public async Task FetchPrePageAtTocNode()
{
TOCNode currentToc = TOCDataManager.CurrentLeafNode;
if (currentToc == null)
{
return;
}
while (TOCDataManager.StartTocID != currentToc.ID)
{
currentToc = PublicationContentUtil.Instance.GetPreviousPageByTreeNode(currentToc);
}
currentToc = PublicationContentUtil.Instance.GetPreviousPageByTreeNode(currentToc);
TOCDataManager.CurrentLeafNode = currentToc;
TOCDataManager.StartTocID = currentToc.ID;
string htmlString = await PublicationContentUtil.Instance.GetContentFromTOC(BookID, currentToc, false);
PageViewController.PrependPageContent(htmlString, BookID, currentToc.ID.ToString(), currentToc.Title);
if (currentToc != null)
{
this.InvokeOnMainThread(() =>
HighlightLeafTocNode(currentToc)
);
}
}
