| <!doctype html> |
|
|
| <title>CodeMirror: Multiple Buffer & Split View Demo</title> |
| <meta charset="utf-8"/> |
| <link rel=stylesheet href="../doc/docs.css"> |
|
|
| <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> |
| <style id=style> |
| .CodeMirror {border: 1px solid black; height: 250px;} |
| </style> |
| <div id=nav> |
| <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a> |
|
|
| <ul> |
| <li><a href="../index.html">Home</a> |
| <li><a href="../doc/manual.html">Manual</a> |
| <li><a href="https://github.com/codemirror/codemirror">Code</a> |
| </ul> |
| <ul> |
| <li><a class=active href="#">Multiple Buffer & Split View</a> |
| </ul> |
| </div> |
|
|
| <article> |
| <h2>Multiple Buffer & Split View Demo</h2> |
|
|
|
|
| <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) { |
| |
| 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> |
|
|
| </article> |
|
|
