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package de.danoeh.antennapod.asynctask;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import org.xmlpull.v1.XmlPullParserException;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.AsyncTask;
import android.util.Log;
import de.danoeh.antennapod.AppConfig;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.opml.OpmlElement;
import de.danoeh.antennapod.opml.OpmlReader;
public class OpmlImportWorker extends
AsyncTask<Void, Void, ArrayList<OpmlElement>> {
private static final String TAG = "OpmlImportWorker";
private Context context;
private Exception exception;
private ProgressDialog progDialog;
private Reader mReader;
public OpmlImportWorker(Context context, Reader reader) {
super();
this.context = context;
this.mReader=reader;
}
@Override
protected ArrayList<OpmlElement> doInBackground(Void... params) {
if (AppConfig.DEBUG)
Log.d(TAG, "Starting background work");
if (mReader==null) {
return null;
}
OpmlReader opmlReader = new OpmlReader();
try {
ArrayList<OpmlElement> result = opmlReader.readDocument(mReader);
mReader.close();
return result;
} catch (XmlPullParserException e) {
e.printStackTrace();
exception = e;
return null;
} catch (IOException e) {
e.printStackTrace();
exception = e;
return null;
}
}
@Override
protected void onPostExecute(ArrayList<OpmlElement> result) {
progDialog.dismiss();
if (exception != null) {
if (AppConfig.DEBUG)
Log.d(TAG,
"An error occured while trying to parse the opml document");
AlertDialog.Builder alert = new AlertDialog.Builder(context);
alert.setTitle(R.string.error_label);
alert.setMessage(context.getString(R.string.opml_reader_error)
+ exception.getMessage());
alert.setNeutralButton(android.R.string.ok, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alert.create().show();
}
}
@Override
protected void onPreExecute() {
progDialog = new ProgressDialog(context);
progDialog.setMessage(context.getString(R.string.reading_opml_label));
progDialog.setIndeterminate(true);
progDialog.setCancelable(false);
progDialog.show();
}
public boolean wasSuccessful() {
return exception != null;
}
@SuppressLint("NewApi")
public void executeAsync() {
if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
executeOnExecutor(THREAD_POOL_EXECUTOR);
} else {
execute();
}
}
}
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