private void InitializeMouseHandler()
{
mouseButtonEvent = new FirableEvent<MouseStatus>();
mouseMoveEvent = new FirableEvent<MouseEventArgs>();
mouseButtonBehavior = mouseButtonEvent.Hold(MouseStatus.Up);
this.mouseButtonDown = new EqualityPredicate<MouseStatus>(mouseButtonBehavior, MouseStatus.Down);
mouseDragEvent = mouseMoveEvent.Gate(this.mouseButtonDown);
mouseButtonBehavior.SubscribeWithInitialFire(a =>
{
status.Text = string.Format("{0} {1}", a, DateTime.Now);
});
mouseDragEvent.Map(e => new Tuple<string, string>(e.X.ToString(), e.Y.ToString())).Subscribe(t =>
{
x.Text = t.Item1;
y.Text = t.Item2;
});
MouseMove += (s, e) => mouseMoveEvent.Fire(e);
MouseDown += (s, e) => mouseButtonEvent.Fire(MouseStatus.Down);
MouseUp += (s, e) => mouseButtonEvent.Fire(MouseStatus.Up);
}
public void TestGate()
{
var enabled = new IdentityPredicate(true);
var ec = new FirableEvent<char>();
var epred = new QueryPredicate(() => enabled.Value);
var o = new List<char>();
var l = ec.Gate(epred).Subscribe(o.Add);
ec.Fire('H');
enabled = new IdentityPredicate(false);
ec.Fire('O');
enabled = new IdentityPredicate(true);
ec.Fire('I');
l.Dispose();
AssertArraysEqual(Arrays<char>.AsList('H', 'I'), o);
}