public void AddStateAtRuntime ()
{
Rectangle rect = new Rectangle { Name = RootName };
VSMControl c = new VSMControl ();
c.ApplyTemplate ();
// Create a visual state in code which we will try to use to animate the template element called 'Grid'
foreach (VisualStateGroup g in VisualStateManager.GetVisualStateGroups (c.TemplateGrid)) {
VisualState s = new VisualState ();
s.SetValue (FrameworkElement.NameProperty, "C");
s.Storyboard = CreateWidthStoryboard (RootName, 600, 700);
g.States.Add (s);
}
// The template element "Grid" can't be found by the new storyboard
CreateAsyncTest (c,
() => {
Assert.IsTrue (VisualStateManager.GoToState (c, "A", false), "#1");
Assert.Throws<InvalidOperationException> (() => VisualStateManager.GoToState (c, "C", false), "#2");
// Adding a new element called 'Grid' to the TestPanel does not work
TestPanel.Children.Add (rect);
Assert.Throws<InvalidOperationException> (() => VisualStateManager.GoToState (c, "C", false), "#3");
// The new element is not findable from the control
Assert.IsNull (c.FindName (RootName), "#4");
Assert.AreSame (rect, TestPanel.FindName (RootName), "#5");
// Adding it to the template grid instead
TestPanel.Children.Remove (rect);
c.TemplateGrid.Children.Add (rect);
// It's not findable from the panel, but it is from the Control
Assert.AreSame (rect, c.FindName (RootName), "#6");
Assert.IsNull (TestPanel.FindName (RootName), "#7");
// Once it's findable from the control, the storyboard will resolve to the new element and succeed
Assert.IsTrue (VisualStateManager.GoToState (c, "C", false), "#8");
},
() => {
Assert.AreEqual (700, rect.Width, "#9");
// The template element 'Grid' is not changed
Assert.IsTrue (Double.IsNaN (c.TemplateGrid.Width), "#10");
}
);
}
