private void OnAdornerChainTerminated(object sender, KeyTipPressedResult e)
{
this.activeAdornerChain.Terminated -= this.OnAdornerChainTerminated;
this.activeAdornerChain = null;
this.ClearUserInput();
if (e.PressedElementOpenedPopup == false)
{
this.ClosePopups();
}
if (e.PressedElementAquiredFocus == false)
{
this.RestoreFocus();
}
}
/// <summary>
/// Terminate whole key tip's adorner chain
/// </summary>
public void Terminate(KeyTipPressedResult keyTipPressedResult)
{
if (this.terminated)
{
return;
}
this.terminated = true;
this.Detach();
this.parentAdorner?.Terminate(keyTipPressedResult);
this.childAdorner?.Terminate(keyTipPressedResult);
this.Terminated?.Invoke(this, keyTipPressedResult);
this.LogDebug("Termination");
}
// Forward to the next element
private void Forward(string keys, FrameworkElement element, bool click)
{
this.LogTrace("Forwarding keys \"{0}\" to element \"{1}\".", keys, GetControlLogText(element));
this.Detach();
KeyTipPressedResult keyTipPressedResult = KeyTipPressedResult.Empty;
if (click)
{
this.LogTrace("Invoking click.");
var control = element as IKeyTipedControl;
keyTipPressedResult = control?.OnKeyTipPressed() ?? KeyTipPressedResult.Empty;
}
var children = GetVisibleChildren(element);
if (children.Count == 0)
{
this.Terminate(keyTipPressedResult);
return;
}
// Panels aren't good elements to adorn. For example, trying to display KeyTips on MenuItems in SplitButton fails if using a panel.
var validChild = children.FirstOrDefault(x => x is Panel == false) ?? children[0];
this.childAdorner = ReferenceEquals(GetTopLevelElement(validChild), GetTopLevelElement(element)) == false
? new KeyTipAdorner(validChild, element, this)
: new KeyTipAdorner(element, element, this);
// Stop if no further KeyTips can be displayed.
if (this.childAdorner.keyTipInformations.Any() == false)
{
this.Terminate(keyTipPressedResult);
return;
}
this.childAdorner.Attach();
}
