LayoutTests/fast/dom/TreeWalker/script-tests/traversal-skip.js

   1 description('Test TreeWalker with skipping');
   2
   3 var walker;
   4 var testElement = document.createElement("div");
   5 testElement.innerHTML='<div id="A1">  <div id="B1">  <div id="C1"></div>  </div>  <div id="B2"></div><div id="B3"></div>  </div>';
   6
   7 var skipB1Filter = {
   8   acceptNode: function(node) {
   9     if (node.id == 'B1')
  10       return NodeFilter.FILTER_SKIP;
  11
  12     return NodeFilter.FILTER_ACCEPT;
  13   }
  14 }
  15
  16 var skipB2Filter = {
  17   acceptNode: function(node) {
  18     if (node.id == 'B2')
  19       return NodeFilter.FILTER_SKIP;
  20
  21     return NodeFilter.FILTER_ACCEPT;
  22   }
  23 }
  24
  25 debug("<br>Testing nextNode")
  26 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB1Filter, false);
  27 shouldBe("walker.nextNode(); walker.currentNode.id", "'A1'");
  28 shouldBe("walker.nextNode(); walker.currentNode.id", "'C1'");
  29 shouldBe("walker.nextNode(); walker.currentNode.id", "'B2'");
  30 shouldBe("walker.nextNode(); walker.currentNode.id", "'B3'");
  31
  32 debug("<br>Testing firstChild")
  33 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB1Filter, false);
  34 shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'");
  35 shouldBe("walker.firstChild(); walker.currentNode.id", "'C1'");
  36
  37 debug("<br>Testing nextSibling")
  38 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB2Filter, false);
  39 shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'");
  40 shouldBe("walker.firstChild(); walker.currentNode.id", "'B1'");
  41 shouldBe("walker.nextSibling(); walker.currentNode.id", "'B3'");
  42
  43 debug("<br>Testing parentNode")
  44 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB1Filter, false);
  45 walker.currentNode = testElement.querySelectorAll('#C1')[0];
  46 shouldBe("walker.parentNode(); walker.currentNode.id", "'A1'");
  47
  48 debug("<br>Testing previousSibling")
  49 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB2Filter, false);
  50 walker.currentNode = testElement.querySelectorAll('#B3')[0];
  51 shouldBe("walker.previousSibling(); walker.currentNode.id", "'B1'");
  52
  53 debug("<br>Testing previousNode")
  54 walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, skipB1Filter, false);
  55 walker.currentNode = testElement.querySelectorAll('#B3')[0];
  56 shouldBe("walker.previousNode(); walker.currentNode.id", "'B2'");
  57 shouldBe("walker.previousNode(); walker.currentNode.id", "'C1'");
  58 shouldBe("walker.previousNode(); walker.currentNode.id", "'A1'");