internal override void OnAfterItemRemovedAnimationEnded(SingleItemAnimationContext context)
{
double startingOffset = context.AssociatedItem.currentOffset;
double offset = context.RealizedLength;
////Apply the aggregated height correction to all affected visual items reamining on the viewport
for (int i = 0; i < this.owner.realizedItems.Count; i++)
{
RadVirtualizingDataControlItem firstItem = this.owner.realizedItems[i];
if (firstItem.currentOffset > startingOffset)
{
if (firstItem.previous == null || (firstItem.previous != null && firstItem.previous.currentOffset + this.GetItemLength(firstItem.previous) <= firstItem.currentOffset - offset))
{
this.SetItemOffset(firstItem, firstItem.currentOffset - offset);
}
else
{
break;
}
}
}
this.TranslateRemoveAnimatedItemsWithOffset(startingOffset, -offset);
if (this.owner.IsLoaded)
{
this.ManageLowerViewport(false);
this.CheckBottomScrollableBounds();
}
}
private void OnItemAddedAnimation_Ended(object sender, AnimationEndedEventArgs e)
{
SingleItemAnimationContext context = this.GetAnimationContextForTarget(e.AnimationInfo.Target as RadVirtualizingDataControlItem, true);
RadAnimation endedAnimation = sender as RadAnimation;
this.OnItemAddedAnimationEnded(endedAnimation, context);
}
internal virtual void OnItemRemovedAnimationEnded(RadAnimation animation, SingleItemAnimationContext context)
{
// When a remove animation ends we take it from the queue and...
this.scheduledRemoveAnimations.Remove(context);
// In case the animated container is already recycled - we hide it. This happens
// when a single item remove animation has been started, not a batch one.
if (!this.itemRemovedBatchAnimationScheduled)
{
context.AssociatedItem.Visibility = Visibility.Collapsed;
if (this.realizedItems.Count > 0)
{
this.virtualizationStrategy.OnAfterItemRemovedAnimationEnded(context);
}
else
{
this.CleanupAfterCollectionReset();
}
}
else
{
context.AssociatedItem.Visibility = Visibility.Collapsed;
if (this.scheduledRemoveAnimations.Count == 0)
{
this.itemRemovedBatchAnimationScheduled = false;
this.CleanupAfterCollectionReset();
if (this.listSource.Count == 0)
{
if (this.ItemsSource == null)
{
this.ClearReycledItems();
}
}
else
{
this.BalanceVisualSpace();
}
}
}
if (this.scheduledRemoveAnimations.Count == 0)
{
this.virtualizationStrategy.RecalculateViewportMeasurements();
}
if (this.scheduledRemoveAnimations.Count == 0 && !this.IsLoaded)
{
this.itemRemovedAnimationCache.Ended -= this.OnItemRemovedAnimation_Ended;
}
this.OnItemAnimationEnded(new ItemAnimationEndedEventArgs()
{
Animation = animation, RemainingAnimationsCount = this.scheduledRemoveAnimations.Count
});
}
internal void StopAllRemovedAnimations()
{
while (this.scheduledRemoveAnimations.Count > 0)
{
// Here we do not need to enqueue the top item since the ForceStop method will invoke the RadAnimation.Ended event where
// this is done.
SingleItemAnimationContext context = this.scheduledRemoveAnimations[0];
RadAnimationManager.ForceStop(context.AssociatedItem, this.itemRemovedAnimationCache);
}
}
internal override void OnAfterItemRemovedAnimationEnded(SingleItemAnimationContext context)
{
this.ReorderViewportItemsOnItemRemoved(context.RealizedIndex, context.AssociatedItem);
if (this.owner.IsLoaded)
{
this.ManageLowerViewport(false);
this.CheckBottomScrollableBounds();
}
}
internal virtual void OnItemAddedAnimationEnded(RadAnimation animation, SingleItemAnimationContext context)
{
this.scheduledAddAnimations.Remove(context);
context.AssociatedItem.scheduledForBatchAnimation = false;
if (this.scheduledAddAnimations.Count == 0 && !this.IsLoaded)
{
this.itemAddedAnimationCache.Ended -= this.OnItemAddedAnimation_Ended;
}
this.OnItemAnimationEnded(new ItemAnimationEndedEventArgs()
{
Animation = animation, RemainingAnimationsCount = this.scheduledAddAnimations.Count
});
}
internal override void OnItemRemovedAnimationEnded(RadAnimation animation, SingleItemAnimationContext context)
{
base.OnItemRemovedAnimationEnded(animation, context);
if (this.realizedItems.Count > 0 && this.listSource.Count > 0)
{
SingleItemAnimationContext[] animatedItems = this.scheduledRemoveAnimations.ToArray();
foreach (SingleItemAnimationContext ctxt in animatedItems)
{
if (ctxt.RealizedIndex == 0)
{
return;
}
}
this.PositionPullToRefreshIndicator();
}
}
private void OnItemRemovedAnimation_Ended(object sender, AnimationEndedEventArgs e)
{
SingleItemAnimationContext endedAnimation = this.GetAnimationContextForTarget(e.AnimationInfo.Target as RadVirtualizingDataControlItem, false);
this.OnItemRemovedAnimationEnded(sender as RadAnimation, endedAnimation);
}
internal virtual void OnAfterItemRemovedAnimationEnded(SingleItemAnimationContext context)
{
}
