/// <summary>
/// Attaches this adorner to the adorned element
/// </summary>
public void Attach()
{
if (attached)
{
return;
}
Log("Attach begin");
if (!oneOfAssociatedElements.IsLoaded)
{
// Delay attaching
oneOfAssociatedElements.Loaded += OnDelayAttach;
return;
}
// Focus current adorned element
// Keyboard.Focus(adornedElement);
focusedElement = Keyboard.FocusedElement;
if (focusedElement != null)
{
Log("Focus Attached to " + focusedElement.ToString());
focusedElement.LostKeyboardFocus += OnFocusLost;
focusedElement.PreviewKeyDown += OnPreviewKeyDown;
focusedElement.PreviewKeyUp += OnPreviewKeyUp;
}
else
{
Log("[!] Focus Setup Failed");
}
GetTopLevelElement(oneOfAssociatedElements).PreviewMouseDown += OnInputActionOccured;
// Show this adorner
adornerLayer = GetAdornerLayer(oneOfAssociatedElements);
adornerLayer.Add(this);
// Clears previous user input
enteredKeys = "";
FilterKeyTips();
// Hookup window activation
attachedHwndSource = ((HwndSource)PresentationSource.FromVisual(oneOfAssociatedElements));
if (attachedHwndSource != null)
{
attachedHwndSource.AddHook(WindowProc);
}
// Start timer to track focus changing
if (timerFocusTracking == null)
{
timerFocusTracking = new DispatcherTimer(DispatcherPriority.ApplicationIdle, Dispatcher.CurrentDispatcher);
timerFocusTracking.Interval = TimeSpan.FromMilliseconds(50);
timerFocusTracking.Tick += OnTimerFocusTrackingTick;
}
timerFocusTracking.Start();
attached = true;
Log("Attach end");
}
private void MyMouseDown(object sender, MouseEventArgs e)
{
IInputElement sourceElement = e.MouseDevice.Captured;
if (sourceElement != null)
{
captureButton.Content = sourceElement.ToString();
}
else
{
captureButton.Content = "NULL";
}
}
public void GetFocusedElement()
{
//<SnippetFocusGetSetFocusedElement>
// Sets the focused element in focusScope1
// focusScope1 is a StackPanel.
FocusManager.SetFocusedElement(focusScope1, button2);
// Gets the focused element for focusScope 1
IInputElement focusedElement = FocusManager.GetFocusedElement(focusScope1);
//</SnippetFocusGetSetFocusedElement>
MessageBox.Show(focusedElement.ToString());
}
private void MouseMoveHighlightCapture(object sender, MouseEventArgs e)
{
IInputElement sourceElement = e.MouseDevice.Captured;
if (sourceElement != null)
{
captureTarget.Content = sourceElement.ToString();
}
else
{
captureTarget.Content = "NULL";
}
Control sourceControl = sourceElement as Control;
if (sourceControl != null)
{
sourceControl.Background = Brushes.Blue;
}
// captureTarget.Content = "BLAH";
}
public static bool DataGridHasFocus(DependencyObject instance)
{
//how to fibnd out whether a datagrid has focus or not to handle key previewers
IInputElement focusedControl = FocusManager.GetFocusedElement(instance);
if (focusedControl == null)
{
return(true);
}
string compare = focusedControl.ToString();
if (compare.ToUpper( ).Contains("DATAGRID"))
{
return(true);
}
else
{
return(false);
}
}
void OnFocusLost(object sender, RoutedEventArgs e)
{
if (attached)
{
Log("Focus Lost");
IInputElement previousFocusedElementElement = focusedElement;
focusedElement.LostKeyboardFocus -= OnFocusLost;
focusedElement.PreviewKeyDown -= OnPreviewKeyDown;
focusedElement.PreviewKeyUp -= OnPreviewKeyUp;
focusedElement = Keyboard.FocusedElement;
if (focusedElement != null)
{
Log("Focus Changed from " + previousFocusedElementElement.ToString() + " to " + focusedElement.ToString());
focusedElement.LostKeyboardFocus += OnFocusLost;
focusedElement.PreviewKeyDown += OnPreviewKeyDown;
focusedElement.PreviewKeyUp += OnPreviewKeyUp;
}
else
{
Log("Focus Not Restored");
}
}
}
private void OnFocusLost(object sender, RoutedEventArgs e)
{
if (attached)
{
Log("Focus Lost");
var previousFocusedElementElement = focusedElement;
focusedElement.LostKeyboardFocus -= OnFocusLost;
focusedElement.PreviewKeyDown -= OnPreviewKeyDown;
focusedElement.PreviewTextInput -= this.OnFocusedElementPreviewTextInput;
focusedElement = Keyboard.FocusedElement;
if (focusedElement != null)
{
Log("Focus Changed from " + previousFocusedElementElement.ToString() + " to " + focusedElement.ToString());
focusedElement.LostKeyboardFocus += OnFocusLost;
focusedElement.PreviewKeyDown += OnPreviewKeyDown;
focusedElement.PreviewTextInput += this.OnFocusedElementPreviewTextInput;
}
else
{
Log("Focus Not Restored");
}
}
}
/// <summary>
/// Attaches this adorner to the adorned element
/// </summary>
public void Attach()
{
if (attached) return;
Log("Attach begin");
if (!oneOfAssociatedElements.IsLoaded)
{
// Delay attaching
oneOfAssociatedElements.Loaded += OnDelayAttach;
return;
}
adornerLayer = GetAdornerLayer(oneOfAssociatedElements);
if (adornerLayer == null) return;
// Focus current adorned element
// Keyboard.Focus(adornedElement);
focusedElement = Keyboard.FocusedElement;
if (focusedElement != null)
{
Log("Focus Attached to " + focusedElement.ToString());
focusedElement.LostKeyboardFocus += OnFocusLost;
focusedElement.PreviewKeyDown += OnPreviewKeyDown;
focusedElement.PreviewTextInput += this.OnFocusedElementPreviewTextInput;
}
else Log("[!] Focus Setup Failed");
GetTopLevelElement(oneOfAssociatedElements).PreviewMouseDown += OnInputActionOccured;
// Show this adorner
adornerLayer.Add(this);
// Clears previous user input
enteredKeys = "";
FilterKeyTips();
// Hookup window activation
attachedHwndSource = ((HwndSource)PresentationSource.FromVisual(oneOfAssociatedElements));
if (attachedHwndSource != null) attachedHwndSource.AddHook(WindowProc);
// Start timer to track focus changing
if (timerFocusTracking == null)
{
timerFocusTracking = new DispatcherTimer(DispatcherPriority.ApplicationIdle, Dispatcher.CurrentDispatcher);
timerFocusTracking.Interval = TimeSpan.FromMilliseconds(50);
timerFocusTracking.Tick += OnTimerFocusTrackingTick;
}
timerFocusTracking.Start();
attached = true;
Log("Attach end");
}
internal static void SetFocus(ManagedContent m, Func <IInputElement> activeChildFunc, bool forceSetFocus = false)
{
m.Dispatcher.BeginInvoke(
DispatcherPriority.Background,
new Action(
delegate {
// ensure that condition for FocusContent() is still fulfilled
// (necessary to avoid focus switching loops when changing layouts)
if (!forceSetFocus && !(m.IsActiveContent && !m.IsKeyboardFocusWithin))
{
WpfWorkbench.FocusDebug("{0} - not moving focus (IsActiveContent={1}, IsKeyboardFocusWithin={2})",
m.Title, m.IsActiveContent, m.IsKeyboardFocusWithin);
return;
}
IInputElement activeChild = activeChildFunc();
WpfWorkbench.FocusDebug("{0} - moving focus to: {1}", m.Title, activeChild != null ? activeChild.ToString() : "<null>");
if (activeChild != null)
{
Keyboard.Focus(activeChild);
}
}));
}
void OnFocusLost(object sender, RoutedEventArgs e)
{
if (attached)
{
Log("Focus Lost");
IInputElement previousFocusedElementElement = focusedElement;
focusedElement.LostKeyboardFocus -= OnFocusLost;
focusedElement.PreviewKeyDown -= OnPreviewKeyDown;
focusedElement.PreviewKeyUp -= OnPreviewKeyUp;
focusedElement = Keyboard.FocusedElement;
if (focusedElement != null)
{
Log("Focus Changed from " + previousFocusedElementElement.ToString() + " to " + focusedElement.ToString());
focusedElement.LostKeyboardFocus += OnFocusLost;
focusedElement.PreviewKeyDown += OnPreviewKeyDown;
focusedElement.PreviewKeyUp += OnPreviewKeyUp;
}
else Log("Focus Not Restored");
}
}