public void Detach_NotAttached_DetachNotCalledOnItems()
{
BehaviorCollection behaviorCollection = new BehaviorCollection()
{
new StubBehavior()
};
behaviorCollection.Detach();
TestUtilities.AssertNotDetached((StubBehavior)behaviorCollection[0]);
}
public void AttachDetachTest()
{
StubBehavior stubBehavior = new StubBehavior();
BehaviorTestUtilities.TestIAttachedObject <Button>((IAttachedObject)stubBehavior);
Rectangle rectangle = new Rectangle();
StubBehavior behavior = new StubBehavior();
BehaviorCollection behaviorCollection = Interaction.GetBehaviors(rectangle);
behaviorCollection.Add(behavior);
behaviorCollection.Detach();
BehaviorTestUtilities.TestIAttachedObject <Button>((IAttachedObject)behaviorCollection);
}
public void Detach_Attached_AllItemsDetached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Attach(new Button());
behaviorCollection.Detach();
Assert.IsNull(behaviorCollection.AssociatedObject, "The AssociatedObject should be null after Detach.");
foreach (StubBehavior behavior in behaviorCollection)
{
TestUtilities.AssertDetached(behavior);
}
}
private static void OnBehaviorsChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
BehaviorCollection behaviorCollection = (BehaviorCollection)args.OldValue;
BehaviorCollection behaviorCollection2 = (BehaviorCollection)args.NewValue;
if (behaviorCollection != behaviorCollection2)
{
if (behaviorCollection != null && ((IAttachedObject)behaviorCollection).AssociatedObject != null)
{
behaviorCollection.Detach();
}
if (behaviorCollection2 != null && obj != null)
{
if (((IAttachedObject)behaviorCollection2).AssociatedObject != null)
{
throw new InvalidOperationException("CannotHostBehaviorCollectionMultipleTimesExceptionMessage");
}
behaviorCollection2.Attach(obj);
}
}
}
