| <!DOCTYPE html> |
| <head> |
| <script src="../../resources/js-test.js"></script> |
| </head> |
| <div><!-- Extra divs so it's clear when we're doing a full document recalc --> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| </div> |
| <div class="foo">foo</div> |
| <div class="foo">foo</div> |
| <div class="foo">foo</div> |
| <div class="bar">bar</div> |
| <div class="bar">bar</div> |
| <div class="bar">bar</div> |
| <div class="baz">baz</div> |
| <div class="baz">baz</div> |
| <div class="baz">baz</div> |
| <script> |
| function createSheet(selector) |
| { |
| var sheet = document.createElement('style'); |
| sheet.textContent = selector + ' { color: red }'; |
| return sheet; |
| } |
| |
| function addSheet(selector) |
| { |
| var sheet = createSheet(selector); |
| document.head.appendChild(sheet); |
| return sheet; |
| } |
| |
| if (window.internals) { |
| // Add sheet with non-existant classname. |
| document.documentElement.offsetTop; |
| var nonexistantSheet = addSheet('.nonexistant'); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "0"); |
| |
| // Remove sheet with non-existant classname. |
| document.documentElement.offsetTop; |
| nonexistantSheet.remove(); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "0"); |
| |
| // Add sheet that matches one node. |
| document.documentElement.offsetTop; |
| var barSheet = addSheet('.bar'); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "3"); |
| |
| // Remove sheet that matches one node. |
| document.documentElement.offsetTop; |
| barSheet.remove(); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "3"); |
| |
| // Add two sheets that each match one node. |
| document.documentElement.offsetTop; |
| var barSheet = addSheet('.bar'); |
| var bazSheet = addSheet('.baz'); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| |
| // Remove two sheets that each match one node. |
| document.documentElement.offsetTop; |
| barSheet.remove(); |
| bazSheet.remove(); |
| // Recalc 6 elements + documentElement. |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| |
| // Add two sheets that each match one node. Add one to the beginning of the stylesheet list. |
| document.documentElement.offsetTop; |
| var barSheet = addSheet('.bar'); |
| var bazSheet = createSheet('.baz'); |
| document.head.insertBefore(bazSheet, document.head.firstChild); |
| // Recalc 6 elements + documentElement. |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| |
| // Remove two sheets that each match one node. One is from the beginning of the stylesheet list. |
| document.documentElement.offsetTop; |
| barSheet.remove(); |
| bazSheet.remove(); |
| // Recalc 6 elements + documentElement. |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| |
| // Add and remove sheets in the same run. |
| document.documentElement.offsetTop; |
| var fooSheet = addSheet('.foo'); |
| var barSheet = addSheet('.bar'); |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| document.documentElement.offsetTop; |
| var bazSheet = addSheet('.baz'); |
| barSheet.remove(); |
| // Recalc 6 elements + documentElement. |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "6"); |
| } |
| </script> |
