| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| <style> |
| .test { |
| position: relative; |
| } |
| |
| .foo { |
| font-size: 10px; |
| } |
| |
| .bar { |
| } |
| </style> |
| </head> |
| <body> |
| <script> |
| function setStyleAndForceLayout(changeFunc) |
| { |
| if (window.internals) { |
| internals.updateLayoutIgnorePendingStylesheetsAndRunPostLayoutTasks(); |
| internals.startTrackingStyleRecalcs(); |
| } |
| |
| changeFunc(); |
| |
| var numStyleRecalcs = 0; |
| if (window.internals) { |
| internals.updateLayoutIgnorePendingStylesheetsAndRunPostLayoutTasks(); |
| numStyleRecalcs = internals.styleRecalcCount(); |
| } |
| return numStyleRecalcs; |
| } |
| |
| description("Test to count the number of recalcStyle calls on inline style and class changes.") |
| |
| var testContainer = document.createElement("div"); |
| testContainer.className = 'test'; |
| document.body.appendChild(testContainer); |
| |
| var style = testContainer.style; |
| |
| var numStyleRecalcs = setStyleAndForceLayout(function() { style.height = "10px"; }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.height = "20px"; }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.height = "20px"; }); |
| shouldBe("numStyleRecalcs", "0"); |
| |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.backgroundPosition = "10px 10%"; }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.backgroundPosition = "10px 10%"; }); |
| shouldBe("numStyleRecalcs", "0"); |
| |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.backgroundColor = "red"; }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.backgroundColor = "red"; }); |
| shouldBe("numStyleRecalcs", "0"); |
| |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.transform = "translate(10px, 10px) rotate(10deg)"; }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { style.transform = "translate(10px, 10px) rotate(10deg)"; }); |
| shouldBe("numStyleRecalcs", "0"); |
| |
| numStyleRecalcs = setStyleAndForceLayout(function() { testContainer.classList.add('foo'); }); |
| shouldBe("numStyleRecalcs", "1"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { testContainer.classList.add('foo'); }); |
| shouldBe("numStyleRecalcs", "0"); |
| numStyleRecalcs = setStyleAndForceLayout(function() { testContainer.classList.add('bar'); }); |
| shouldBe("numStyleRecalcs", "0"); |
| |
| document.body.removeChild(testContainer); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
