| <!DOCTYPE html> |
| <script src="../../resources/js-test.js"></script> |
| <style> |
| /* Make all divs relayout boundaries. */ |
| div { |
| width: 100px; |
| height: 100px; |
| overflow: hidden; |
| position: relative; |
| } |
| </style> |
| <div id="relayout-common-ancestor"><div><div></div></div><div><div></div></div></div> |
| <script> |
| function dirtyLayout() |
| { |
| var container = document.getElementById('relayout-common-ancestor'); |
| for (var i = 0; i < container.childNodes.length; ++i) { |
| var child = container.childNodes[i].firstChild; |
| child.style.width = "99px"; |
| // Force a style recalc that doesn't force a layout so that the |
| // needsLayout count is incremented. |
| getComputedStyle(child).color; |
| } |
| } |
| |
| document.documentElement.offsetTop; |
| |
| // Pass quiet=true here so that the added nodes from the shouldBe don't |
| // mess up the needsLayoutCount on line 45. |
| if (window.internals) |
| shouldBe("internals.needsLayoutCount()", "0", true); |
| |
| dirtyLayout(); |
| |
| // The tree appears as following, with the starred nodes dirty: |
| // div [relayout-common-ancestor] |
| // / \ |
| // *div *div |
| // / / |
| // *div *div |
| if (window.internals) |
| shouldBe("internals.needsLayoutCount()", "4"); |
| |
| document.documentElement.offsetTop; |
| |
| if (window.internals) |
| shouldBe("internals.needsLayoutCount()", "0"); |
| </script> |
