public void When_ElementNameSubject_Lazy()
{
var ens = new ElementNameSubject(true, "test");
var g = new Grid();
Border b1 = null;
var stub = new ElementStub {
Name = "test",
ContentBuilder = () => {
b1 = new Border()
{
Name = "test"
};
ens.ElementInstance = b1;
return(b1);
}
};
ens.ElementInstance = stub;
g.Children.Add(stub);
Assert.IsNull(ens.ElementInstance);
var b2 = g.FindName("test");
Assert.IsNotNull(b2);
Assert.AreEqual(b1, b2);
Assert.AreEqual(b1, g.Children.First());
}
public void When_Source_Complex()
{
var SUT = new Windows.UI.Xaml.Controls.Grid();
var subject = new ElementNameSubject();
SUT.SetBinding(
Windows.UI.Xaml.Controls.Grid.TagProperty,
new Binding()
{
Path = "MyProperty",
Source = new { MyProperty = 42 }
}
);
Assert.AreEqual(42, SUT.Tag);
}
public void When_ElementNameSetter()
{
var g = new Grid();
Grid innerGrid = null;
var subject = new ElementNameSubject(false, "test");
var stub = new ElementStub
{
ContentBuilder = () => {
innerGrid = new Grid()
{
Name = "test"
};
subject.ElementInstance = innerGrid;
return(innerGrid);
}
};
subject.ElementInstance = stub;
g.Children.Add(stub);
var SUT = new Setter(new TargetPropertyPath(subject, "Tag"), 42);
var trigger = new StateTrigger()
{
IsActive = false
};
var vs = new VisualState {
Setters = { SUT }, StateTriggers = { trigger }
};
var group = new VisualStateGroup();
group.States.Add(vs);
VisualStateManager.SetVisualStateGroups(g, new List <VisualStateGroup>()
{
group
});
Assert.IsNull(innerGrid);
trigger.IsActive = true;
Assert.IsNotNull(innerGrid);
Assert.AreEqual(42, innerGrid.Tag);
}
public void When_Subject_Source()
{
var SUT = new Windows.UI.Xaml.Controls.Grid();
var subject = new ElementNameSubject();
SUT.SetBinding(
Windows.UI.Xaml.Controls.Grid.TagProperty,
new Binding()
{
Source = subject
}
);
Assert.IsNull(SUT.Tag);
subject.ElementInstance = 42;
Assert.AreEqual(42, SUT.Tag);
}
/// <summary> /// Explicitly sets the target using an ElementNameSubject, in case of lazy /// evaluation of the target element. /// </summary> public static void SetTarget(Timeline timeline, ElementNameSubject target) => timeline.SetElementNameTarget(target);
