 679             progressText.setVisibility(View.GONE);
 680         }
 681     }
 682
 683     /**
 684      * Enables or disables buttons for a file not locally available
 685      */
 686     private void setButtonsForRemote() {
 687         if (!isEmpty()) {
 688             getView().findViewById(R.id.fdKeepInSync).setEnabled(true);
 689
 690             // hides the progress bar
 691             getView().findViewById(R.id.fdProgressBlock).setVisibility(View.GONE);
 692             TextView progressText = (TextView)getView().findViewById(R.id.fdProgressText);
 693             progressText.setVisibility(View.GONE);
 694         }
 695     }
 696
 697
 698     /**
 699      * In ownCloud 3.X.X and 4.X.X there is a bug that SabreDAV does not return
 700      * the time that the file was created. There is a chance that this will
 701      * be fixed in future versions. Use this method to check if this version of
 702      * ownCloud has this fix.
 703      * @return True, if ownCloud the ownCloud version is supporting creation time
 704      */
 705     private boolean ocVersionSupportsTimeCreated(){
 706         /*if(mAccount != null){
 707             AccountManager accManager = (AccountManager) getActivity().getSystemService(Context.ACCOUNT_SERVICE);
 708             OwnCloudVersion ocVersion = new OwnCloudVersion(accManager
 709                     .getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION));
 710             if(ocVersion.compareTo(new OwnCloudVersion(0x030000)) < 0) {
 711                 return true;
 712             }
 713         }*/
 714         return false;
 715     }
 716
 717
 718     /**
 719      * Once the file upload has finished -> update view
 720      *
 721      * Being notified about the finish of an upload is necessary for the next sequence:
 722      *   1. Upload a big file.
 723      *   2. Force a synchronization; if it finished before the upload, the file in transfer will be included in the local database and in the file list
 724      *      of its containing folder; the the server includes it in the PROPFIND requests although it's not fully upload.
 725      *   3. Click the file in the list to see its details.
 726      *   4. Wait for the upload finishes; at this moment, the details view must be refreshed to enable the action buttons.
 727      */
 728     private class UploadFinishReceiver extends BroadcastReceiver {
 729         @Override
 730         public void onReceive(Context context, Intent intent) {
 731             String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
 732
 733             if (!isEmpty() && accountName.equals(mAccount.name)) {
 734                 boolean uploadWasFine = intent.getBooleanExtra(FileUploader.EXTRA_UPLOAD_RESULT, false);
 735                 String uploadRemotePath = intent.getStringExtra(FileUploader.EXTRA_REMOTE_PATH);
 736                 boolean renamedInUpload = getFile().getRemotePath().equals(intent.getStringExtra(FileUploader.EXTRA_OLD_REMOTE_PATH));
 737                 if (getFile().getRemotePath().equals(uploadRemotePath) ||
 738                     renamedInUpload) {
 739                     if (uploadWasFine) {
 740                         setFile(mStorageManager.getFileByPath(uploadRemotePath));
 741                     }
 742                     if (renamedInUpload) {
 743                         String newName = (new File(uploadRemotePath)).getName();
 744                         Toast msg = Toast.makeText(getActivity().getApplicationContext(), String.format(getString(R.string.filedetails_renamed_in_upload_msg), newName), Toast.LENGTH_LONG);
 745                         msg.show();
 746                     }
 747                     getSherlockActivity().removeStickyBroadcast(intent);    // not the best place to do this; a small refactorization of BroadcastReceivers should be done
 748
 749                     updateFileDetails(false, false);    // it updates the buttons; must be called although !uploadWasFine; interrupted uploads still leave an incomplete file in the server
 750
 751                     // Force the preview if the file is an image
 752                     if (uploadWasFine && PreviewImageFragment.canBePreviewed(getFile())) {
 753                         ((FileDisplayActivity) mContainerActivity).startImagePreview(getFile());
 754                     }
 755                 }
 756             }
 757         }
 758     }
 759
 760
 761     public void onDismiss(EditNameDialog dialog) {
 762         if (dialog.getResult()) {
 763             String newFilename = dialog.getNewFilename();
 764             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 765             mLastRemoteOperation = new RenameFileOperation( getFile(),
 766                                                             mAccount,
 767                                                             newFilename,
 768                                                             new FileDataStorageManager(mAccount, getActivity().getContentResolver()));
 769             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 770             ((FileDisplayActivity) getActivity()).showLoadingDialog();
 771         }
 772     }
 773
 774
 775     /**
 776      * {@inheritDoc}
 777      */
 778     @Override
 779     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 780         if (operation.equals(mLastRemoteOperation)) {
 781             if (operation instanceof RemoveFileOperation) {
 782                 onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 783
 784             } else if (operation instanceof RenameFileOperation) {
 785                 onRenameFileOperationFinish((RenameFileOperation)operation, result);
 786
 787             } else if (operation instanceof SynchronizeFileOperation) {
 788                 onSynchronizeFileOperationFinish((SynchronizeFileOperation)operation, result);
 789             }
 790         }
 791     }
 792
 793
 794     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 795         ((FileDisplayActivity) getActivity()).dismissLoadingDialog();
 796         if (result.isSuccess()) {
 797             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 798             msg.show();
 799             ((FileDisplayActivity)getActivity()).cleanSecondFragment();
 800
 801         } else {
 802             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 803             msg.show();
 804             if (result.isSslRecoverableException()) {
 805                 // TODO show the SSL warning dialog
 806             }
 807         }
 808     }
 809
 810     private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
 811         ((FileDisplayActivity) getActivity()).dismissLoadingDialog();
 812
 813         if (result.isSuccess()) {
 814             updateFileDetails(((RenameFileOperation)operation).getFile(), mAccount);
 815             mContainerActivity.onFileStateChanged();
 816
 817         } else {
 818             if (result.getCode().equals(ResultCode.INVALID_LOCAL_FILE_NAME)) {
 819                 Toast msg = Toast.makeText(getActivity(), R.string.rename_local_fail_msg, Toast.LENGTH_LONG);
 820                 msg.show();
 821                 // TODO throw again the new rename dialog
 822             } if (result.getCode().equals(ResultCode.INVALID_CHARACTER_IN_NAME)) {
 823                 Toast msg = Toast.makeText(getActivity(), R.string.filename_forbidden_characters, Toast.LENGTH_LONG);
 824                 msg.show();
 825             } else {
 826                 Toast msg = Toast.makeText(getActivity(), R.string.rename_server_fail_msg, Toast.LENGTH_LONG);
 827                 msg.show();
 828                 if (result.isSslRecoverableException()) {
 829                     // TODO show the SSL warning dialog
 830                 }
 831             }
 832         }
 833     }
 834
 835     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation, RemoteOperationResult result) {
 836         ((FileDisplayActivity) getActivity()).dismissLoadingDialog();
 837         OCFile file = getFile();
 838         if (!result.isSuccess()) {
 839             if (result.getCode() == ResultCode.SYNC_CONFLICT) {
 840                 Intent i = new Intent(getActivity(), ConflictsResolveActivity.class);
 841                 i.putExtra(ConflictsResolveActivity.EXTRA_FILE, file);
 842                 i.putExtra(ConflictsResolveActivity.EXTRA_ACCOUNT, mAccount);
 843                 startActivity(i);
 844
 845             }
 846
 847             if (file.isDown()) {
 848                 setButtonsForDown();
 849
 850             } else {
 851                 setButtonsForRemote();
 852             }
 853
 854         } else {
 855             if (operation.transferWasRequested()) {
 856                 setButtonsForTransferring();
 857                 mContainerActivity.onFileStateChanged();    // this is not working; FileDownloader won't do NOTHING at all until this method finishes, so
 858                                                             // checking the service to see if the file is downloading results in FALSE
 859             } else {
 860                 Toast msg = Toast.makeText(getActivity(), R.string.sync_file_nothing_to_do_msg, Toast.LENGTH_LONG);
 861                 msg.show();
 862                 if (file.isDown()) {
 863                     setButtonsForDown();
 864
 865                 } else {
 866                     setButtonsForRemote();
 867                 }
 868             }
 869         }
 870     }
 871
 872
 873     public void listenForTransferProgress() {
 874         if (mProgressListener != null) {
 875             if (mContainerActivity.getFileDownloaderBinder() != null) {
 876                 mContainerActivity.getFileDownloaderBinder().addDatatransferProgressListener(mProgressListener, mAccount, getFile());
 877             }
 878             if (mContainerActivity.getFileUploaderBinder() != null) {
 879                 mContainerActivity.getFileUploaderBinder().addDatatransferProgressListener(mProgressListener, mAccount, getFile());
 880             }
 881         }
 882     }
 883
 884
 885     public void leaveTransferProgress() {
 886         if (mProgressListener != null) {
 887             if (mContainerActivity.getFileDownloaderBinder() != null) {
 888                 mContainerActivity.getFileDownloaderBinder().removeDatatransferProgressListener(mProgressListener, mAccount, getFile());
 889             }
 890             if (mContainerActivity.getFileUploaderBinder() != null) {
 891                 mContainerActivity.getFileUploaderBinder().removeDatatransferProgressListener(mProgressListener, mAccount, getFile());
 892             }
 893         }
 894     }
 895
 896
 897
 898     /**
 899      * Helper class responsible for updating the progress bar shown for file uploading or downloading
 900      *
 901      * @author David A. Velasco
 902      */
 903     private class ProgressListener implements OnDatatransferProgressListener {
 904         int mLastPercent = 0;
 905         WeakReference<ProgressBar> mProgressBar = null;
 906
 907         ProgressListener(ProgressBar progressBar) {
 908             mProgressBar = new WeakReference<ProgressBar>(progressBar);
 909         }
 910
 911         @Override
 912         public void onTransferProgress(long progressRate, long totalTransferredSoFar, long totalToTransfer, String filename) {
 913             int percent = (int)(100.0*((double)totalTransferredSoFar)/((double)totalToTransfer));
 914             if (percent != mLastPercent) {
 915                 ProgressBar pb = mProgressBar.get();
 916                 if (pb != null) {
 917                     pb.setProgress(percent);
 918                     pb.postInvalidate();
 919                 }
 920             }
 921             mLastPercent = percent;
 922         }
 923
 924     };
 925
 926 }