private void Evaluate()
{
Action action = null;
foreach (KeyValuePair <IComplexVisibilityObject, bool> keyValuePair in this.listeners)
{
bool flag = this.Evaluate(keyValuePair.Key.ShowConditions);
bool flag2 = this.Evaluate(keyValuePair.Key.HideConditions);
bool flag3 = flag && !flag2;
if (keyValuePair.Value != flag3)
{
IComplexVisibilityObject target = keyValuePair.Key;
bool newState = flag3;
action = (Action)Delegate.Combine(action, new Action(delegate()
{
this.listeners[target] = newState;
target.OnStateChanged(newState);
}));
}
}
if (action != null)
{
action();
}
}
public void Unsubscribe(IComplexVisibilityObject listener)
{
if (this.listeners.ContainsKey(listener))
{
this.listeners.Remove(listener);
}
}
public void StateChanged(IComplexVisibilityObject listener, bool newState)
{
if (this.listeners.ContainsKey(listener))
{
this.listeners[listener] = newState;
}
}
public void Subscribe(IComplexVisibilityObject listener, bool currentState)
{
if (!this.listeners.ContainsKey(listener))
{
this.listeners.Add(listener, currentState);
}
this.Evaluate();
}
