!752

!include #1004828 // Java Analysis

static new JTextArea infoArea;

p {
  loadConceptsFrom("#1004820");
  SSnippet snippet = conceptOfType(SSnippet.class);
  L<Substring> substrings = sortedByField(findBackRefs(snippet, Substring.class), "startIndex");
  print("substrings: " + l(substrings));
  new StringBuilder buf;
  int i = 0, iCol = 0;
  for (Substring s : substrings) {
    //print("s/e= " + s.startIndex + "/" + s.endIndex);
    buf.append(htmlencode(substring(snippet.text, i, s.startIndex)));
    S col = odd(iCol++) 
      //? "#b8d1f3" : "#dae5f4";
      ? "#CC0000" : "#0000CC"; // Coder Colors!
    buf.append(span(b(href(str(s.id), htmlencode(s.text()))), "style", "color: " + col));
    i = s.endIndex;
  }
  buf.append(htmlencode(substring(snippet.text, i)));
  
  S html = hhtml(pre(buf));
  JEditorPane editorPane = new JEditorPane("text/html", html);
  editorPane.setEditable(false);
  editorPane.addHyperlinkListener(new HyperlinkListener {
    public void hyperlinkUpdate(HyperlinkEvent e) {
      S link = e.getDescription();
      HyperlinkEvent.EventType type = e.getEventType();
      
      //print("Event! " + e.getEventType() + " " + link);
      
      if (type == HyperlinkEvent.EventType.ENTERED)
        showInfo(link);
      else if (type == HyperlinkEvent.EventType.EXITED)
        showInfo(null);
    }
  });
  showFrame(vgrid(editorPane, infoArea));
}

static void showInfo(S id) {
  new StringBuilder buf;
  Concept c = getConcept(id);
  if (c != null) {
    buf.append(shortClassName(c));
    if (c instanceof Substring)
      buf.append(" " + quote(((Substring) c).text()));
  }
  infoArea.setText(str(buf));
  infoArea.setCaretPosition(0);
}