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1 <!doctype html>
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2
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3 <head>
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4 <title>CodeMirror: Code Folding Demo</title>
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5 <meta charset="utf-8"/>
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6 <link rel=stylesheet href="../doc/docs.css">
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7
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8 <style>
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9 .some-css {
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10 color: red;
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11 line-height: 2;
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12 }
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13 </style>
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14
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15 <link rel="stylesheet" href="../lib/codemirror.css">
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16 <link rel="stylesheet" href="../addon/fold/foldgutter.css" />
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17 <script src="../lib/codemirror.js"></script>
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18 <script src="../addon/fold/foldcode.js"></script>
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19 <script src="../addon/fold/foldgutter.js"></script>
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20 <script src="../addon/fold/brace-fold.js"></script>
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21 <script src="../addon/fold/xml-fold.js"></script>
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22 <script src="../addon/fold/indent-fold.js"></script>
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23 <script src="../addon/fold/markdown-fold.js"></script>
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24 <script src="../addon/fold/comment-fold.js"></script>
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25 <script src="../mode/javascript/javascript.js"></script>
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26 <script src="../mode/xml/xml.js"></script>
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27 <script src="../mode/css/css.js"></script>
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28 <script src="../mode/htmlmixed/htmlmixed.js"></script>
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29 <script src="../mode/python/python.js"></script>
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30 <script src="../mode/markdown/markdown.js"></script>
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31 <style>
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32 .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
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33 </style>
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34 </head>
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35
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36 <body>
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37 <div id=nav>
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38 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
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39
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40 <ul>
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41 <li><a href="../index.html">Home</a>
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42 <li><a href="../doc/manual.html">Manual</a>
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43 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
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44 </ul>
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45 <ul>
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46 <li><a class=active href="#">Code Folding</a>
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47 </ul>
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48 </div>
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49
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50 <article>
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51 <h2>Code Folding Demo</h2>
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52 <form>
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53 <div style="max-width: 50em; margin-bottom: 1em">JavaScript:<br>
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54 <textarea id="code" name="code"></textarea></div>
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55 <div style="max-width: 50em; margin-bottom: 1em">HTML:<br>
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56 <textarea id="code-html" name="code-html"></textarea></div>
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57 <div style="max-width: 50em; margin-bottom: 1em">JSON with custom widget:<br>
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58 <textarea id="code-json" name="code-json">
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59 {
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60 "menu": {
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61 "id": "file",
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62 "value": "File",
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63 "popup": {
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64 "menuitem": [
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65 {"value": "New", "onclick": "CreateNewDoc()"},
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66 {"value": "Open", "onclick": "OpenDoc()"},
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67 {"value": "Close", "onclick": "CloseDoc()"}
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68 ]
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69 }
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70 }
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71 }
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72 </textarea></div>
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73 <div style="max-width: 50em">Python:<br>
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74 <textarea id="code-python" name="code">
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75 def foo():
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76 do_some_stuff()
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77 here
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78 return None
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79
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80 class Bar:
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81 __init__(self):
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82 if True:
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83 print("True")
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84 else:
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85 print("False")
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86
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87 this_code_makes_no_sense():
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88 pass
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89
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90 # A comment</textarea></div>
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91 <div style="max-width: 50em">Markdown:<br>
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92 <textarea id="code-markdown" name="code"></textarea></div>
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93 </form>
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94 <script id="script">
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95 /*
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96 * Demonstration of code folding
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97 */
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98 window.onload = function() {
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99 var te = document.getElementById("code");
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100 var sc = document.getElementById("script");
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101 te.value = (sc.textContent || sc.innerText || sc.innerHTML).replace(/^\s*/, "");
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102 sc.innerHTML = "";
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103 var te_html = document.getElementById("code-html");
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104 te_html.value = document.documentElement.innerHTML;
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105 var te_python = document.getElementById("code-python");
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106 var te_markdown = document.getElementById("code-markdown");
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107 te_markdown.value = "# Foo\n## Bar\n\nblah blah\n\n## Baz\n\nblah blah\n\n# Quux\n\nblah blah\n"
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108 var te_json = document.getElementById("code-json");
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109
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110 window.editor = CodeMirror.fromTextArea(te, {
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111 mode: "javascript",
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112 lineNumbers: true,
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113 lineWrapping: true,
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114 extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }},
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115 foldGutter: true,
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116 gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"]
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117 });
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118 editor.foldCode(CodeMirror.Pos(13, 0));
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119
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120 window.editor_json = CodeMirror.fromTextArea(te_json, {
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121 mode: {name: "javascript", json: true},
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122 lineNumbers: true,
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123 lineWrapping: true,
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124 extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }},
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125 foldGutter: true,
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126 gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"],
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127 foldOptions: {
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128 widget: (from, to) => {
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129 var count = undefined;
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130
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131 // Get open / close token
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132 var startToken = '{', endToken = '}';
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133 var prevLine = window.editor_json.getLine(from.line);
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134 if (prevLine.lastIndexOf('[') > prevLine.lastIndexOf('{')) {
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135 startToken = '[', endToken = ']';
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136 }
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137
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138 // Get json content
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139 var internal = window.editor_json.getRange(from, to);
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140 var toParse = startToken + internal + endToken;
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141
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142 // Get key count
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143 try {
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144 var parsed = JSON.parse(toParse);
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145 count = Object.keys(parsed).length;
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146 } catch(e) { }
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147
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148 return count ? `\u21A4${count}\u21A6` : '\u2194';
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149 }
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150 }
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151 });
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152 editor_json.foldCode(CodeMirror.Pos(5, 0));
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153
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154 window.editor_html = CodeMirror.fromTextArea(te_html, {
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155 mode: "text/html",
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156 lineNumbers: true,
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157 lineWrapping: true,
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158 extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }},
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159 foldGutter: true,
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160 gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"]
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161 });
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162 editor_html.foldCode(CodeMirror.Pos(0, 0));
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163 editor_html.foldCode(CodeMirror.Pos(34, 0));
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164
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165 window.editor_python = CodeMirror.fromTextArea(te_python, {
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166 mode: "python",
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167 lineNumbers: true,
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168 extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }},
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169 foldGutter: true,
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170 gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"]
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171 });
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172
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173 window.editor_markdown = CodeMirror.fromTextArea(te_markdown, {
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174 mode: "markdown",
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175 lineNumbers: true,
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176 lineWrapping: true,
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177 extraKeys: {"Ctrl-Q": function(cm){ cm.foldCode(cm.getCursor()); }},
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178 foldGutter: true,
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179 gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"]
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180 });
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181 };
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182 </script>
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183 </article>
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184 </body>
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