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<!DOCTYPE HTML>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=471319
-->

<head>
  <title>Test for Bug 471319</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>

<body onload="doTest();">
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=471319">Mozilla Bug 471319</a>
  <p id="display"></p>
  <div id="content" style="display: none">
  </div>

  <pre id="test">
    <script type="application/javascript">

      /** Test for Bug 471319 **/

      SimpleTest.waitForExplicitFinish();

      function doTest() {
        let t1 = SpecialPowers.wrap($("t1"));

        // Test 1: Undo on an empty editor - the editor should not forget about
        // the padding <br> element for empty editor.
        let t1Editor = t1.editor;

        // Did the editor recognize the new padding <br> element?
        t1Editor.undo(1);
        ok(!t1.value, "<br> still recognized as padding on undo");


        // Test 2: Redo on an empty editor - the editor should not forget about
        // the padding <br> element for empty editor.
        let t2 = SpecialPowers.wrap($("t2"));
        let t2Editor = t2.editor;

        // Did the editor recognize the new padding <br> element?
        t2Editor.redo(1);
        ok(!t2.value, "<br> still recognized as padding on redo");


        // Test 3: Undoing a batched transaction where both end points of the
        // transaction are the padding <br> element for empty editor - the
        // <br> element should still be recognized as padding.
        t1Editor.transactionManager.beginBatch(null);
        t1.value = "mozilla";
        t1.value = "";
        t1Editor.transactionManager.endBatch(false);
        t1Editor.undo(1);
        ok(!t1.value,
           "recreated <br> from undo transaction recognized as padding");


        // Test 4: Redoing a batched transaction where both end points of the
        // transaction are the padding <br> element for empty editor - the
        // <br> element should still be recognized padding.
        t1Editor.redo(1);
        ok(!t1.value,
           "recreated <br> from redo transaction recognized as padding");
        SimpleTest.finish();
     }
   </script>
  </pre>

  <input type="text" id="t1" />
  <input type="text" id="t2" />
</body>
</html>