public void Thumb_DragComplete_Event_Should_Raise_Scroll_Event()
{
var target = new ScrollBar
{
Template = new FuncControlTemplate <ScrollBar>(Template),
};
target.ApplyTemplate();
var track = (Track)target.GetTemplateChildren().First(x => x.Name == "track");
var raisedEvent = Assert.Raises <ScrollEventArgs>(
handler => target.Scroll += handler,
handler => target.Scroll -= handler,
() =>
{
var ev = new VectorEventArgs
{
RoutedEvent = Thumb.DragCompletedEvent,
Vector = new Vector(0, 0)
};
track.Thumb.RaiseEvent(ev);
});
Assert.Equal(ScrollEventType.EndScroll, raisedEvent.Arguments.ScrollEventType);
}
public void Setting_Track_Value_Should_Update_Value()
{
var target = new ScrollBar
{
Template = new FuncControlTemplate <ScrollBar>(Template),
};
target.ApplyTemplate();
var track = (Track)target.GetTemplateChildren().First(x => x.Name == "track");
track.Value = 50;
Assert.Equal(target.Value, 50);
}
public void Setting_Value_Should_Update_Track_Value()
{
var target = new ScrollBar
{
Template = new FuncControlTemplate <ScrollBar>(Template),
};
target.ApplyTemplate();
var track = target.GetTemplateChild <Track>("track");
target.Value = 50;
Assert.Equal(track.Value, 50);
}
private static void Optimize(ScrollBar bar)
{
// Some ScrollBars still don't have Buttons when the Loaded-Event is raised. We have to
// apply the Template manually so we can replace the Commands.
// That call isn't that bad because ApplyTemplate only does something if the Template
// wasn't already applied.
bar.ApplyTemplate();
foreach (ButtonBase button in GetVisualDescendants(bar).OfType <ButtonBase>())
{
// The Buttons in a ScrollBar can always stay enabled, in cases when there is nothing
// to scroll the whole ScrollBar disables itself anyway. Therefor we can use a
// AlwaysExecutableRoutedCommand here.
if (button.Command is RoutedCommand)
{
button.Command = new AlwaysExecutableRoutedCommand((RoutedCommand)button.Command, button);
}
}
}