public RegisteredElementForEmptyTextValidation(FrameworkElement element, IFormKeyboardFocusChanged form, Func <string> textFunction, bool ignoreFocus = false)
{
Element = element;
FocusScopeElement = form;
TextFunction = textFunction;
GotFocusOnce = ignoreFocus;
}
public static void UnregisterFromEmptyTextValidation(IFormKeyboardFocusChanged form)
{
List <RegisteredElementForEmptyTextValidation> elementsToRemove =
RegisteredElementsForEmptyTextValidation.Where(s => s.FocusScopeElement == form).ToList();
//
// Notice that all this code controls the attached property InfoBalloon.IsOpen on autocompleteboxes,
// textboxes etc that registered.
// Don't forget to reset this property when unregistering.
//
elementsToRemove.ForEach(e => e.Element.ClearValue(IsOpenProperty));
elementsToRemove.ForEach(e => RegisteredElementsForEmptyTextValidation.Remove(e));
}
public static void RegisterForAutomaticEmptyTextValidation(
FrameworkElement element,
Func <string> textFunc,
IFormKeyboardFocusChanged form,
bool ignoreFocus = false
)
{
if (form != null && RegisteredElementsForEmptyTextValidation.All(s => s.FocusScopeElement != form))
{
form.KeyboardFocusForValidationChanged += OnKeyboardFocusChanged;
}
RegisterForEmptyTextValidation(element, textFunc, form, ignoreFocus);
}
public static void RegisterForEmptyTextValidation(
FrameworkElement element,
Func <string> textFunc,
IFormKeyboardFocusChanged form,
bool ignoreFocus = false
)
{
if (RegisteredElementsForEmptyTextValidation.All(s => s.Element != element))
{
RegisteredElementsForEmptyTextValidation.Add(
new RegisteredElementForEmptyTextValidation(element, form, textFunc, ignoreFocus)
);
}
}
public static void UnregisterFromAutomaticEmptyTextValidation(IFormKeyboardFocusChanged form)
{
UnregisterFromEmptyTextValidation(form);
form.KeyboardFocusForValidationChanged -= OnKeyboardFocusChanged;
}
