private void Show()
{
// Check whether the window is still active
// (it prevent keytips showing during Alt-Tab'ing)
if (!this.window.IsActive)
{
this.RestoreFocuses();
return;
}
this.currentUserInput = string.Empty;
this.activeAdornerChain = new KeyTipAdorner(this.ribbon, this.ribbon, null);
this.activeAdornerChain.Terminated += this.OnAdornerChainTerminated;
// Special behavior for backstage
var backstage = this.ribbon.Menu as Backstage;
if (backstage != null && backstage.IsOpen)
{
var keys = KeyTip.GetKeys(backstage);
if (!String.IsNullOrEmpty(keys))
{
this.activeAdornerChain.Forward(KeyTip.GetKeys(backstage), false);
}
else
{
this.activeAdornerChain.Attach();
}
}
else
{
this.activeAdornerChain.Attach();
}
}
// Window's messages hook up
private IntPtr WindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
// We must terminate the keytip's adorner chain if:
// - mouse clicks in non client area
// - the window is deactivated
if (((msg >= 161) && (msg <= 173)) || msg == NativeMethods.WM_NCACTIVATE)
{
if ((activeAdornerChain != null) && (activeAdornerChain.IsAdornerChainAlive))
{
activeAdornerChain.Terminate();
activeAdornerChain = null;
}
}
return(IntPtr.Zero);
}
/// <summary>
/// Construcotor
/// </summary>
/// <param name="adornedElement"></param>
/// <param name="parentAdorner">Parent adorner or null</param>
/// <param name="keyTipElementContainer">The element which is container for elements</param>
public KeyTipAdorner(UIElement adornedElement, UIElement keyTipElementContainer, KeyTipAdorner parentAdorner)
: base(adornedElement)
{
this.parentAdorner = parentAdorner;
this.keyTipElementContainer = keyTipElementContainer;
// Try to find supported elements
FindKeyTips(this.keyTipElementContainer, false);
oneOfAssociatedElements = (FrameworkElement)(associatedElements.Count != 0 ?
associatedElements[0] :
adornedElement // Maybe here is bug, coz we need keytipped item here...
);
keyTipPositions = new Point[keyTips.Count];
}
private void OnWindowKeyUp(object sender, KeyEventArgs e)
{
if (this.ribbon.IsCollapsed)
{
return;
}
if ((e.Key == Key.System) &&
((e.SystemKey == Key.LeftAlt) ||
(e.SystemKey == Key.RightAlt) ||
(e.SystemKey == Key.F10) ||
(e.SystemKey == Key.Space)))
{
this.currentUserInput = string.Empty;
e.Handled = true;
if (this.timer.IsEnabled)
{
this.timer.Stop();
this.backUpFocusedElement = Keyboard.FocusedElement;
// Focus ribbon
this.ribbon.Focusable = true;
//this.ribbon.Focus();
this.Show();
}
else if (this.activeAdornerChain != null && this.activeAdornerChain.IsAdornerChainAlive)
{
// Focus ribbon
this.backUpFocusedElement = Keyboard.FocusedElement;
this.ribbon.Focusable = true;
//this.ribbon.Focus();
this.activeAdornerChain.Terminate();
this.activeAdornerChain = null;
}
}
else
{
this.timer.Stop();
}
}
// Forward to the next element
private void Forward(UIElement element, bool click)
{
this.Detach();
if (click)
{
//element.RaiseEvent(new RoutedEventArgs(Button.ClickEvent, null));
var control = element as IKeyTipedControl;
if (control != null)
{
control.OnKeyTipPressed();
}
}
var children = LogicalTreeHelper.GetChildren(element)
.OfType <UIElement>()
.ToArray();
if (children.Length == 0)
{
this.Terminate();
return;
}
this.childAdorner = ReferenceEquals(GetTopLevelElement(children[0]), GetTopLevelElement(element)) == false
? new KeyTipAdorner(children[0], element, this)
: new KeyTipAdorner(element, element, this);
// Stop if no further KeyTips can be displayed.
if (!this.childAdorner.keyTips.Any())
{
this.Terminate();
return;
}
this.Detach();
this.childAdorner.Attach();
}
private void OnWindowKeyDown(object sender, KeyEventArgs e)
{
if (e.IsRepeat)
{
return;
}
if (this.ribbon.IsCollapsed)
{
return;
}
if ((e.Key == Key.System) &&
((e.SystemKey == Key.LeftAlt) ||
(e.SystemKey == Key.RightAlt) ||
(e.SystemKey == Key.F10) ||
(e.SystemKey == Key.Space)))
{
if (this.activeAdornerChain == null || (!this.activeAdornerChain.IsAdornerChainAlive || !this.activeAdornerChain.AreAnyKeyTipsVisible))
{
if (this.activeAdornerChain != null)
{
this.activeAdornerChain.Terminate();
}
this.activeAdornerChain = null;
this.timer.Start();
}
else
{
this.currentUserInput = string.Empty;
}
}
else if (e.Key == Key.Escape)
{
if (this.activeAdornerChain != null)
{
this.activeAdornerChain.ActiveKeyTipAdorner.Back();
}
}
else
{
if (e.Key == Key.System &&
e.SystemKey != Key.Escape &&
e.KeyboardDevice.Modifiers == ModifierKeys.Alt)
{
if (this.activeAdornerChain == null || (!this.activeAdornerChain.IsAdornerChainAlive || !this.activeAdornerChain.AreAnyKeyTipsVisible))
{
this.timer.Stop();
this.backUpFocusedElement = Keyboard.FocusedElement;
// Focus ribbon
this.ribbon.Focusable = true;
//this.ribbon.Focus();
this.Show();
}
if (this.activeAdornerChain != null)
{
this.currentUserInput += this.keyConverter.ConvertToString(e.SystemKey);
if (this.activeAdornerChain.ActiveKeyTipAdorner.Forward(this.currentUserInput, true))
{
this.currentUserInput = string.Empty;
e.Handled = true;
}
}
}
}
}
