public static Selector Descendent(this Selector previous)
{
return(new Selector(previous, stopTraversal: true)
{
SelectorString = " ",
GetObservable = control =>
{
// TODO: This needs to traverse the logical tree, not the visual.
IVisual c = (IVisual)control;
List <IObservable <bool> > descendentMatches = new List <IObservable <bool> >();
while (c != null)
{
c = c.VisualParent;
if (c is IStyleable)
{
descendentMatches.Add(previous.GetActivator((IStyleable)c));
}
}
return new StyleActivator(
descendentMatches,
ActivatorMode.Or);
},
});
}
public static Selector Template(this Selector previous)
{
Contract.Requires <ArgumentNullException>(previous != null);
return(new Selector(previous, stopTraversal: true)
{
GetObservable = control =>
{
IStyleable templatedParent = control.TemplatedParent as IStyleable;
return templatedParent != null?
previous.GetActivator(templatedParent) :
Observable.Return(true);
},
InTemplate = true,
SelectorString = " $ ",
});
}