loda-rust/rust_project/loda-rust-web/web/codemirror/demo/widget.html

<!doctype html>

<title>CodeMirror: Inline Widget Demo</title>
<meta charset="utf-8"/>
<link rel=stylesheet href="../doc/docs.css">

<link rel="stylesheet" href="../lib/codemirror.css">
<script src="../lib/codemirror.js"></script>
<script src="../mode/javascript/javascript.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jshint/2.9.5/jshint.min.js"></script>
<style>
      .CodeMirror {border: 1px solid black;}
      .lint-error {font-family: arial; font-size: 70%; background: #ffa; color: #a00; padding: 2px 5px 3px; }
      .lint-error-icon {color: white; background-color: red; font-weight: bold; border-radius: 50%; padding: 0 3px; margin-right: 7px;}
    </style>
<div id=nav>
  <a href="https://codemirror.net"><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/codemirror">Code</a>
  </ul>
  <ul>
    <li><a class=active href="#">Inline Widget</a>
  </ul>
</div>

<article>
<h2>Inline Widget Demo</h2>


    <div id=code></div>
    <script id="script">var widgets = []
function updateHints() {
  editor.operation(function(){
    for (var i = 0; i < widgets.length; ++i)
      editor.removeLineWidget(widgets[i]);
    widgets.length = 0;

    JSHINT(editor.getValue());
    for (var i = 0; i < JSHINT.errors.length; ++i) {
      var err = JSHINT.errors[i];
      if (!err) continue;
      var msg = document.createElement("div");
      var icon = msg.appendChild(document.createElement("span"));
      icon.innerHTML = "!!";
      icon.className = "lint-error-icon";
      msg.appendChild(document.createTextNode(err.reason));
      msg.className = "lint-error";
      widgets.push(editor.addLineWidget(err.line - 1, msg, {coverGutter: false, noHScroll: true}));
    }
  });
  var info = editor.getScrollInfo();
  var after = editor.charCoords({line: editor.getCursor().line + 1, ch: 0}, "local").top;
  if (info.top + info.clientHeight < after)
    editor.scrollTo(null, after - info.clientHeight + 3);
}

window.onload = function() {
  var sc = document.getElementById("script");
  var content = sc.textContent || sc.innerText || sc.innerHTML;

  window.editor = CodeMirror(document.getElementById("code"), {
    lineNumbers: true,
    mode: "javascript",
    value: content
  });

  var waiting;
  editor.on("change", function() {
    clearTimeout(waiting);
    waiting = setTimeout(updateHints, 500);
  });

  setTimeout(updateHints, 100);
};

"long line to create a horizontal scrollbar, in order to test whether the (non-inline) widgets stay in place when scrolling to the right";
</script>
<p>This demo runs <a href="http://jshint.com">JSHint</a> over the code
in the editor (which is the script used on this page), and
inserts <a href="../doc/manual.html#addLineWidget">line widgets</a> to
display the warnings that JSHint comes up with.</p>
  </article>