private void OnHeadingBlockParsed(BlockProcessor processor, Block block)
{
if (!(block is HeadingBlock headingBlock) || block is BlogMetadataBlock)
{
return;
}
if (headingBlock.Level < 2)
{
return; // Ignore h1 since there's no point including it.
}
var document = processor.Document;
var toc = document.Where(b => b is TableOfContentsBlock).FirstOrDefault() as TableOfContentsBlock;
if (toc == null)
{
return;
}
ContainerBlock parent = toc;
for (int i = 0; i < headingBlock.Level - 2; i++) // 2 is the minimum level we support, hence -2
{
if (!(parent.LastChild is ContainerBlock childContainer))
{
childContainer = new ListItemBlock(block.Parser);
parent.Add(childContainer);
}
parent = (ContainerBlock)parent.LastChild;
}
var headingCopy = new HeadingBlock(block.Parser)
{
Column = headingBlock.Column,
HeaderChar = headingBlock.HeaderChar,
Inline = headingBlock.Inline,
IsBreakable = headingBlock.IsBreakable,
IsOpen = headingBlock.IsOpen,
Level = headingBlock.Level,
Line = headingBlock.Line,
ProcessInlines = headingBlock.ProcessInlines,
RemoveAfterProcessInlines = headingBlock.RemoveAfterProcessInlines,
Span = headingBlock.Span
};
headingCopy.Lines = new StringLineGroup(headingBlock.Lines.Lines.Length);
headingCopy.SetAttributes(headingBlock.GetAttributes());
foreach (var line in headingBlock.Lines.Lines)
{
if (line.Slice.Text == null)
{
continue;
}
var textCopy = new StringSlice(line.Slice.Text, line.Slice.Start, line.Slice.End);
var reffableLine = new StringLine(ref textCopy);
headingCopy.Lines.Add(ref reffableLine);
}
parent.Add(headingCopy);
}
protected override void Write(HtmlRenderer renderer, HeadingBlock heading)
{
// Clone the heading block, and increment the level
var hackHeading = new HeadingBlock(heading.Parser)
{
Level = heading.Level + 1,
Column = heading.Column,
HeaderChar = heading.HeaderChar,
Inline = heading.Inline,
IsBreakable = heading.IsBreakable,
IsOpen = heading.IsOpen,
Line = heading.Line,
Lines = heading.Lines,
ProcessInlines = heading.ProcessInlines,
RemoveAfterProcessInlines = heading.RemoveAfterProcessInlines,
Span = heading.Span,
};
hackHeading.SetAttributes(heading.GetAttributes());
base.Write(renderer, hackHeading);
}