/*
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.android.apps.mytracks.io.file.importer;
import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
import com.google.android.apps.mytracks.content.Track;
import com.google.android.apps.mytracks.io.file.TrackFileFormat;
import com.google.android.apps.mytracks.io.file.exporter.KmzTrackExporter;
import com.google.android.apps.mytracks.util.FileUtils;
import com.google.android.apps.mytracks.util.PreferencesUtils;
import com.google.android.apps.mytracks.util.SystemUtils;
import com.google.android.maps.mytracks.R;
import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.PowerManager.WakeLock;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* AsyncTask to import files from the external storage.
*
* @author Jimmy Shih
*/
public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
private static final String TAG = ImportAsyncTask.class.getSimpleName();
private ImportActivity importActivity;
private final boolean importAll;
private final TrackFileFormat trackFileFormat;
private final String path;
private final Context context;
private WakeLock wakeLock;
// true if the AsyncTask has completed
private boolean completed;
// the number of files successfully imported
private int successCount;
// the number of files to import
private int totalCount;
// the last successfully imported track id
private long trackId;
/**
* Creates an AsyncTask.
*
* @param importActivity the activity currently associated with this AsyncTask
* @param importAll true to import all GPX files
* @param trackFileFormat the track file format
* @param path path to import GPX files
*/
public ImportAsyncTask(ImportActivity importActivity, boolean importAll,
TrackFileFormat trackFileFormat, String path) {
this.importActivity = importActivity;
this.importAll = importAll;
this.trackFileFormat = trackFileFormat;
this.path = path;
context = importActivity.getApplicationContext();
completed = false;
successCount = 0;
totalCount = 0;
trackId = -1L;
}
/**
* Sets the current {@link ImportActivity} associated with this AyncTask.
*
* @param importActivity the current {@link ImportActivity}, can be null
*/
public void setActivity(ImportActivity importActivity) {
this.importActivity = importActivity;
if (completed && importActivity != null) {
importActivity.onAsyncTaskCompleted(successCount, totalCount, trackId);
}
}
@Override
protected void onPreExecute() {
if (importActivity != null) {
importActivity.showProgressDialog();
}
}
@Override
protected Boolean doInBackground(Void... params) {
try {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
// Get the wake lock if not recording or paused
boolean isRecording =
PreferencesUtils.getLong(importActivity, R.string.recording_track_id_key)
!= PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
boolean isPaused = PreferencesUtils.getBoolean(importActivity,
R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
if (!isRecording || isPaused) {
wakeLock = SystemUtils.acquireWakeLock(importActivity, wakeLock);
}
List<File> files = getFiles();
totalCount = files.size();
if (totalCount == 0) {
return true;
}
for (int i = 0; i < totalCount; i++) {
if (isCancelled()) {
// If cancelled, return true to show the number of files imported
return true;
}
if (importFile(files.get(i))) {
successCount++;
}
publishProgress(i + 1, totalCount);
}
return true;
} finally {
if (wakeLock != null && wakeLock.isHeld()) {
wakeLock.release();
}
}
}
@Override
protected void onProgressUpdate(Integer... values) {
if (importActivity != null) {
importActivity.setProgressDialogValue(values[0], values[1]);
}
}
@Override
protected void onPostExecute(Boolean result) {
completed = true;
if (importActivity != null) {
importActivity.onAsyncTaskCompleted(successCount, totalCount, trackId);
}
}
@Override
protected void onCancelled() {
completed = true;
if (importActivity != null) {
importActivity.onAsyncTaskCompleted(successCount, totalCount, trackId);
}
}
/**
* Imports a file.
*
* @param file the file
*/
private boolean importFile(final File file) {
FileInputStream fileInputStream = null;
try {
TrackImporter trackImporter;
if (trackFileFormat == TrackFileFormat.KML) {
String extension = FileUtils.getExtension(file.getName());
if (TrackFileFormat.KML.getExtension().equals(extension)) {
trackImporter = new KmlFileTrackImporter(context, -1L);
} else {
MyTracksProviderUtils myTracksProviderUtils = MyTracksProviderUtils.Factory.get(context);
Uri uri = myTracksProviderUtils.insertTrack(new Track());
long newId = Long.parseLong(uri.getLastPathSegment());
trackImporter = new KmzTrackImporter(context, newId);
}
} else {
trackImporter = new GpxFileTrackImporter(context);
}
fileInputStream = new FileInputStream(file);
trackId = trackImporter.importFile(fileInputStream);
return trackId != -1L;
} catch (FileNotFoundException e) {
Log.e(TAG, "Unable to import file", e);
return false;
} finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException e) {
Log.e(TAG, "Unable to close file input stream", e);
}
}
}
}
/**
* Gets a list of files. If importAll is true, returns a list of the files
* under the path directory. If importAll is false, returns a list containing
* just the path file.
*/
private List<File> getFiles() {
List<File> files = new ArrayList<File>();
File file = new File(path);
if (importAll) {
File[] candidates = file.listFiles();
if (candidates != null) {
for (File candidate : candidates) {
if (!FileUtils.isDirectory(candidate)) {
String extension = FileUtils.getExtension(candidate.getName());
if (trackFileFormat == TrackFileFormat.KML && (
TrackFileFormat.KML.getExtension().equals(extension)
|| KmzTrackExporter.KMZ_EXTENSION.equals(extension))) {
files.add(candidate);
} else if (trackFileFormat == TrackFileFormat.GPX
&& TrackFileFormat.GPX.getExtension().equals(extension)) {
files.add(candidate);
}
}
}
}
} else {
files.add(file);
}
return files;
}
}