| 1 | package dolda.jsvc.next; |
| 2 | |
| 3 | import org.w3c.dom.*; |
| 4 | import org.w3c.dom.ls.*; |
| 5 | import javax.xml.validation.*; |
| 6 | import java.net.*; |
| 7 | import java.io.*; |
| 8 | import dolda.jsvc.*; |
| 9 | import dolda.jsvc.util.*; |
| 10 | |
| 11 | public class Html extends DocBuffer { |
| 12 | public static final String ns = "http://www.w3.org/1999/xhtml"; |
| 13 | private static final Schema schema = DomUtil.loadxsd("xhtml1-strict.xsd"); |
| 14 | |
| 15 | private Html(String pubid, String sysid) { |
| 16 | super(ns, "html", "html", pubid, sysid); |
| 17 | } |
| 18 | |
| 19 | public static Html xhtml11(String title) { |
| 20 | Html buf = new Html("-//W3C//DTD XHTML 1.1//EN", "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"); |
| 21 | Node html = buf.doc.getDocumentElement(); |
| 22 | Node head = DomUtil.insertel(html, "head"); |
| 23 | Node tit = DomUtil.insertel(head, "title"); |
| 24 | head.appendChild(buf.makecursor("head")); |
| 25 | DomUtil.inserttext(tit, title); |
| 26 | Node body = DomUtil.insertel(html, "body"); |
| 27 | body.appendChild(buf.makecursor("body")); |
| 28 | return(buf); |
| 29 | } |
| 30 | |
| 31 | public Element el(String name, Node contents, String... attrs) { |
| 32 | return(el(ns, name, contents, attrs)); |
| 33 | } |
| 34 | |
| 35 | public Element csslink(String href, String name) { |
| 36 | Element el = el("link", null, "rel=stylesheet", "type=text/css"); |
| 37 | if(name != null) |
| 38 | el.setAttribute("title", name); |
| 39 | el.setAttribute("href", href); |
| 40 | return(el); |
| 41 | } |
| 42 | |
| 43 | public void addcss(String href, String name) { |
| 44 | insert("head", csslink(href, name)); |
| 45 | } |
| 46 | |
| 47 | public void validate() { |
| 48 | Validator val; |
| 49 | synchronized(schema) { |
| 50 | val = schema.newValidator(); |
| 51 | } |
| 52 | try { |
| 53 | val.validate(new javax.xml.transform.dom.DOMSource(doc)); |
| 54 | } catch(org.xml.sax.SAXException e) { |
| 55 | throw(new RuntimeException(e)); |
| 56 | } catch(java.io.IOException e) { |
| 57 | /* Should never happen. */ |
| 58 | throw(new Error(e)); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | private static boolean asxhtml(Request req) { |
| 63 | String ah = req.inheaders().get("Accept"); |
| 64 | AcceptMap ctmap = AcceptMap.parse((ah == null)?"":ah); |
| 65 | AcceptMap.Entry ha = ctmap.accepts("text/html"); |
| 66 | AcceptMap.Entry xa = ctmap.accepts("text/xhtml+xml"); |
| 67 | if(xa == null) |
| 68 | xa = ctmap.accepts("application/xhtml+xml"); |
| 69 | if((ha == null) && (xa == null)) |
| 70 | return(false); |
| 71 | else if((ha != null) && (xa == null)) |
| 72 | return(false); |
| 73 | else if((ha == null) && (xa != null)) |
| 74 | return(true); |
| 75 | if(xa.q < ha.q) |
| 76 | return(false); |
| 77 | return(true); |
| 78 | } |
| 79 | |
| 80 | public void output(Request req) throws IOException { |
| 81 | finalise(); |
| 82 | validate(); |
| 83 | XmlWriter w; |
| 84 | if(asxhtml(req)) { |
| 85 | req.outheaders().put("Content-Type", "application/xhtml+xml"); |
| 86 | w = new XHtmlWriter(doc); |
| 87 | } else { |
| 88 | req.outheaders().put("Content-Type", "text/html; charset=utf-8"); |
| 89 | w = new HtmlWriter(doc); |
| 90 | } |
| 91 | w.write(req.output()); |
| 92 | } |
| 93 | } |