internal static bool IsFocusable(DependencyObject?dependencyObject)
{
bool isFocusable = false;
var objectAsUI = dependencyObject as UIElement;
if (objectAsUI != null && objectAsUI.SkipFocusSubtree)
{
return(false);
}
if (dependencyObject is Control control)
{
isFocusable = control.IsFocusable;
}
else if (FocusableHelper.GetIFocusableForDO(dependencyObject) is { } ifocusable)
{
isFocusable = ifocusable.IsFocusable();
}
private Rect GetOriginToComponent(DependencyObject?pOldFocusedElement)
{
Rect focusedElementBounds = new Rect();
//Transform the bounding rect of currently focused element to Component's co-ordinate space
if (pOldFocusedElement != null)
{
if (FocusableHelper.GetIFocusableForDO(pOldFocusedElement) is { } focusable)
{
//TODO Uno: Implement support for HyperLink focus
//DependencyObject depObj = focusable.GetDOForIFocusable();
//IFC_RETURN(do_pointer_cast<CTextElement>(depObj).GetContainingFrameworkElement().GetGlobalBounds(&focusedElementBounds, true));
}
else
{
UIElement?pUIElement = pOldFocusedElement as UIElement;
if (pUIElement != null)
{
focusedElementBounds = pUIElement.GetGlobalBounds(true);
}
}
}
private static DependencyProperty?GetXYFocusNavigationStrategyPropertyIndex(
DependencyObject element,
FocusNavigationDirection direction)
{
DependencyProperty?property = null;
if (element.IsRightToLeft())
{
if (direction == FocusNavigationDirection.Left)
{
direction = FocusNavigationDirection.Right;
}
else if (direction == FocusNavigationDirection.Right)
{
direction = FocusNavigationDirection.Left;
}
}
if (direction == FocusNavigationDirection.Left)
{
if (element is UIElement)
{
property = UIElement.XYFocusLeftNavigationStrategyProperty;
}
else if (FocusableHelper.GetIFocusableForDO(element) is IFocusable focusable)
{
property = focusable.GetXYFocusLeftNavigationStrategyPropertyIndex();
}
}
else if (direction == FocusNavigationDirection.Right)
{
if (element is UIElement)
{
property = UIElement.XYFocusRightNavigationStrategyProperty;
}
else if (FocusableHelper.GetIFocusableForDO(element) is IFocusable focusable)
{
property = focusable.GetXYFocusRightNavigationStrategyPropertyIndex();
}
}
else if (direction == FocusNavigationDirection.Up)
{
if (element is UIElement)
{
property = UIElement.XYFocusUpNavigationStrategyProperty;
}
else if (FocusableHelper.GetIFocusableForDO(element) is IFocusable focusable)
{
property = focusable.GetXYFocusUpNavigationStrategyPropertyIndex();
}
}
else if (direction == FocusNavigationDirection.Down)
{
if (element is UIElement)
{
property = UIElement.XYFocusDownNavigationStrategyProperty;
}
else if (FocusableHelper.GetIFocusableForDO(element) is IFocusable focusable)
{
property = focusable.GetXYFocusDownNavigationStrategyPropertyIndex();
}
}
return(property);
}
