/// <summary>
/// Shows a validation failure.
/// </summary>
/// <param name="validationFailure">Information about the validation failure, including the element on which to show the validation and the validation result.</param>
public void ShowValidationFailure(ValidationElementResult validationFailure)
{
var errorTemplate = ValidationScope.GetValidationTemplate(validationFailure.Element);
if (errorTemplate != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(validationFailure.Element);
if (adornerLayer != null)
{
validationFailure.Element.Loaded += Element_Loaded;
FocusExtensions.Monitor(validationFailure.Element);
var existingAdorner = validationFailure.Element.GetValue(ValidationErrorAdornerProperty) as TemplatedAdorner;
if (existingAdorner != null)
{
// Update the message displayed in the existing adorner
existingAdorner.DataContext = validationFailure.Result.Message;
}
else
{
var adorner = new TemplatedAdorner(validationFailure.Element, validationFailure.Result.Message, errorTemplate);
adornerLayer.Add(adorner);
validationFailure.Element.SetValue(ValidationErrorAdornerProperty, adorner);
}
}
}
}
private void SetUpAdorner()
{
DragDropAdornerTemplate Template =
this.Element.TryFindResource(new ComponentResourceKey(typeof(DragDrop), typeof(TPanelType))) as DragDropAdornerTemplate
?? this.Element.TryFindResource(new ComponentResourceKey(typeof(DragDrop), typeof(object))) as DragDropAdornerTemplate;
this.adornerData = new PanelAdornerData(this.GetOrientation());
this.adorner = new TemplatedAdorner(this.Element, Template, this.adornerData);
AdornerLayer.GetAdornerLayer(this.Element).Add(this.adorner);
}
/// <summary>
/// Implemented by derived classes to set up an adorner that visualizes UI feedback for drap'n'drop oeprations on this element
/// </summary>
protected override void SetUpAdorner()
{
DragDropAdornerTemplate Template =
this.Element.TryFindResource(new ComponentResourceKey(typeof(DragDrop), typeof(UIElement))) as DragDropAdornerTemplate
?? this.Element.TryFindResource(new ComponentResourceKey(typeof(DragDrop), typeof(object))) as DragDropAdornerTemplate;
AdornerLayer AdornerLayer = AdornerLayer.GetAdornerLayer(this.Element);
if (AdornerLayer != null)
{
this.adorner = new TemplatedAdorner(this.Element, Template, null);
AdornerLayer.Add(this.adorner);
}
}
private static void ShowValidationAdornerHelper(DependencyObject targetElement, DependencyObject adornerSite, bool show, bool tryAgain)
{
UIElement siteUIElement = adornerSite as UIElement;
if (siteUIElement != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(siteUIElement);
if (adornerLayer == null)
{
if (tryAgain)
{
// try again later, perhaps giving layout a chance to create the adorner layer
adornerSite.Dispatcher.BeginInvoke(DispatcherPriority.Loaded,
new DispatcherOperationCallback(ShowValidationAdornerOperation),
new object[] { targetElement, adornerSite, show });
}
return;
}
TemplatedAdorner validationAdorner = siteUIElement.ReadLocalValue(ValidationAdornerProperty) as TemplatedAdorner;
if (show && validationAdorner == null)
{
// get the template from the site, or from the target element
ControlTemplate validationTemplate = GetErrorTemplate(siteUIElement);
if (validationTemplate == null)
{
validationTemplate = GetErrorTemplate(targetElement);
}
if (validationTemplate != null)
{
validationAdorner = new TemplatedAdorner(siteUIElement, validationTemplate);
adornerLayer.Add(validationAdorner);
siteUIElement.SetValue(ValidationAdornerProperty, validationAdorner);
}
}
else if (!show && validationAdorner != null)
{
validationAdorner.ClearChild();
adornerLayer.Remove(validationAdorner);
siteUIElement.ClearValue(ValidationAdornerProperty);
}
}
}
// Token: 0x0600597E RID: 22910 RVA: 0x0018B1FC File Offset: 0x001893FC
private static void ShowValidationAdornerHelper(DependencyObject targetElement, DependencyObject adornerSite, bool show, bool tryAgain)
{
UIElement uielement = adornerSite as UIElement;
if (uielement != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(uielement);
if (adornerLayer == null)
{
if (tryAgain)
{
adornerSite.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(Validation.ShowValidationAdornerOperation), new object[]
{
targetElement,
adornerSite,
show
});
}
return;
}
TemplatedAdorner templatedAdorner = uielement.ReadLocalValue(Validation.ValidationAdornerProperty) as TemplatedAdorner;
if (show && templatedAdorner == null)
{
ControlTemplate errorTemplate = Validation.GetErrorTemplate(uielement);
if (errorTemplate == null)
{
errorTemplate = Validation.GetErrorTemplate(targetElement);
}
if (errorTemplate != null)
{
templatedAdorner = new TemplatedAdorner(uielement, errorTemplate);
adornerLayer.Add(templatedAdorner);
uielement.SetValue(Validation.ValidationAdornerProperty, templatedAdorner);
return;
}
}
else if (!show && templatedAdorner != null)
{
templatedAdorner.ClearChild();
adornerLayer.Remove(templatedAdorner);
uielement.ClearValue(Validation.ValidationAdornerProperty);
}
}
}
private static void OnIsValidChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
var frameworkElement = (FrameworkElement)sender;
if ((bool)e.NewValue)
{
var adorner = GetAdorner(frameworkElement);
if (adorner != null)
{
adorner.Visibility = Visibility.Collapsed;
}
}
else
{
var adorner = GetAdorner(frameworkElement);
if (adorner == null)
{
adorner = new TemplatedAdorner(frameworkElement, GetErrorTemplate(frameworkElement));
SetAdorner(frameworkElement, adorner);
}
adorner.Visibility = Visibility.Visible;
}
}
private static void SetAdorner(FrameworkElement target, TemplatedAdorner value)
{
target.SetValue(AdornerProperty, value);
}
private static void AddAdorner(FrameworkElement element, object dataContext)
{
ControlTemplate template = GetValidationTemplate(element);
if (template == null) return;
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(element);
if (adornerLayer != null)
{
var adorner = new TemplatedAdorner(element, dataContext, template);
adornerLayer.Add(adorner);
element.SetValue(ValidationErrorAdornerProperty, adorner);
}
}
