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.net.URLEncoder;
  23 import java.util.Vector;
  24
  25 import android.accounts.Account;
  26 import android.accounts.AuthenticatorException;
  27 import android.accounts.OperationCanceledException;
  28 import android.content.Context;
  29 import android.content.res.Resources;
  30 import android.graphics.Bitmap;
  31 import android.graphics.Bitmap.CompressFormat;
  32 import android.graphics.BitmapFactory;
  33 import android.media.ThumbnailUtils;
  34 import android.os.AsyncTask;
  35 import android.util.TypedValue;
  36 import android.view.LayoutInflater;
  37 import android.view.View;
  38 import android.view.ViewGroup;
  39 import android.widget.BaseAdapter;
  40 import android.widget.ImageView;
  41 import android.widget.ListAdapter;
  42 import android.widget.ListView;
  43 import android.widget.TextView;
  44
  45 import com.owncloud.android.R;
  46 import com.owncloud.android.authentication.AccountUtils;
  47 import com.owncloud.android.datamodel.FileDataStorageManager;
  48 import com.owncloud.android.datamodel.OCFile;
  49 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  50 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  51 import com.owncloud.android.lib.common.OwnCloudAccount;
  52 import com.owncloud.android.lib.common.OwnCloudClient;
  53 import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
  54 import com.owncloud.android.lib.common.accounts.AccountUtils.AccountNotFoundException;
  55 import com.owncloud.android.ui.activity.ComponentsGetter;
  56 import com.owncloud.android.utils.DisplayUtils;
  57
  58 import org.apache.http.HttpEntity;
  59 import org.apache.http.HttpResponse;
  60 import org.apache.http.auth.AuthScope;
  61 import org.apache.http.auth.UsernamePasswordCredentials;
  62 import org.apache.http.client.methods.HttpGet;
  63 import org.apache.http.impl.client.DefaultHttpClient;
  64 import org.apache.http.util.EntityUtils;
  65
  66
  67 /**
  68  * This Adapter populates a ListView with all files and folders in an ownCloud
  69  * instance.
  70  *
  71  * @author Bartek Przybylski
  72  *
  73  */
  74 public class FileListListAdapter extends BaseAdapter implements ListAdapter {
  75     private final static String PERMISSION_SHARED_WITH_ME = "S";
  76
  77     private Context mContext;
  78     private OCFile mFile = null;
  79     private Vector<OCFile> mFiles = null;
  80
  81     private FileDataStorageManager mStorageManager;
  82     private Account mAccount;
  83     private ComponentsGetter mTransferServiceGetter;
  84     private final Object mDiskCacheLock = new Object();
  85     private DiskLruImageCache mDiskLruCache;
  86     private boolean mDiskCacheStarting = true;
  87     private static final int DISK_CACHE_SIZE = 1024 * 1024 * 10; // 10MB
  88     private CompressFormat mCompressFormat = CompressFormat.JPEG;
  89     private int mCompressQuality = 70;
  90     private OwnCloudClient mClient;
  91
  92     public FileListListAdapter(Context context, ComponentsGetter transferServiceGetter) {
  93         mContext = context;
  94         mAccount = AccountUtils.getCurrentOwnCloudAccount(mContext);
  95         mTransferServiceGetter = transferServiceGetter;
  96
  97         // Initialise disk cache on background thread
  98         new InitDiskCacheTask().execute();
  99     }
 100
 101     class InitDiskCacheTask extends AsyncTask<File, Void, Void> {
 102         @Override
 103         protected Void doInBackground(File... params) {
 104             synchronized (mDiskCacheLock) {
 105                 mDiskLruCache = new DiskLruImageCache(mContext, "thumbnailCache", DISK_CACHE_SIZE, mCompressFormat,mCompressQuality);
 106
 107                 try {
 108                     OwnCloudAccount ocAccount = new OwnCloudAccount(mAccount, mContext);
 109                     mClient = OwnCloudClientManagerFactory.getDefaultSingleton().
 110                             getClientFor(ocAccount, mContext);
 111                 } catch (AccountNotFoundException e) {
 112                     // TODO Auto-generated catch block
 113                     e.printStackTrace();
 114                 } catch (AuthenticatorException e) {
 115                     // TODO Auto-generated catch block
 116                     e.printStackTrace();
 117                 } catch (OperationCanceledException e) {
 118                     // TODO Auto-generated catch block
 119                     e.printStackTrace();
 120                 } catch (IOException e) {
 121                     // TODO Auto-generated catch block
 122                     e.printStackTrace();
 123                 }
 124
 125                 mDiskCacheStarting = false; // Finished initialization
 126                 mDiskCacheLock.notifyAll(); // Wake any waiting threads
 127             }
 128             return null;
 129         }
 130     }
 131
 132     class BitmapWorkerTask extends AsyncTask<OCFile, Void, Bitmap> {
 133         private final ImageView fileIcon;
 134
 135         public BitmapWorkerTask(ImageView fileIcon) {
 136             this.fileIcon = fileIcon;
 137         }
 138
 139         // Decode image in background.
 140         @Override
 141         protected Bitmap doInBackground(OCFile... params) {
 142             OCFile file = params[0];
 143             final String imageKey = String.valueOf(file.getRemoteId());
 144
 145             // Check disk cache in background thread
 146             Bitmap thumbnail = getBitmapFromDiskCache(imageKey);
 147
 148             // Not found in disk cache
 149             if (thumbnail == null) {
 150                 // Converts dp to pixel
 151                 Resources r = mContext.getResources();
 152                 int px = (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 150, r.getDisplayMetrics()));
 153
 154                 if (file.isDown()){
 155                     Bitmap bitmap = BitmapFactory.decodeFile(file.getStoragePath());
 156                     thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 157
 158                     // Add thumbnail to cache
 159                     addBitmapToCache(imageKey, thumbnail);
 160
 161                 } else {
 162                     // Download thumbnail from server
 163                     DefaultHttpClient httpclient = new DefaultHttpClient();
 164                     try {
 165                         httpclient.getCredentialsProvider().setCredentials(
 166                                 new AuthScope(mClient.getBaseUri().toString().replace("https://", ""), 443),
 167                                 new UsernamePasswordCredentials(mClient.getCredentials().getUsername(), mClient.getCredentials().getAuthToken()));
 168
 169
 170                         // TODO change to user preview.png
 171                         HttpGet httpget = new HttpGet(mClient.getBaseUri() + "/ocs/v1.php/thumbnail?path=" + URLEncoder.encode(file.getRemotePath(), "UTF-8"));
 172                         HttpResponse response = httpclient.execute(httpget);
 173                         HttpEntity entity = response.getEntity();
 174
 175                         if (entity != null) {
 176                             byte[] bytes = EntityUtils.toByteArray(entity);
 177                             Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
 178                             thumbnail = ThumbnailUtils.extractThumbnail(bitmap, px, px);
 179
 180                             // Add thumbnail to cache
 181                             if (thumbnail != null){
 182                                 addBitmapToCache(imageKey, thumbnail);
 183                             }
 184
 185                         }
 186                     } catch(Exception e){
 187                         e.printStackTrace();
 188                     }finally {
 189                         httpclient.getConnectionManager().shutdown();
 190                     }
 191                 }
 192             }
 193             return thumbnail;
 194         }
 195
 196         protected void onPostExecute(Bitmap bitmap){
 197             fileIcon.setImageBitmap(bitmap);
 198         }
 199     }
 200
 201     public void addBitmapToCache(String key, Bitmap bitmap) {
 202         synchronized (mDiskCacheLock) {
 203             if (mDiskLruCache != null && mDiskLruCache.getBitmap(key) == null) {
 204                 mDiskLruCache.put(key, bitmap);
 205             }
 206         }
 207     }
 208
 209     public Bitmap getBitmapFromDiskCache(String key) {
 210         synchronized (mDiskCacheLock) {
 211             // Wait while disk cache is started from background thread
 212             while (mDiskCacheStarting) {
 213                 try {
 214                     mDiskCacheLock.wait();
 215                 } catch (InterruptedException e) {}
 216             }
 217             if (mDiskLruCache != null) {
 218                 return (Bitmap) mDiskLruCache.getBitmap(key);
 219             }
 220         }
 221         return null;
 222     }
 223
 224     @Override
 225     public boolean areAllItemsEnabled() {
 226         return true;
 227     }
 228
 229     @Override
 230     public boolean isEnabled(int position) {
 231         return true;
 232     }
 233
 234     @Override
 235     public int getCount() {
 236         return mFiles != null ? mFiles.size() : 0;
 237     }
 238
 239     @Override
 240     public Object getItem(int position) {
 241         if (mFiles == null || mFiles.size() <= position)
 242             return null;
 243         return mFiles.get(position);
 244     }
 245
 246     @Override
 247     public long getItemId(int position) {
 248         if (mFiles == null || mFiles.size() <= position)
 249             return 0;
 250         return mFiles.get(position).getFileId();
 251     }
 252
 253     @Override
 254     public int getItemViewType(int position) {
 255         return 0;
 256     }
 257
 258     @Override
 259     public View getView(int position, View convertView, ViewGroup parent) {
 260         View view = convertView;
 261         if (view == null) {
 262             LayoutInflater inflator = (LayoutInflater) mContext
 263                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 264             view = inflator.inflate(R.layout.list_item, null);
 265         }
 266
 267         if (mFiles != null && mFiles.size() > position) {
 268             OCFile file = mFiles.get(position);
 269             TextView fileName = (TextView) view.findViewById(R.id.Filename);
 270             String name = file.getFileName();
 271
 272             fileName.setText(name);
 273             ImageView fileIcon = (ImageView) view.findViewById(R.id.imageView1);
 274             ImageView sharedIconV = (ImageView) view.findViewById(R.id.sharedIcon);
 275             ImageView sharedWithMeIconV = (ImageView) view.findViewById(R.id.sharedWithMeIcon);
 276             sharedWithMeIconV.setVisibility(View.GONE);
 277
 278             ImageView localStateView = (ImageView) view.findViewById(R.id.imageView2);
 279             localStateView.bringToFront();
 280             FileDownloaderBinder downloaderBinder = mTransferServiceGetter.getFileDownloaderBinder();
 281             FileUploaderBinder uploaderBinder = mTransferServiceGetter.getFileUploaderBinder();
 282             if (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, file)) {
 283                 localStateView.setImageResource(R.drawable.downloading_file_indicator);
 284                 localStateView.setVisibility(View.VISIBLE);
 285             } else if (uploaderBinder != null && uploaderBinder.isUploading(mAccount, file)) {
 286                 localStateView.setImageResource(R.drawable.uploading_file_indicator);
 287                 localStateView.setVisibility(View.VISIBLE);
 288             } else if (file.isDown()) {
 289                 localStateView.setImageResource(R.drawable.local_file_indicator);
 290                 localStateView.setVisibility(View.VISIBLE);
 291             } else {
 292                 localStateView.setVisibility(View.INVISIBLE);
 293             }
 294
 295             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 296             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 297             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 298
 299             if (!file.isFolder()) {
 300                 fileSizeV.setVisibility(View.VISIBLE);
 301                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 302                 lastModV.setVisibility(View.VISIBLE);
 303                 lastModV.setText(DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp()));
 304                 // this if-else is needed even thoe fav icon is visible by default
 305                 // because android reuses views in listview
 306                 if (!file.keepInSync()) {
 307                     view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 308                 } else {
 309                     view.findViewById(R.id.imageView3).setVisibility(View.VISIBLE);
 310                 }
 311
 312                 ListView parentList = (ListView)parent;
 313                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 314                     checkBoxV.setVisibility(View.GONE);
 315                 } else {
 316                     if (parentList.isItemChecked(position)) {
 317                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 318                     } else {
 319                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 320                     }
 321                     checkBoxV.setVisibility(View.VISIBLE);
 322                 }
 323
 324                 // first set thumbnail according to Mimetype, prevents empty thumbnails
 325                 fileIcon.setImageResource(DisplayUtils.getResourceId(file.getMimetype(), file.getFileName()));
 326
 327                 // get Thumbnail if file is image
 328                 if (file.isImage()){
 329                     // Thumbnail in Cache?
 330                     Bitmap thumbnail = getBitmapFromDiskCache(String.valueOf(file.getRemoteId()));
 331                     if (thumbnail != null){
 332                         fileIcon.setImageBitmap(thumbnail);
 333                     } else {
 334                         // generate new Thumbnail
 335                         new BitmapWorkerTask(fileIcon).execute(file);
 336                     }
 337                 }
 338
 339                 if (checkIfFileIsSharedWithMe(file)) {
 340                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 341                 }
 342             }
 343             else {
 344                 fileSizeV.setVisibility(View.INVISIBLE);
 345                 //fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.getFileLength()));
 346                 lastModV.setVisibility(View.VISIBLE);
 347                 lastModV.setText(DisplayUtils.unixTimeToHumanReadable(file.getModificationTimestamp()));
 348                 checkBoxV.setVisibility(View.GONE);
 349                 view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 350
 351                 if (checkIfFileIsSharedWithMe(file)) {
 352                     fileIcon.setImageResource(R.drawable.shared_with_me_folder);
 353                     sharedWithMeIconV.setVisibility(View.VISIBLE);
 354                 } else {
 355                     fileIcon.setImageResource(DisplayUtils.getResourceId(file.getMimetype(), file.getFileName()));
 356                 }
 357
 358                 // If folder is sharedByLink, icon folder must be changed to
 359                 // folder-public one
 360                 if (file.isShareByLink()) {
 361                     fileIcon.setImageResource(R.drawable.folder_public);
 362                 }
 363             }
 364
 365             if (file.isShareByLink()) {
 366                 sharedIconV.setVisibility(View.VISIBLE);
 367             } else {
 368                 sharedIconV.setVisibility(View.GONE);
 369             }
 370         }
 371
 372         return view;
 373     }
 374
 375     @Override
 376     public int getViewTypeCount() {
 377         return 1;
 378     }
 379
 380     @Override
 381     public boolean hasStableIds() {
 382         return true;
 383     }
 384
 385     @Override
 386     public boolean isEmpty() {
 387         return (mFiles == null || mFiles.isEmpty());
 388     }
 389
 390     /**
 391      * Change the adapted directory for a new one
 392      * @param directory                 New file to adapt. Can be NULL, meaning "no content to adapt".
 393      * @param updatedStorageManager     Optional updated storage manager; used to replace mStorageManager if is different (and not NULL)
 394      */
 395     public void swapDirectory(OCFile directory, FileDataStorageManager updatedStorageManager) {
 396         mFile = directory;
 397         if (updatedStorageManager != null && updatedStorageManager != mStorageManager) {
 398             mStorageManager = updatedStorageManager;
 399             mAccount = AccountUtils.getCurrentOwnCloudAccount(mContext);
 400         }
 401         if (mStorageManager != null) {
 402             mFiles = mStorageManager.getFolderContent(mFile);
 403         } else {
 404             mFiles = null;
 405         }
 406         notifyDataSetChanged();
 407     }
 408
 409     /**
 410      * Check if parent folder does not include 'S' permission and if file/folder
 411      * is shared with me
 412      *
 413      * @param file: OCFile
 414      * @return boolean: True if it is shared with me and false if it is not
 415      */
 416     private boolean checkIfFileIsSharedWithMe(OCFile file) {
 417         return (mFile.getPermissions() != null && !mFile.getPermissions().contains(PERMISSION_SHARED_WITH_ME)
 418                 && file.getPermissions() != null && file.getPermissions().contains(PERMISSION_SHARED_WITH_ME));
 419     }
 420 }