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.view.ContextMenu;
  39 import android.view.MenuInflater;
  40 import android.view.MenuItem;
  41 import android.view.View;
  42 import android.widget.AdapterView;
  43 import android.widget.AdapterView.AdapterContextMenuInfo;
  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
  66     private FileFragment.ContainerActivity mContainerActivity;
  67
  68     private OCFile mFile = null;
  69     private FileListListAdapter mAdapter;
  70
  71     private OCFile mTargetFile;
  72
  73     // Save the state of the scroll in browsing
  74     private ArrayList<Integer> mIndexes;
  75     private ArrayList<Integer> mFirstPositions;
  76     private ArrayList<Integer> mTops;
  77
  78     private int mHeightCell = 0;
  79
  80     /**
  81      * {@inheritDoc}
  82      */
  83     @Override
  84     public void onAttach(Activity activity) {
  85         super.onAttach(activity);
  86         Log_OC.e(TAG, "onAttach");
  87         try {
  88             mContainerActivity = (FileFragment.ContainerActivity) activity;
  89         } catch (ClassCastException e) {
  90             throw new ClassCastException(activity.toString() + " must implement " +
  91                     FileFragment.ContainerActivity.class.getSimpleName());
  92         }
  93     }
  94
  95
  96     @Override
  97     public void onDetach() {
  98         mContainerActivity = null;
  99         super.onDetach();
 100     }
 101
 102     /**
 103      * {@inheritDoc}
 104      */
 105     @Override
 106     public void onActivityCreated(Bundle savedInstanceState) {
 107         super.onActivityCreated(savedInstanceState);
 108         Log_OC.e(TAG, "onActivityCreated() start");
 109
 110         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 111
 112         if (savedInstanceState != null) {
 113             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
 114             mIndexes = savedInstanceState.getIntegerArrayList(KEY_INDEXES);
 115             mFirstPositions = savedInstanceState.getIntegerArrayList(KEY_FIRST_POSITIONS);
 116             mTops = savedInstanceState.getIntegerArrayList(KEY_TOPS);
 117             mHeightCell = savedInstanceState.getInt(KEY_HEIGHT_CELL);
 118
 119         } else {
 120             mIndexes = new ArrayList<Integer>();
 121             mFirstPositions = new ArrayList<Integer>();
 122             mTops = new ArrayList<Integer>();
 123             mHeightCell = 0;
 124
 125         }
 126
 127         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 128
 129         setListAdapter(mAdapter);
 130
 131         registerForContextMenu(getListView());
 132         getListView().setOnCreateContextMenuListener(this);
 133
 134   }
 135
 136     /**
 137      * Saves the current listed folder.
 138      */
 139     @Override
 140     public void onSaveInstanceState (Bundle outState) {
 141         super.onSaveInstanceState(outState);
 142         outState.putParcelable(EXTRA_FILE, mFile);
 143         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 144         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 145         outState.putIntegerArrayList(KEY_TOPS, mTops);
 146         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 147     }
 148
 149     /**
 150      * Call this, when the user presses the up button.
 151      *
 152      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 153      * it continues browsing up until finding an existing folders.
 154      *
 155      * return       Count of folder levels browsed up.
 156      */
 157     public int onBrowseUp() {
 158         OCFile parentDir = null;
 159         int moveCount = 0;
 160
 161         if(mFile != null){
 162             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 163
 164             String parentPath = null;
 165             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 166                 parentPath = new File(mFile.getRemotePath()).getParent();
 167                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 168                 parentDir = storageManager.getFileByPath(parentPath);
 169                 moveCount++;
 170             } else {
 171                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 172             }
 173             while (parentDir == null) {
 174                 parentPath = new File(parentPath).getParent();
 175                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 176                 parentDir = storageManager.getFileByPath(parentPath);
 177                 moveCount++;
 178             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 179             mFile = parentDir;
 180         }
 181
 182         if (mFile != null) {
 183             listDirectory(mFile);
 184
 185             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 186
 187             // restore index and top position
 188             restoreIndexAndTopPosition();
 189
 190         }   // else - should never happen now
 191
 192         return moveCount;
 193     }
 194
 195     /*
 196      * Restore index and position
 197      */
 198     private void restoreIndexAndTopPosition() {
 199         if (mIndexes.size() > 0) {
 200             // needs to be checked; not every browse-up had a browse-down before
 201
 202             int index = mIndexes.remove(mIndexes.size() - 1);
 203
 204             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 205
 206             int top = mTops.remove(mTops.size() - 1);
 207
 208             mList.setSelectionFromTop(firstPosition, top);
 209
 210             // Move the scroll if the selection is not visible
 211             int indexPosition = mHeightCell*index;
 212             int height = mList.getHeight();
 213
 214             if (indexPosition > height) {
 215                 if (android.os.Build.VERSION.SDK_INT >= 11)
 216                 {
 217                     mList.smoothScrollToPosition(index);
 218                 }
 219                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 220                 {
 221                     mList.setSelectionFromTop(index, 0);
 222                 }
 223
 224             }
 225         }
 226     }
 227
 228     /*
 229      * Save index and top position
 230      */
 231     private void saveIndexAndTopPosition(int index) {
 232
 233         mIndexes.add(index);
 234
 235         int firstPosition = mList.getFirstVisiblePosition();
 236         mFirstPositions.add(firstPosition);
 237
 238         View view = mList.getChildAt(0);
 239         int top = (view == null) ? 0 : view.getTop() ;
 240
 241         mTops.add(top);
 242
 243         // Save the height of a cell
 244         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 245     }
 246
 247     @Override
 248     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 249         OCFile file = (OCFile) mAdapter.getItem(position);
 250         if (file != null) {
 251             if (file.isFolder()) {
 252                 // update state and view of this fragment
 253                 listDirectory(file);
 254                 // then, notify parent activity to let it update its state and view, and other fragments
 255                 mContainerActivity.onBrowsedDownTo(file);
 256                 // save index and top position
 257                 saveIndexAndTopPosition(position);
 258
 259             } else { /// Click on a file
 260                 if (PreviewImageFragment.canBePreviewed(file)) {
 261                     // preview image - it handles the download, if needed
 262                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 263
 264                 } else if (file.isDown()) {
 265                     if (PreviewMediaFragment.canBePreviewed(file)) {
 266                         // media preview
 267                         ((FileDisplayActivity)mContainerActivity).startMediaPreview(file, 0, true);
 268                     } else {
 269                         mContainerActivity.getFileOperationsHelper().openFile(file);
 270                     }
 271
 272                 } else {
 273                     // automatic download, preview on finish
 274                     ((FileDisplayActivity)mContainerActivity).startDownloadForPreview(file);
 275                 }
 276
 277             }
 278
 279         } else {
 280             Log_OC.d(TAG, "Null object in ListAdapter!!");
 281         }
 282
 283     }
 284
 285     /**
 286      * {@inheritDoc}
 287      */
 288     @Override
 289     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 290         super.onCreateContextMenu(menu, v, menuInfo);
 291         MenuInflater inflater = getSherlockActivity().getMenuInflater();
 292         inflater.inflate(R.menu.file_actions_menu, menu);
 293         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 294         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 295
 296         if (mContainerActivity.getStorageManager() != null) {
 297             FileMenuFilter mf = new FileMenuFilter(
 298                 targetFile,
 299                 mContainerActivity.getStorageManager().getAccount(),
 300                 mContainerActivity,
 301                 getSherlockActivity()
 302             );
 303             mf.filter(menu);
 304         }
 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                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 346                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 347                 return true;
 348             }
 349             case R.id.action_remove_file: {
 350                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 351                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 352                 return true;
 353             }
 354             case R.id.action_download_file:
 355             case R.id.action_sync_file: {
 356                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 357                 return true;
 358             }
 359             case R.id.action_cancel_download:
 360             case R.id.action_cancel_upload: {
 361                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 362                 return true;
 363             }
 364             case R.id.action_see_details: {
 365                 mContainerActivity.showDetails(mTargetFile);
 366                 return true;
 367             }
 368             case R.id.action_send_file: {
 369                 // Obtain the file
 370                 if (!mTargetFile.isDown()) {  // Download the file
 371                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 372                     ((FileDisplayActivity)mContainerActivity).startDownloadForSending(mTargetFile);
 373
 374                 } else {
 375                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 376                 }
 377                 return true;
 378             }
 379             default:
 380                 return super.onContextItemSelected(item);
 381         }
 382     }
 383
 384
 385     /**
 386      * Use this to query the {@link OCFile} that is currently
 387      * being displayed by this fragment
 388      * @return The currently viewed OCFile
 389      */
 390     public OCFile getCurrentFile(){
 391         return mFile;
 392     }
 393
 394     /**
 395      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 396      */
 397     public void listDirectory(){
 398         listDirectory(null);
 399     }
 400
 401     /**
 402      * Lists the given directory on the view. When the input parameter is null,
 403      * it will either refresh the last known directory. list the root
 404      * if there never was a directory.
 405      *
 406      * @param directory File to be listed
 407      */
 408     public void listDirectory(OCFile directory) {
 409         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 410         if (storageManager != null) {
 411
 412             // Check input parameters for null
 413             if(directory == null){
 414                 if(mFile != null){
 415                     directory = mFile;
 416                 } else {
 417                     directory = storageManager.getFileByPath("/");
 418                     if (directory == null) return; // no files, wait for sync
 419                 }
 420             }
 421
 422
 423             // If that's not a directory -> List its parent
 424             if(!directory.isFolder()){
 425                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 426                 directory = storageManager.getFileById(directory.getParentId());
 427             }
 428
 429             mAdapter.swapDirectory(directory, storageManager);
 430             if (mFile == null || !mFile.equals(directory)) {
 431                 mList.setSelectionFromTop(0, 0);
 432             }
 433             mFile = directory;
 434         }
 435     }
 436
 437
 438     @Override
 439     public void onRefresh() {
 440         super.onRefresh();
 441
 442         if (mFile != null) {
 443             // Refresh mFile
 444             mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
 445
 446             listDirectory(mFile);
 447
 448             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 449             Log_OC.d(TAG, "Parent etag= |" + mFile.getEtag() + "|");
 450         }
 451     }
 452
 453
 454
 455 }