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.RemoveFileDialogFragment;
  31 import com.owncloud.android.ui.dialog.RenameFileDialogFragment;
  32 import com.owncloud.android.ui.preview.PreviewImageFragment;
  33 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  34 import com.owncloud.android.utils.Log_OC;
  35
  36 import android.app.Activity;
  37 import android.os.Bundle;
  38 import android.support.v4.widget.SwipeRefreshLayout;
  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
  57     private static final String TAG = OCFileListFragment.class.getSimpleName();
  58
  59     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ? OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  60     private static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  61
  62     private static final String KEY_INDEXES = "INDEXES";
  63     private static final String KEY_FIRST_POSITIONS= "FIRST_POSITIONS";
  64     private static final String KEY_TOPS = "TOPS";
  65     private static final String KEY_HEIGHT_CELL = "HEIGHT_CELL";
  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
 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   }
 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     }
 149
 150     /**
 151      * Call this, when the user presses the up button.
 152      *
 153      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 154      * it continues browsing up until finding an existing folders.
 155      *
 156      * return       Count of folder levels browsed up.
 157      */
 158     public int onBrowseUp() {
 159         OCFile parentDir = null;
 160         int moveCount = 0;
 161
 162         if(mFile != null){
 163             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 164
 165             String parentPath = null;
 166             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 167                 parentPath = new File(mFile.getRemotePath()).getParent();
 168                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 169                 parentDir = storageManager.getFileByPath(parentPath);
 170                 moveCount++;
 171             } else {
 172                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 173             }
 174             while (parentDir == null) {
 175                 parentPath = new File(parentPath).getParent();
 176                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 177                 parentDir = storageManager.getFileByPath(parentPath);
 178                 moveCount++;
 179             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 180             mFile = parentDir;
 181         }
 182
 183         if (mFile != null) {
 184             listDirectory(mFile);
 185
 186             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 187
 188             // restore index and top position
 189             restoreIndexAndTopPosition();
 190
 191         }   // else - should never happen now
 192
 193         return moveCount;
 194     }
 195
 196     /*
 197      * Restore index and position
 198      */
 199     private void restoreIndexAndTopPosition() {
 200         if (mIndexes.size() > 0) {
 201             // needs to be checked; not every browse-up had a browse-down before
 202
 203             int index = mIndexes.remove(mIndexes.size() - 1);
 204
 205             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 206
 207             int top = mTops.remove(mTops.size() - 1);
 208
 209             mList.setSelectionFromTop(firstPosition, top);
 210
 211             // Move the scroll if the selection is not visible
 212             int indexPosition = mHeightCell*index;
 213             int height = mList.getHeight();
 214
 215             if (indexPosition > height) {
 216                 if (android.os.Build.VERSION.SDK_INT >= 11)
 217                 {
 218                     mList.smoothScrollToPosition(index);
 219                 }
 220                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 221                 {
 222                     mList.setSelectionFromTop(index, 0);
 223                 }
 224
 225             }
 226         }
 227     }
 228
 229     /*
 230      * Save index and top position
 231      */
 232     private void saveIndexAndTopPosition(int index) {
 233
 234         mIndexes.add(index);
 235
 236         int firstPosition = mList.getFirstVisiblePosition();
 237         mFirstPositions.add(firstPosition);
 238
 239         View view = mList.getChildAt(0);
 240         int top = (view == null) ? 0 : view.getTop() ;
 241
 242         mTops.add(top);
 243
 244         // Save the height of a cell
 245         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 246     }
 247
 248     @Override
 249     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 250         OCFile file = (OCFile) mAdapter.getItem(position);
 251         if (file != null) {
 252             if (file.isFolder()) {
 253                 // update state and view of this fragment
 254                 listDirectory(file);
 255                 // then, notify parent activity to let it update its state and view, and other fragments
 256                 mContainerActivity.onBrowsedDownTo(file);
 257                 // save index and top position
 258                 saveIndexAndTopPosition(position);
 259
 260             } else { /// Click on a file
 261                 if (PreviewImageFragment.canBePreviewed(file)) {
 262                     // preview image - it handles the download, if needed
 263                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 264
 265                 } else if (file.isDown()) {
 266                     if (PreviewMediaFragment.canBePreviewed(file)) {
 267                         // media preview
 268                         ((FileDisplayActivity)mContainerActivity).startMediaPreview(file, 0, true);
 269                     } else {
 270                         mContainerActivity.getFileOperationsHelper().openFile(file);
 271                     }
 272
 273                 } else {
 274                     // automatic download, preview on finish
 275                     ((FileDisplayActivity)mContainerActivity).startDownloadForPreview(file);
 276                 }
 277
 278             }
 279
 280         } else {
 281             Log_OC.d(TAG, "Null object in ListAdapter!!");
 282         }
 283
 284     }
 285
 286     /**
 287      * {@inheritDoc}
 288      */
 289     @Override
 290     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 291         super.onCreateContextMenu(menu, v, menuInfo);
 292         MenuInflater inflater = getSherlockActivity().getMenuInflater();
 293         inflater.inflate(R.menu.file_actions_menu, menu);
 294         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 295         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 296
 297         if (mContainerActivity.getStorageManager() != null) {
 298             FileMenuFilter mf = new FileMenuFilter(
 299                 targetFile,
 300                 mContainerActivity.getStorageManager().getAccount(),
 301                 mContainerActivity,
 302                 getSherlockActivity()
 303             );
 304             mf.filter(menu);
 305         }
 306
 307         /// additional restrictions for this fragment
 308         // TODO allow in the future 'open with' for previewable files
 309         MenuItem item = menu.findItem(R.id.action_open_file_with);
 310         if (item != null) {
 311             item.setVisible(false);
 312             item.setEnabled(false);
 313         }
 314         /// TODO break this direct dependency on FileDisplayActivity... if possible
 315         FileFragment frag = ((FileDisplayActivity)getSherlockActivity()).getSecondFragment();
 316         if (frag != null && frag instanceof FileDetailFragment &&
 317                 frag.getFile().getFileId() == targetFile.getFileId()) {
 318             item = menu.findItem(R.id.action_see_details);
 319             if (item != null) {
 320                 item.setVisible(false);
 321                 item.setEnabled(false);
 322             }
 323         }
 324
 325
 326     }
 327
 328
 329     /**
 330      * {@inhericDoc}
 331      */
 332     @Override
 333     public boolean onContextItemSelected (MenuItem item) {
 334         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 335         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 336         switch (item.getItemId()) {
 337             case R.id.action_share_file: {
 338                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 339                 return true;
 340             }
 341             case R.id.action_unshare_file: {
 342                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 343                 return true;
 344             }
 345             case R.id.action_rename_file: {
 346                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 347                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 348                 return true;
 349             }
 350             case R.id.action_remove_file: {
 351                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 352                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 353                 return true;
 354             }
 355             case R.id.action_download_file:
 356             case R.id.action_sync_file: {
 357                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 358                 return true;
 359             }
 360             case R.id.action_cancel_download:
 361             case R.id.action_cancel_upload: {
 362                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 363                 return true;
 364             }
 365             case R.id.action_see_details: {
 366                 mContainerActivity.showDetails(mTargetFile);
 367                 return true;
 368             }
 369             case R.id.action_send_file: {
 370                 // Obtain the file
 371                 if (!mTargetFile.isDown()) {  // Download the file
 372                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 373                     ((FileDisplayActivity)mContainerActivity).startDownloadForSending(mTargetFile);
 374
 375                 } else {
 376                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 377                 }
 378                 return true;
 379             }
 380             default:
 381                 return super.onContextItemSelected(item);
 382         }
 383     }
 384
 385
 386     /**
 387      * Use this to query the {@link OCFile} that is currently
 388      * being displayed by this fragment
 389      * @return The currently viewed OCFile
 390      */
 391     public OCFile getCurrentFile(){
 392         return mFile;
 393     }
 394
 395     /**
 396      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 397      */
 398     public void listDirectory(){
 399         listDirectory(null);
 400     }
 401
 402     /**
 403      * Lists the given directory on the view. When the input parameter is null,
 404      * it will either refresh the last known directory. list the root
 405      * if there never was a directory.
 406      *
 407      * @param directory File to be listed
 408      */
 409     public void listDirectory(OCFile directory) {
 410         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 411         if (storageManager != null) {
 412
 413             // Check input parameters for null
 414             if(directory == null){
 415                 if(mFile != null){
 416                     directory = mFile;
 417                 } else {
 418                     directory = storageManager.getFileByPath("/");
 419                     if (directory == null) return; // no files, wait for sync
 420                 }
 421             }
 422
 423
 424             // If that's not a directory -> List its parent
 425             if(!directory.isFolder()){
 426                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 427                 directory = storageManager.getFileById(directory.getParentId());
 428             }
 429
 430             mAdapter.swapDirectory(directory, storageManager);
 431             if (mFile == null || !mFile.equals(directory)) {
 432                 mList.setSelectionFromTop(0, 0);
 433             }
 434             mFile = directory;
 435         }
 436     }
 437
 438 }