110 lines
3.5 KiB
HTML
110 lines
3.5 KiB
HTML
<!doctype html>
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<title>CodeMirror: Multiple Buffer & Split View Demo</title>
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<meta charset="utf-8"/>
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<link rel=stylesheet href="../doc/docs.css">
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<link rel="stylesheet" href="../lib/codemirror.css">
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<script src="../lib/codemirror.js"></script>
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<script src="../mode/javascript/javascript.js"></script>
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<script src="../mode/css/css.js"></script>
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<style id=style>
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.CodeMirror {border: 1px solid black; height: 250px;}
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</style>
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<div id=nav>
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<a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
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<ul>
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<li><a href="../index.html">Home</a>
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<li><a href="../doc/manual.html">Manual</a>
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<li><a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li><a class=active href="#">Multiple Buffer & Split View</a>
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</ul>
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</div>
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<article>
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<h2>Multiple Buffer & Split View Demo</h2>
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<div id=code_top></div>
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<div>
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Select buffer: <select id=buffers_top></select>
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<button onclick="newBuf('top')">New buffer</button>
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</div>
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<div id=code_bot></div>
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<div>
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Select buffer: <select id=buffers_bot></select>
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<button onclick="newBuf('bot')">New buffer</button>
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</div>
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<script id=script>
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var sel_top = document.getElementById("buffers_top");
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CodeMirror.on(sel_top, "change", function() {
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selectBuffer(ed_top, sel_top.options[sel_top.selectedIndex].value);
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});
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var sel_bot = document.getElementById("buffers_bot");
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CodeMirror.on(sel_bot, "change", function() {
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selectBuffer(ed_bot, sel_bot.options[sel_bot.selectedIndex].value);
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});
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var buffers = {};
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function openBuffer(name, text, mode) {
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buffers[name] = CodeMirror.Doc(text, mode);
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var opt = document.createElement("option");
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opt.appendChild(document.createTextNode(name));
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sel_top.appendChild(opt);
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sel_bot.appendChild(opt.cloneNode(true));
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}
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function newBuf(where) {
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var name = prompt("Name for the buffer", "*scratch*");
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if (name == null) return;
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if (buffers.hasOwnProperty(name)) {
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alert("There's already a buffer by that name.");
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return;
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}
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openBuffer(name, "", "javascript");
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selectBuffer(where == "top" ? ed_top : ed_bot, name);
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var sel = where == "top" ? sel_top : sel_bot;
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sel.value = name;
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}
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function selectBuffer(editor, name) {
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var buf = buffers[name];
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if (buf.getEditor()) buf = buf.linkedDoc({sharedHist: true});
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var old = editor.swapDoc(buf);
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var linked = old.iterLinkedDocs(function(doc) {linked = doc;});
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if (linked) {
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// Make sure the document in buffers is the one the other view is looking at
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for (var name in buffers) if (buffers[name] == old) buffers[name] = linked;
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old.unlinkDoc(linked);
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}
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editor.focus();
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}
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function nodeContent(id) {
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var node = document.getElementById(id), val = node.textContent || node.innerText;
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val = val.slice(val.match(/^\s*/)[0].length, val.length - val.match(/\s*$/)[0].length) + "\n";
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return val;
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}
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openBuffer("js", nodeContent("script"), "javascript");
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openBuffer("css", nodeContent("style"), "css");
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var ed_top = CodeMirror(document.getElementById("code_top"), {lineNumbers: true});
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selectBuffer(ed_top, "js");
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var ed_bot = CodeMirror(document.getElementById("code_bot"), {lineNumbers: true});
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selectBuffer(ed_bot, "js");
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</script>
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<p>Demonstration of
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using <a href="../doc/manual.html#linkedDoc">linked documents</a>
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to provide a split view on a document, and
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using <a href="../doc/manual.html#swapDoc"><code>swapDoc</code></a>
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to use a single editor to display multiple documents.</p>
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</article>
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