/// <summary>
/// Forwards Executed events to CommandBindings.
/// </summary>
internal static void OnExecuted(object sender, ExecutedRoutedEventArgs e)
{
if ((sender != null) && (e != null) && (e.Command != null))
{
FindCommandBinding(sender, e, e.Command, true);
if (!e.Handled && (e.RoutedEvent == ExecutedEvent))
{
DependencyObject d = sender as DependencyObject;
if (d != null)
{
if (FocusManager.GetIsFocusScope(d))
{
// This element is a focus scope.
// Try to transfer the event to its parent focus scope's focused element.
IInputElement focusedElement = GetParentScopeFocusedElement(d);
if (focusedElement != null)
{
TransferEvent(focusedElement, e);
}
}
}
}
}
}
internal static bool IsFocusable(DependencyObject element)
{
// CODE
if (element == null)
{
return(false);
}
UIElement uie = element as UIElement;
if (uie != null)
{
if (uie.IsVisible == false)
{
return(false);
}
}
if ((bool)element.GetValue(UIElement.IsEnabledProperty) == false)
{
return(false);
}
// CODE
bool hasModifiers = false;
BaseValueSourceInternal valueSource = element.GetValueSource(UIElement.FocusableProperty, null, out hasModifiers);
bool focusable = (bool)element.GetValue(UIElement.FocusableProperty);
if (!focusable && valueSource == BaseValueSourceInternal.Default && !hasModifiers)
{
// The Focusable property was not explicitly set to anything.
// The default value is generally false, but true in a few cases.
if (FocusManager.GetIsFocusScope(element))
{
// Focus scopes are considered focusable, even if
// the Focusable property is false.
return(true);
}
else if (uie != null && uie.InternalVisualParent == null)
{
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(uie);
if (presentationSource != null)
{
// A UIElements that is the root of a PresentationSource is considered focusable.
return(true);
}
}
}
return(focusable);
}
internal static bool IsFocusable(DependencyObject element)
{
// This should really be its own property, but it is hard to do efficiently.
if (element == null)
{
return(false);
}
UIElement uie = element as UIElement;
if (uie != null)
{
if (uie.IsVisible == false)
{
return(false);
}
}
if ((bool)element.GetValue(UIElement.IsEnabledProperty) == false)
{
return(false);
}
// There are too many conflicting desires for whether or not
// an element is focusable. We need to differentiate between
// a false default value, and the user specifying false
// explicitly.
//
bool hasModifiers = false;
BaseValueSourceInternal valueSource = element.GetValueSource(UIElement.FocusableProperty, null, out hasModifiers);
bool focusable = (bool)element.GetValue(UIElement.FocusableProperty);
if (!focusable && valueSource == BaseValueSourceInternal.Default && !hasModifiers)
{
// The Focusable property was not explicitly set to anything.
// The default value is generally false, but true in a few cases.
if (FocusManager.GetIsFocusScope(element))
{
// Focus scopes are considered focusable, even if
// the Focusable property is false.
return(true);
}
else if (uie != null && uie.InternalVisualParent == null)
{
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(uie);
if (presentationSource != null)
{
// A UIElements that is the root of a PresentationSource is considered focusable.
return(true);
}
}
}
return(focusable);
}