/// <summary>
/// Internal method called when the control is removed from a rooted logical tree.
/// </summary>
/// <param name="e">The event args.</param>
private void OnDetachedFromLogicalTreeCore(LogicalTreeAttachmentEventArgs e)
{
if (_isAttachedToLogicalTree)
{
if (Name != null)
{
_nameScope?.Unregister(Name);
}
_isAttachedToLogicalTree = false;
_styleDetach.OnNext(this);
OnDetachedFromLogicalTree(e);
foreach (var child in LogicalChildren.OfType <Control>())
{
child.OnDetachedFromLogicalTreeCore(e);
}
#if DEBUG
if (((INotifyCollectionChangedDebug)_classes).GetCollectionChangedSubscribers()?.Length > 0)
{
Logger.Warning(
LogArea.Control,
this,
"{Type} detached from logical tree but still has class listeners",
this.GetType());
}
#endif
}
}
/// <summary>
/// Called when the control is removed from a logical tree.
/// </summary>
/// <param name="e">The event args.</param>
/// <remarks>
/// It is vital that if you override this method you call the base implementation;
/// failing to do so will cause numerous features to not work as expected.
/// </remarks>
protected virtual void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
if (Name != null)
{
_nameScope?.Unregister(Name);
}
_isAttachedToLogicalTree = false;
_styleDetach.OnNext(Unit.Default);
this.TemplatedParent = null;
DetachedFromLogicalTree?.Invoke(this, e);
foreach (var child in LogicalChildren.OfType <Control>())
{
child.OnDetachedFromLogicalTree(e);
}
}