--- /dev/null
+<!doctype html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CodeMirror: Mode-Changing Demo</title>
+ <link rel="stylesheet" href="../lib/codemirror.css">
+ <script src="../lib/codemirror.js"></script>
+ <script src="../mode/javascript/javascript.js"></script>
+ <script src="../mode/scheme/scheme.js"></script>
+ <link rel="stylesheet" href="../doc/docs.css">
+
+ <style type="text/css">
+ .CodeMirror {border: 1px solid black;}
+ </style>
+ </head>
+ <body>
+ <h1>CodeMirror: Mode-Changing demo</h1>
+
+ <form><textarea id="code" name="code">
+;; If there is Scheme code in here, the editor will be in Scheme mode.
+;; If you put in JS instead, it'll switch to JS mode.
+
+(define (double x)
+ (* x x))
+</textarea></form>
+
+<p>On changes to the content of the above editor, a (crude) script
+tries to auto-detect the language used, and switches the editor to
+either JavaScript or Scheme mode based on that.</p>
+
+<script>
+ var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+ mode: "scheme",
+ lineNumbers: true,
+ tabMode: "indent"
+ });
+ editor.on("change", function() {
+ clearTimeout(pending);
+ setTimeout(update, 400);
+ });
+ var pending;
+ function looksLikeScheme(code) {
+ return !/^\s*\(\s*function\b/.test(code) && /^\s*[;\(]/.test(code);
+ }
+ function update() {
+ editor.setOption("mode", looksLikeScheme(editor.getValue()) ? "scheme" : "javascript");
+ }
+</script>
+ </body>
+</html>