2011-10-11 62 views
1

我知道SL5有一个新的属性来计算MouseClicks,但有了帮助,当SL4出来时我得到了这个工作。现在我转移到一台新机器上,下载了RX,并且我知道RX经历了一些破坏此代码的更改。我试过了,但我似乎无法从FastSubject中转换过渡。Rx突然变化

我真的很想在这里完全理解Subject的用法,以及如何更新呼叫以使用当前版本的Rx。

public static IObservable<TSource> MonitorForDoubleClicks<TSource>(this IObservable<TSource> source, TimeSpan doubleClickSpeed, IScheduler scheduler) 
{ 
    return source.Multicast<TSource, TSource, TSource>(
    () => new FastSubject<TSource>(), 
     values => 
     { 
     return values 
      .TimeInterval(scheduler) //injects a timestamp event arguments 
      .Skip(1)     // in order to determine an interval we need two of these, so this keeps the event in the collection, but does not process the first one in 
      .Where(interval => interval.Interval <= doubleClickSpeed)  //second event has arrived, so we can test the interval 
      .RemoveTimeInterval()           //take the time argument out of the event args 
      .Take(1)              //we take one of the events (the latest) and throw it 
      .Repeat();             //keep the observer alive forever 
     }); 

回答

2

FastSubject只是主题现在,所有主题都快:)但是,这是一个奇怪的方式来检查双击。

如何只(警告:通过文本区域编码):

return source.Timestamp(scheduler) 
    .Buffer(/*buffer of*/2, 1 /*advanced at a time*/) 
    .Where(x => x[1].Timestamp - x[0].Timestamp < doubleClickSpeed) 
    .Select(x => x[1]);