src/com/owncloud/android/ui/adapter/LocalFileListAdapter.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2011  Bartek Przybylski
   6  *   Copyright (C) 2015 ownCloud Inc.
   7  *
   8  *   This program is free software: you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License version 2,
  10  *   as published by the Free Software Foundation.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  */
  21 package com.owncloud.android.ui.adapter;
  22
  23 import java.io.File;
  24 import java.util.Arrays;
  25 import java.util.Comparator;
  26
  27 import android.content.Context;
  28 import android.graphics.Bitmap;
  29 import android.view.LayoutInflater;
  30 import android.view.View;
  31 import android.view.ViewGroup;
  32 import android.widget.BaseAdapter;
  33 import android.widget.ImageView;
  34 import android.widget.ListAdapter;
  35 import android.widget.ListView;
  36 import android.widget.TextView;
  37
  38 import com.owncloud.android.R;
  39 import com.owncloud.android.datamodel.ThumbnailsCacheManager;
  40 import com.owncloud.android.utils.BitmapUtils;
  41 import com.owncloud.android.utils.DisplayUtils;
  42 import com.owncloud.android.utils.MimetypeIconUtil;
  43
  44 /**
  45  * This Adapter populates a ListView with all files and directories contained
  46  * in a local directory
  47  */
  48 public class LocalFileListAdapter extends BaseAdapter implements ListAdapter {
  49
  50     private Context mContext;
  51     private File mDirectory;
  52     private File[] mFiles = null;
  53
  54     public LocalFileListAdapter(File directory, Context context) {
  55         mContext = context;
  56         swapDirectory(directory);
  57     }
  58
  59     @Override
  60     public boolean areAllItemsEnabled() {
  61         return true;
  62     }
  63
  64     @Override
  65     public boolean isEnabled(int position) {
  66         return true;
  67     }
  68
  69     @Override
  70     public int getCount() {
  71         return mFiles != null ? mFiles.length : 0;
  72     }
  73
  74     @Override
  75     public Object getItem(int position) {
  76         if (mFiles == null || mFiles.length <= position)
  77             return null;
  78         return mFiles[position];
  79     }
  80
  81     @Override
  82     public long getItemId(int position) {
  83         return mFiles != null && mFiles.length <= position ? position : -1;
  84     }
  85
  86     @Override
  87     public int getItemViewType(int position) {
  88         return 0;
  89     }
  90
  91     @Override
  92     public View getView(int position, View convertView, ViewGroup parent) {
  93         View view = convertView;
  94         if (view == null) {
  95             LayoutInflater inflator = (LayoutInflater) mContext
  96                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  97             view = inflator.inflate(R.layout.list_item, null);
  98         }
  99         if (mFiles != null && mFiles.length > position) {
 100             File file = mFiles[position];
 101
 102             TextView fileName = (TextView) view.findViewById(R.id.Filename);
 103             String name = file.getName();
 104             fileName.setText(name);
 105
 106             ImageView fileIcon = (ImageView) view.findViewById(R.id.thumbnail);
 107             if (!file.isDirectory()) {
 108                 fileIcon.setImageResource(R.drawable.file);
 109             } else {
 110                 fileIcon.setImageResource(R.drawable.ic_menu_archive);
 111             }
 112             fileIcon.setTag(file.hashCode());
 113
 114             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 115             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 116             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 117             if (!file.isDirectory()) {
 118                 fileSizeV.setVisibility(View.VISIBLE);
 119                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.length()));
 120
 121                 lastModV.setVisibility(View.VISIBLE);
 122                 lastModV.setText(DisplayUtils.unixTimeToHumanReadable(file.lastModified()));
 123                 ListView parentList = (ListView) parent;
 124                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 125                     checkBoxV.setVisibility(View.GONE);
 126                 } else {
 127                     if (parentList.isItemChecked(position)) {
 128                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 129                     } else {
 130                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 131                     }
 132                     checkBoxV.setVisibility(View.VISIBLE);
 133                 }
 134
 135              // get Thumbnail if file is image
 136                 if (BitmapUtils.isImage(file)){
 137                 // Thumbnail in Cache?
 138                     Bitmap thumbnail = ThumbnailsCacheManager.getBitmapFromDiskCache(
 139                             String.valueOf(file.hashCode())
 140                     );
 141                     if (thumbnail != null){
 142                         fileIcon.setImageBitmap(thumbnail);
 143                     } else {
 144
 145                         // generate new Thumbnail
 146                         if (ThumbnailsCacheManager.cancelPotentialWork(file, fileIcon)) {
 147                             final ThumbnailsCacheManager.ThumbnailGenerationTask task =
 148                                     new ThumbnailsCacheManager.ThumbnailGenerationTask(fileIcon);
 149                             if (thumbnail == null) {
 150                                 thumbnail = ThumbnailsCacheManager.mDefaultImg;
 151                             }
 152                             final ThumbnailsCacheManager.AsyncDrawable asyncDrawable =
 153                                         new ThumbnailsCacheManager.AsyncDrawable(
 154                                     mContext.getResources(),
 155                                     thumbnail,
 156                                     task
 157                                         );
 158                             fileIcon.setImageDrawable(asyncDrawable);
 159                             task.execute(file);
 160                         }
 161                     }
 162                 } else {
 163                     fileIcon.setImageResource(MimetypeIconUtil.getFileTypeIconId(null, file.getName()));
 164                 }
 165
 166             } else {
 167                 fileSizeV.setVisibility(View.GONE);
 168                 lastModV.setVisibility(View.GONE);
 169                 checkBoxV.setVisibility(View.GONE);
 170             }
 171
 172             // not GONE; the alignment changes; ugly way to keep it
 173             view.findViewById(R.id.localFileIndicator).setVisibility(View.INVISIBLE);
 174             view.findViewById(R.id.favoriteIcon).setVisibility(View.GONE);
 175
 176             view.findViewById(R.id.sharedIcon).setVisibility(View.GONE);
 177             view.findViewById(R.id.sharedWithMeIcon).setVisibility(View.GONE);
 178         }
 179
 180         return view;
 181     }
 182
 183     @Override
 184     public int getViewTypeCount() {
 185         return 1;
 186     }
 187
 188     @Override
 189     public boolean hasStableIds() {
 190         return false;
 191     }
 192
 193     @Override
 194     public boolean isEmpty() {
 195         return (mFiles == null || mFiles.length == 0);
 196     }
 197
 198     /**
 199      * Change the adapted directory for a new one
 200      * @param directory     New file to adapt. Can be NULL, meaning "no content to adapt".
 201      */
 202     public void swapDirectory(File directory) {
 203         mDirectory = directory;
 204         mFiles = (mDirectory != null ? mDirectory.listFiles() : null);
 205         if (mFiles != null) {
 206             Arrays.sort(mFiles, new Comparator<File>() {
 207                 @Override
 208                 public int compare(File lhs, File rhs) {
 209                     if (lhs.isDirectory() && !rhs.isDirectory()) {
 210                         return -1;
 211                     } else if (!lhs.isDirectory() && rhs.isDirectory()) {
 212                         return 1;
 213                     }
 214                     return compareNames(lhs, rhs);
 215                 }
 216
 217                 private int compareNames(File lhs, File rhs) {
 218                     return lhs.getName().toLowerCase().compareTo(rhs.getName().toLowerCase());
 219                 }
 220
 221             });
 222         }
 223         notifyDataSetChanged();
 224     }
 225 }