project_files/Android-build/SDL-android-project/src/org/hedgewars/hedgeroid/Downloader/DownloadService.java
/*
* Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game
* Copyright (c) 2011 Richard Deurwaarder <xeli@xelification.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
package org.hedgewars.hedgeroid.Downloader;
import java.util.ArrayList;
import java.util.LinkedList;
import org.hedgewars.hedgeroid.MainActivity;
import org.hedgewars.hedgeroid.R;
import org.hedgewars.hedgeroid.Utils;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.RemoteViews;
public class DownloadService extends Service {
public final static int TASKID_SETUP = 0;
public final static int TASKID_CANCEL = 1;
public final static int TASKID_ADDTASK = 2;
public final static String INTENT_TASKID = "taskId";
public final static String INTENT_TASK = "task";
public static final String PREF_DOWNLOADED = "downloaded";
public static final int MSG_CANCEL = 0;
public static final int MSG_REGISTER_CLIENT = 1;
public static final int MSG_UNREGISTER_CLIENT = 2;
public static final int NOTIFICATION_PROCESSING = 0;
public static final int NOTIFICATION_DONE = 1;
private DownloadAsyncTask asyncExecutor;
private final Messenger messenger = new Messenger(new DownloadHandler());
private NotificationManager nM;
private RemoteViews contentView;
private Notification notification;
private LinkedList<DownloadTask> downloadTasks = new LinkedList<DownloadTask>();
private ArrayList<Messenger> clientList = new ArrayList<Messenger>();
private Message onRegisterMessage = null;
class DownloadHandler extends Handler{
public void handleMessage(Message msg){
switch(msg.what){
case MSG_CANCEL:
asyncExecutor.cancel(false);
break;
case MSG_REGISTER_CLIENT:
clientList.add(msg.replyTo);
if(onRegisterMessage != null){
try {
msg.replyTo.send(Message.obtain(onRegisterMessage));
} catch (RemoteException e) {
e.printStackTrace();
}
}
break;
case MSG_UNREGISTER_CLIENT:
clientList.remove(msg.replyTo);
break;
}
}
}
public IBinder onBind(Intent intent) {
return messenger.getBinder();
}
/**
* This is the main method which controls how DownloadService and DownloadAsyncTask are running
*/
public int onStartCommand(Intent intent, int flags, int startId){
switch(intent.getIntExtra("taskID", TASKID_SETUP)){
case TASKID_SETUP:
nM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notification = new Notification(R.drawable.statusbar, getString(R.string.notification_title), System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT;
contentView = new RemoteViews(getPackageName(), R.layout.notification);
contentView.setProgressBar(R.id.notification_progress, 100, 34, false);
notification.contentView = contentView;
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, DownloadActivity.class), Intent.FLAG_ACTIVITY_NEW_TASK);
notification.contentIntent = contentIntent;
asyncExecutor = new DownloadAsyncTask(this);
break;
case TASKID_ADDTASK:
//Add downloadtask to the queue
DownloadTask task = intent.getParcelableExtra(DownloadService.INTENT_TASK);
downloadTasks.offer(task);
runNextTask();
break;
case TASKID_CANCEL:
asyncExecutor.cancel(false);
break;
}
return 0;
}
private synchronized void runNextTask(){
if(!asyncExecutor.getStatus().equals(AsyncTask.Status.RUNNING)){//if the task isnt running right now...
DownloadTask task = downloadTasks.poll();
if(task == null){
startForeground(NOTIFICATION_PROCESSING, notification);
asyncExecutor.execute(task);
}
}
}
public void onDestroy(){
super.onDestroy();
asyncExecutor.cancel(false);
}
/*
* Callbacks called from the async tasks
*/
//Thread safe method to let clients know the processing is starting and will process int max kbytes
public void start(int max){
onRegisterMessage = Message.obtain(null, DownloadActivity.MSG_START, max, -1);
sendMessageToClients(onRegisterMessage);
}
//periodically gets called by the ASyncTask, we can't tell for sure when it's called
public void update(int progress, int max, String fileName){
progress = (progress/1024);
updateNotification(progress, max, fileName);
sendMessageToClients(Message.obtain(null, DownloadActivity.MSG_UPDATE, progress, max, fileName));
}
//Call back from the ASync task when the task has either run into an error or finished otherwise
public void done(boolean succesful){
if(succesful){
sendMessageToClients(Message.obtain(null, DownloadActivity.MSG_DONE));
}else sendMessageToClients(Message.obtain(null, DownloadActivity.MSG_FAILED));
nM.cancel(NOTIFICATION_PROCESSING);
stopForeground(true);
showDoneNotification();
runNextTask();//see if there are more tasks
}
private void updateNotification(int progress, int max, String fileName){
contentView.setProgressBar(R.id.notification_progress, max, progress, false);
contentView.setTextViewText(R.id.progressbar_sub, String.format("%dkb/%dkb (Compressed sizes)", progress, max));
nM.notify(NOTIFICATION_PROCESSING, notification);
}
private void showDoneNotification(){
String title = getString(R.string.notification_title);
notification = new Notification(R.drawable.icon, title, System.currentTimeMillis());
notification.flags |= Notification.FLAG_AUTO_CANCEL;
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), Intent.FLAG_ACTIVITY_NEW_TASK);
notification.setLatestEventInfo(this, title, getString(R.string.notification_done), contentIntent);
nM.notify(NOTIFICATION_DONE, notification);
}
private void sendMessageToClients(Message msg){
for(Messenger m : clientList){
try {
m.send(Message.obtain(msg));
} catch (RemoteException e) {}//TODO should we catch this properly?
}
}
}