package net.sf.openrocket.android.filebrowser;
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import net.sf.openrocket.R;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.actionbarsherlock.app.SherlockListActivity;
public class SimpleFileBrowser extends SherlockListActivity {
private List<File> path = null;
private final static File root = new File("/");
private File previousDirectory = root;
private String baseDirPrefKey;
private String baseDirName;
private boolean showOnlyOrkFiles;
private static final OrkFileFilter filter = new OrkFileFilter();
private static final Comparator<String> sorter = new AlphanumComparator();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simplefilebrowser);
Resources resources = this.getResources();
baseDirPrefKey = resources.getString(R.string.PreferenceFileBrowserBaseDirectory);
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
String showOnlyOrkFilesKey = resources.getString(R.string.PreferenceShowOnlyOrkFiles);
showOnlyOrkFiles = pref.getBoolean(showOnlyOrkFilesKey, false);
baseDirName = pref.getString(baseDirPrefKey, Environment.getExternalStorageDirectory().getAbsolutePath() );
getDir( new File(baseDirName) );
}
private static class OrkFileFilter implements FileFilter {
/* (non-Javadoc)
* @see java.io.FileFilter#accept(java.io.File)
*/
@Override
public boolean accept(File arg0) {
if ( arg0.isDirectory() ) {
return true;
}
return isOrk(arg0);
}
public boolean isOrk(File arg0) {
if ( arg0.getName().endsWith(".ork") ) {
return true;
}
return false;
}
}
private static class FileComparator implements Comparator<File> {
/* (non-Javadoc)
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
@Override
public int compare(File arg0, File arg1) {
// Directories come before files, otherwise alpha.
if ( arg0.isDirectory() ) {
if ( ! arg1.isDirectory() ) {
return -1;
}
return sorter.compare(arg0.getName(), arg1.getName());
}
// arg0 is not a directory.
if ( arg1.isDirectory() ) {
return 1;
}
return sorter.compare(arg0.getName(), arg1.getName());
}
}
private void getDir(final File dirPath) {
// A little sanity check. It could be possible the directory saved in the preference
// is no longer mounted, is not a directory (any more), or cannot be read.
// if any of these are the case, we display a little dialog, then revert to the
// previousDirectory.
if ( !dirPath.exists() || !dirPath.isDirectory() || !dirPath.canRead() ) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Unable to open directory " + dirPath.getAbsolutePath() );
builder.setCancelable(true);
builder.setOnCancelListener( new Dialog.OnCancelListener() {
@Override
public void onCancel(DialogInterface arg0) {
if ( root.getAbsolutePath().equals(dirPath.getAbsolutePath()) ) {
SimpleFileBrowser.this.finish();
} else {
SimpleFileBrowser.this.getDir( previousDirectory );
}
}
});
builder.show();
return;
}
previousDirectory = dirPath;
setTitle(dirPath.getAbsolutePath());
path = new ArrayList<File>();
File[] files = dirPath.listFiles((showOnlyOrkFiles) ? filter : null );
boolean hasUp = false;
if ( !dirPath.getAbsolutePath().equals("/")) {
path.add(root);
path.add( dirPath.getParentFile() );
hasUp = true;
}
Arrays.sort(files, new FileComparator() );
for( File file : files ) {
path.add(file);
}
DirectoryList fileList = new DirectoryList(hasUp, path);
setListAdapter(fileList);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
final File file = path.get(position);
if (file.isDirectory()) {
if (file.canRead())
getDir(file);
else {
new AlertDialog.Builder(this).setIcon(R.drawable.or_launcher)
.setTitle("[" + file.getName() + "] folder can't be read!")
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
}).show();
}
}
else
{
Intent resultData = new Intent(Intent.ACTION_VIEW);
resultData.setData( Uri.fromFile(file) );
setResult(RESULT_OK,resultData);
finish();
}
}
private class DirectoryList extends BaseAdapter {
List<File> listing;
boolean hasUp;
DirectoryList( boolean hasUp ,List<File> listing ) {
this.listing = listing;
this.hasUp = hasUp;
}
@Override
public int getCount() {
return listing.size();
}
@Override
public Object getItem(int arg0) {
return listing.get(arg0);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if ( convertView == null ) {
convertView = getLayoutInflater().inflate(R.layout.filebrowser_list_item, parent, false);
}
File file = (File) getItem(position);
// Set the name of the field.
{
String fileName = file.getName();
if ( hasUp ) {
if (position == 0 ) {
fileName = root.getAbsolutePath();
} else if (position == 1) {
fileName = "..";
}
}
((TextView) convertView.findViewById(R.id.filebrowser_list_item_name)).setText(fileName);
}
// Set the "type icon" directory, ork file, or none.
{
ImageView v = (ImageView) (convertView.findViewById(R.id.filebrowser_list_item_typeicon));
if ( file.isDirectory() ) {
v.setVisibility(View.VISIBLE);
v.setImageResource(R.drawable.ic_directory);
} else if ( filter.isOrk( file ) ) {
v.setVisibility(View.VISIBLE);
v.setImageResource(R.drawable.or_launcher);
} else {
v.setVisibility(View.INVISIBLE);
}
}
// Set the "favorite directory" thing.
{
ImageView v = (ImageView) (convertView.findViewById(R.id.filebrowser_list_item_homeicon));
if ( file.isDirectory() && hasUp && position > 1 ) {
v.setVisibility(View.VISIBLE);
if ( baseDirName.equals( file.getAbsolutePath() ) ) {
v.setSelected(true);
} else {
v.setSelected(false);
v.setClickable(true);
v.setOnClickListener( new ChangeBaseDirectory(file.getAbsolutePath()));
}
} else {
v.setVisibility(View.INVISIBLE);
v.setClickable(false);
}
}
return convertView;
}
}
private class ChangeBaseDirectory implements View.OnClickListener {
private final String dirname;
ChangeBaseDirectory ( String dirname ) {
this.dirname = dirname;
}
@Override
public void onClick(View v) {
if ( v.isSelected() == false ) {
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(SimpleFileBrowser.this);
baseDirName = dirname;
pref.edit().putString(baseDirPrefKey, dirname).commit();
((BaseAdapter)SimpleFileBrowser.this.getListAdapter()).notifyDataSetChanged();
}
}
}
}