| <!doctype html> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| <style> |
| target { |
| background-color: white; |
| } |
| target:nth-last-child(n+5) { |
| background-color: rgb(1, 2, 3); |
| } |
| </style> |
| </head> |
| <body> |
| <div id="with-renderer"> |
| <target class="element_1"></target> |
| <target class="element_2"></target> |
| <target class="element_3"></target> |
| <target class="element_4"></target> |
| <target class="element_5"></target> |
| </div> |
| <div id="without-renderer" style="display:none;"> |
| <target class="element_1"></target> |
| <target class="element_2"></target> |
| <target class="element_3"></target> |
| <target class="element_4"></target> |
| <target class="element_5"></target> |
| </div> |
| </body> |
| <script> |
| description('Test style update of :nth-last-child() when the tree structure is modified.'); |
| |
| function testColor(classesThatShouldMatch) { |
| var allTargets = document.querySelectorAll("target"); |
| for (var i = 0; i < allTargets.length; ++i) { |
| var expectMath = classesThatShouldMatch.indexOf(allTargets[i].className) != -1; |
| shouldBeEqualToString('getComputedStyle(document.querySelectorAll("target")[' + i + ']).backgroundColor', expectMath ? 'rgb(1, 2, 3)' : 'rgb(255, 255, 255)'); |
| } |
| } |
| |
| function addElementAsFirstChild(tagName, className) |
| { |
| var newElement = document.createElement(tagName); |
| newElement.className = className; |
| |
| var withRenderer = document.getElementById("with-renderer"); |
| withRenderer.insertBefore(newElement, withRenderer.firstChild); |
| |
| var withoutRenderer = document.getElementById("without-renderer"); |
| withoutRenderer.insertBefore(newElement.cloneNode(), withoutRenderer.firstChild); |
| } |
| |
| function removeElementsOfClass(className) |
| { |
| var allElementsToRemove = document.querySelectorAll('.' + className); |
| for (var i = 0; i < allElementsToRemove.length; ++i) |
| allElementsToRemove[i].parentElement.removeChild(allElementsToRemove[i]); |
| } |
| |
| debug("Initialy, only the first can match."); |
| testColor(["element_1"]); |
| |
| debug("Adding an element <target> on top, we should now match 0 and 1."); |
| addElementAsFirstChild("target", "element_0") |
| testColor(["element_0", "element_1"]); |
| |
| // Using nottarget is interesting because the ':nth-last-child()' part is not matched for those elements. |
| debug("Adding an element <nottarget> on top, we should now match -1, 0, 1."); |
| addElementAsFirstChild("nottarget", "element_-1") |
| testColor(["element_-1", "element_0", "element_1"]); |
| |
| debug("Adding an element <nottarget> on top, we should now match -2, -1, 0, 1."); |
| addElementAsFirstChild("nottarget", "element_-2") |
| testColor(["element_-2", "element_-1", "element_0", "element_1"]); |
| |
| debug("Adding an element <target> on top, we should now match -3, -2, -1, 0, 1."); |
| addElementAsFirstChild("target", "element_-3") |
| testColor(["element_-3", "element_-2", "element_-1", "element_0", "element_1"]); |
| |
| debug("Adding an element <nottarget> on top, we should now match -4, -3, -2, -1, 0, 1."); |
| addElementAsFirstChild("nottarget", "element_-4") |
| testColor(["element_-4", "element_-3", "element_-2", "element_-1", "element_0", "element_1"]); |
| |
| debug("Removing one of the <nottarget>, -2 should no longer match."); |
| removeElementsOfClass("element_-2"); |
| testColor(["element_-4", "element_-3", "element_-1", "element_0", "element_1"]); |
| |
| debug("Removing one of the <target>, -4 should no longer match."); |
| removeElementsOfClass("element_-4"); |
| testColor(["element_-3", "element_-1", "element_0", "element_1"]); |
| |
| debug("Removing one of the <notarget>, -1 should no longer match."); |
| removeElementsOfClass("element_-1"); |
| testColor(["element_-3", "element_0", "element_1"]); |
| |
| debug("Removing one of the <target>, -3 should no longer match."); |
| removeElementsOfClass("element_-3"); |
| testColor(["element_0", "element_1"]); |
| |
| debug("Removing one of the <target>, 0 should no longer match."); |
| removeElementsOfClass("element_0"); |
| testColor(["element_1"]); |
| |
| debug("Removing one of the <target>, there are only 4 siblings left, nothing can match."); |
| removeElementsOfClass("element_1"); |
| testColor([]); |
| |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </html> |
