--- /dev/null
+<!doctype html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CodeMirror: Multiple Buffer & Split View 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/css/css.js"></script>
+ <link rel="stylesheet" href="../doc/docs.css">
+
+ <style type="text/css" id=style>
+ .CodeMirror {border: 1px solid black; height: 250px;}
+ </style>
+ </head>
+ <body>
+ <h1>CodeMirror: Multiple Buffer & Split View Demo</h1>
+
+ <div id=code_top></div>
+ <div>
+ Select buffer: <select id=buffers_top></select>
+ <button onclick="newBuf('top')">New buffer</button>
+ </div>
+ <div id=code_bot></div>
+ <div>
+ Select buffer: <select id=buffers_bot></select>
+ <button onclick="newBuf('bot')">New buffer</button>
+ </div>
+
+ <script id=script>
+var sel_top = document.getElementById("buffers_top");
+CodeMirror.on(sel_top, "change", function() {
+ selectBuffer(ed_top, sel_top.options[sel_top.selectedIndex].value);
+});
+
+var sel_bot = document.getElementById("buffers_bot");
+CodeMirror.on(sel_bot, "change", function() {
+ selectBuffer(ed_bot, sel_bot.options[sel_bot.selectedIndex].value);
+});
+
+var buffers = {};
+
+function openBuffer(name, text, mode) {
+ buffers[name] = CodeMirror.Doc(text, mode);
+ var opt = document.createElement("option");
+ opt.appendChild(document.createTextNode(name));
+ sel_top.appendChild(opt);
+ sel_bot.appendChild(opt.cloneNode(true));
+}
+
+function newBuf(where) {
+ var name = prompt("Name for the buffer", "*scratch*");
+ if (name == null) return;
+ if (buffers.hasOwnProperty(name)) {
+ alert("There's already a buffer by that name.");
+ return;
+ }
+ openBuffer(name, "", "javascript");
+ selectBuffer(where == "top" ? ed_top : ed_bot, name);
+ var sel = where == "top" ? sel_top : sel_bot;
+ sel.value = name;
+}
+
+function selectBuffer(editor, name) {
+ var buf = buffers[name];
+ if (buf.getEditor()) buf = buf.linkedDoc({sharedHist: true});
+ var old = editor.swapDoc(buf);
+ var linked = old.iterLinkedDocs(function(doc) {linked = doc;});
+ if (linked) {
+ // Make sure the document in buffers is the one the other view is looking at
+ for (var name in buffers) if (buffers[name] == old) buffers[name] = linked;
+ old.unlinkDoc(linked);
+ }
+ editor.focus();
+}
+
+function nodeContent(id) {
+ var node = document.getElementById(id), val = node.textContent || node.innerText;
+ val = val.slice(val.match(/^\s*/)[0].length, val.length - val.match(/\s*$/)[0].length) + "\n";
+ return val;
+}
+openBuffer("js", nodeContent("script"), "javascript");
+openBuffer("css", nodeContent("style"), "css");
+
+var ed_top = CodeMirror(document.getElementById("code_top"), {lineNumbers: true});
+selectBuffer(ed_top, "js");
+var ed_bot = CodeMirror(document.getElementById("code_bot"), {lineNumbers: true});
+selectBuffer(ed_bot, "js");
+</script>
+
+ <p>Demonstration of
+ using <a href="../doc/manual.html#linkedDoc">linked documents</a>
+ to provide a split view on a document, and
+ using <a href="../doc/manual.html#swapDoc"><code>swapDoc</code></a>
+ to use a single editor to display multiple documents.</p>
+
+ </body>
+</html>