| <!DOCTYPE html> |
| <!-- |
| | Test case which ensures that when a pseudo-element can handle CSS |
| | transitions being applied to it properly. |
| --> |
| <html> |
| <head> |
| <style> |
| #block { |
| width: 100px; |
| height: 100px; |
| background-color: yellow; |
| font-size: 30px; |
| } |
| #block::after { |
| content: ""; |
| display:block; |
| transform: translateX(100px); |
| width: 100px; |
| height: 100px; |
| background-color: #0f0; |
| transition: background-color 1s linear; |
| } |
| |
| </style> |
| </head> |
| <body> |
| <div id="block"></div> |
| |
| <script> |
| if (window.testRunner) { |
| window.testRunner.waitUntilDone(); |
| } |
| |
| var blockDiv = document.getElementById('block'); |
| |
| window.addEventListener('load', function() { |
| if (window.testRunner) { |
| // Do a layout upon the load event so that we setup our source styles |
| // that we will be transitioning from. |
| window.testRunner.DoNonMeasuredLayout(); |
| } |
| |
| // Modify the rule that targets the pseudo-element, to trigger the |
| // transition. |
| var sheet = document.styleSheets[0]; |
| var rules = sheet.cssRules; |
| rules[1].style.backgroundColor = '#00f'; |
| |
| if (window.testRunner) { |
| // Run the transition a bit so that it is started but not completed. |
| window.testRunner.DoNonMeasuredLayout(); |
| window.testRunner.AdvanceClockByMs(500); |
| |
| // Measure that the transition should now appear half-way finished. |
| window.testRunner.notifyDone(); |
| } |
| }); |
| </script> |
| |
| </body> |
| </html> |
