|
static private InternalSetIsValid ( |
||
| obj | ||
| value | bool | |
| return | void | |
private void ValidationSourceUnloaded(object sender, RoutedEventArgs e)
{
if (sender is FrameworkElement)
{
((FrameworkElement)sender).Unloaded -= ValidationSourceUnloaded;
}
else
{
((FrameworkContentElement)sender).Unloaded -= ValidationSourceUnloaded;
}
// An unloaded control might be loaded again. Then we need to restore the validation errors.
Tuple <object, ValidationError>[] errorsToRemove = errors.Where(err => err.Item1 == sender).ToArray();
if (errorsToRemove.Any())
{
// It keeps alive because it listens to the Loaded event.
new ValidationReloadedTracker(this, errorsToRemove.First().Item1, errorsToRemove.Select(x => x.Item2));
foreach (Tuple <object, ValidationError> error in errorsToRemove)
{
errors.Remove(error);
}
}
ValidationHelper.InternalSetIsValid(owner, !errors.Any());
}
internal void AddErrors(object validationSource, IEnumerable <ValidationError> errors)
{
foreach (ValidationError error in errors)
{
AddError(validationSource, error);
}
ValidationHelper.InternalSetIsValid(owner, !errors.Any());
}
private void ErrorChangedHandler(object?sender, ValidationErrorEventArgs e)
{
if (e.Action == ValidationErrorEventAction.Added)
{
AddError(e.OriginalSource, e.Error);
}
else
{
var error = errors.FirstOrDefault(err => err.Item1 == e.OriginalSource && err.Item2 == e.Error);
if (error != null)
{
errors.Remove(error);
}
}
ValidationHelper.InternalSetIsValid(owner, !errors.Any());
}