public int IndexFromContainer(UIElement container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
ItemContainerGenerator itemContainerGenerator = base.ItemContainerGenerator as ItemContainerGenerator;
if (itemContainerGenerator != null && itemContainerGenerator.ItemFromContainer(container) != DependencyProperty.UnsetValue)
{
object obj = container.ReadLocalValue(IndexForItemContainerProperty);
return((obj as int?) ?? (-1));
}
return(-1);
}
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);
}
}
}
public int IndexFromContainer(UIElement container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
// The generator is technically not necessary, but it ensures the container was generated and hosted by this panel.
var generator = ItemContainerGenerator as ItemContainerGenerator;
if (generator != null && generator.ItemFromContainer(container) != DependencyProperty.UnsetValue)
{
var index = container.ReadLocalValue(IndexForItemContainerProperty);
return(index as int? ?? -1);
}
return(-1);
}
// 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);
}
}
}
public int IndexFromContainer(UIElement container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
// The generator is technically not necessary, but it ensures the container was generated and hosted by this panel.
var generator = ItemContainerGenerator as ItemContainerGenerator;
if (generator != null && generator.ItemFromContainer(container) != DependencyProperty.UnsetValue)
{
var index = container.ReadLocalValue(IndexForItemContainerProperty);
return index as int? ?? -1;
}
return -1;
}
protected sealed override void OnItemsChanged(object sender, ItemsChangedEventArgs args)
{
if (args == null)
{
throw new ArgumentNullException("args");
}
ItemCollection itemCollection = ItemsOwner?.Items;
NotifyCollectionChangedAction action = args.Action;
if (action == NotifyCollectionChangedAction.Reset)
{
OnItemsChanged(itemCollection, new NotifyCollectionChangedEventArgs(action));
}
else if (itemCollection != null)
{
IItemContainerGenerator itemContainerGenerator = sender as IItemContainerGenerator;
if (itemContainerGenerator != null)
{
switch (action)
{
case NotifyCollectionChangedAction.Add:
{
int num4 = itemContainerGenerator.IndexFromGeneratorPosition(args.Position);
if (args.Position.Offset == 1)
{
num4 = itemCollection.Count - 1;
}
VirtualItemsList changedItems2 = new VirtualItemsList(itemCollection, num4, args.ItemCount);
if (!IsVirtualizing)
{
for (int k = num4; k < num4 + args.ItemCount; k++)
{
RealizeItem(k);
}
}
OnItemsChanged(itemCollection, new NotifyCollectionChangedEventArgs(action, changedItems2, num4));
break;
}
case NotifyCollectionChangedAction.Remove:
{
int num5 = itemContainerGenerator.IndexFromGeneratorPosition(args.Position);
ArrayList arrayList = new ArrayList(args.ItemCount);
for (int l = 0; l < args.ItemUICount; l++)
{
UIElement uIElement = base.InternalChildren[args.Position.Index + l];
arrayList.Add(ItemFromContainer(uIElement));
if (num5 == -1)
{
num5 = (int)uIElement.ReadLocalValue(IndexForItemContainerProperty);
}
uIElement.ClearValue(IndexForItemContainerProperty);
}
if (args.ItemUICount > 0)
{
RemoveInternalChildRange(args.Position.Index, args.ItemUICount);
}
OnItemsChanged(itemCollection, new NotifyCollectionChangedEventArgs(action, arrayList, num5));
break;
}
case NotifyCollectionChangedAction.Move:
{
int num2 = -1;
int num3 = itemContainerGenerator.IndexFromGeneratorPosition(args.Position);
VirtualItemsList changedItems = new VirtualItemsList(itemCollection, num3, args.ItemCount);
int itemUICount = args.ItemUICount;
if (itemUICount > 0)
{
UIElement[] array = new UIElement[itemUICount];
for (int i = 0; i < itemUICount; i++)
{
array[i] = base.InternalChildren[args.OldPosition.Index + i];
if (num2 == -1)
{
num2 = (int)array[i].ReadLocalValue(IndexForItemContainerProperty);
}
}
RemoveInternalChildRange(args.OldPosition.Index + Math.Min(args.OldPosition.Offset, 1), itemUICount);
for (int j = 0; j < itemUICount; j++)
{
InsertInternalChild(args.Position.Index + j, array[j]);
}
}
OnItemsChanged(itemCollection, new NotifyCollectionChangedEventArgs(action, changedItems, num3, num2));
break;
}
case NotifyCollectionChangedAction.Replace:
{
int num = itemContainerGenerator.IndexFromGeneratorPosition(args.Position);
VirtualItemsList newItems = new VirtualItemsList(itemCollection, num, args.ItemCount);
VirtualItemsList oldItems = new VirtualItemsList(null, num, args.ItemCount);
OnItemsChanged(itemCollection, new NotifyCollectionChangedEventArgs(action, newItems, oldItems, num));
break;
}
}
}
}
base.OnItemsChanged(sender, args);
InvalidateReality();
}
