| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Test that the scrolling tree is in z-order.</title> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function doTest() { |
| requestAnimationFrame(() => { |
| document.body.classList.add('changed'); |
| |
| if (window.internals) |
| document.getElementById('scrollingTree').innerText = window.internals.scrollingStateTreeAsText() + "\n"; |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| <style> |
| .fixed { |
| position: fixed; |
| background-color: silver; |
| border: 1px solid black; |
| width: 200px; |
| height: 150px; |
| } |
| |
| #second { |
| left: 100px; |
| top: 100px; |
| } |
| |
| #third { |
| left: 150px; |
| top: 50px; |
| } |
| |
| .changed #first { |
| z-index: 2; |
| } |
| |
| .changed #third { |
| z-index: 1; |
| } |
| </style> |
| </head> |
| <body> |
| <div class="fixed" id="first">First</div> |
| <div class="fixed" id="second">Second</div> |
| <div class="fixed" id="third">Third</div> |
| <pre id="scrollingTree"></pre> |
| </body> |
| </html> |
