internal void CoreSetResults(FocusMovementResult coreFocusMovementResult)
{
if (_focusMovementResult == null)
{
_focusMovementResult = new FocusMovementResult();
}
bool wasMoved = coreFocusMovementResult.WasMoved && !coreFocusMovementResult.WasCanceled;
_focusMovementResult.Succeeded = wasMoved;
}
internal bool Focus(FocusState focusState, bool animateIfBringIntoView, FocusNavigationDirection focusNavigationDirection = FocusNavigationDirection.None)
{
// Get FocusManager
var pFocusManager = VisualTree.GetFocusManagerForElement(this, VisualTree.LookupOptions.NoFallback);
if (pFocusManager == null)
{
return(false);
}
// FocusMovement is OK with NULL parameter, sets focusChanged to false
FocusMovement movement = new FocusMovement(this, focusNavigationDirection, focusState);
movement.AnimateIfBringIntoView = animateIfBringIntoView;
FocusMovementResult result = pFocusManager.SetFocusedElement(movement);
var focusChanged = result.WasMoved;
return(focusChanged);
}
internal static DirectionalFocusInfo TryDirectionalFocus(IFocusManager focusManager, FocusNavigationDirection direction, DependencyObject searchScope)
{
var info = DirectionalFocusInfo.Default;
if (direction == FocusNavigationDirection.Next ||
direction == FocusNavigationDirection.Previous ||
direction == FocusNavigationDirection.None)
{
return(info);
}
// We do not want to process direction focus if the element is not a UIElement (ie. Hyperlink)
if (!(searchScope is UIElement uiElement))
{
return(info);
}
var mode = uiElement.XYFocusKeyboardNavigation;
if (mode == XYFocusKeyboardNavigationMode.Disabled)
{
info.ShouldBubble = false;
}
else if (mode == XYFocusKeyboardNavigationMode.Enabled)
{
info.DirectionalFocusEnabled = true;
var xyFocusOptions = XYFocusOptions.Default;
xyFocusOptions.SearchRoot = searchScope;
xyFocusOptions.ShouldConsiderXYFocusKeyboardNavigation = true;
var candidate = focusManager.FindNextFocus(new FindFocusOptions(direction), xyFocusOptions, null, true);
if (candidate != null)
{
FocusMovementResult result = focusManager.SetFocusedElement(new FocusMovement(candidate, direction, FocusState.Keyboard));
info.Handled = result.WasMoved;
info.FocusCandidateFound = true;
}
}
return(info);
}
public void ValidateTryDirectionalFocus()
{
var element = new Control();
element.XYFocusKeyboardNavigation = XYFocusKeyboardNavigationMode.Enabled;
var candidate = new Control();
candidate.XYFocusKeyboardNavigation = XYFocusKeyboardNavigationMode.Disabled;
var focusManagerMock = new MockFocusManager();
focusManagerMock.FindNextFocusResult = candidate;
var result = new FocusMovementResult(true, false);
focusManagerMock.SetFocusedElementResult = result;
var info = FocusSelection.TryDirectionalFocus(focusManagerMock, FocusNavigationDirection.Right, element);
Assert.IsTrue(info.Handled);
}
