| <!DOCTYPE html> |
| |
| <html lang="en"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| <title>Test Changing Name of A Keyframes Rule Using CSSOM</title> |
| <style type="text/css" media="screen"> |
| #box { |
| position: relative; |
| left: 0; |
| top: 0; |
| height: 100px; |
| width: 100px; |
| background-color: blue; |
| animation-duration: 0.5s; |
| animation-timing-function: linear; |
| animation-repeat-count: infinite; |
| animation-name: "bar"; |
| } |
| @-webkit-keyframes "foo" { |
| from { left: 100px; } |
| 40% { left: 200px; } |
| 60% { left: 200px; } |
| to { left: 300px; } |
| } |
| </style> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script src="resources/animation-test.js"></script> |
| </head> |
| <body> |
| <div id="box"></div> |
| <script type="text/javascript" charset="utf-8"> |
| |
| function findKeyframesRule(rule) |
| { |
| var ss = document.styleSheets; |
| for (var i = 0; i < ss.length; ++i) { |
| for (var j = 0; j < ss[i].cssRules.length; ++j) { |
| if (ss[i].cssRules[j].type == window.CSSRule.WEBKIT_KEYFRAMES_RULE && ss[i].cssRules[j].name == rule) |
| return ss[i].cssRules[j]; |
| } |
| } |
| |
| return null; |
| } |
| |
| promise_test(async t => { |
| const delay = 100; |
| const box = document.getElementById("box"); |
| const previousAnimationName = "foo"; |
| const newAnimationName = "anim"; |
| |
| const test = new AnimationTest({ |
| target: box, |
| styleExtractor: style => parseFloat(style.left) |
| }); |
| |
| // First, ensure that there is no animation running. |
| assert_true(!test.animation, "There is no animation initially."); |
| |
| // Now, rename "@keyframes foo" to allow an animation to start. |
| findKeyframesRule(previousAnimationName).name = newAnimationName; |
| box.style.animationName = newAnimationName; |
| |
| // There should be a running animation now. |
| assert_true(test.animation instanceof CSSAnimation, "There is an animation after changing the @keyframes rule."); |
| |
| // Record two computed values after the specified delay each and ensure they're not the same, |
| // showing animated values are applied. |
| const initialValue = await test.recordValueAfterRunningFor(delay); |
| const currentValue = await test.recordValueAfterRunningFor(delay); |
| assert_not_equals(initialValue, currentValue, "Values recorded while running aren't the same."); |
| |
| // Now, check the recorded values were correct. |
| test.checkRecordedValues(); |
| }, `Test that dynamically changing the name of a @keyframes rule starts animations using that name.`); |
| </script> |
| </body> |
| </html> |
