<!doctype html> <title>CodeMirror: Indented wrapped line 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/xml/xml.js"></script> <style type="text/css"> .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;} .CodeMirror pre > * { text-indent: 0px; } </style> <div id=nav> <a href="http://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="#">Indented wrapped line</a> </ul> </div> <article> <h2>Indented wrapped line demo</h2> <form><textarea id="code" name="code"> <!doctype html> <body> <h2 id="overview">Overview</h2> <p>CodeMirror is a code-editor component that can be embedded in Web pages. The core library provides <em>only</em> the editor component, no accompanying buttons, auto-completion, or other IDE functionality. It does provide a rich API on top of which such functionality can be straightforwardly implemented. See the <a href="#addons">add-ons</a> included in the distribution, and the <a href="https://github.com/jagthedrummer/codemirror-ui">CodeMirror UI</a> project, for reusable implementations of extra features.</p> <p>CodeMirror works with language-specific modes. Modes are JavaScript programs that help color (and optionally indent) text written in a given language. The distribution comes with a number of modes (see the <a href="../mode/"><code>mode/</code></a> directory), and it isn't hard to <a href="#modeapi">write new ones</a> for other languages.</p> </body> </textarea></form> <p>This page uses a hack on top of the <code>"renderLine"</code> event to make wrapped text line up with the base indentation of the line.</p> <script> var editor = CodeMirror.fromTextArea(document.getElementById("code"), { lineNumbers: true, lineWrapping: true, mode: "text/html" }); var charWidth = editor.defaultCharWidth(), basePadding = 4; editor.on("renderLine", function(cm, line, elt) { var off = CodeMirror.countColumn(line.text, null, cm.getOption("tabSize")) * charWidth; elt.style.textIndent = "-" + off + "px"; elt.style.paddingLeft = (basePadding + off) + "px"; }); editor.refresh(); </script> </article>