/// <summary>
/// Get First And Last TOCNode
/// </summary>
/// <param name="treeNode"></param>
/// <returns>item1:firstNode,item2:lastnode</returns>
public Tuple <TOCNode, TOCNode> GetFirstAndLastTOCNode(TOCNode treeNode)
{
if (treeNode != null)
{
var node = treeNode.GetRootTOCNode();
if (node != null)
{
return(new Tuple <TOCNode, TOCNode>(node.GetFirstPage(), node.GetLastPage()));
}
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="currentTOCNode">full tree node</param>
/// <returns>null:have come to the last page</returns>
public TOCNode GetNextPageByTreeNode(TOCNode currentTOCNode)
{
if (currentTOCNode != null)
{
var rootNode = currentTOCNode.GetRootTOCNode();
if (rootNode != null)
{
return(publicationContentService.GetNextTOCNode(currentTOCNode.ID, currentTOCNode.ID, rootNode, true));
}
}
return(null);
}
/// <summary>
/// get toc node by tocid and a full node tree from GetTOCByBookId
/// </summary>
/// <param name="tocId">tocId</param>
/// <param name="rootTOCNode">root node from GetTOCByBookId</param>
/// <returns></returns>
public TOCNode GetTOCByTOCId(int tocId, TOCNode rootTOCNode)
{
if (rootTOCNode != null)
{
var node = rootTOCNode.GetRootTOCNode();
if (node != null)
{
return(publicationContentService.GetTOCByTOCId(tocId, node));
}
}
return(null);
}