/*
* Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
*
* This file is part of Loop Habit Tracker.
*
* Loop Habit Tracker 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, either version 3 of the License, or (at your
* option) any later version.
*
* Loop Habit Tracker 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, see <http://www.gnu.org/licenses/>.
*/
package org.isoron.uhabits.tasks;
import android.os.*;
import org.isoron.uhabits.*;
import java.util.*;
import dagger.*;
@Module
public class AndroidTaskRunner implements TaskRunner
{
private final LinkedList<CustomAsyncTask> activeTasks;
private final HashMap<Task, CustomAsyncTask> taskToAsyncTask;
private LinkedList<Listener> listeners;
public AndroidTaskRunner()
{
activeTasks = new LinkedList<>();
taskToAsyncTask = new HashMap<>();
listeners = new LinkedList<>();
}
@Provides
@AppScope
public static TaskRunner provideTaskRunner()
{
return new AndroidTaskRunner();
}
@Override
public void addListener(Listener listener)
{
listeners.add(listener);
}
@Override
public void execute(Task task)
{
task.onAttached(this);
new CustomAsyncTask(task).execute();
}
@Override
public int getActiveTaskCount()
{
return activeTasks.size();
}
@Override
public void publishProgress(Task task, int progress)
{
CustomAsyncTask asyncTask = taskToAsyncTask.get(task);
if (asyncTask == null) return;
asyncTask.publish(progress);
}
@Override
public void removeListener(Listener listener)
{
listeners.remove(listener);
}
private class CustomAsyncTask extends AsyncTask<Void, Integer, Void>
{
private final Task task;
public CustomAsyncTask(Task task)
{
this.task = task;
}
public Task getTask()
{
return task;
}
public void publish(int progress)
{
publishProgress(progress);
}
@Override
protected Void doInBackground(Void... params)
{
task.doInBackground();
return null;
}
@Override
protected void onPostExecute(Void aVoid)
{
task.onPostExecute();
activeTasks.remove(this);
taskToAsyncTask.remove(task);
for (Listener l : listeners) l.onTaskFinished(task);
}
@Override
protected void onPreExecute()
{
for (Listener l : listeners) l.onTaskStarted(task);
activeTasks.add(this);
taskToAsyncTask.put(task, this);
task.onPreExecute();
}
@Override
protected void onProgressUpdate(Integer... values)
{
task.onProgressUpdate(values[0]);
}
}
}