git.gag.com Git - debian/openrocket/blob - android/src/net/sf/openrocket/android/filebrowser/SimpleFileBrowser.java

   1 package net.sf.openrocket.android.filebrowser;\r
   2 \r
   3 import java.io.File;\r
   4 import java.io.FileFilter;\r
   5 import java.util.ArrayList;\r
   6 import java.util.Arrays;\r
   7 import java.util.Comparator;\r
   8 import java.util.List;\r
   9 \r
  10 import net.sf.openrocket.R;\r
  11 import net.sf.openrocket.android.actionbarcompat.ActionBarListActivity;\r
  12 import android.app.AlertDialog;\r
  13 import android.app.Dialog;\r
  14 import android.content.DialogInterface;\r
  15 import android.content.Intent;\r
  16 import android.content.SharedPreferences;\r
  17 import android.content.res.Resources;\r
  18 import android.net.Uri;\r
  19 import android.os.Bundle;\r
  20 import android.os.Environment;\r
  21 import android.preference.PreferenceManager;\r
  22 import android.view.View;\r
  23 import android.view.ViewGroup;\r
  24 import android.widget.BaseAdapter;\r
  25 import android.widget.ImageView;\r
  26 import android.widget.ListView;\r
  27 import android.widget.TextView;\r
  28 \r
  29 public class SimpleFileBrowser extends ActionBarListActivity {\r
  30 \r
  31         private List<File> path = null;\r
  32         private final static File root = new File("/");\r
  33 \r
  34         private File previousDirectory = root;\r
  35         \r
  36         private String baseDirPrefKey;\r
  37         private String baseDirName;\r
  38 \r
  39         private boolean showOnlyOrkFiles;\r
  40         \r
  41         private static final OrkFileFilter filter = new OrkFileFilter();\r
  42         private static final Comparator<String> sorter = new AlphanumComparator();\r
  43 \r
  44         /** Called when the activity is first created. */\r
  45         @Override\r
  46         public void onCreate(Bundle savedInstanceState) {\r
  47                 super.onCreate(savedInstanceState);\r
  48                 setContentView(R.layout.simplefilebrowser);\r
  49 \r
  50                 Resources resources = this.getResources();\r
  51                 baseDirPrefKey = resources.getString(R.string.PreferenceFileBrowserBaseDirectory);\r
  52                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);\r
  53 \r
  54                 String showOnlyOrkFilesKey = resources.getString(R.string.PreferenceShowOnlyOrkFiles);\r
  55                 showOnlyOrkFiles = pref.getBoolean(showOnlyOrkFilesKey, false);\r
  56 \r
  57                 baseDirName = pref.getString(baseDirPrefKey, Environment.getExternalStorageDirectory().getAbsolutePath() );\r
  58                 getDir( new File(baseDirName) );\r
  59         }\r
  60 \r
  61         private static class OrkFileFilter implements FileFilter {\r
  62 \r
  63                 /* (non-Javadoc)\r
  64                  * @see java.io.FileFilter#accept(java.io.File)\r
  65                  */\r
  66                 @Override\r
  67                 public boolean accept(File arg0) {\r
  68                         if ( arg0.isDirectory() ) { \r
  69                                 return true;\r
  70                         }\r
  71                         return isOrk(arg0);\r
  72                 }\r
  73 \r
  74                 public boolean isOrk(File arg0) {\r
  75                         if ( arg0.getName().endsWith(".ork") ) {\r
  76                                 return true;\r
  77                         }\r
  78                         return false;\r
  79                 }\r
  80         }\r
  81 \r
  82         private static class FileComparator implements Comparator<File> {\r
  83 \r
  84                 /* (non-Javadoc)\r
  85                  * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)\r
  86                  */\r
  87                 @Override\r
  88                 public int compare(File arg0, File arg1) {\r
  89                         // Directories come before files, otherwise alpha.\r
  90                         if ( arg0.isDirectory() ) {\r
  91                                 if ( ! arg1.isDirectory() ) {\r
  92                                         return -1;\r
  93                                 }\r
  94                                 return sorter.compare(arg0.getName(), arg1.getName());\r
  95                         }\r
  96 \r
  97                         // arg0 is not a directory.\r
  98                         if ( arg1.isDirectory() ) {\r
  99                                 return 1;\r
 100                         }\r
 101 \r
 102                         return sorter.compare(arg0.getName(), arg1.getName());\r
 103                 }\r
 104 \r
 105         }\r
 106 \r
 107         private void getDir(final File dirPath) {\r
 108                 \r
 109                 // A little sanity check.  It could be possible the directory saved in the preference\r
 110                 // is no longer mounted, is not a directory (any more), or cannot be read.\r
 111                 // if any of these are the case, we display a little dialog, then revert to the\r
 112                 // previousDirectory.\r
 113                 if ( !dirPath.exists() || !dirPath.isDirectory() || !dirPath.canRead() ) {\r
 114                         \r
 115                         AlertDialog.Builder builder = new AlertDialog.Builder(this);\r
 116                         builder.setTitle("Unable to open directory " + dirPath.getAbsolutePath() );\r
 117                         builder.setCancelable(true);\r
 118                         builder.setOnCancelListener( new Dialog.OnCancelListener() {\r
 119 \r
 120                                 @Override\r
 121                                 public void onCancel(DialogInterface arg0) {\r
 122                                         if ( root.getAbsolutePath().equals(dirPath.getAbsolutePath()) ) {\r
 123                                                 SimpleFileBrowser.this.finish();\r
 124                                         } else {\r
 125                                                 SimpleFileBrowser.this.getDir( previousDirectory );\r
 126                                         }\r
 127                                 }\r
 128                                 \r
 129                         });\r
 130                         builder.show();\r
 131                         return;\r
 132                 }\r
 133                 \r
 134                 previousDirectory = dirPath;\r
 135                 \r
 136                 setTitle(dirPath.getAbsolutePath());\r
 137                 path = new ArrayList<File>();\r
 138 \r
 139                 File[] files = dirPath.listFiles((showOnlyOrkFiles) ? filter : null );\r
 140 \r
 141                 boolean hasUp = false;\r
 142                 if ( !dirPath.getAbsolutePath().equals("/")) {\r
 143                         path.add(root);\r
 144                         path.add( dirPath.getParentFile() );\r
 145                         hasUp = true;\r
 146                 }\r
 147 \r
 148                 Arrays.sort(files, new FileComparator() );\r
 149                 for( File file : files ) {\r
 150                         path.add(file);\r
 151                 }\r
 152 \r
 153                 DirectoryList fileList = new DirectoryList(hasUp, path);\r
 154                 setListAdapter(fileList);\r
 155 \r
 156         }\r
 157 \r
 158         @Override\r
 159         protected void onListItemClick(ListView l, View v, int position, long id) {\r
 160                 final File file = path.get(position);\r
 161                 if (file.isDirectory()) {\r
 162                         if (file.canRead())\r
 163                                 getDir(path.get(position));\r
 164                         else {\r
 165                                 new AlertDialog.Builder(this).setIcon(R.drawable.or_launcher)\r
 166                                 .setTitle("[" + file.getName() + "] folder can't be read!")\r
 167                                 .setPositiveButton("OK",\r
 168                                                 new DialogInterface.OnClickListener() {\r
 169                                         @Override\r
 170                                         public void onClick(DialogInterface dialog, int which) {\r
 171                                                 // TODO Auto-generated method stub\r
 172                                         }\r
 173                                 }).show();\r
 174                         }\r
 175                 }\r
 176                 else\r
 177                 {\r
 178                         Intent resultData = new Intent(Intent.ACTION_VIEW);\r
 179                         resultData.setData( Uri.fromFile(file) );\r
 180                         setResult(RESULT_OK,resultData);\r
 181                         finish();\r
 182                 }\r
 183         }\r
 184 \r
 185         private class DirectoryList extends BaseAdapter {\r
 186 \r
 187                 List<File> listing;\r
 188                 boolean hasUp;\r
 189 \r
 190                 DirectoryList( boolean hasUp ,List<File> listing ) {\r
 191                         this.listing = listing;\r
 192                         this.hasUp = hasUp;\r
 193                 }\r
 194 \r
 195                 @Override\r
 196                 public int getCount() {\r
 197                         return listing.size();\r
 198                 }\r
 199 \r
 200                 @Override\r
 201                 public Object getItem(int arg0) {\r
 202                         return listing.get(arg0);\r
 203                 }\r
 204 \r
 205                 @Override\r
 206                 public long getItemId(int position) {\r
 207                         return position;\r
 208                 }\r
 209 \r
 210                 @Override\r
 211                 public View getView(int position, View convertView, ViewGroup parent) {\r
 212                         if ( convertView == null ) {\r
 213                                 convertView = getLayoutInflater().inflate(R.layout.filebrowser_list_item, parent, false);\r
 214                         }\r
 215 \r
 216                         File file = (File) getItem(position);\r
 217 \r
 218                         // Set the name of the field.\r
 219                         {\r
 220                                 String fileName = file.getName();\r
 221                                 if ( hasUp ) {\r
 222                                         if (position == 0 ) {\r
 223                                                 fileName = root.getAbsolutePath();\r
 224                                         } else if (position == 1) {\r
 225                                                 fileName = "..";\r
 226                                         }\r
 227                                 }\r
 228 \r
 229                                 ((TextView) convertView.findViewById(R.id.filebrowser_list_item_name)).setText(fileName);\r
 230                         }\r
 231                         \r
 232                         // Set the "type icon"  directory, ork file, or none.\r
 233                         {\r
 234                                 ImageView v = (ImageView) (convertView.findViewById(R.id.filebrowser_list_item_typeicon));\r
 235                                 if ( file.isDirectory() ) {\r
 236                                         v.setVisibility(View.VISIBLE);\r
 237                                         v.setImageResource(R.drawable.ic_directory);\r
 238                                 } else if ( filter.isOrk( file ) ) {\r
 239                                         v.setVisibility(View.VISIBLE);\r
 240                                         v.setImageResource(R.drawable.or_launcher);\r
 241                                 } else {\r
 242                                         v.setVisibility(View.INVISIBLE);\r
 243                                 }\r
 244                         }\r
 245 \r
 246                         // Set the "base directory" thing.\r
 247                         {\r
 248                                 ImageView v = (ImageView) (convertView.findViewById(R.id.filebrowser_list_item_homeicon));\r
 249                                 if ( !file.isDirectory() ) {\r
 250                                         v.setVisibility(View.INVISIBLE);\r
 251                                         v.setClickable(false);\r
 252                                 } else {\r
 253                                         v.setVisibility(View.VISIBLE);\r
 254                                         if ( baseDirName.equals( file.getAbsolutePath() ) )  {\r
 255                                                 v.setSelected(true);\r
 256                                         } else {\r
 257                                                 v.setSelected(false);\r
 258                                                 v.setClickable(true);\r
 259                                                 v.setOnClickListener( new ChangeBaseDirectory(file.getAbsolutePath()));\r
 260                                         }\r
 261                                 }\r
 262                         }\r
 263                         return convertView;\r
 264                 }\r
 265         }\r
 266 \r
 267         private class ChangeBaseDirectory implements View.OnClickListener {\r
 268 \r
 269                 private final String dirname;\r
 270                 \r
 271                 ChangeBaseDirectory ( String dirname ) {\r
 272                         this.dirname = dirname;\r
 273                 }\r
 274                 \r
 275                 @Override\r
 276                 public void onClick(View v) {\r
 277                         if ( v.isSelected() == false ) {\r
 278                                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(SimpleFileBrowser.this);\r
 279                                 baseDirName = dirname;\r
 280                                 pref.edit().putString(baseDirPrefKey, dirname).apply();\r
 281                                 SimpleFileBrowser.this.getDir(new File(dirname));\r
 282                         }\r
 283                 }\r
 284                 \r
 285         }\r
 286         \r
 287 }\r