private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Effect effect = Effect;
if (effect != null)
{
if (effect.IsActive)
{
return;
}
IAttachedObject attachedObject = (IAttachedObject)effect;
if (attachedObject.AssociatedObject != this)
{
attachedObject.Detach();
attachedObject.Attach(this);
effect.Target = (Image)GetTemplateChild("ImagePresenter");
}
EffectDirection direction = _direction;
_direction = _direction == EffectDirection.Forward ? EffectDirection.Reverse : EffectDirection.Forward;
effect.PlayEffect(direction);
}
}
public static void TestIAttachedObject <T>(IAttachedObject attachedObject) where T : SysWindows.DependencyObject, new()
{
T generic = new T();
Rectangle rectangle = new Rectangle();
Assert.IsNull(attachedObject.AssociatedObject, "iAttachedObject.AssociatedObject == null");
attachedObject.Attach(generic);
Assert.AreEqual(attachedObject.AssociatedObject, generic, "After attaching generic iAttachedObject.AssociatedObject should be generic");
try
{
attachedObject.Attach(generic);
}
catch
{
Assert.Fail("Unexpected exception thrown.");
}
Assert.AreEqual(attachedObject.AssociatedObject, generic, "iAttachedObject.AssociatedObject == generic");
try
{
attachedObject.Attach(rectangle);
Assert.Fail("InvalidOperationException should be thrown when attempting to attach a new object.");
}
catch (InvalidOperationException)
{
}
Assert.AreEqual(attachedObject.AssociatedObject, generic, "iAttachedObject.AssociatedObject == generic");
attachedObject.Detach();
Assert.IsNull(attachedObject.AssociatedObject, "iAttachedObject.AssociatedObject == null");
try
{
attachedObject.Detach();
}
catch
{
Assert.Fail("Unexpected exception thrown.");
}
Assert.IsNull(attachedObject.AssociatedObject, "iAttachedObject.AssociatedObject == null");
attachedObject.Attach(rectangle);
Assert.AreEqual(attachedObject.AssociatedObject, rectangle, "After attaching rectangle, AttachedObject.AssociatedObject should be rectangle");
attachedObject.Detach();
}
public static void TestConstraintOnAssociatedObject <T>(IAttachedObject attachedObject) where T : SysWindows.DependencyObject, new()
{
UniqueClass nonConstraintObject = new UniqueClass();
T constraintObject = new T();
Assert.IsNull(attachedObject.AssociatedObject, "attachedObject.AssociatedObject == null");
attachedObject.Attach(constraintObject);
Assert.AreEqual(attachedObject.AssociatedObject, constraintObject,
"After attaching satisfying constraint to attachedObject, attachedObject.AssociatedObject should be that constraint");
attachedObject.Detach();
Assert.IsNull(attachedObject.AssociatedObject, "After detaching, attachedObject.AssociatedObject should be null");
try
{
attachedObject.Attach(nonConstraintObject);
Assert.Fail("Attaching an object that does not satisfy the constraint should have thrown an InvalidOperationException.");
}
catch (InvalidOperationException)
{
}
}
public static void Attach (this NSObject target, IAttachedObject attachedObject)
{
attachedObject.Attach (target);
}
public static void Attach(this NSObject target, IAttachedObject attachedObject)
{
attachedObject.Attach(target);
}