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package cgeo.geocaching.files;
import java.io.File;
import java.util.ArrayList;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.ArrayAdapter;
import cgeo.geocaching.R;
import cgeo.geocaching.cgSettings;
import cgeo.geocaching.activity.AbstractListActivity;
public abstract class FileList<T extends ArrayAdapter<File>> extends AbstractListActivity {
private ArrayList<File> files = new ArrayList<File>();
private T adapter = null;
private ProgressDialog waitDialog = null;
private loadFiles searchingThread = null;
private boolean endSearching = false;
private int listId = 1;
final private Handler changeWaitDialogHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg.obj != null && waitDialog != null) {
waitDialog.setMessage(res.getString(R.string.file_searching_in) + " " + (String) msg.obj);
}
}
};
final private Handler loadFilesHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
try {
if (files == null || files.isEmpty()) {
if (waitDialog != null) {
waitDialog.dismiss();
}
showToast(res.getString(R.string.file_list_no_files));
finish();
return;
} else {
if (adapter != null) {
adapter.notifyDataSetChanged();
}
}
if (waitDialog != null) {
waitDialog.dismiss();
}
} catch (Exception e) {
if (waitDialog != null) {
waitDialog.dismiss();
}
Log.e(cgSettings.tag, "cgFileList.loadFilesHandler: " + e.toString());
}
}
};
private String[] extensions;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTheme();
setContentView(R.layout.gpx);
setTitle();
Bundle extras = getIntent().getExtras();
if (extras != null) {
listId = extras.getInt("list");
}
if (listId <= 0) {
listId = 1;
}
setAdapter();
waitDialog = ProgressDialog.show(
this,
res.getString(R.string.file_title_searching),
res.getString(R.string.file_searching),
true,
true,
new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface arg0) {
if (searchingThread != null && searchingThread.isAlive()) {
searchingThread.notifyEnd();
}
if (files.isEmpty()) {
finish();
}
}
}
);
endSearching = false;
searchingThread = new loadFiles();
searchingThread.start();
}
@Override
public void onResume() {
super.onResume();
getSettings().load();
}
protected abstract T getAdapter(ArrayList<File> files);
private void setAdapter() {
if (adapter == null) {
adapter = getAdapter(files);
setListAdapter(adapter);
}
}
/**
* Gets the base folder for file searches
* @return The folder to start the recursive search in
*/
protected abstract String[] getBaseFolders();
/**
* Triggers the deriving class to set the title
*/
protected abstract void setTitle();
private class loadFiles extends Thread {
public void notifyEnd() {
endSearching = true;
}
@Override
public void run() {
ArrayList<File> list = new ArrayList<File>();
try {
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
boolean loaded = false;
for(String baseFolder : getBaseFolders())
{
final File dir = new File(baseFolder);
if (dir.exists() && dir.isDirectory()) {
listDir(list, dir);
if (list.size() > 0) {
loaded = true;
break;
}
}
}
if (!loaded) {
listDir(list, Environment.getExternalStorageDirectory());
}
} else {
Log.w(cgSettings.tag, "No external media mounted.");
}
} catch (Exception e) {
Log.e(cgSettings.tag, "cgFileList.loadFiles.run: " + e.toString());
}
final Message msg = new Message();
msg.obj = "loaded directories";
changeWaitDialogHandler.sendMessage(msg);
files.addAll(list);
list.clear();
loadFilesHandler.sendMessage(new Message());
}
}
private void listDir(ArrayList<File> result, File directory) {
if (directory == null || !directory.isDirectory() || !directory.canRead()) {
return;
}
final File[] files = directory.listFiles();
if (files != null && files.length > 0) {
for (File file : files) {
if (endSearching) {
return;
}
if (!file.canRead()) {
continue;
}
String name = file.getName();
if (file.isFile()) {
for (String ext : extensions) {
int extLength = ext.length();
if (name.length() > extLength && name.substring(name.length() - extLength, name.length()).equalsIgnoreCase(ext)) {
result.add(file); // add file to list
break;
}
}
} else if (file.isDirectory()) {
if (name.charAt(0) == '.') {
continue; // skip hidden directories
}
if (name.length() > 16) {
name = name.substring(0, 14) + "...";
}
final Message msg = new Message();
msg.obj = name;
changeWaitDialogHandler.sendMessage(msg);
listDir(result, file); // go deeper
}
}
}
return;
}
protected FileList(final String extension) {
setExtensions(new String[] {extension});
}
protected FileList(final String[] extensions) {
setExtensions(extensions);
}
private void setExtensions(String[] extensionsIn) {
for (String extension : extensionsIn) {
if (extension.length() == 0 || extension.charAt(0) != '.') {
extension = "." + extension;
}
}
extensions = extensionsIn;
}
}
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