private string GetLevelText(Item item)
{
// Anything at level 2 should use the counter for its number, for example
// 1. H2, 2. H3 (and Level 1 is just a holder level, not used except to balance the tree)
if (item.Level > Tree.GetRootLevel())
{
// Traverse back to the root, getting the index position of each parent amongst its siblings
List<int> positions = new List<int>();
Item itemParent = item.Parent;
positions.Add(itemParent.GetPositionAmongSiblings());
while (itemParent != null && itemParent.Parent != null && itemParent.Level > Tree.GetRootLevel())
{
itemParent = itemParent.Parent;
positions.Add(itemParent.GetPositionAmongSiblings());
}
positions.Reverse();
return string.Join(".", positions.ToArray()) + ".";
}
else
{
// H2s are the root items, so use their position
return "";
}
}
private void GenerateHtmlFromItem(Item parent)
{
foreach (Item item in parent.Children)
{
_htmlOutput += ItemStart;
_htmlOutput += ReplaceTokensWithValues(item);
if (item.HasChildren())
{
_htmlOutput += LevelStart;
GenerateHtmlFromItem(item);
_htmlOutput += LevelEnd;
}
_htmlOutput += ItemEnd;
}
}
public string ReplaceTokensWithValues(Item item)
{
// <li><a href=""#{id}"">{level}.{itemnumber} {title}</a></li>
string result = ItemFormat;
result = result.Replace("{id}", item.Id);
result = result.Replace("{levels}", GetLevelText(item));
if (item.Level > Tree.GetRootLevel())
{
result = result.Replace("{itemnumber}", item.GetPositionAmongSiblings().ToString());
}
else
{
result = result.Replace("{itemnumber}", item.GetPositionAmongSiblings().ToString() + ".");
}
result = result.Replace("{title}", item.Title);
return result;
}
public void AddChild(Item item)
{
item.Parent = this;
item.Level = Level + 1;
_children.Add(item);
}
public string CreateHtml(Item parent)
{
_htmlOutput = "";
GenerateHtmlFromItem(parent);
return _htmlOutput;
}