| <!doctype html> |
|
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| <title>CodeMirror: Tern Demo</title> |
| <meta charset="utf-8"/> |
| <link rel=stylesheet href="../doc/docs.css"> |
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| <link rel="stylesheet" href="../lib/codemirror.css"> |
| <link rel="stylesheet" href="../addon/dialog/dialog.css"> |
| <link rel="stylesheet" href="../addon/hint/show-hint.css"> |
| <link rel="stylesheet" href="../addon/tern/tern.css"> |
| <script src="../lib/codemirror.js"></script> |
| <script src="../mode/javascript/javascript.js"></script> |
| <script src="../addon/dialog/dialog.js"></script> |
| <script src="../addon/hint/show-hint.js"></script> |
| <script src="../addon/tern/tern.js"></script> |
| <script src="https://unpkg.com/acorn/dist/acorn.js"></script> |
| <script src="https://unpkg.com/acorn-loose/dist/acorn-loose.js"></script> |
| <script src="https://unpkg.com/acorn-walk/dist/walk.js"></script> |
| <script src="//ternjs.net/doc/demo/polyfill.js"></script> |
| <script src="https://unpkg.com/tern/lib/signal.js"></script> |
| <script src="https://unpkg.com/tern/lib/tern.js"></script> |
| <script src="https://unpkg.com/tern/lib/def.js"></script> |
| <script src="https://unpkg.com/tern/lib/comment.js"></script> |
| <script src="https://unpkg.com/tern/lib/infer.js"></script> |
| <script src="https://unpkg.com/tern/plugin/doc_comment.js"></script> |
| <style> |
| .CodeMirror {border: 1px solid #ddd;} |
| </style> |
| <div id=nav> |
| <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a> |
|
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| <ul> |
| <li><a href="../index.html">Home</a> |
| <li><a href="../doc/manual.html">Manual</a> |
| <li><a href="https://github.com/codemirror/codemirror">Code</a> |
| </ul> |
| <ul> |
| <li><a class=active href="#">Tern</a> |
| </ul> |
| </div> |
|
|
| <article> |
| <h2>Tern Demo</h2> |
| <form><textarea id="code" name="code">// Use ctrl-space to complete something |
| // Put the cursor in or after an expression, press ctrl-o to |
| // find its type |
|
|
| var foo = ["array", "of", "strings"]; |
| var bar = foo.slice(0, 2).join("").split("a")[0]; |
|
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| // Works for locally defined types too. |
|
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| function CTor() { this.size = 10; } |
| CTor.prototype.hallo = "hallo"; |
|
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| var baz = new CTor; |
| baz. |
|
|
| // You can press ctrl-q when the cursor is on a variable name to |
| // rename it. Try it with CTor... |
|
|
| // When the cursor is in an argument list, the arguments are |
| // shown below the editor. |
|
|
| [1].reduce( ); |
|
|
| // And a little more advanced code... |
|
|
| (function(exports) { |
| exports.randomElt = function(arr) { |
| return arr[Math.floor(arr.length * Math.random())]; |
| }; |
| exports.strList = "foo".split(""); |
| exports.intList = exports.strList.map(function(s) { return s.charCodeAt(0); }); |
| })(window.myMod = {}); |
|
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| var randomStr = myMod.randomElt(myMod.strList); |
| var randomInt = myMod.randomElt(myMod.intList); |
| </textarea></form> |
|
|
| <p>Demonstrates integration of <a href="http://ternjs.net/">Tern</a> |
| and CodeMirror. The following keys are bound:</p> |
|
|
| <dl> |
| <dt>Ctrl-Space</dt><dd>Autocomplete</dd> |
| <dt>Ctrl-O</dt><dd>Find docs for the expression at the cursor</dd> |
| <dt>Ctrl-I</dt><dd>Find type at cursor</dd> |
| <dt>Alt-.</dt><dd>Jump to definition (Alt-, to jump back)</dd> |
| <dt>Ctrl-Q</dt><dd>Rename variable</dd> |
| <dt>Ctrl-.</dt><dd>Select all occurrences of a variable</dd> |
| </dl> |
|
|
| <p>Documentation is sparse for now. See the top of |
| the <a href="../addon/tern/tern.js">script</a> for a rough API |
| overview.</p> |
|
|
| <script> |
| function getURL(url, c) { |
| var xhr = new XMLHttpRequest(); |
| xhr.open("get", url, true); |
| xhr.send(); |
| xhr.onreadystatechange = function() { |
| if (xhr.readyState != 4) return; |
| if (xhr.status < 400) return c(null, xhr.responseText); |
| var e = new Error(xhr.responseText || "No response"); |
| e.status = xhr.status; |
| c(e); |
| }; |
| } |
| |
| var server; |
| getURL("https://unpkg.com/tern/defs/ecmascript.json", function(err, code) { |
| if (err) throw new Error("Request for ecmascript.json: " + err); |
| server = new CodeMirror.TernServer({defs: [JSON.parse(code)]}); |
| editor.setOption("extraKeys", { |
| "Ctrl-Space": function(cm) { server.complete(cm); }, |
| "Ctrl-I": function(cm) { server.showType(cm); }, |
| "Ctrl-O": function(cm) { server.showDocs(cm); }, |
| "Alt-.": function(cm) { server.jumpToDef(cm); }, |
| "Alt-,": function(cm) { server.jumpBack(cm); }, |
| "Ctrl-Q": function(cm) { server.rename(cm); }, |
| "Ctrl-.": function(cm) { server.selectName(cm); } |
| }) |
| editor.on("cursorActivity", function(cm) { server.updateArgHints(cm); }); |
| }); |
| |
| var editor = CodeMirror.fromTextArea(document.getElementById("code"), { |
| lineNumbers: true, |
| mode: "javascript" |
| }); |
| </script> |
|
|
| </article> |
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