1using System;
 2using System.Collections.Generic;
 3
 4namespace jive
 5{
 6  public class IntervalTimer : Timer
 7  {
 8    readonly ITimerFactory factory;
 9    readonly IDictionary<TimerClient, System.Timers.Timer> timers;
10
11    public IntervalTimer() : this(new TimerFactory())
12    {
13    }
14
15    public IntervalTimer(ITimerFactory factory)
16    {
17      this.factory = factory;
18      timers = new Dictionary<TimerClient, System.Timers.Timer>();
19    }
20
21    public void start_notifying(TimerClient client_to_be_notified, TimeSpan span)
22    {
23      stop_notifying(client_to_be_notified);
24
25      var timer = factory.create_for(span);
26      timer.Elapsed += (o, e) =>
27      {
28        client_to_be_notified.notify();
29      };
30      timer.Start();
31      timers[client_to_be_notified] = timer;
32    }
33
34    public void stop_notifying(TimerClient client_to_stop_notifying)
35    {
36      if (!timers.ContainsKey(client_to_stop_notifying)) return;
37      timers[client_to_stop_notifying].Stop();
38      timers[client_to_stop_notifying].Dispose();
39    }
40
41    public void Dispose()
42    {
43      timers.each(x => x.Value.Dispose());
44      timers.Clear();
45    }
46  }
47}