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");
}
);
}
public void TargetControlInTemplate()
{
Control c = new VSMTest.VSMControl();
Grid g = null;
c.ApplyTemplate();
CreateAsyncTest(c,
() => g = (Grid)VisualTreeHelper.GetChild(c, 0),
() => Assert.IsTrue(VisualStateManager.GoToState(c, "A", false), "#1"),
() => Assert.AreEqual(100, g.Width, "#2"),
() => Assert.IsTrue(VisualStateManager.GoToState(c, "B", false), "#3"),
() => Assert.AreEqual(200, g.Width, "#4"),
() => Assert.IsTrue(VisualStateManager.GoToState(c, "A", true), "#5"),
() => Assert.AreEqual(100, g.Width, "#6"),
() => Assert.IsTrue(VisualStateManager.GoToState(c, "B", true), "#7"),
() => Assert.AreEqual(200, g.Width, "#8")
);
}
public void TargetControlInTemplate ()
{
Control c = new VSMTest.VSMControl ();
Grid g = null;
c.ApplyTemplate ();
CreateAsyncTest (c,
() => g = (Grid) VisualTreeHelper.GetChild (c, 0),
() => Assert.IsTrue (VisualStateManager.GoToState (c, "A", false), "#1"),
() => Assert.AreEqual (100, g.Width, "#2"),
() => Assert.IsTrue (VisualStateManager.GoToState (c, "B", false), "#3"),
() => Assert.AreEqual (200, g.Width, "#4"),
() => Assert.IsTrue (VisualStateManager.GoToState (c, "A", true), "#5"),
() => Assert.AreEqual (100, g.Width, "#6"),
() => Assert.IsTrue (VisualStateManager.GoToState (c, "B", true), "#7"),
() => Assert.AreEqual (200, g.Width, "#8")
);
}