private BlockElement ParseHtmlToBlocks(string html)
{
IResourceProvider provider = ServiceRegistry.GetService<IResourceProvider>();
StyleParser styles = new StyleParser(provider);
BlockElement root, currentBlock;
root = currentBlock = new BlockElement("root", styles.Style); // this is the root!
// if this is not HTML, do not parse tags. Otherwise search out and interpret tags.
bool parseHTML = true;
if (!parseHTML)
{
for (int i = 0; i < html.Length; i++)
currentBlock.AddAtom(new CharacterElement(styles.Style, html[i]));
}
else
{
if (m_Parser == null)
m_Parser = new HTMLparser();
m_Parser.Init(html);
HTMLchunk chunk;
while ((chunk = ParseNext(m_Parser)) != null)
{
if (!(chunk.oHTML == string.Empty))
{
// This is a span of text.
string text = chunk.oHTML;
// make sure to replace escape characters!
text = EscapeCharacters.ReplaceEscapeCharacters(text);
//Add the characters to the current box
for (int i = 0; i < text.Length; i++)
currentBlock.AddAtom(new CharacterElement(styles.Style, text[i]));
}
else
{
// This is a tag. interpret the tag and edit the openTags list.
// It may also be an atom, in which case we should add it to the list of atoms!
AElement atom = null;
if (chunk.bClosure && !chunk.bEndClosure)
{
styles.CloseOneTag(chunk);
if (currentBlock.Tag == chunk.sTag)
{
currentBlock = currentBlock.Parent;
}
}
else
{
bool isBlockTag = false;
switch (chunk.sTag)
{
// ======================================================================
// Anchor elements are added to the open tag collection as HREFs.
// ======================================================================
case "a":
styles.InterpretHREF(chunk, null);
break;
// ======================================================================
// These html elements are ignored.
// ======================================================================
case "body":
break;
// ======================================================================
// These html elements are blocks but can also have styles
// ======================================================================
case "center":
case "left":
case "right":
case "div":
atom = new BlockElement(chunk.sTag, styles.Style);
styles.ParseTag(chunk, atom);
isBlockTag = true;
break;
// ======================================================================
// These html elements are styles, and are added to the StyleParser.
// ======================================================================
case "span":
case "font":
case "b":
case "i":
case "u":
case "outline":
case "big":
case "basefont":
case "medium":
case "small":
styles.ParseTag(chunk, null);
break;
// ======================================================================
// These html elements are added as atoms only. They cannot impart style
// onto other atoms.
// ======================================================================
case "br":
atom = new CharacterElement(styles.Style, '\n');
break;
case "gumpimg":
// draw a gump image
atom = new ImageElement(styles.Style, ImageElement.ImageTypes.UI);
styles.ParseTag(chunk, atom);
break;
case "itemimg":
// draw a static image
atom = new ImageElement(styles.Style, ImageElement.ImageTypes.Item);
styles.ParseTag(chunk, atom);
break;
// ======================================================================
// Every other element is not interpreted, but rendered as text. Easy!
// ======================================================================
default:
{
string text = html.Substring(chunk.iChunkOffset, chunk.iChunkLength);
// make sure to replace escape characters!
text = EscapeCharacters.ReplaceEscapeCharacters(text);
//Add the characters to the current box
for (int i = 0; i < text.Length; i++)
currentBlock.AddAtom(new CharacterElement(styles.Style, text[i]));
}
break;
}
if (atom != null)
{
currentBlock.AddAtom(atom);
if (isBlockTag && !chunk.bEndClosure)
currentBlock = (BlockElement)atom;
}
styles.CloseAnySoloTags();
}
}
}
}
return root;
}
