internal VirtualizedItemInfo GetVirtualizedItemInfoAtIndex(int index, bool createPageIfLineNotFound, bool preventMovePageToFront)
{
VirtualizedItemInfo virtualizedItemInfo = null;
VirtualPage page = this.GetPageOrDefaultForItemIndex(index, preventMovePageToFront);
if (page != null)
{
virtualizedItemInfo = page.GetVirtualizedItemInfoAtIndex(index);
Debug.Assert(virtualizedItemInfo != null);
//if( ( virtualizedItemInfo == null ) && ( createPageIfLineNotFound ) )
//{
// // No VirtualizedItemInfo was found at the requested index.
// LinkedListNode<VirtualPage> firstPageNode = m_pageNodes.First;
// Debug.Assert( firstPageNode != null, "If the page is not null, there should be at least one page in the book." );
// if( firstPageNode.Value != page )
// {
//
// page = this.CreateNewPage( index );
// virtualizedItemInfo = page.GetVirtualizedItemInfoAtIndex( index );
// this.AddPageToFront( page );
// }
//}
}
else if (createPageIfLineNotFound)
{
page = this.CreateNewPage(index);
virtualizedItemInfo = page.GetVirtualizedItemInfoAtIndex(index);
m_pagingManager.AddPage(page, VirtualPageManager.PageInsertPosition.Front);
}
return(virtualizedItemInfo);
}
internal VirtualizedItemInfo GetVirtualizedItemInfoAtIndex(int index, bool createPageIfLineNotFound, bool preventMovePageToFront)
{
VirtualizedItemInfo virtualizedItemInfo = null;
VirtualPage page = this.GetPageOrDefaultForItemIndex(index, preventMovePageToFront);
if (page != null)
{
virtualizedItemInfo = page.GetVirtualizedItemInfoAtIndex(index);
Debug.Assert(virtualizedItemInfo != null);
}
else if (createPageIfLineNotFound)
{
page = this.CreateNewPage(index);
virtualizedItemInfo = page.GetVirtualizedItemInfoAtIndex(index);
m_pagingManager.AddPage(page, VirtualPageManager.PageInsertPosition.Front);
}
return(virtualizedItemInfo);
}
