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         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 110
 111         if (savedInstanceState != null) {
 112             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
 113             mIndexes = savedInstanceState.getIntegerArrayList(KEY_INDEXES);
 114             mFirstPositions = savedInstanceState.getIntegerArrayList(KEY_FIRST_POSITIONS);
 115             mTops = savedInstanceState.getIntegerArrayList(KEY_TOPS);
 116             mHeightCell = savedInstanceState.getInt(KEY_HEIGHT_CELL);
 117
 118         } else {
 119             mIndexes = new ArrayList<Integer>();
 120             mFirstPositions = new ArrayList<Integer>();
 121             mTops = new ArrayList<Integer>();
 122             mHeightCell = 0;
 123
 124         }
 125
 126         mAdapter = new FileListListAdapter(getSherlockActivity(), mContainerActivity);
 127
 128         setListAdapter(mAdapter);
 129
 130         registerForContextMenu(getListView());
 131         getListView().setOnCreateContextMenuListener(this);
 132
 133   }
 134
 135     /**
 136      * Saves the current listed folder.
 137      */
 138     @Override
 139     public void onSaveInstanceState (Bundle outState) {
 140         super.onSaveInstanceState(outState);
 141         outState.putParcelable(EXTRA_FILE, mFile);
 142         outState.putIntegerArrayList(KEY_INDEXES, mIndexes);
 143         outState.putIntegerArrayList(KEY_FIRST_POSITIONS, mFirstPositions);
 144         outState.putIntegerArrayList(KEY_TOPS, mTops);
 145         outState.putInt(KEY_HEIGHT_CELL, mHeightCell);
 146     }
 147
 148     /**
 149      * Call this, when the user presses the up button.
 150      *
 151      * Tries to move up the current folder one level. If the parent folder was removed from the database,
 152      * it continues browsing up until finding an existing folders.
 153      *
 154      * return       Count of folder levels browsed up.
 155      */
 156     public int onBrowseUp() {
 157         OCFile parentDir = null;
 158         int moveCount = 0;
 159
 160         if(mFile != null){
 161             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 162
 163             String parentPath = null;
 164             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 165                 parentPath = new File(mFile.getRemotePath()).getParent();
 166                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 167                 parentDir = storageManager.getFileByPath(parentPath);
 168                 moveCount++;
 169             } else {
 170                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);    // never returns null; keep the path in root folder
 171             }
 172             while (parentDir == null) {
 173                 parentPath = new File(parentPath).getParent();
 174                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR;
 175                 parentDir = storageManager.getFileByPath(parentPath);
 176                 moveCount++;
 177             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 178             mFile = parentDir;
 179         }
 180
 181         if (mFile != null) {
 182             listDirectory(mFile);
 183
 184             ((FileDisplayActivity)mContainerActivity).startSyncFolderOperation(mFile);
 185
 186             // restore index and top position
 187             restoreIndexAndTopPosition();
 188
 189         }   // else - should never happen now
 190
 191         return moveCount;
 192     }
 193
 194     /*
 195      * Restore index and position
 196      */
 197     private void restoreIndexAndTopPosition() {
 198         if (mIndexes.size() > 0) {
 199             // needs to be checked; not every browse-up had a browse-down before
 200
 201             int index = mIndexes.remove(mIndexes.size() - 1);
 202
 203             int firstPosition = mFirstPositions.remove(mFirstPositions.size() -1);
 204
 205             int top = mTops.remove(mTops.size() - 1);
 206
 207             mList.setSelectionFromTop(firstPosition, top);
 208
 209             // Move the scroll if the selection is not visible
 210             int indexPosition = mHeightCell*index;
 211             int height = mList.getHeight();
 212
 213             if (indexPosition > height) {
 214                 if (android.os.Build.VERSION.SDK_INT >= 11)
 215                 {
 216                     mList.smoothScrollToPosition(index);
 217                 }
 218                 else if (android.os.Build.VERSION.SDK_INT >= 8)
 219                 {
 220                     mList.setSelectionFromTop(index, 0);
 221                 }
 222
 223             }
 224         }
 225     }
 226
 227     /*
 228      * Save index and top position
 229      */
 230     private void saveIndexAndTopPosition(int index) {
 231
 232         mIndexes.add(index);
 233
 234         int firstPosition = mList.getFirstVisiblePosition();
 235         mFirstPositions.add(firstPosition);
 236
 237         View view = mList.getChildAt(0);
 238         int top = (view == null) ? 0 : view.getTop() ;
 239
 240         mTops.add(top);
 241
 242         // Save the height of a cell
 243         mHeightCell = (view == null || mHeightCell != 0) ? mHeightCell : view.getHeight();
 244     }
 245
 246     @Override
 247     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 248         OCFile file = (OCFile) mAdapter.getItem(position);
 249         if (file != null) {
 250             if (file.isFolder()) {
 251                 // update state and view of this fragment
 252                 listDirectory(file);
 253                 // then, notify parent activity to let it update its state and view, and other fragments
 254                 mContainerActivity.onBrowsedDownTo(file);
 255                 // save index and top position
 256                 saveIndexAndTopPosition(position);
 257
 258             } else { /// Click on a file
 259                 if (PreviewImageFragment.canBePreviewed(file)) {
 260                     // preview image - it handles the download, if needed
 261                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 262
 263                 } else if (file.isDown()) {
 264                     if (PreviewMediaFragment.canBePreviewed(file)) {
 265                         // media preview
 266                         ((FileDisplayActivity)mContainerActivity).startMediaPreview(file, 0, true);
 267                     } else {
 268                         mContainerActivity.getFileOperationsHelper().openFile(file);
 269                     }
 270
 271                 } else {
 272                     // automatic download, preview on finish
 273                     ((FileDisplayActivity)mContainerActivity).startDownloadForPreview(file);
 274                 }
 275
 276             }
 277
 278         } else {
 279             Log_OC.d(TAG, "Null object in ListAdapter!!");
 280         }
 281
 282     }
 283
 284     /**
 285      * {@inheritDoc}
 286      */
 287     @Override
 288     public void onCreateContextMenu (ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 289         super.onCreateContextMenu(menu, v, menuInfo);
 290         MenuInflater inflater = getSherlockActivity().getMenuInflater();
 291         inflater.inflate(R.menu.file_actions_menu, menu);
 292         AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 293         OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 294
 295         if (mContainerActivity.getStorageManager() != null) {
 296             FileMenuFilter mf = new FileMenuFilter(
 297                 targetFile,
 298                 mContainerActivity.getStorageManager().getAccount(),
 299                 mContainerActivity,
 300                 getSherlockActivity()
 301             );
 302             mf.filter(menu);
 303         }
 304
 305         /// additional restrictions for this fragment
 306         // TODO allow in the future 'open with' for previewable files
 307         MenuItem item = menu.findItem(R.id.action_open_file_with);
 308         if (item != null) {
 309             item.setVisible(false);
 310             item.setEnabled(false);
 311         }
 312         /// TODO break this direct dependency on FileDisplayActivity... if possible
 313         FileFragment frag = ((FileDisplayActivity)getSherlockActivity()).getSecondFragment();
 314         if (frag != null && frag instanceof FileDetailFragment &&
 315                 frag.getFile().getFileId() == targetFile.getFileId()) {
 316             item = menu.findItem(R.id.action_see_details);
 317             if (item != null) {
 318                 item.setVisible(false);
 319                 item.setEnabled(false);
 320             }
 321         }
 322
 323
 324     }
 325
 326
 327     /**
 328      * {@inhericDoc}
 329      */
 330     @Override
 331     public boolean onContextItemSelected (MenuItem item) {
 332         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 333         mTargetFile = (OCFile) mAdapter.getItem(info.position);
 334         switch (item.getItemId()) {
 335             case R.id.action_share_file: {
 336                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 337                 return true;
 338             }
 339             case R.id.action_unshare_file: {
 340                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 341                 return true;
 342             }
 343             case R.id.action_rename_file: {
 344                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 345                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 346                 return true;
 347             }
 348             case R.id.action_remove_file: {
 349                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 350                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 351                 return true;
 352             }
 353             case R.id.action_download_file:
 354             case R.id.action_sync_file: {
 355                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 356                 return true;
 357             }
 358             case R.id.action_cancel_download:
 359             case R.id.action_cancel_upload: {
 360                 ((FileDisplayActivity)mContainerActivity).cancelTransference(mTargetFile);
 361                 return true;
 362             }
 363             case R.id.action_see_details: {
 364                 mContainerActivity.showDetails(mTargetFile);
 365                 return true;
 366             }
 367             case R.id.action_send_file: {
 368                 // Obtain the file
 369                 if (!mTargetFile.isDown()) {  // Download the file
 370                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 371                     ((FileDisplayActivity)mContainerActivity).startDownloadForSending(mTargetFile);
 372
 373                 } else {
 374                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 375                 }
 376                 return true;
 377             }
 378             default:
 379                 return super.onContextItemSelected(item);
 380         }
 381     }
 382
 383
 384     /**
 385      * Use this to query the {@link OCFile} that is currently
 386      * being displayed by this fragment
 387      * @return The currently viewed OCFile
 388      */
 389     public OCFile getCurrentFile(){
 390         return mFile;
 391     }
 392
 393     /**
 394      * Calls {@link OCFileListFragment#listDirectory(OCFile)} with a null parameter
 395      */
 396     public void listDirectory(){
 397         listDirectory(null);
 398     }
 399
 400     /**
 401      * Lists the given directory on the view. When the input parameter is null,
 402      * it will either refresh the last known directory. list the root
 403      * if there never was a directory.
 404      *
 405      * @param directory File to be listed
 406      */
 407     public void listDirectory(OCFile directory) {
 408         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 409         if (storageManager != null) {
 410
 411             // Check input parameters for null
 412             if(directory == null){
 413                 if(mFile != null){
 414                     directory = mFile;
 415                 } else {
 416                     directory = storageManager.getFileByPath("/");
 417                     if (directory == null) return; // no files, wait for sync
 418                 }
 419             }
 420
 421
 422             // If that's not a directory -> List its parent
 423             if(!directory.isFolder()){
 424                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 425                 directory = storageManager.getFileById(directory.getParentId());
 426             }
 427
 428             mAdapter.swapDirectory(directory, storageManager);
 429             if (mFile == null || !mFile.equals(directory)) {
 430                 mList.setSelectionFromTop(0, 0);
 431             }
 432             mFile = directory;
 433         }
 434     }
 435
 436 }