indentwrap.html (2579B)
1 <!doctype html> 2 3 <title>CodeMirror: Indented wrapped line demo</title> 4 <meta charset="utf-8"/> 5 <link rel=stylesheet href="../doc/docs.css"> 6 7 <link rel="stylesheet" href="../lib/codemirror.css"> 8 <script src="../lib/codemirror.js"></script> 9 <script src="../mode/xml/xml.js"></script> 10 <style type="text/css"> 11 .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;} 12 .CodeMirror pre > * { text-indent: 0px; } 13 </style> 14 <div id=nav> 15 <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a> 16 17 <ul> 18 <li><a href="../index.html">Home</a> 19 <li><a href="../doc/manual.html">Manual</a> 20 <li><a href="https://github.com/codemirror/codemirror">Code</a> 21 </ul> 22 <ul> 23 <li><a class=active href="#">Indented wrapped line</a> 24 </ul> 25 </div> 26 27 <article> 28 <h2>Indented wrapped line demo</h2> 29 <form><textarea id="code" name="code"> 30 <!doctype html> 31 <body> 32 <h2 id="overview">Overview</h2> 33 34 <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> 35 36 <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> 37 </body> 38 </textarea></form> 39 40 <p>This page uses a hack on top of the <code>"renderLine"</code> 41 event to make wrapped text line up with the base indentation of 42 the line.</p> 43 44 <script> 45 var editor = CodeMirror.fromTextArea(document.getElementById("code"), { 46 lineNumbers: true, 47 lineWrapping: true, 48 mode: "text/html" 49 }); 50 var charWidth = editor.defaultCharWidth(), basePadding = 4; 51 editor.on("renderLine", function(cm, line, elt) { 52 var off = CodeMirror.countColumn(line.text, null, cm.getOption("tabSize")) * charWidth; 53 elt.style.textIndent = "-" + off + "px"; 54 elt.style.paddingLeft = (basePadding + off) + "px"; 55 }); 56 editor.refresh(); 57 </script> 58 59 </article>