/* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* <p/>
* This library 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
* Lesser General Public License for more details.
*/
package org.rzo.yajsw.os.ms.win.w32;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.rzo.yajsw.os.TaskList;
// TODO: Auto-generated Javadoc
/**
* The Class WindowsXPTaskList.
*/
public class WindowsXPTaskList implements TaskList
{
/** The _listners. */
List _listners = new ArrayList();
/** The _maps. */
Map[] _maps;
/** The _maps lock. */
Map _mapsLock = new HashMap();
/** The _instance. */
static WindowsXPTaskList _instance;
/** The _worker. */
Worker _worker = new Worker();
/**
* Instance.
*
* @return the windows xp task list
*/
public static WindowsXPTaskList instance()
{
if (_instance == null)
{
_instance = new WindowsXPTaskList();
}
return _instance;
}
/**
* Instantiates a new windows xp task list.
*/
private WindowsXPTaskList()
{
synchronized (_mapsLock)
{
_maps = WindowsXPProcess.getProcessMaps(0);
}
new Thread(_worker).start();
}
/*
* (non-Javadoc)
*
* @seeorg.rzo.yajsw.os.TaskList#addListner(org.rzo.yajsw.os.TaskList.
* TaskListListner)
*/
public synchronized void addListner(TaskListListner listner)
{
_listners.add(listner);
}
/*
* (non-Javadoc)
*
* @seeorg.rzo.yajsw.os.TaskList#removeListner(org.rzo.yajsw.os.TaskList.
* TaskListListner)
*/
public synchronized void removeListner(TaskListListner listner)
{
_listners.remove(listner);
}
/**
* The Class TaskListEvent.
*/
public class TaskListEvent implements org.rzo.yajsw.os.TaskList.TaskListEvent
{
/** The _new tasks. */
Collection _newTasks;
/** The _removed tasks. */
Collection _removedTasks;
/** The _current tasks. */
Collection _currentTasks;
/**
* Instantiates a new task list event.
*
* @param newTasks
* the new tasks
* @param removedTasks
* the removed tasks
* @param currentTasks
* the current tasks
*/
TaskListEvent(Collection newTasks, Collection removedTasks, Collection currentTasks)
{
_newTasks = newTasks;
_removedTasks = removedTasks;
_currentTasks = currentTasks;
}
/*
* (non-Javadoc)
*
* @see org.rzo.yajsw.os.TaskList.TaskListEvent#getNewTasks()
*/
public Collection getNewTasks()
{
return _newTasks;
}
/*
* (non-Javadoc)
*
* @see org.rzo.yajsw.os.TaskList.TaskListEvent#getRemovedTasks()
*/
public Collection getRemovedTasks()
{
return _removedTasks;
}
/*
* (non-Javadoc)
*
* @see org.rzo.yajsw.os.TaskList.TaskListEvent#getCurrentTasks()
*/
public Collection getCurrentTasks()
{
return _currentTasks;
}
}
/*
* (non-Javadoc)
*
* @see org.rzo.yajsw.os.TaskList#taskList()
*/
public Map taskList()
{
synchronized (_mapsLock)
{
if (_maps == null)
return null;
else
return new HashMap(_maps[0]);
}
}
/**
* The Class Worker.
*/
class Worker implements Runnable
{
/*
* (non-Javadoc)
*
* @see java.lang.Runnable#run()
*/
public void run()
{
while (true)
{
try
{
Thread.sleep(250);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
synchronized (_mapsLock)
{
synchronized (_listners)
{
Map[] maps2 = WindowsXPProcess.getProcessMaps(0);
Set newSet = new HashSet(maps2[0].keySet());
newSet.removeAll(_maps[0].keySet());
Set deleteSet = new HashSet(_maps[0].keySet());
deleteSet.removeAll(maps2[0].keySet());
_maps = maps2;
if ((newSet.size() > 0 || deleteSet.size() > 0) && _listners.size() > 0)
{
TaskListEvent event = new TaskListEvent(newSet, deleteSet, _maps[0].keySet());
for (Iterator it = _listners.iterator(); it.hasNext();)
try
{
((TaskListListner) it.next()).changed(event);
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
}
}
}
}
}
}