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      <!DOCTYPE html>
<html>
<head>
  <title>CSS flexbox tests</title>
  <link rel="stylesheet" type="text/css"
        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript"
          src="../common.js"></script>
  <script type="application/javascript"
          src="../role.js"></script>
  <script type="application/javascript">
    function doTest() {
      // Ensure that flexbox ordering and absolute positioning do not affect
      // the accessibility tree.
      // Note that there is no accessible for a div with display:flex style.
      var accTree = {
        role: ROLE_SECTION,
        children: [
          { // Bug 1277559. Button outside the flexed content
            role: ROLE_PUSHBUTTON,
            name: "Button",
          },
          { // Visually first button in the 3 button row
            role: ROLE_PUSHBUTTON,
            name: "First",
          },
          { // Flushed right third button in the 3 button row
            role: ROLE_PUSHBUTTON,
            name: "Second",
          },
          { // Middle button in the 3 button row
            role: ROLE_PUSHBUTTON,
            name: "Third",
          }, // end bug 1277559
          { // Bug 962558: DOM first, Order 2.
            role: ROLE_PUSHBUTTON,
            name: "two, tab first",
          },
          { // DOM order second, flex order 1
            role: ROLE_PUSHBUTTON,
            name: "one, tab second",
          }, // end bug 962558
        ],
      };
      testAccessibleTree("flex_elements", accTree);
      SimpleTest.finish();
    }
    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTest);
  </script>
</head>
<body>
  <p id="display"></p>
  <div id="content" style="display: none"></div>
  <pre id="test">
  </pre>
  <div id="flex_elements">
    <button type="button">Button</button>
    <div style="position: relative; display: flex; width: 200px;">
      <button type="button" style="order: 1">First</button>
      <button type="button" style="order: 2; position: absolute; right: 0">Second</button>
      <button type="button" style="order: 3">Third</button>
    </div>
    <div style="display: flex">
      <button id="two" style="order: 2">two, tab first</button>
      <button id="one" style="order: 1">one, tab second</button>
    </div>
  </div>
</body>
</html>
 
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