private static SelectorMatch MatchDescendent(IStyleable control, Selector previous)
{
ILogical c = (ILogical)control;
List <IObservable <bool> > descendentMatches = new List <IObservable <bool> >();
while (c != null)
{
c = c.LogicalParent;
if (c is IStyleable)
{
var match = previous.Match((IStyleable)c);
if (match.ImmediateResult != null)
{
if (match.ImmediateResult == true)
{
return(SelectorMatch.True);
}
}
else
{
descendentMatches.Add(match.ObservableResult);
}
}
}
return(new SelectorMatch(StyleActivator.Or(descendentMatches)));
}
protected override SelectorMatch Evaluate(IStyleable control, bool subscribe)
{
ILogical c = (ILogical)control;
List <IObservable <bool> > descendentMatches = new List <IObservable <bool> >();
while (c != null)
{
c = c.LogicalParent;
if (c is IStyleable)
{
var match = _parent.Match((IStyleable)c, subscribe);
if (match.ImmediateResult != null)
{
if (match.ImmediateResult == true)
{
return(SelectorMatch.True);
}
}
else
{
descendentMatches.Add(match.ObservableResult);
}
}
}
if (descendentMatches.Count > 0)
{
return(new SelectorMatch(StyleActivator.Or(descendentMatches)));
}
else
{
return(SelectorMatch.False);
}
}
