public bool IsItemsEqual(SelectionRange rangeIntersection, SelectionRangeWithItems rangeWithItemsToCompare)
{
OptimizedItemsList itemsToCompare = rangeWithItemsToCompare.m_items;
if ((m_items == null) || (itemsToCompare == null))
{
return(true);
}
SelectionRange rangeToCompare = rangeWithItemsToCompare.Range;
int startIndex = Math.Min(rangeIntersection.StartIndex, rangeIntersection.EndIndex);
int itemIndex1 = Math.Abs(startIndex - m_range.StartIndex);
int itemIndex2 = Math.Abs(startIndex - rangeToCompare.StartIndex);
bool inversedRange1 = m_range.StartIndex > m_range.EndIndex;
bool inversedRange2 = rangeToCompare.StartIndex > rangeToCompare.EndIndex;
int count = rangeIntersection.Length;
for (int i = 0; i < count; i++)
{
if (!object.Equals(m_items[itemIndex1], itemsToCompare[itemIndex2]))
{
return(false);
}
itemIndex1 = inversedRange1 ? itemIndex1 - 1 : itemIndex1 + 1;
itemIndex2 = inversedRange2 ? itemIndex2 - 1 : itemIndex2 + 1;
}
return(true);
}
internal SelectionRangeWithItems( SelectionRange range, SharedList items )
{
if( ( items.Count != range.Length ) && ( !range.IsEmpty ) )
throw new ArgumentException( "selectionRange and items must have the same length." );
m_items = new OptimizedItemsList( items );
m_range = range;
}
internal SelectionRangeWithItems(SelectionRange range, SharedList items)
{
if ((items.Count != range.Length) && (!range.IsEmpty))
{
throw new ArgumentException("selectionRange and items must have the same length.");
}
m_items = new OptimizedItemsList(items);
m_range = range;
}