internal void ShowSplitAdorner(bool showFeedback, TimelineDragDescriptor descriptor)
{
if (showFeedback && descriptor != null && (descriptor.TargetItem != null && !descriptor.HideSplitter))
{
TimelineItem timelineItem = (TimelineItem)null;
bool flag = false;
double num1 = 0.0;
if (descriptor.AllowBetween)
{
timelineItem = descriptor.TargetItem;
flag = (descriptor.ResultDropEffects & TimelineDropEffects.Before) != TimelineDropEffects.None;
num1 = (double)(timelineItem.Depth + descriptor.RelativeDepth);
}
else if (descriptor.TargetItem.IsExpanded && descriptor.DropInDefaultContent)
{
ElementTimelineItem elementTimelineItem = descriptor.TargetItem as ElementTimelineItem;
if (elementTimelineItem != null)
{
ISceneNodeCollection <SceneNode> defaultContent = elementTimelineItem.Element.DefaultContent;
if (defaultContent != null)
{
if (defaultContent.Count > 0 && !this.TimelineItemManager.SortByZOrder)
{
flag = true;
num1 = (double)(descriptor.TargetItem.Depth + 1);
int index = this.TimelineItemManager.ItemList.IndexOf((TimelineItem)elementTimelineItem);
int count = this.TimelineItemManager.ItemList.Count;
while (index < count - 1 && (double)this.TimelineItemManager.ItemList[index + 1].Depth >= num1)
{
++index;
}
timelineItem = this.TimelineItemManager.ItemList[index];
}
else
{
timelineItem = descriptor.TargetItem;
flag = true;
num1 = (double)(timelineItem.Depth + 1);
}
}
}
}
if (timelineItem != null)
{
Point point = ((Visual)this.ElementTree.ItemContainerGenerator.ContainerFromItem((object)timelineItem)).TransformToVisual((Visual)this).Transform(new Point(0.0, 0.0));
bool sortByZorder = this.TimelineItemManager.SortByZOrder;
double indentMultiplier = this.IndentMultiplier;
double left = num1 * this.IndentMultiplier + point.X + indentMultiplier;
double num2 = (double)((int)(this.DropSplitAdorner.ActualHeight - 1.0) / 2);
double num3 = (double)this.Resources[(object)"RowMinHeight"];
double top = point.Y - num2 + (sortByZorder ^ flag ? num3 : 0.0);
this.DropSplitAdorner.Margin = new Thickness(left, top, 0.0, 0.0);
this.DropSplitAdorner.Visibility = Visibility.Visible;
return;
}
}
this.DropSplitAdorner.Visibility = Visibility.Collapsed;
}
internal void ShowDragFeedback(bool showDragTip, Point mouseOffset, TimelineDragDescriptor timelineDragDescriptor)
{
DragTipModel dragTipModel = (DragTipModel)null;
if (showDragTip && timelineDragDescriptor != null)
{
dragTipModel = DragTipModel.FromDescriptor(timelineDragDescriptor);
}
if (dragTipModel != null)
{
if (this.DragTipModel != dragTipModel)
{
this.DragTipModel = dragTipModel;
this.DragTip.IsOpen = true;
this.OnPropertyChanged("DragTipModel");
}
if (this.timer != null)
{
this.timer.Stop();
}
}
else
{
if (this.timer == null)
{
this.timer = new DispatcherTimer(DispatcherPriority.Input);
this.timer.Interval = TimeSpan.FromSeconds(0.1);
this.timer.Tick += (EventHandler)((sender, e) =>
{
this.DragTip.IsOpen = false;
this.DragTipModel = (DragTipModel)null;
this.OnPropertyChanged("DragTipModel");
this.timer.Stop();
});
}
this.timer.Start();
}
if (showDragTip && this.DragTip.IsOpen)
{
this.DragTip.HorizontalOffset = mouseOffset.X + 10.0;
this.DragTip.VerticalOffset = mouseOffset.Y + 20.0;
}
this.DragTargetParent = !showDragTip || timelineDragDescriptor == null ? (TimelineItem)null : timelineDragDescriptor.TargetParent;
this.OnPropertyChanged("DragTargetParent");
}
