<!DOCTYPE HTML>
<html>
<!-- NodeIterator mutation tests, 2.
     Originally part of WebKit, Mochi-ified by Zack Weinberg.
     This file based on node-iterator-00[...].html from
       http://svn.webkit.org/repository/webkit/trunk/LayoutTests/traversal/
  -->
<head>
 <title>DOM Traversal: NodeIterator: Mutations (2/x)</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
</head>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
  function resetContent() {
    var content = $('content');
    content.innerHTML = ('<span id="A"><\/span><span id="B"><\/span>'
			 + '<span id="C"><\/span><span id="D"><\/span>'
			 + '<span id="E"><\/span><span id="F"><\/span>'
			 + '<span id="G"><\/span><span id="H"><\/span>'
			 + '<span id="I"><\/span>');
    return content;
  }

  function makeSpan(id) {
    var e = document.createElement('span');
    e.id = id;
    return e;
  }

  function testNodeFilter(n) {
    if (n.tagName == 'SPAN')
      return NodeFilter.FILTER_ACCEPT;
    return NodeFilter.FILTER_SKIP;
  }

  function checkseq(it, root, expect) {
    var checkIt = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT,
					      testNodeFilter);
    var printedPointer = (it.referenceNode == undefined);
    var string = '';
    var node;
    while ((node = checkIt.nextNode()) != null) {
      if (!printedPointer && it.referenceNode == node) {
        printedPointer = true;
	var s = '[' + node.id + '] ';
          if (it.pointerBeforeReferenceNode)
            string += "* " + s;
          else
            string += s + "* ";
      } else {
        string += node.id + " ";
      }
    }
    is(string.slice(0, -1), expect, "sequence check");
  }

  // first a basic sanity check [node-iterator-001]
  (function(){
     var root = resetContent();
     var it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT,
					  testNodeFilter);

     checkseq(it, root, 'A B C D E F G H I');
     it.nextNode();
     checkseq(it, root, '[A] * B C D E F G H I');
     it.previousNode();
     checkseq(it, root, '* [A] B C D E F G H I');
     it.previousNode();
     checkseq(it, root, '* [A] B C D E F G H I');
  })();

  // Mutations that should not move the iterator [node-iterator-002]
  (function(){
     var root = resetContent();
     var it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT,
					  testNodeFilter);

     for (var i = 0; i < 4; i++)
       it.nextNode();
     checkseq(it, root, 'A B C [D] * E F G H I');

     root.removeChild($('E'));
     checkseq(it, root, 'A B C [D] * F G H I');

     var X = makeSpan('X');
     root.insertBefore(X, $('F'));
     checkseq(it, root, 'A B C [D] * X F G H I');

     var I = $('I');
     root.removeChild(I);
     root.insertBefore(I, X);
     checkseq(it, root, 'A B C [D] * I X F G H');
  })();

  // 002 complete

  /* Template
  (function(){
     var root = resetContent();
     var it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT,
					  testNodeFilter);

  })();
  */
</script>
</pre>
</body>
</html>
