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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 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.util.Arrays;
  22 import java.util.Comparator;
  23
  24 import com.owncloud.android.DisplayUtils;
  25 import com.owncloud.android.R;
  26
  27
  28 import android.content.Context;
  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 /**
  39  * This Adapter populates a ListView with all files and directories contained
  40  * in a local directory
  41  *
  42  * @author David A. Velasco
  43  *
  44  */
  45 public class LocalFileListAdapter extends BaseAdapter implements ListAdapter {
  46
  47     private Context mContext;
  48     private File mDirectory;
  49     private File[] mFiles = null;
  50
  51     public LocalFileListAdapter(File directory, Context context) {
  52         mContext = context;
  53         swapDirectory(directory);
  54     }
  55
  56     @Override
  57     public boolean areAllItemsEnabled() {
  58         return true;
  59     }
  60
  61     @Override
  62     public boolean isEnabled(int position) {
  63         return true;
  64     }
  65
  66     @Override
  67     public int getCount() {
  68         return mFiles != null ? mFiles.length : 0;
  69     }
  70
  71     @Override
  72     public Object getItem(int position) {
  73         if (mFiles == null || mFiles.length <= position)
  74             return null;
  75         return mFiles[position];
  76     }
  77
  78     @Override
  79     public long getItemId(int position) {
  80         return mFiles != null && mFiles.length <= position ? position : -1;
  81     }
  82
  83     @Override
  84     public int getItemViewType(int position) {
  85         return 0;
  86     }
  87
  88     @Override
  89     public View getView(int position, View convertView, ViewGroup parent) {
  90         View view = convertView;
  91         if (view == null) {
  92             LayoutInflater inflator = (LayoutInflater) mContext
  93                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  94             view = inflator.inflate(R.layout.list_item, null);
  95         }
  96         if (mFiles != null && mFiles.length > position) {
  97             File file = mFiles[position];
  98
  99             TextView fileName = (TextView) view.findViewById(R.id.Filename);
 100             String name = file.getName();
 101             fileName.setText(name);
 102
 103             ImageView fileIcon = (ImageView) view.findViewById(R.id.imageView1);
 104             if (!file.isDirectory()) {
 105                 fileIcon.setImageResource(R.drawable.file);
 106             } else {
 107                 fileIcon.setImageResource(R.drawable.ic_menu_archive);
 108             }
 109
 110             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 111             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 112             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 113             if (!file.isDirectory()) {
 114                 fileSizeV.setVisibility(View.VISIBLE);
 115                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.length()));
 116                 lastModV.setVisibility(View.VISIBLE);
 117                 lastModV.setText(DisplayUtils.unixTimeToHumanReadable(file.lastModified()));
 118                 ListView parentList = (ListView)parent;
 119                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 120                     checkBoxV.setVisibility(View.GONE);
 121                 } else {
 122                     if (parentList.isItemChecked(position)) {
 123                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 124                     } else {
 125                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 126                     }
 127                     checkBoxV.setVisibility(View.VISIBLE);
 128                 }
 129
 130             } else {
 131                 fileSizeV.setVisibility(View.GONE);
 132                 lastModV.setVisibility(View.GONE);
 133                 checkBoxV.setVisibility(View.GONE);
 134             }
 135
 136             view.findViewById(R.id.imageView2).setVisibility(View.INVISIBLE);   // not GONE; the alignment changes; ugly way to keep it
 137             view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 138         }
 139
 140         return view;
 141     }
 142
 143     @Override
 144     public int getViewTypeCount() {
 145         return 1;
 146     }
 147
 148     @Override
 149     public boolean hasStableIds() {
 150         return false;
 151     }
 152
 153     @Override
 154     public boolean isEmpty() {
 155         return (mFiles == null || mFiles.length == 0);
 156     }
 157
 158     /**
 159      * Change the adapted directory for a new one
 160      * @param directory     New file to adapt. Can be NULL, meaning "no content to adapt".
 161      */
 162     public void swapDirectory(File directory) {
 163         mDirectory = directory;
 164         mFiles = (mDirectory != null ? mDirectory.listFiles() : null);
 165         if (mFiles != null) {
 166             Arrays.sort(mFiles, new Comparator<File>() {
 167                 @Override
 168                 public int compare(File lhs, File rhs) {
 169                     if (lhs.isDirectory() && !rhs.isDirectory()) {
 170                         return -1;
 171                     } else if (!lhs.isDirectory() && rhs.isDirectory()) {
 172                         return 1;
 173                     }
 174                     return compareNames(lhs, rhs);
 175                 }
 176
 177                 private int compareNames(File lhs, File rhs) {
 178                     return lhs.getName().toLowerCase().compareTo(rhs.getName().toLowerCase());
 179                 }
 180
 181             });
 182         }
 183         notifyDataSetChanged();
 184     }
 185 }