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<!doctype html>
<head> <title>CodeMirror: Code Folding Demo</title> <meta charset="utf-8"/> <link rel=stylesheet href="../doc/docs.css">
<style> .some-css { color: red; line-height: 2; } </style>
<link rel="stylesheet" href="../lib/codemirror.css"> <link rel="stylesheet" href="../addon/fold/foldgutter.css" /> <script src="../lib/codemirror.js"></script> <script src="../addon/fold/foldcode.js"></script> <script src="../addon/fold/foldgutter.js"></script> <script src="../addon/fold/brace-fold.js"></script> <script src="../addon/fold/xml-fold.js"></script> <script src="../addon/fold/indent-fold.js"></script> <script src="../addon/fold/markdown-fold.js"></script> <script src="../addon/fold/comment-fold.js"></script> <script src="../mode/javascript/javascript.js"></script> <script src="../mode/xml/xml.js"></script> <script src="../mode/css/css.js"></script> <script src="../mode/htmlmixed/htmlmixed.js"></script> <script src="../mode/python/python.js"></script> <script src="../mode/markdown/markdown.js"></script> <style> .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;} </style></head>
<body><div id=nav> <a href="https://codemirror.net/5"><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/codemirror5">Code</a> </ul> <ul> <li><a class=active href="#">Code Folding</a> </ul></div>
<article> <h2>Code Folding Demo</h2> <form> <div style="max-width: 50em; margin-bottom: 1em">JavaScript:<br> <textarea id="code" name="code"></textarea></div> <div style="max-width: 50em; margin-bottom: 1em">HTML:<br> <textarea id="code-html" name="code-html"></textarea></div> <div style="max-width: 50em; margin-bottom: 1em">JSON with custom widget:<br> <textarea id="code-json" name="code-json">{ "menu": { "id": "file", "value": "File", "popup": { "menuitem": [ {"value": "New", "onclick": "CreateNewDoc()"}, {"value": "Open", "onclick": "OpenDoc()"}, {"value": "Close", "onclick": "CloseDoc()"} ] } }} </textarea></div> <div style="max-width: 50em">Python:<br> <textarea id="code-python" name="code">def foo(): do_some_stuff() here return None
class Bar: __init__(self): if True: print("True") else: print("False")
this_code_makes_no_sense(): pass
# A comment</textarea></div> <div style="max-width: 50em">Markdown:<br> <textarea id="code-markdown" name="code"></textarea></div> </form> <script id="script">/* * Demonstration of code folding */window.onload = function() { var te = document.getElementById("code"); var sc = document.getElementById("script"); te.value = (sc.textContent || sc.innerText || sc.innerHTML).replace(/^\s*/, ""); sc.innerHTML = ""; var te_html = document.getElementById("code-html"); te_html.value = document.documentElement.innerHTML; var te_python = document.getElementById("code-python"); var te_markdown = document.getElementById("code-markdown"); te_markdown.value = "# Foo\n## Bar\n\nblah blah\n\n## Baz\n\nblah blah\n\n# Quux\n\nblah blah\n" var te_json = document.getElementById("code-json");
window.editor = CodeMirror.fromTextArea(te, { mode: "javascript", lineNumbers: true, lineWrapping: true, extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }}, foldGutter: true, gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"] }); editor.foldCode(CodeMirror.Pos(13, 0));
window.editor_json = CodeMirror.fromTextArea(te_json, { mode: {name: "javascript", json: true}, lineNumbers: true, lineWrapping: true, extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }}, foldGutter: true, gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"], foldOptions: { widget: (from, to) => { var count = undefined;
// Get open / close token var startToken = '{', endToken = '}'; var prevLine = window.editor_json.getLine(from.line); if (prevLine.lastIndexOf('[') > prevLine.lastIndexOf('{')) { startToken = '[', endToken = ']'; }
// Get json content var internal = window.editor_json.getRange(from, to); var toParse = startToken + internal + endToken;
// Get key count try { var parsed = JSON.parse(toParse); count = Object.keys(parsed).length; } catch(e) { }
return count ? `\u21A4${count}\u21A6` : '\u2194'; } } }); editor_json.foldCode(CodeMirror.Pos(5, 0));
window.editor_html = CodeMirror.fromTextArea(te_html, { mode: "text/html", lineNumbers: true, lineWrapping: true, extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }}, foldGutter: true, gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"] }); editor_html.foldCode(CodeMirror.Pos(0, 0)); editor_html.foldCode(CodeMirror.Pos(34, 0));
window.editor_python = CodeMirror.fromTextArea(te_python, { mode: "python", lineNumbers: true, extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }}, foldGutter: true, gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"] });
window.editor_markdown = CodeMirror.fromTextArea(te_markdown, { mode: "markdown", lineNumbers: true, lineWrapping: true, extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }}, foldGutter: true, gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"] });}; </script></article></body>
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