| <!DOCTYPE html> |
| <script src="../../../resources/js-test.js"></script> |
| |
| <style> |
| div { width: 100px } |
| .outer .inner { width: 200px } |
| .outer2 { width: 150px } |
| .outer3.nomatch {} |
| </style> |
| |
| <div id="outer"> |
| <div id="mid"> |
| <div id="inner" class="inner"> |
| <div id="innerChild"> |
| </div> |
| </div> |
| <div id="inner2"> |
| </div> |
| </div> |
| </div> |
| <div id="outer2"> |
| <div id="inner3"></div> |
| </div> |
| <div id="outer3"> |
| <div class="nomatch"></div> |
| <div class="outer3"></div> |
| </div> |
| |
| <script> |
| description("Test that adding and removing class names only updates the elements that are affected."); |
| |
| function insertStyleSheet(css) |
| { |
| var styleElement = document.createElement("style"); |
| styleElement.textContent = css; |
| (document.head || document.documentElement).appendChild(styleElement); |
| } |
| |
| var outer = document.getElementById('outer'); |
| var inner = document.getElementById('inner'); |
| var outer2 = document.getElementById('outer2'); |
| var outer3 = document.getElementById('outer3'); |
| |
| // Style recalc should happen on "inner" and "outer", but not "inner2" or "mid". |
| outer.offsetTop; |
| outer.className = 'outer'; |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| shouldBe("getComputedStyle(inner).width", '"200px"'); |
| |
| // Style recalc should happen on "inner", but not "innerChild". |
| inner.offsetTop; |
| inner.className = ''; |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| shouldBe("getComputedStyle(inner).width", '"100px"'); |
| |
| // Style recalc should happen on "outer2", but not "inner3". |
| outer2.offsetTop; |
| outer2.className = 'outer2'; |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| shouldBe("getComputedStyle(outer2).width", '"150px"'); |
| |
| // Style recalc should happen on "outer3", but none of its children. |
| outer3.offsetTop; |
| outer3.className = 'outer3'; |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1"); |
| </script> |
