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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   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 import android.content.Context;
  28 import android.view.LayoutInflater;
  29 import android.view.View;
  30 import android.view.ViewGroup;
  31 import android.widget.BaseAdapter;
  32 import android.widget.ImageView;
  33 import android.widget.ListAdapter;
  34 import android.widget.ListView;
  35 import android.widget.TextView;
  36
  37 /**
  38  * This Adapter populates a ListView with all files and directories contained
  39  * in a local directory
  40  *
  41  * @author David A. Velasco
  42  *
  43  */
  44 public class LocalFileListAdapter extends BaseAdapter implements ListAdapter {
  45
  46     private Context mContext;
  47     private File mDirectory;
  48     private File[] mFiles = null;
  49
  50     public LocalFileListAdapter(File directory, Context context) {
  51         mContext = context;
  52         swapDirectory(directory);
  53     }
  54
  55     @Override
  56     public boolean areAllItemsEnabled() {
  57         return true;
  58     }
  59
  60     @Override
  61     public boolean isEnabled(int position) {
  62         return true;
  63     }
  64
  65     @Override
  66     public int getCount() {
  67         return mFiles != null ? mFiles.length : 0;
  68     }
  69
  70     @Override
  71     public Object getItem(int position) {
  72         if (mFiles == null || mFiles.length <= position)
  73             return null;
  74         return mFiles[position];
  75     }
  76
  77     @Override
  78     public long getItemId(int position) {
  79         return mFiles != null && mFiles.length <= position ? position : -1;
  80     }
  81
  82     @Override
  83     public int getItemViewType(int position) {
  84         return 0;
  85     }
  86
  87     @Override
  88     public View getView(int position, View convertView, ViewGroup parent) {
  89         View view = convertView;
  90         if (view == null) {
  91             LayoutInflater inflator = (LayoutInflater) mContext
  92                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  93             view = inflator.inflate(R.layout.list_layout, null);
  94         }
  95         if (mFiles != null && mFiles.length > position) {
  96             File file = mFiles[position];
  97
  98             TextView fileName = (TextView) view.findViewById(R.id.Filename);
  99             String name = file.getName();
 100             fileName.setText(name);
 101
 102             ImageView fileIcon = (ImageView) view.findViewById(R.id.imageView1);
 103             if (!file.isDirectory()) {
 104                 fileIcon.setImageResource(R.drawable.file);
 105             } else {
 106                 fileIcon.setImageResource(R.drawable.ic_menu_archive);
 107             }
 108
 109             TextView fileSizeV = (TextView) view.findViewById(R.id.file_size);
 110             TextView lastModV = (TextView) view.findViewById(R.id.last_mod);
 111             ImageView checkBoxV = (ImageView) view.findViewById(R.id.custom_checkbox);
 112             if (!file.isDirectory()) {
 113                 fileSizeV.setVisibility(View.VISIBLE);
 114                 fileSizeV.setText(DisplayUtils.bytesToHumanReadable(file.length()));
 115                 lastModV.setVisibility(View.VISIBLE);
 116                 lastModV.setText(DisplayUtils.unixTimeToHumanReadable(file.lastModified()));
 117                 ListView parentList = (ListView)parent;
 118                 if (parentList.getChoiceMode() == ListView.CHOICE_MODE_NONE) {
 119                     checkBoxV.setVisibility(View.GONE);
 120                 } else {
 121                     if (parentList.isItemChecked(position)) {
 122                         checkBoxV.setImageResource(android.R.drawable.checkbox_on_background);
 123                     } else {
 124                         checkBoxV.setImageResource(android.R.drawable.checkbox_off_background);
 125                     }
 126                     checkBoxV.setVisibility(View.VISIBLE);
 127                 }
 128
 129             } else {
 130                 fileSizeV.setVisibility(View.GONE);
 131                 lastModV.setVisibility(View.GONE);
 132                 checkBoxV.setVisibility(View.GONE);
 133             }
 134
 135             view.findViewById(R.id.imageView2).setVisibility(View.INVISIBLE);   // not GONE; the alignment changes; ugly way to keep it
 136             view.findViewById(R.id.imageView3).setVisibility(View.GONE);
 137         }
 138
 139         return view;
 140     }
 141
 142     @Override
 143     public int getViewTypeCount() {
 144         return 1;
 145     }
 146
 147     @Override
 148     public boolean hasStableIds() {
 149         return false;
 150     }
 151
 152     @Override
 153     public boolean isEmpty() {
 154         return (mFiles == null || mFiles.length == 0);
 155     }
 156
 157     /**
 158      * Change the adapted directory for a new one
 159      * @param directory     New file to adapt. Can be NULL, meaning "no content to adapt".
 160      */
 161     public void swapDirectory(File directory) {
 162         mDirectory = directory;
 163         mFiles = (mDirectory != null ? mDirectory.listFiles() : null);
 164         if (mFiles != null) {
 165             Arrays.sort(mFiles, new Comparator<File>() {
 166                 @Override
 167                 public int compare(File lhs, File rhs) {
 168                     if (lhs.isDirectory() && !rhs.isDirectory()) {
 169                         return -1;
 170                     } else if (!lhs.isDirectory() && rhs.isDirectory()) {
 171                         return 1;
 172                     }
 173                     return compareNames(lhs, rhs);
 174                 }
 175
 176                 private int compareNames(File lhs, File rhs) {
 177                     return lhs.getName().toLowerCase().compareTo(rhs.getName().toLowerCase());
 178                 }
 179
 180             });
 181         }
 182         notifyDataSetChanged();
 183     }
 184 }