| <!DOCTYPE html> |
| <script src="../../../resources/js-test.js"></script> |
| <style> |
| input { background-color: transparent } |
| #inputOptional:optional, |
| #inputRequired:required { |
| background-color: green |
| } |
| |
| input + div { |
| color: pink |
| } |
| </style> |
| <input id="inputOptional" required></input> |
| <div> |
| <div></div> |
| <div></div> |
| </div> |
| <input id="inputRequired"></input> |
| <div> |
| <div></div> |
| <div></div> |
| </div> |
| <script> |
| description("Use descendant invalidation sets for :required and :optional pseudo classes.") |
| |
| var transparent = "rgba(0, 0, 0, 0)"; |
| var green = "rgb(0, 128, 0)"; |
| |
| shouldBe("getComputedStyle(inputOptional, '').backgroundColor", "transparent"); |
| document.body.offsetTop; // Force recalc. |
| inputOptional.removeAttribute("required"); |
| if (window.internals) |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| shouldBe("getComputedStyle(inputOptional, '').backgroundColor", "green"); |
| |
| shouldBe("getComputedStyle(inputRequired, '').backgroundColor", "transparent"); |
| document.body.offsetTop; // Force recalc. |
| inputRequired.setAttribute("required", ""); |
| if (window.internals) |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| shouldBe("getComputedStyle(inputRequired, '').backgroundColor", "green"); |
| |
| </script> |
