private async Task RestoreToc(NavigationRecord record, TOCAccessMode mode)
{
if (record.BookId != Publication.BookId)
{
var publications = SessionService.SessionState[ALL_PUBLICATIONS_SESSION_KEY] as List <PublicationViewModel>;
Publication = publications.FirstOrDefault(x => x.BookId == record.BookId);
root = await PublicationUtil.Instance.GetDlBookTOC(Publication.BookId);
listAll = root.ChildNodes;
firstNode = null;
GetFirstTocNode(listAll, ref firstNode);
var indexs = await InitialIndexMenu(Publication.BookId);
IndexMenuCollections = new ObservableCollection <IndexMenuItem>(indexs);
HasIndex = IndexMenuCollections == null || IndexMenuCollections.Count == 0 ? false : true;
Keywords = string.Empty;
IsPBO = await PageSearchUtil.Instance.IsPBO(Publication.BookId);
}
CurrentTocNode = new TocCurrentNode
{
ID = record.TOCId,
Role = NodeExpandStatue.Leaf
};
var nodes = await InitialBreadcrumMenu(record, mode);
BreadcrumbNavigator = new ObservableCollection <BreadcrumbNav>(nodes);
}
private async Task <List <BreadcrumbNav> > InitialBreadcrumMenu(NavigationRecord record, TOCAccessMode mode)
{
List <BreadcrumbNav> selectedBreadcrumbNavs = null;
//restore toc and get content
if (CurrentTocNode != null && CurrentTocNode.ID != 0)
{
List <TOCNode> selectedNodes = new List <TOCNode>();
TOCNode tocNode = null;
GetTocNodeByID(listAll, ref tocNode, CurrentTocNode.ID);
if (CurrentTocNode.Role == NodeExpandStatue.Leaf)
{
switch (mode)
{
case TOCAccessMode.All:
var content1 = await PublicationContentUtil.Instance.GetContentFromTOC(record.BookId, tocNode);
ChangeTocContent(await HtmlHelper.PageSplit(content1, record), record.TOCId);
HistoryNavigator.Record(Publication.BookId, tocNode.ID, record.Type, record.PageNum, record.Tag);
break;
case TOCAccessMode.IgnoreHistory:
var content2 = await PublicationContentUtil.Instance.GetContentFromTOC(record.BookId, tocNode, false);
ChangeTocContent(await HtmlHelper.PageSplit(content2, record), record.TOCId);
break;
case TOCAccessMode.NoReload:
break;
}
CurrentLevel = tocNode.NodeLevel - 1;
}
else if (CurrentTocNode.Role == NodeExpandStatue.Expand)
{
CurrentLevel = tocNode.NodeLevel;
}
else if (CurrentTocNode.Role == NodeExpandStatue.Collapse)
{
CurrentLevel = tocNode.NodeLevel - 1;
}
//add parent
TOCNode tempNode = tocNode.ParentNode;
while (tempNode != null && tempNode.NodeLevel > 0)
{
selectedNodes.Insert(0, tempNode);
tempNode = tempNode.ParentNode;
}
//add me and children
if (CurrentTocNode.Role == NodeExpandStatue.Expand)
{
selectedNodes.Add(tocNode);
selectedNodes.AddRange(tocNode.ChildNodes);
}
else
{
selectedNodes.AddRange(tocNode.ParentNode.ChildNodes);
}
selectedBreadcrumbNavs = selectedNodes.Select(node => new BreadcrumbNav
{
ID = node.ID,
Title = node.Title,
GuideCardTitle = node.GuideCardTitle,
Role = node.Role,
NodeLevel = node.NodeLevel,
ChildNodes = node.ChildNodes,
ParentId = node.ParentId,
ParentNode = node.ParentNode,
Icon = node.Role == Constants.ANCESTOR ? (node.NodeLevel > CurrentLevel ? COLLAPSED_ICON : EXPAND_ICON) : LEAF_NODE_ICON,
IsHighLight = node.ID == CurrentTocNode.ID
}).ToList <BreadcrumbNav>();
}
else
{
CurrentTocNode = new TocCurrentNode
{
ID = record.TOCId,
Role = NodeExpandStatue.Leaf
};
CurrentLevel = 0;
var content = await PublicationContentUtil.Instance.GetContentFromTOC(record.BookId, firstNode);
ChangeTocContent(await HtmlHelper.PageSplit(content, record), record.TOCId);
HistoryNavigator.Record(Publication.BookId, record.TOCId, record.Type, record.PageNum, record.Tag);
selectedBreadcrumbNavs = listAll.Select(node => new BreadcrumbNav
{
ID = node.ID,
Title = node.Title,
GuideCardTitle = node.GuideCardTitle,
Role = node.Role,
NodeLevel = node.NodeLevel,
ChildNodes = node.ChildNodes,
ParentId = node.ParentId,
ParentNode = root,
Icon = node.Role == Constants.ANCESTOR ? COLLAPSED_ICON : LEAF_NODE_ICON,
IsHighLight = false
}).ToList();
selectedBreadcrumbNavs[0].IsHighLight = true;
}
selectedBreadcrumbNavs.Insert(0, new BreadcrumbNav
{
ID = 0,
Title = "Table of Contents",
NodeLevel = 0,
ChildNodes = root.ChildNodes
});
return(selectedBreadcrumbNavs);
}