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