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 android.app.Activity;
  24 import android.os.Bundle;
  25 import android.view.ContextMenu;
  26 import android.view.MenuInflater;
  27 import android.view.MenuItem;
  28 import android.view.View;
  29 import android.widget.AdapterView;
  30 import android.widget.AdapterView.AdapterContextMenuInfo;
  31
  32 import com.owncloud.android.R;
  33 import com.owncloud.android.datamodel.FileDataStorageManager;
  34 import com.owncloud.android.datamodel.OCFile;
  35 import com.owncloud.android.files.FileMenuFilter;
  36 import com.owncloud.android.lib.common.utils.Log_OC;
  37 import com.owncloud.android.ui.activity.FileDisplayActivity;
  38 import com.owncloud.android.ui.adapter.FileListListAdapter;
  39 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  40 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
  41 import com.owncloud.android.ui.dialog.RenameFileDialogFragment;
  42 import com.owncloud.android.ui.preview.PreviewImageFragment;
  43 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  44
  45 /**
  46  * A Fragment that lists all files and folders in a given path.
  47  *
  48  * TODO refactorize to get rid of direct dependency on FileDisplayActivity
  49  *
  50  * @author Bartek Przybylski
  51  * @author masensio
  52  * @author David A. Velasco
  53  */
  54 public class OCFileListFragment extends ExtendedListFragment {
  55
  56     private static final String TAG = OCFileListFragment.class.getSimpleName();
  57
  58     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ? OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  59     private static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  60
  61     private static final String KEY_INDEXES = "INDEXES";
  62     private static final String KEY_FIRST_POSITIONS= "FIRST_POSITIONS";
  63     private static final String KEY_TOPS = "TOPS";
  64     private static final String KEY_HEIGHT_CELL = "HEIGHT_CELL";
  65     private static final String KEY_EMPTY_LIST_MESSAGE = "EMPTY_LIST_MESSAGE";
  66
  67     private FileFragment.ContainerActivity mContainerActivity;
  68
  69     private OCFile mFile = null;
  70     private FileListListAdapter mAdapter;
  71
  72     private OCFile mTargetFile;
  73
  74     // Save the state of the scroll in browsing
  75     private ArrayList<Integer> mIndexes;
  76     private ArrayList<Integer> mFirstPositions;
  77     private ArrayList<Integer> mTops;
  78
  79     private int mHeightCell = 0;
  80
  81     /**
  82      * {@inheritDoc}
  83      */
  84     @Override
  85     public void onAttach(Activity activity) {
  86         super.onAttach(activity);
  87         Log_OC.e(TAG, "onAttach");
  88         try {
  89             mContainerActivity = (FileFragment.ContainerActivity) activity;
  90         } catch (ClassCastException e) {
  91             throw new ClassCastException(activity.toString() + " must implement " +
  92                     FileFragment.ContainerActivity.class.getSimpleName());
  93         }
  94     }
  95
  96
  97     @Override
  98     public void onDetach() {
  99         mContainerActivity = null;
 100         super.onDetach();
 101     }
 102
 103     /**
 104      * {@inheritDoc}
 105      */
 106     @Override
 107     public void onActivityCreated(Bundle savedInstanceState) {
 108         super.onActivityCreated(savedInstanceState);
 109         Log_OC.e(TAG, "onActivityCreated() start");
 110
 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             setMessageForEmptyList(savedInstanceState.getString(KEY_EMPTY_LIST_MESSAGE));
 120
 121         } else {
 122             mIndexes = new ArrayList<Integer>();
 123             mFirstPositions = new ArrayList<Integer>();
 124             mTops = new ArrayList<Integer>();
 125             mHeightCell = 0;
 126
 127         }
 128
 129         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 130
 131         setListAdapter(mAdapter);
 132
 133         registerForContextMenu(getListView());
 134         getListView().setOnCreateContextMenuListener(this);
 135   }
 136
 137     /**
 138      * Saves the current listed folder.
 139      */
 140     @Override
 141     public void onSaveInstanceState (Bundle outState) {
 142         super.onSaveInstanceState(outState);
 143         outState.putParcelable(EXTRA_FILE, mFile);
 144         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 145         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 146         outState.putIntegerArrayList(KEY_TOPS, mTops);
 147         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 148         outState.putString(KEY_EMPTY_LIST_MESSAGE, getEmptyViewText());
 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         if (mContainerActivity.getStorageManager() != null) {
 299             FileMenuFilter mf = new FileMenuFilter(
 300                 targetFile,
 301                 mContainerActivity.getStorageManager().getAccount(),
 302                 mContainerActivity,
 303                 getSherlockActivity()
 304             );
 305             mf.filter(menu);
 306         }
 307
 308         /// additional restrictions for this fragment
 309         // TODO allow in the future 'open with' for previewable files
 310         MenuItem item = menu.findItem(R.id.action_open_file_with);
 311         if (item != null) {
 312             item.setVisible(false);
 313             item.setEnabled(false);
 314         }
 315         /// TODO break this direct dependency on FileDisplayActivity... if possible
 316         FileFragment frag = ((FileDisplayActivity)getSherlockActivity()).getSecondFragment();
 317         if (frag != null && frag instanceof FileDetailFragment &&
 318                 frag.getFile().getFileId() == targetFile.getFileId()) {
 319             item = menu.findItem(R.id.action_see_details);
 320             if (item != null) {
 321                 item.setVisible(false);
 322                 item.setEnabled(false);
 323             }
 324         }
 325
 326
 327     }
 328
 329
 330     /**
 331      * {@inhericDoc}
 332      */
 333     @Override
 334     public boolean onContextItemSelected (MenuItem item) {
 335         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 336         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 337         switch (item.getItemId()) {
 338             case R.id.action_share_file: {
 339                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 340                 return true;
 341             }
 342             case R.id.action_unshare_file: {
 343                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 344                 return true;
 345             }
 346             case R.id.action_rename_file: {
 347                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 348                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 349                 return true;
 350             }
 351             case R.id.action_remove_file: {
 352                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 353                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 354                 return true;
 355             }
 356             case R.id.action_download_file:
 357             case R.id.action_sync_file: {
 358                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 359                 return true;
 360             }
 361             case R.id.action_cancel_download:
 362             case R.id.action_cancel_upload: {
 363                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 364                 return true;
 365             }
 366             case R.id.action_see_details: {
 367                 mContainerActivity.showDetails(mTargetFile);
 368                 return true;
 369             }
 370             case R.id.action_send_file: {
 371                 // Obtain the file
 372                 if (!mTargetFile.isDown()) {  // Download the file
 373                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 374                     ((FileDisplayActivity)mContainerActivity).startDownloadForSending(mTargetFile);
 375
 376                 } else {
 377                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 378                 }
 379                 return true;
 380             }
 381             default:
 382                 return super.onContextItemSelected(item);
 383         }
 384     }
 385
 386
 387     /**
 388      * Use this to query the {@link OCFile} that is currently
 389      * being displayed by this fragment
 390      * @return The currently viewed OCFile
 391      */
 392     public OCFile getCurrentFile(){
 393         return mFile;
 394     }
 395
 396     /**
 397      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 398      */
 399     public void listDirectory(){
 400         listDirectory(null);
 401     }
 402
 403     /**
 404      * Lists the given directory on the view. When the input parameter is null,
 405      * it will either refresh the last known directory. list the root
 406      * if there never was a directory.
 407      *
 408      * @param directory File to be listed
 409      */
 410     public void listDirectory(OCFile directory) {
 411         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 412         if (storageManager != null) {
 413
 414             // Check input parameters for null
 415             if(directory == null){
 416                 if(mFile != null){
 417                     directory = mFile;
 418                 } else {
 419                     directory = storageManager.getFileByPath("/");
 420                     if (directory == null) return; // no files, wait for sync
 421                 }
 422             }
 423
 424
 425             // If that's not a directory -> List its parent
 426             if(!directory.isFolder()){
 427                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 428                 directory = storageManager.getFileById(directory.getParentId());
 429             }
 430
 431             mAdapter.swapDirectory(directory, storageManager);
 432             if (mFile == null || !mFile.equals(directory)) {
 433                 mList.setSelectionFromTop(0, 0);
 434             }
 435             mFile = directory;
 436         }
 437     }
 438
 439
 440     @Override
 441     public void onRefresh() {
 442         super.onRefresh();
 443
 444         if (mFile != null) {
 445             // Refresh mFile
 446             mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
 447
 448             listDirectory(mFile);
 449
 450             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 451         }
 452     }
 453
 454
 455
 456 }