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60 lines
2.5 KiB
HTML
60 lines
2.5 KiB
HTML
9 years ago
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<!doctype html>
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<title>CodeMirror: Indented wrapped line 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/xml/xml.js"></script>
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<style type="text/css">
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.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
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.CodeMirror pre > * { text-indent: 0px; }
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</style>
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<div id=nav>
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<a href="http://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="#">Indented wrapped line</a>
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</ul>
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</div>
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<article>
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<h2>Indented wrapped line demo</h2>
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<form><textarea id="code" name="code">
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<!doctype html>
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<body>
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<h2 id="overview">Overview</h2>
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<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>
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<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>
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</body>
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</textarea></form>
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<p>This page uses a hack on top of the <code>"renderLine"</code>
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event to make wrapped text line up with the base indentation of
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the line.</p>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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lineNumbers: true,
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lineWrapping: true,
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mode: "text/html"
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});
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var charWidth = editor.defaultCharWidth(), basePadding = 4;
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editor.on("renderLine", function(cm, line, elt) {
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var off = CodeMirror.countColumn(line.text, null, cm.getOption("tabSize")) * charWidth;
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elt.style.textIndent = "-" + off + "px";
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elt.style.paddingLeft = (basePadding + off) + "px";
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});
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editor.refresh();
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</script>
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</article>
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