// Token: 0x060039A2 RID: 14754 RVA: 0x00105630 File Offset: 0x00103830
internal static void MarkClean(DependencyObject parent, object collection)
{
WeakReference[] cleanParentList = TextElementCollectionHelper._cleanParentList;
lock (cleanParentList)
{
int num2;
int num = TextElementCollectionHelper.GetCleanParentIndex(parent, collection, out num2);
if (num == -1)
{
num = ((num2 >= 0) ? num2 : (TextElementCollectionHelper._cleanParentList.Length - 1));
TextElementCollectionHelper._cleanParentList[num] = new WeakReference(new TextElementCollectionHelper.ParentCollectionPair(parent, collection));
}
TextElementCollectionHelper.TouchCleanParent(num);
}
}
// Token: 0x060039A3 RID: 14755 RVA: 0x001056A4 File Offset: 0x001038A4
internal static bool IsCleanParent(DependencyObject parent, object collection)
{
int num = -1;
WeakReference[] cleanParentList = TextElementCollectionHelper._cleanParentList;
lock (cleanParentList)
{
int num2;
num = TextElementCollectionHelper.GetCleanParentIndex(parent, collection, out num2);
if (num >= 0)
{
TextElementCollectionHelper.TouchCleanParent(num);
}
}
return(num >= 0);
}
// Sets the element/index cache.
private void SetCache(int index, TextElementType item)
{
_indexCache = new ElementIndexCache(index, item);
TextElementCollectionHelper.MarkClean(this.Parent, this);
}
// True if the cache is reliable. Otherwise, the tree has been
// modified and it is not possible to guarantee a valid cache.
internal bool IsValid(TextElementCollection <TextElementType> collection)
{
return(_index >= 0 && TextElementCollectionHelper.IsCleanParent(_element.Parent, collection));
}
