using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using TUIO;

namespace TuioProcessing
{
    class MultiGestureManager : GestureListener
    {
        private Dictionary<long, AutoResetEvent> events;
        private MultiGesture mg = null;

        public MultiGestureManager()
        {
            events = new Dictionary<long, AutoResetEvent>();
        }

        public AutoResetEvent getResetEvent(long id)
        {
            return events[id];
        }

        #region GestureListener Member

        public void gestureChainCode(Gesture g)
        {

            if(g.getCursorID() > 0)
            {
                mg.addGesture(g);
                foreach (AutoResetEvent are in events.Values)
                {
                    are.Set();
                }
            } else
            {
                if (mg != null)
                {

                    if (events.ContainsKey(mg.getID()))
                    {
                        events.Remove(mg.getID());
                    }
                    Console.WriteLine("MultiGesture: " + mg.getID() + " #Fingers: " + mg.getFingers());
                }

                mg = new MultiGesture();
                mg.addGesture(g);
                events.Add(mg.getID(), new AutoResetEvent(false));
                ThreadPool.QueueUserWorkItem(mg.threadStart, this);
            }
        }

        #endregion

        class MultiGesture
        {
            private List<Gesture> gestures;
            private MultiGestureManager mgm;
            private bool wait;
            private static long id = 0;

            public MultiGesture()
            {
                gestures = new List<Gesture>();
                wait = true;
                id++;
            }

            public long getID()
            {
                return id;
            }

            public int getFingers()
            {
                return gestures.Count;
            }

            public void addGesture(Gesture g)
            {
                gestures.Add(g);
            }

            public void threadStart(Object threadContext)
            {
                mgm = (MultiGestureManager)threadContext;
                mgm.getResetEvent(id).WaitOne(100, false);

            }

        }
    }
}