src/com/owncloud/android/ui/adapter/FileListListAdapter.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.adapter;
  19
  20 import java.io.File;
  21 import java.io.IOException;
  22 import java.lang.ref.WeakReference;
  23 //import java.net.URLEncoder;
  24 import java.util.Vector;
  25
  26 import android.accounts.Account;
  27 import android.accounts.AuthenticatorException;
  28 import android.accounts.OperationCanceledException;
  29 import android.content.Context;
  30 import android.content.res.Resources;
  31 import android.graphics.Bitmap;
  32 import android.graphics.Bitmap.CompressFormat;
  33 import android.graphics.BitmapFactory;
  34 import android.graphics.drawable.BitmapDrawable;
  35 import android.graphics.drawable.Drawable;
  36 import android.media.ThumbnailUtils;
  37 import android.os.AsyncTask;
  38 import android.util.TypedValue;
  39 import android.view.LayoutInflater;
  40 import android.view.View;
  41 import android.view.ViewGroup;
  42 import android.widget.BaseAdapter;
  43 import android.widget.ImageView;
  44 import android.widget.ListAdapter;
  45 import android.widget.ListView;
  46 import android.widget.TextView;
  47
  48 import com.owncloud.android.R;
  49 import com.owncloud.android.authentication.AccountUtils;
  50 import com.owncloud.android.datamodel.FileDataStorageManager;
  51 import com.owncloud.android.datamodel.OCFile;
  52 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  53 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  54 import com.owncloud.android.lib.common.OwnCloudAccount;
  55 import com.owncloud.android.lib.common.OwnCloudClient;
  56 import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
  57 import com.owncloud.android.lib.common.accounts.AccountUtils.AccountNotFoundException;
  58 import com.owncloud.android.ui.activity.ComponentsGetter;
  59 import com.owncloud.android.utils.DisplayUtils;
  60
  61 /*
  62 import org.apache.http.HttpEntity;
  63 import org.apache.http.HttpResponse;
  64 import org.apache.http.auth.AuthScope;
  65 import org.apache.http.auth.UsernamePasswordCredentials;
  66 import org.apache.http.client.methods.HttpGet;
  67 import org.apache.http.impl.client.DefaultHttpClient;
  68 import org.apache.http.util.EntityUtils;
  69 */
  70
  71
  72 /**
  73  * This Adapter populates a ListView with all files and folders in an ownCloud
  74  * instance.
  75  *
  76  * @author Bartek Przybylski
  77  * @Author Tobias Kaminsky
  78  *
  79  */
  80 public class FileListListAdapter extends BaseAdapter implements ListAdapter {
  81     private final static String PERMISSION_SHARED_WITH_ME = "S";
  82
  83     private Context mContext;
  84     private OCFile mFile = null;
  85     private Vector<OCFile> mFiles = null;
  86     private boolean mJustFolders;
  87
  88     private FileDataStorageManager mStorageManager;
  89     private Account mAccount;
  90     private ComponentsGetter mTransferServiceGetter;
  91
  92     private final Object thumbnailDiskCacheLock = new Object();
  93     private DiskLruImageCache mThumbnailCache;
  94     private boolean mThumbnailCacheStarting = true;
  95     private static final int DISK_CACHE_SIZE = 1024 * 1024 * 10; // 10MB
  96     private static final CompressFormat mCompressFormat = CompressFormat.JPEG;
  97     private static final int mCompressQuality = 70;
  98     private OwnCloudClient mClient;
  99     private Bitmap defaultImg;
 100
 101     public FileListListAdapter(
 102             boolean justFolders,
 103             Context context,
 104             ComponentsGetter transferServiceGetter
 105             ) {
 106
 107         mJustFolders = justFolders;
 108         mContext = context;
 109         mAccount = AccountUtils.getCurrentOwnCloudAccount(mContext);
 110         mTransferServiceGetter = transferServiceGetter;
 111         defaultImg = BitmapFactory.decodeResource(mContext.getResources(),
 112                     DisplayUtils.getResourceId("image/png", "default.png"));
 113
 114         // Initialise disk cache on background thread
 115         new InitDiskCacheTask().execute();
 116     }
 117
 118     class InitDiskCacheTask extends AsyncTask<File, Void, Void> {
 119         @Override
 120         protected Void doInBackground(File... params) {
 121             synchronized (thumbnailDiskCacheLock) {
 122                 mThumbnailCache = new DiskLruImageCache(mContext, "thumbnailCache",
 123                                     DISK_CACHE_SIZE, mCompressFormat, mCompressQuality);
 124
 125                 try {
 126                     OwnCloudAccount ocAccount = new OwnCloudAccount(mAccount, mContext);
 127                     mClient = OwnCloudClientManagerFactory.getDefaultSingleton().
 128                             getClientFor(ocAccount, mContext);
 129                 } catch (AccountNotFoundException e) {
 130                     // TODO Auto-generated catch block
 131                     e.printStackTrace();
 132                 } catch (AuthenticatorException e) {
 133                     // TODO Auto-generated catch block
 134                     e.printStackTrace();
 135                 } catch (OperationCanceledException e) {
 136                     // TODO Auto-generated catch block
 137                     e.printStackTrace();
 138                 } catch (IOException e) {
 139                     // TODO Auto-generated catch block
 140                     e.printStackTrace();
 141                 }
 142
 143                 mThumbnailCacheStarting = false; // Finished initialization
 144                 thumbnailDiskCacheLock.notifyAll(); // Wake any waiting threads
 145             }
 146             return null;
 147         }
 148     }
 149
 150     static class AsyncDrawable extends BitmapDrawable {
 151         private final WeakReference<ThumbnailGenerationTask> bitmapWorkerTaskReference;
 152
 153         public AsyncDrawable(Resources res, Bitmap bitmap,
 154                 ThumbnailGenerationTask bitmapWorkerTask) {
 155             super(res, bitmap);
 156             bitmapWorkerTaskReference =
 157                 new WeakReference<ThumbnailGenerationTask>(bitmapWorkerTask);
 158         }
 159
 160         public ThumbnailGenerationTask getBitmapWorkerTask() {
 161             return bitmapWorkerTaskReference.get();
 162         }
 163     }
 164
 165     class ThumbnailGenerationTask extends AsyncTask<OCFile, Void, Bitmap> {
 166         private final WeakReference<ImageView> imageViewReference;
 167         private OCFile file;
 168
 169
 170         public ThumbnailGenerationTask(ImageView imageView) {
 171          // Use a WeakReference to ensure the ImageView can be garbage collected
 172             imageViewReference = new WeakReference<ImageView>(imageView);
 173         }
 174
 175         // Decode image in background.
 176         @Override
 177         protected Bitmap doInBackground(OCFile... params) {
 178             file = params[0];
 179             final String imageKey = String.valueOf(file.getRemoteId());
 180
 181             // Check disk cache in background thread
 182             Bitmap thumbnail = getBitmapFromDiskCache(imageKey);
 183
 184             // Not found in disk cache
 185             if (thumbnail == null) {
 186                 // Converts dp to pixel
 187                 Resources r = mContext.getResources();
 188                 int px = (int) Math.round(TypedValue.applyDimension(
 189                         TypedValue.COMPLEX_UNIT_DIP, 150, r.getDisplayMetrics()
 190                 ));
 191
 192                 if (file.isDown()){
 193                     Bitmap bitmap = BitmapFactory.decodeFile(file.getStoragePath());
 194                     thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 195
 196                     // Add thumbnail to cache
 197                     addBitmapToCache(imageKey, thumbnail);
 198
 199                 } else {
 200                     // Download thumbnail from server
 201                     // Commented out as maybe changes to client library are needed
 202 //                    DefaultHttpClient httpclient = new DefaultHttpClient();
 203 //                    try {
 204 //                        httpclient.getCredentialsProvider().setCredentials(
 205 //                                new AuthScope(mClient.getBaseUri().toString().replace("https://", ""), 443),
 206 //                                new UsernamePasswordCredentials(mClient.getCredentials().getUsername(), mClient.getCredentials().getAuthToken()));
 207 //
 208 //
 209 //                        HttpGet httpget = new HttpGet(mClient.getBaseUri() + "/ocs/v1.php/thumbnail?x=50&y=50&path=" + URLEncoder.encode(file.getRemotePath(), "UTF-8"));
 210 //                        HttpResponse response = httpclient.execute(httpget);
 211 //                        HttpEntity entity = response.getEntity();
 212 //
 213 //                        if (entity != null) {
 214 //                            byte[] bytes = EntityUtils.toByteArray(entity);
 215 //                            Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
 216 //                            thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 217 //
 218 //                            // Add thumbnail to cache
 219 //                            if (thumbnail != null){
 220 //                                addBitmapToCache(imageKey, thumbnail);
 221 //                            }
 222 //                        }
 223 //                    } catch(Exception e){
 224 //                        e.printStackTrace();
 225 //                    }finally {
 226 //                        httpclient.getConnectionManager().shutdown();
 227 //                    }
 228                 }
 229             }
 230             return thumbnail;
 231         }
 232
 233         protected void onPostExecute(Bitmap bitmap){
 234             if (isCancelled()) {
 235                 bitmap = null;
 236             }
 237
 238             if (imageViewReference != null && bitmap != null) {
 239                 final ImageView imageView = imageViewReference.get();
 240                 final ThumbnailGenerationTask bitmapWorkerTask =
 241                         getBitmapWorkerTask(imageView);
 242                 if (this == bitmapWorkerTask && imageView != null) {
 243                     imageView.setImageBitmap(bitmap);
 244                 }
 245             }
 246         }
 247     }
 248
 249     public void addBitmapToCache(String key, Bitmap bitmap) {
 250         synchronized (thumbnailDiskCacheLock) {
 251             if (mThumbnailCache != null && mThumbnailCache.getBitmap(key) == null) {
 252                 mThumbnailCache.put(key, bitmap);
 253             }
 254         }
 255     }
 256
 257     public Bitmap getBitmapFromDiskCache(String key) {
 258         synchronized (thumbnailDiskCacheLock) {
 259             // Wait while disk cache is started from background thread
 260             while (mThumbnailCacheStarting) {
 261                 try {
 262                     thumbnailDiskCacheLock.wait();
 263                 } catch (InterruptedException e) {}
 264             }
 265             if (mThumbnailCache != null) {
 266                 return (Bitmap) mThumbnailCache.getBitmap(key);
 267             }
 268         }
 269         return null;
 270     }
 271
 272     @Override
 273     public boolean areAllItemsEnabled() {
 274         return true;
 275     }
 276
 277     @Override
 278     public boolean isEnabled(int position) {
 279         return true;
 280     }
 281
 282     @Override
 283     public int getCount() {
 284         return mFiles != null ? mFiles.size() : 0;
 285     }
 286
 287     @Override
 288     public Object getItem(int position) {
 289         if (mFiles == null || mFiles.size() <= position)
 290             return null;
 291         return mFiles.get(position);
 292     }
 293
 294     @Override
 295     public long getItemId(int position) {
 296         if (mFiles == null || mFiles.size() <= position)
 297             return 0;
 298         return mFiles.get(position).getFileId();
 299     }
 300
 301     @Override
 302     public int getItemViewType(int position) {
 303         return 0;
 304     }
 305
 306     @Override
 307     public View getView(int position, View convertView, ViewGroup parent) {
 308         View view = convertView;
 309         if (view == null) {
 310             LayoutInflater inflator = (LayoutInflater) mContext
 311                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 312             view = inflator.inflate(R.layout.list_item, null);
 313         }
 314
 315         if (mFiles != null && mFiles.size() > position) {
 316             OCFile file = mFiles.get(position);
 317             TextView fileName = (TextView) view.findViewById(R.id.Filename);
 318             String name = file.getFileName();
 319
 320             fileName.setText(name);
 321             ImageView fileIcon = (ImageView) view.findViewById(R.id.imageView1);
 322             ImageView sharedIconV = (ImageView) view.findViewById(R.id.sharedIcon);
 323             ImageView sharedWithMeIconV = (ImageView) view.findViewById(R.id.sharedWithMeIcon);
 324             sharedWithMeIconV.setVisibility(View.GONE);
 325
 326             ImageView localStateView = (ImageView) view.findViewById(R.id.imageView2);
 327             localStateView.bringToFront();
 328             FileDownloaderBinder downloaderBinder =
 329                     mTransferServiceGetter.getFileDownloaderBinder();
 330             FileUploaderBinder uploaderBinder = mTransferServiceGetter.getFileUploaderBinder();
 331             if (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file)) {
 332                 localStateView.setImageResource(R.drawable.downloading_file_indicator);
 333                 localStateView.setVisibility(View.VISIBLE);
 334             } else if (uploaderBinder != null && uploaderBinder.isUploading(mAccount, file)) {
 335                 localStateView.setImageResource(R.drawable.uploading_file_indicator);
 336                 localStateView.setVisibility(View.VISIBLE);
 337             } else if (file.isDown()) {
 338                 localStateView.setImageResource(R.drawable.local_file_indicator);
 339                 localStateView.setVisibility(View.VISIBLE);
 340             } else {
 341                 localStateView.setVisibility(View.INVISIBLE);
 342             }
 343
 344             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 345             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 346             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 347
 348             if (!file.isFolder()) {
 349                 fileSizeV.setVisibility(View.VISIBLE);
 350                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 351                 lastModV.setVisibility(View.VISIBLE);
 352                 lastModV.setText(
 353                         DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp())
 354                 );
 355                 // this if-else is needed even thoe fav icon is visible by default
 356                 // because android reuses views in listview
 357                 if (!file.keepInSync()) {
 358                     view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 359                 } else {
 360                     view.findViewById(R.id.imageView3).setVisibility(View.VISIBLE);
 361                 }
 362
 363                 ListView parentList = (ListView)parent;
 364                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 365                     checkBoxV.setVisibility(View.GONE);
 366                 } else {
 367                     if (parentList.isItemChecked(position)) {
 368                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 369                     } else {
 370                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 371                     }
 372                     checkBoxV.setVisibility(View.VISIBLE);
 373                 }
 374
 375                 // get Thumbnail if file is image
 376                 if (file.isImage()){
 377                      // Thumbnail in Cache?
 378                     Bitmap thumbnail = getBitmapFromDiskCache(String.valueOf(file.getRemoteId()));
 379                     if (thumbnail != null){
 380                         fileIcon.setImageBitmap(thumbnail);
 381                     } else {
 382                         // generate new Thumbnail
 383                         if (cancelPotentialWork(file, fileIcon)) {
 384                             final ThumbnailGenerationTask task =
 385                                     new ThumbnailGenerationTask(fileIcon);
 386                             final AsyncDrawable asyncDrawable =
 387                                     new AsyncDrawable(mContext.getResources(), defaultImg, task);
 388                             fileIcon.setImageDrawable(asyncDrawable);
 389                             task.execute(file);
 390                         }
 391                     }
 392                 } else {
 393                     fileIcon.setImageResource(
 394                             DisplayUtils.getResourceId(file.getMimetype(), file.getFileName())
 395                     );
 396                 }
 397
 398                 if (checkIfFileIsSharedWithMe(file)) {
 399                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 400                 }
 401             }
 402             else {
 403                 fileSizeV.setVisibility(View.INVISIBLE);
 404                 //fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 405                 lastModV.setVisibility(View.VISIBLE);
 406                 lastModV.setText(
 407                         DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp())
 408                 );
 409                 checkBoxV.setVisibility(View.GONE);
 410                 view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 411
 412                 if (checkIfFileIsSharedWithMe(file)) {
 413                     fileIcon.setImageResource(R.drawable.shared_with_me_folder);
 414                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 415                 } else {
 416                     fileIcon.setImageResource(
 417                             DisplayUtils.getResourceId(file.getMimetype(), file.getFileName())
 418                     );
 419                 }
 420
 421                 // If folder is sharedByLink, icon folder must be changed to
 422                 // folder-public one
 423                 if (file.isShareByLink()) {
 424                     fileIcon.setImageResource(R.drawable.folder_public);
 425                 }
 426             }
 427
 428             if (file.isShareByLink()) {
 429                 sharedIconV.setVisibility(View.VISIBLE);
 430             } else {
 431                 sharedIconV.setVisibility(View.GONE);
 432             }
 433         }
 434
 435         return view;
 436     }
 437
 438     public static boolean cancelPotentialWork(OCFile file, ImageView imageView) {
 439         final ThumbnailGenerationTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 440
 441         if (bitmapWorkerTask != null) {
 442             final OCFile bitmapData = bitmapWorkerTask.file;
 443             // If bitmapData is not yet set or it differs from the new data
 444             if (bitmapData == null || bitmapData != file) {
 445                 // Cancel previous task
 446                 bitmapWorkerTask.cancel(true);
 447             } else {
 448                 // The same work is already in progress
 449                 return false;
 450             }
 451         }
 452         // No task associated with the ImageView, or an existing task was cancelled
 453         return true;
 454     }
 455
 456     private static ThumbnailGenerationTask getBitmapWorkerTask(ImageView imageView) {
 457         if (imageView != null) {
 458             final Drawable drawable = imageView.getDrawable();
 459             if (drawable instanceof AsyncDrawable) {
 460                 final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 461                 return asyncDrawable.getBitmapWorkerTask();
 462             }
 463          }
 464          return null;
 465      }
 466
 467     @Override
 468     public int getViewTypeCount() {
 469         return 1;
 470     }
 471
 472     @Override
 473     public boolean hasStableIds() {
 474         return true;
 475     }
 476
 477     @Override
 478     public boolean isEmpty() {
 479         return (mFiles == null || mFiles.isEmpty());
 480     }
 481
 482     /**
 483      * Change the adapted directory for a new one
 484      * @param directory                 New file to adapt. Can be NULL, meaning
 485      *                                  "no content to adapt".
 486      * @param updatedStorageManager     Optional updated storage manager; used to replace
 487      *                                  mStorageManager if is different (and not NULL)
 488      */
 489     public void swapDirectory(OCFile directory, FileDataStorageManager updatedStorageManager) {
 490         mFile = directory;
 491         if (updatedStorageManager != null && updatedStorageManager != mStorageManager) {
 492             mStorageManager = updatedStorageManager;
 493             mAccount = AccountUtils.getCurrentOwnCloudAccount(mContext);
 494         }
 495         if (mStorageManager != null) {
 496             mFiles = mStorageManager.getFolderContent(mFile);
 497             if (mJustFolders) {
 498                 mFiles = getFolders(mFiles);
 499             }
 500         } else {
 501             mFiles = null;
 502         }
 503         notifyDataSetChanged();
 504     }
 505
 506
 507     /**
 508      * Filter for getting only the folders
 509      * @param files
 510      * @return Vector<OCFile>
 511      */
 512     public Vector<OCFile> getFolders(Vector<OCFile> files) {
 513         Vector<OCFile> ret = new Vector<OCFile>();
 514         OCFile current = null;
 515         for (int i=0; i<files.size(); i++) {
 516             current = files.get(i);
 517             if (current.isFolder()) {
 518                 ret.add(current);
 519             }
 520         }
 521         return ret;
 522     }
 523
 524
 525     /**
 526      * Check if parent folder does not include 'S' permission and if file/folder
 527      * is shared with me
 528      *
 529      * @param file: OCFile
 530      * @return boolean: True if it is shared with me and false if it is not
 531      */
 532     private boolean checkIfFileIsSharedWithMe(OCFile file) {
 533         return (mFile.getPermissions() != null
 534                 && !mFile.getPermissions().contains(PERMISSION_SHARED_WITH_ME)
 535                 && file.getPermissions() != null
 536                 && file.getPermissions().contains(PERMISSION_SHARED_WITH_ME));
 537     }
 538 }