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1 <!doctype html>
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2
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3 <title>CodeMirror: Lazy Mode Loading Demo</title>
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4 <meta charset="utf-8"/>
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5 <link rel=stylesheet href="../doc/docs.css">
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6
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7 <link rel="stylesheet" href="../lib/codemirror.css">
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8 <script src="../lib/codemirror.js"></script>
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9 <script src="../addon/mode/loadmode.js"></script>
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10 <script src="../mode/meta.js"></script>
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11 <style>
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12 .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
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13 </style>
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14 <div id=nav>
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15 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
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16
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17 <ul>
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18 <li><a href="../index.html">Home</a>
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19 <li><a href="../doc/manual.html">Manual</a>
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20 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
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21 </ul>
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22 <ul>
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23 <li><a class=active href="#">Lazy Mode Loading</a>
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24 </ul>
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25 </div>
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26
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27 <article>
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28 <h2>Lazy Mode Loading Demo</h2>
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29 <p style="color: gray">Current mode: <span id="modeinfo">text/plain</span></p>
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30 <form><textarea id="code" name="code">This is the editor.
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31 // It starts out in plain text mode,
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32 # use the control below to load and apply a mode
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33 "you'll see the highlighting of" this text /*change*/.
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34 </textarea></form>
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35 <p>Filename, mime, or mode name: <input type=text value=foo.js id=mode> <button type=button onclick="change()">change mode</button></p>
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36
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37 <script>
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38 CodeMirror.modeURL = "../mode/%N/%N.js";
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39 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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40 lineNumbers: true
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41 });
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42 var modeInput = document.getElementById("mode");
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43 CodeMirror.on(modeInput, "keypress", function(e) {
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44 if (e.keyCode == 13) change();
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45 });
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46 function change() {
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47 var val = modeInput.value, m, mode, spec;
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48 if (m = /.+\.([^.]+)$/.exec(val)) {
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49 var info = CodeMirror.findModeByExtension(m[1]);
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50 if (info) {
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51 mode = info.mode;
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52 spec = info.mime;
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53 }
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54 } else if (/\//.test(val)) {
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55 var info = CodeMirror.findModeByMIME(val);
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56 if (info) {
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57 mode = info.mode;
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58 spec = val;
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59 }
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60 } else {
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61 mode = spec = val;
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62 }
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63 if (mode) {
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64 editor.setOption("mode", spec);
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65 CodeMirror.autoLoadMode(editor, mode);
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66 document.getElementById("modeinfo").textContent = spec;
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67 } else {
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68 alert("Could not find a mode corresponding to " + val);
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69 }
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70 }
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71 </script>
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72 </article>
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