/// <summary>
/// Called after the behavior is attached to an AssociatedObject.
/// </summary>
protected override void OnAttached()
{
base.OnAttached();
_popupHeader = new PopupHeader();
_popupHeader.PlacementTarget = AssociatedObject;
var content = new ContentPresenter {
ContentTemplate = HeaderTemplate, HorizontalAlignment = HorizontalAlignment.Stretch
};
_popupHeader.Content = content;
if (AssociatedObject is Panel)
{
SetPanelRoot(AssociatedObject, AssociatedObject as Panel);
}
else
{
var binding = new Binding();
binding.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor)
{
AncestorType = typeof(Panel)
};
BindingOperations.SetBinding(AssociatedObject, PanelRootProperty, binding);
}
var panel = GetPanelRoot(AssociatedObject);
panel.Children.Add(_popupHeader);
}
/// <summary>
/// Called when the behavior is being detached from its AssociatedObject, but before it has actually occurred.
/// </summary>
protected override void OnDetaching()
{
base.OnDetaching();
var panel = GetPanelRoot(AssociatedObject);
panel.Children.Remove(_popupHeader);
_popupHeader.PlacementTarget = null;
_popupHeader = null;
}
