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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2014 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.util.ArrayList;
  22
  23 import com.owncloud.android.R;
  24 import com.owncloud.android.datamodel.FileDataStorageManager;
  25 import com.owncloud.android.datamodel.OCFile;
  26 import com.owncloud.android.files.FileMenuFilter;
  27 import com.owncloud.android.ui.adapter.FileListListAdapter;
  28 import com.owncloud.android.ui.activity.FileDisplayActivity;
  29 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  30 import com.owncloud.android.ui.dialog.EditNameDialog;
  31 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
  32 import com.owncloud.android.ui.dialog.EditNameDialog.EditNameDialogListener;
  33 import com.owncloud.android.ui.preview.PreviewImageFragment;
  34 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  35 import com.owncloud.android.utils.Log_OC;
  36
  37 import android.app.Activity;
  38 import android.os.Bundle;
  39 import android.view.ContextMenu;
  40 import android.view.MenuInflater;
  41 import android.view.MenuItem;
  42 import android.view.View;
  43 import android.widget.AdapterView;
  44 import android.widget.AdapterView.AdapterContextMenuInfo;
  45
  46 /**
  47  * A Fragment that lists all files and folders in a given path.
  48  *
  49  * TODO refactorize to get rid of direct dependency on FileDisplayActivity
  50  *
  51  * @author Bartek Przybylski
  52  * @author masensio
  53  * @author David A. Velasco
  54  */
  55 public class OCFileListFragment extends ExtendedListFragment
  56 implements EditNameDialogListener, ConfirmationDialogFragmentListener {
  57
  58     private static final String TAG = OCFileListFragment.class.getSimpleName();
  59
  60     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ? OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  61     private static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  62
  63     private static final String KEY_INDEXES = "INDEXES";
  64     private static final String KEY_FIRST_POSITIONS= "FIRST_POSITIONS";
  65     private static final String KEY_TOPS = "TOPS";
  66     private static final String KEY_HEIGHT_CELL = "HEIGHT_CELL";
  67
  68     private FileFragment.ContainerActivity mContainerActivity;
  69
  70     private OCFile mFile = null;
  71     private FileListListAdapter mAdapter;
  72
  73     private OCFile mTargetFile;
  74
  75     // Save the state of the scroll in browsing
  76     private ArrayList<Integer> mIndexes;
  77     private ArrayList<Integer> mFirstPositions;
  78     private ArrayList<Integer> mTops;
  79
  80     private int mHeightCell = 0;
  81
  82     /**
  83      * {@inheritDoc}
  84      */
  85     @Override
  86     public void onAttach(Activity activity) {
  87         super.onAttach(activity);
  88         Log_OC.e(TAG, "onAttach");
  89         try {
  90             mContainerActivity = (FileFragment.ContainerActivity) activity;
  91         } catch (ClassCastException e) {
  92             throw new ClassCastException(activity.toString() + " must implement " +
  93                     FileFragment.ContainerActivity.class.getSimpleName());
  94         }
  95     }
  96
  97
  98     @Override
  99     public void onDetach() {
 100         mContainerActivity = null;
 101         super.onDetach();
 102     }
 103
 104     /**
 105      * {@inheritDoc}
 106      */
 107     @Override
 108     public void onActivityCreated(Bundle savedInstanceState) {
 109         super.onActivityCreated(savedInstanceState);
 110         Log_OC.e(TAG, "onActivityCreated() start");
 111         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 112
 113         if (savedInstanceState != null) {
 114             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
 115             mIndexes = savedInstanceState.getIntegerArrayList(KEY_INDEXES);
 116             mFirstPositions = savedInstanceState.getIntegerArrayList(KEY_FIRST_POSITIONS);
 117             mTops = savedInstanceState.getIntegerArrayList(KEY_TOPS);
 118             mHeightCell = savedInstanceState.getInt(KEY_HEIGHT_CELL);
 119
 120         } else {
 121             mIndexes = new ArrayList<Integer>();
 122             mFirstPositions = new ArrayList<Integer>();
 123             mTops = new ArrayList<Integer>();
 124             mHeightCell = 0;
 125
 126         }
 127
 128         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 129
 130         setListAdapter(mAdapter);
 131
 132         registerForContextMenu(getListView());
 133         getListView().setOnCreateContextMenuListener(this);
 134
 135  //       mHandler = new Handler();
 136   }
 137
 138     /**
 139      * Saves the current listed folder.
 140      */
 141     @Override
 142     public void onSaveInstanceState (Bundle outState) {
 143         super.onSaveInstanceState(outState);
 144         outState.putParcelable(EXTRA_FILE, mFile);
 145         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 146         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 147         outState.putIntegerArrayList(KEY_TOPS, mTops);
 148         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 149     }
 150
 151     /**
 152      * Call this, when the user presses the up button.
 153      *
 154      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 155      * it continues browsing up until finding an existing folders.
 156      *
 157      * return       Count of folder levels browsed up.
 158      */
 159     public int onBrowseUp() {
 160         OCFile parentDir = null;
 161         int moveCount = 0;
 162
 163         if(mFile != null){
 164             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 165
 166             String parentPath = null;
 167             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 168                 parentPath = new File(mFile.getRemotePath()).getParent();
 169                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 170                 parentDir = storageManager.getFileByPath(parentPath);
 171                 moveCount++;
 172             } else {
 173                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 174             }
 175             while (parentDir == null) {
 176                 parentPath = new File(parentPath).getParent();
 177                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 178                 parentDir = storageManager.getFileByPath(parentPath);
 179                 moveCount++;
 180             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 181             mFile = parentDir;
 182         }
 183
 184         if (mFile != null) {
 185             listDirectory(mFile);
 186
 187             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 188
 189             // restore index and top position
 190             restoreIndexAndTopPosition();
 191
 192         }   // else - should never happen now
 193
 194         return moveCount;
 195     }
 196
 197     /*
 198      * Restore index and position
 199      */
 200     private void restoreIndexAndTopPosition() {
 201         if (mIndexes.size() > 0) {
 202             // needs to be checked; not every browse-up had a browse-down before
 203
 204             int index = mIndexes.remove(mIndexes.size() - 1);
 205
 206             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 207
 208             int top = mTops.remove(mTops.size() - 1);
 209
 210             mList.setSelectionFromTop(firstPosition, top);
 211
 212             // Move the scroll if the selection is not visible
 213             int indexPosition = mHeightCell*index;
 214             int height = mList.getHeight();
 215
 216             if (indexPosition > height) {
 217                 if (android.os.Build.VERSION.SDK_INT >= 11)
 218                 {
 219                     mList.smoothScrollToPosition(index);
 220                 }
 221                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 222                 {
 223                     mList.setSelectionFromTop(index, 0);
 224                 }
 225
 226             }
 227         }
 228     }
 229
 230     /*
 231      * Save index and top position
 232      */
 233     private void saveIndexAndTopPosition(int index) {
 234
 235         mIndexes.add(index);
 236
 237         int firstPosition = mList.getFirstVisiblePosition();
 238         mFirstPositions.add(firstPosition);
 239
 240         View view = mList.getChildAt(0);
 241         int top = (view == null) ? 0 : view.getTop() ;
 242
 243         mTops.add(top);
 244
 245         // Save the height of a cell
 246         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 247     }
 248
 249     @Override
 250     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 251         OCFile file = (OCFile) mAdapter.getItem(position);
 252         if (file != null) {
 253             if (file.isFolder()) {
 254                 // update state and view of this fragment
 255                 listDirectory(file);
 256                 // then, notify parent activity to let it update its state and view, and other fragments
 257                 mContainerActivity.onBrowsedDownTo(file);
 258                 // save index and top position
 259                 saveIndexAndTopPosition(position);
 260
 261             } else { /// Click on a file
 262                 if (PreviewImageFragment.canBePreviewed(file)) {
 263                     // preview image - it handles the download, if needed
 264                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 265
 266                 } else if (file.isDown()) {
 267                     if (PreviewMediaFragment.canBePreviewed(file)) {
 268                         // media preview
 269                         ((FileDisplayActivity)mContainerActivity).startMediaPreview(file, 0, true);
 270                     } else {
 271                         mContainerActivity.getFileOperationsHelper().openFile(file);
 272                     }
 273
 274                 } else {
 275                     // automatic download, preview on finish
 276                     ((FileDisplayActivity)mContainerActivity).startDownloadForPreview(file);
 277                 }
 278
 279             }
 280
 281         } else {
 282             Log_OC.d(TAG, "Null object in ListAdapter!!");
 283         }
 284
 285     }
 286
 287     /**
 288      * {@inheritDoc}
 289      */
 290     @Override
 291     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 292         super.onCreateContextMenu(menu, v, menuInfo);
 293         MenuInflater inflater = getSherlockActivity().getMenuInflater();
 294         inflater.inflate(R.menu.file_actions_menu, menu);
 295         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 296         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 297
 298         FileMenuFilter mf = new FileMenuFilter(
 299             targetFile,
 300             mContainerActivity.getStorageManager().getAccount(),
 301             mContainerActivity,
 302             getSherlockActivity()
 303         );
 304         mf.filter(menu);
 305
 306         /// additional restrictions for this fragment
 307         // TODO allow in the future 'open with' for previewable files
 308         MenuItem item = menu.findItem(R.id.action_open_file_with);
 309         if (item != null) {
 310             item.setVisible(false);
 311             item.setEnabled(false);
 312         }
 313         /// TODO break this direct dependency on FileDisplayActivity... if possible
 314         FileFragment frag = ((FileDisplayActivity)getSherlockActivity()).getSecondFragment();
 315         if (frag != null && frag instanceof FileDetailFragment &&
 316                 frag.getFile().getFileId() == targetFile.getFileId()) {
 317             item = menu.findItem(R.id.action_see_details);
 318             if (item != null) {
 319                 item.setVisible(false);
 320                 item.setEnabled(false);
 321             }
 322         }
 323
 324
 325     }
 326
 327
 328     /**
 329      * {@inhericDoc}
 330      */
 331     @Override
 332     public boolean onContextItemSelected (MenuItem item) {
 333         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 334         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 335         switch (item.getItemId()) {
 336             case R.id.action_share_file: {
 337                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 338                 return true;
 339             }
 340             case R.id.action_unshare_file: {
 341                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 342                 return true;
 343             }
 344             case R.id.action_rename_file: {
 345                 String fileName = mTargetFile.getFileName();
 346                 int extensionStart = mTargetFile.isFolder() ? -1 : fileName.lastIndexOf(".");
 347                 int selectionEnd = (extensionStart >= 0) ? extensionStart : fileName.length();
 348                 EditNameDialog dialog = EditNameDialog.newInstance(getString(R.string.rename_dialog_title), fileName, 0, selectionEnd, this);
 349                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 350                 return true;
 351             }
 352             case R.id.action_remove_file: {
 353                 int messageStringId = R.string.confirmation_remove_alert;
 354                 int posBtnStringId = R.string.confirmation_remove_remote;
 355                 int neuBtnStringId = -1;
 356                 if (mTargetFile.isFolder()) {
 357                     messageStringId = R.string.confirmation_remove_folder_alert;
 358                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 359                     neuBtnStringId = R.string.confirmation_remove_folder_local;
 360                 } else if (mTargetFile.isDown()) {
 361                     posBtnStringId = R.string.confirmation_remove_remote_and_local;
 362                     neuBtnStringId = R.string.confirmation_remove_local;
 363                 }
 364                 ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 365                         messageStringId,
 366                         new String[]{mTargetFile.getFileName()},
 367                         posBtnStringId,
 368                         neuBtnStringId,
 369                         R.string.common_cancel);
 370                 confDialog.setOnConfirmationListener(this);
 371                 confDialog.show(getFragmentManager(), FileDetailFragment.FTAG_CONFIRMATION);
 372                 return true;
 373             }
 374             case R.id.action_download_file:
 375             case R.id.action_sync_file: {
 376                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 377                 return true;
 378             }
 379             case R.id.action_cancel_download:
 380             case R.id.action_cancel_upload: {
 381                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 382                 return true;
 383             }
 384             case R.id.action_see_details: {
 385                 mContainerActivity.showDetails(mTargetFile);
 386                 return true;
 387             }
 388             case R.id.action_send_file: {
 389                 // Obtain the file
 390                 if (!mTargetFile.isDown()) {  // Download the file
 391                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 392                     ((FileDisplayActivity)mContainerActivity).startDownloadForSending(mTargetFile);
 393
 394                 } else {
 395                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 396                 }
 397                 return true;
 398             }
 399             default:
 400                 return super.onContextItemSelected(item);
 401         }
 402     }
 403
 404
 405     /**
 406      * Use this to query the {@link OCFile} that is currently
 407      * being displayed by this fragment
 408      * @return The currently viewed OCFile
 409      */
 410     public OCFile getCurrentFile(){
 411         return mFile;
 412     }
 413
 414     /**
 415      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 416      */
 417     public void listDirectory(){
 418         listDirectory(null);
 419     }
 420
 421     /**
 422      * Lists the given directory on the view. When the input parameter is null,
 423      * it will either refresh the last known directory. list the root
 424      * if there never was a directory.
 425      *
 426      * @param directory File to be listed
 427      */
 428     public void listDirectory(OCFile directory) {
 429         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 430         if (storageManager != null) {
 431
 432             // Check input parameters for null
 433             if(directory == null){
 434                 if(mFile != null){
 435                     directory = mFile;
 436                 } else {
 437                     directory = storageManager.getFileByPath("/");
 438                     if (directory == null) return; // no files, wait for sync
 439                 }
 440             }
 441
 442
 443             // If that's not a directory -> List its parent
 444             if(!directory.isFolder()){
 445                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 446                 directory = storageManager.getFileById(directory.getParentId());
 447             }
 448
 449             mAdapter.swapDirectory(directory, storageManager);
 450             if (mFile == null || !mFile.equals(directory)) {
 451                 mList.setSelectionFromTop(0, 0);
 452             }
 453             mFile = directory;
 454         }
 455     }
 456
 457
 458
 459     @Override
 460     public void onDismiss(EditNameDialog dialog) {
 461         if (dialog.getResult()) {
 462             String newFilename = dialog.getNewFilename();
 463             Log_OC.d(TAG, "name edit dialog dismissed with new name " + newFilename);
 464             mContainerActivity.getFileOperationsHelper().renameFile(mTargetFile, newFilename);
 465         }
 466     }
 467
 468
 469     @Override
 470     public void onConfirmation(String callerTag) {
 471         if (callerTag.equals(FileDetailFragment.FTAG_CONFIRMATION)) {
 472             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 473             if (storageManager.getFileById(mTargetFile.getFileId()) != null) {
 474                 mContainerActivity.getFileOperationsHelper().removeFile(mTargetFile, true);
 475             }
 476         }
 477     }
 478
 479     @Override
 480     public void onNeutral(String callerTag) {
 481         mContainerActivity.getStorageManager().removeFile(mTargetFile, false, true);    // TODO perform in background task / new thread
 482         listDirectory();
 483         mContainerActivity.onTransferStateChanged(mTargetFile, false, false);
 484     }
 485
 486     @Override
 487     public void onCancel(String callerTag) {
 488         Log_OC.d(TAG, "REMOVAL CANCELED");
 489     }
 490
 491 }