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