/// <summary>
/// called only when oldValue or newVlaue is me
/// </summary>
/// <param name="oldValue"></param>
/// <param name="newValue"></param>
internal protected virtual void OnActiveDocumentChanged(IDocumentViewModel oldValue, IDocumentViewModel newValue)
{
//using Object.ReferenceEquals to compare
if (object.ReferenceEquals(newValue, this))
{
ContextualUI.Show(this);
}
else if (object.ReferenceEquals(oldValue, this))
{
ContextualUI.Hide(this);
}
}
internal protected virtual void OnBeforeOpen()
{
ContextualUI.Clear();
}
