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
 176                     if (bitmap != null) {
 177                         thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 178
 179                         // Add thumbnail to cache
 180                         addBitmapToCache(imageKey, thumbnail);
 181                     }
 182
 183                 } else {
 184                     // Download thumbnail from server
 185                     // Commented out as maybe changes to client library are needed
 186 //                    DefaultHttpClient httpclient = new DefaultHttpClient();
 187 //                    try {
 188 //                        httpclient.getCredentialsProvider().setCredentials(
 189 //                                new AuthScope(mClient.getBaseUri().toString().replace("https://", ""), 443),
 190 //                                new UsernamePasswordCredentials(mClient.getCredentials().getUsername(), mClient.getCredentials().getAuthToken()));
 191 //
 192 //
 193 //                        HttpGet httpget = new HttpGet(mClient.getBaseUri() + "/ocs/v1.php/thumbnail?x=50&y=50&path=" + URLEncoder.encode(file.getRemotePath(), "UTF-8"));
 194 //                        HttpResponse response = httpclient.execute(httpget);
 195 //                        HttpEntity entity = response.getEntity();
 196 //
 197 //                        if (entity != null) {
 198 //                            byte[] bytes = EntityUtils.toByteArray(entity);
 199 //                            Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
 200 //                            thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 201 //
 202 //                            // Add thumbnail to cache
 203 //                            if (thumbnail != null){
 204 //                                addBitmapToCache(imageKey, thumbnail);
 205 //                            }
 206 //                        }
 207 //                    } catch(Exception e){
 208 //                        e.printStackTrace();
 209 //                    }finally {
 210 //                        httpclient.getConnectionManager().shutdown();
 211 //                    }
 212                 }
 213             }
 214             return thumbnail;
 215         }
 216
 217         protected void onPostExecute(Bitmap bitmap){
 218             if (isCancelled()) {
 219                 bitmap = null;
 220             }
 221
 222             if (imageViewReference != null && bitmap != null) {
 223                 final ImageView imageView = imageViewReference.get();
 224                 final ThumbnailGenerationTask bitmapWorkerTask =
 225                         getBitmapWorkerTask(imageView);
 226                 if (this == bitmapWorkerTask && imageView != null) {
 227                     imageView.setImageBitmap(bitmap);
 228                 }
 229             }
 230         }
 231     }
 232
 233     public void addBitmapToCache(String key, Bitmap bitmap) {
 234         synchronized (thumbnailDiskCacheLock) {
 235             if (mThumbnailCache != null && mThumbnailCache.getBitmap(key) == null) {
 236                 mThumbnailCache.put(key, bitmap);
 237             }
 238         }
 239     }
 240
 241     public Bitmap getBitmapFromDiskCache(String key) {
 242         synchronized (thumbnailDiskCacheLock) {
 243             // Wait while disk cache is started from background thread
 244             while (mThumbnailCacheStarting) {
 245                 try {
 246                     thumbnailDiskCacheLock.wait();
 247                 } catch (InterruptedException e) {}
 248             }
 249             if (mThumbnailCache != null) {
 250                 return (Bitmap) mThumbnailCache.getBitmap(key);
 251             }
 252         }
 253         return null;
 254     }
 255
 256     @Override
 257     public boolean areAllItemsEnabled() {
 258         return true;
 259     }
 260
 261     @Override
 262     public boolean isEnabled(int position) {
 263         return true;
 264     }
 265
 266     @Override
 267     public int getCount() {
 268         return mFiles != null ? mFiles.size() : 0;
 269     }
 270
 271     @Override
 272     public Object getItem(int position) {
 273         if (mFiles == null || mFiles.size() <= position)
 274             return null;
 275         return mFiles.get(position);
 276     }
 277
 278     @Override
 279     public long getItemId(int position) {
 280         if (mFiles == null || mFiles.size() <= position)
 281             return 0;
 282         return mFiles.get(position).getFileId();
 283     }
 284
 285     @Override
 286     public int getItemViewType(int position) {
 287         return 0;
 288     }
 289
 290     @Override
 291     public View getView(int position, View convertView, ViewGroup parent) {
 292         View view = convertView;
 293         if (view == null) {
 294             LayoutInflater inflator = (LayoutInflater) mContext
 295                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 296             view = inflator.inflate(R.layout.list_item, null);
 297         }
 298
 299         if (mFiles != null && mFiles.size() > position) {
 300             OCFile file = mFiles.get(position);
 301             TextView fileName = (TextView) view.findViewById(R.id.Filename);
 302             String name = file.getFileName();
 303
 304             fileName.setText(name);
 305             ImageView fileIcon = (ImageView) view.findViewById(R.id.imageView1);
 306             ImageView sharedIconV = (ImageView) view.findViewById(R.id.sharedIcon);
 307             ImageView sharedWithMeIconV = (ImageView) view.findViewById(R.id.sharedWithMeIcon);
 308             sharedWithMeIconV.setVisibility(View.GONE);
 309
 310             ImageView localStateView = (ImageView) view.findViewById(R.id.imageView2);
 311             localStateView.bringToFront();
 312             FileDownloaderBinder downloaderBinder =
 313                     mTransferServiceGetter.getFileDownloaderBinder();
 314             FileUploaderBinder uploaderBinder = mTransferServiceGetter.getFileUploaderBinder();
 315             if (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file)) {
 316                 localStateView.setImageResource(R.drawable.downloading_file_indicator);
 317                 localStateView.setVisibility(View.VISIBLE);
 318             } else if (uploaderBinder != null && uploaderBinder.isUploading(mAccount, file)) {
 319                 localStateView.setImageResource(R.drawable.uploading_file_indicator);
 320                 localStateView.setVisibility(View.VISIBLE);
 321             } else if (file.isDown()) {
 322                 localStateView.setImageResource(R.drawable.local_file_indicator);
 323                 localStateView.setVisibility(View.VISIBLE);
 324             } else {
 325                 localStateView.setVisibility(View.INVISIBLE);
 326             }
 327
 328             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 329             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 330             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 331
 332             if (!file.isFolder()) {
 333                 fileSizeV.setVisibility(View.VISIBLE);
 334                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 335                 lastModV.setVisibility(View.VISIBLE);
 336                 lastModV.setText(
 337                         DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp())
 338                 );
 339                 // this if-else is needed even thoe fav icon is visible by default
 340                 // because android reuses views in listview
 341                 if (!file.keepInSync()) {
 342                     view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 343                 } else {
 344                     view.findViewById(R.id.imageView3).setVisibility(View.VISIBLE);
 345                 }
 346
 347                 ListView parentList = (ListView)parent;
 348                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 349                     checkBoxV.setVisibility(View.GONE);
 350                 } else {
 351                     if (parentList.isItemChecked(position)) {
 352                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 353                     } else {
 354                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 355                     }
 356                     checkBoxV.setVisibility(View.VISIBLE);
 357                 }
 358
 359                 // get Thumbnail if file is image
 360                 if (file.isImage()){
 361                      // Thumbnail in Cache?
 362                     Bitmap thumbnail = getBitmapFromDiskCache(String.valueOf(file.getRemoteId()));
 363                     if (thumbnail != null){
 364                         fileIcon.setImageBitmap(thumbnail);
 365                     } else {
 366                         // generate new Thumbnail
 367                         if (cancelPotentialWork(file, fileIcon)) {
 368                             final ThumbnailGenerationTask task =
 369                                     new ThumbnailGenerationTask(fileIcon);
 370                             final AsyncDrawable asyncDrawable =
 371                                     new AsyncDrawable(mContext.getResources(), defaultImg, task);
 372                             fileIcon.setImageDrawable(asyncDrawable);
 373                             task.execute(file);
 374                         }
 375                     }
 376                 } else {
 377                     fileIcon.setImageResource(
 378                             DisplayUtils.getResourceId(file.getMimetype(), file.getFileName())
 379                     );
 380                 }
 381
 382                 if (checkIfFileIsSharedWithMe(file)) {
 383                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 384                 }
 385             }
 386             else {
 387                 fileSizeV.setVisibility(View.INVISIBLE);
 388                 //fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 389                 lastModV.setVisibility(View.VISIBLE);
 390                 lastModV.setText(
 391                         DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp())
 392                 );
 393                 checkBoxV.setVisibility(View.GONE);
 394                 view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 395
 396                 if (checkIfFileIsSharedWithMe(file)) {
 397                     fileIcon.setImageResource(R.drawable.shared_with_me_folder);
 398                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 399                 } else {
 400                     fileIcon.setImageResource(
 401                             DisplayUtils.getResourceId(file.getMimetype(), file.getFileName())
 402                     );
 403                 }
 404
 405                 // If folder is sharedByLink, icon folder must be changed to
 406                 // folder-public one
 407                 if (file.isShareByLink()) {
 408                     fileIcon.setImageResource(R.drawable.folder_public);
 409                 }
 410             }
 411
 412             if (file.isShareByLink()) {
 413                 sharedIconV.setVisibility(View.VISIBLE);
 414             } else {
 415                 sharedIconV.setVisibility(View.GONE);
 416             }
 417         }
 418
 419         return view;
 420     }
 421
 422     public static boolean cancelPotentialWork(OCFile file, ImageView imageView) {
 423         final ThumbnailGenerationTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 424
 425         if (bitmapWorkerTask != null) {
 426             final OCFile bitmapData = bitmapWorkerTask.file;
 427             // If bitmapData is not yet set or it differs from the new data
 428             if (bitmapData == null || bitmapData != file) {
 429                 // Cancel previous task
 430                 bitmapWorkerTask.cancel(true);
 431             } else {
 432                 // The same work is already in progress
 433                 return false;
 434             }
 435         }
 436         // No task associated with the ImageView, or an existing task was cancelled
 437         return true;
 438     }
 439
 440     private static ThumbnailGenerationTask getBitmapWorkerTask(ImageView imageView) {
 441         if (imageView != null) {
 442             final Drawable drawable = imageView.getDrawable();
 443             if (drawable instanceof AsyncDrawable) {
 444                 final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 445                 return asyncDrawable.getBitmapWorkerTask();
 446             }
 447          }
 448          return null;
 449      }
 450
 451     @Override
 452     public int getViewTypeCount() {
 453         return 1;
 454     }
 455
 456     @Override
 457     public boolean hasStableIds() {
 458         return true;
 459     }
 460
 461     @Override
 462     public boolean isEmpty() {
 463         return (mFiles == null || mFiles.isEmpty());
 464     }
 465
 466     /**
 467      * Change the adapted directory for a new one
 468      * @param directory                 New file to adapt. Can be NULL, meaning
 469      *                                  "no content to adapt".
 470      * @param updatedStorageManager     Optional updated storage manager; used to replace
 471      *                                  mStorageManager if is different (and not NULL)
 472      */
 473     public void swapDirectory(OCFile directory, FileDataStorageManager updatedStorageManager) {
 474         mFile = directory;
 475         if (updatedStorageManager != null && updatedStorageManager != mStorageManager) {
 476             mStorageManager = updatedStorageManager;
 477             mAccount = AccountUtils.getCurrentOwnCloudAccount(mContext);
 478         }
 479         if (mStorageManager != null) {
 480             mFiles = mStorageManager.getFolderContent(mFile);
 481             if (mJustFolders) {
 482                 mFiles = getFolders(mFiles);
 483             }
 484         } else {
 485             mFiles = null;
 486         }
 487         notifyDataSetChanged();
 488     }
 489
 490
 491     /**
 492      * Filter for getting only the folders
 493      * @param files
 494      * @return Vector<OCFile>
 495      */
 496     public Vector<OCFile> getFolders(Vector<OCFile> files) {
 497         Vector<OCFile> ret = new Vector<OCFile>();
 498         OCFile current = null;
 499         for (int i=0; i<files.size(); i++) {
 500             current = files.get(i);
 501             if (current.isFolder()) {
 502                 ret.add(current);
 503             }
 504         }
 505         return ret;
 506     }
 507
 508
 509     /**
 510      * Check if parent folder does not include 'S' permission and if file/folder
 511      * is shared with me
 512      *
 513      * @param file: OCFile
 514      * @return boolean: True if it is shared with me and false if it is not
 515      */
 516     private boolean checkIfFileIsSharedWithMe(OCFile file) {
 517         return (mFile.getPermissions() != null
 518                 && !mFile.getPermissions().contains(PERMISSION_SHARED_WITH_ME)
 519                 && file.getPermissions() != null
 520                 && file.getPermissions().contains(PERMISSION_SHARED_WITH_ME));
 521     }
 522 }