| <!DOCTYPE html> |
| <script src="../resources/js-test.js"></script> |
| <script src="../resources/intersection-observer-helper-functions.js"></script> |
| <div style="width:100%; height:700px;"></div> |
| <iframe id="target-iframe" src="../resources/intersection-observer-subframe.html" style="height: 100px; overflow-y: scroll"></iframe> |
| <div style="width:100%; height:700px;"></div> |
| |
| <script> |
| description("Simple intersection observer test with no explicit root and target in an iframe."); |
| var entries = []; |
| var observer = new IntersectionObserver(changes => { entries = entries.concat(changes) }, {}); |
| var targetIframe = document.getElementById("target-iframe"); |
| var target; |
| var iframeScroller; |
| |
| targetIframe.onload = function() { |
| target = targetIframe.contentDocument.getElementById("target"); |
| iframeScroller = targetIframe.contentDocument.scrollingElement; |
| observer.observe(target); |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 0); |
| waitForNotification(step0); |
| } |
| |
| function step0() { |
| shouldBeEqualToNumber("entries.length", 0); |
| document.scrollingElement.scrollTop = 200; |
| waitForNotification(step1); |
| } |
| |
| function step1() { |
| shouldBeEqualToNumber("entries.length", 0); |
| iframeScroller.scrollTop = 250; |
| waitForNotification(step2); |
| } |
| |
| function step2() { |
| shouldBeEqualToNumber("entries.length", 1); |
| if (entries.length > 0) { |
| shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.right", 108); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.top", -42); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 58); |
| shouldBeEqualToNumber("entries[0].intersectionRect.left", 8); |
| shouldBeEqualToNumber("entries[0].intersectionRect.right", 108); |
| shouldBeEqualToNumber("entries[0].intersectionRect.top", 0); |
| shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 58); |
| shouldBeEqualToNumber("entries[0].rootBounds.left", 0); |
| shouldBeEqualToNumber("entries[0].rootBounds.right", 785); |
| shouldBeEqualToNumber("entries[0].rootBounds.top", 0); |
| shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600); |
| shouldEvaluateToSameObject("entries[0].target", target); |
| } |
| document.scrollingElement.scrollTop = 100; |
| waitForNotification(step3); |
| } |
| |
| function step3() { |
| shouldBeEqualToNumber("entries.length", 2); |
| if (entries.length > 1) { |
| shouldBeEqualToNumber("entries[1].boundingClientRect.left", 8); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.right", 108); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.top", -42); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 58); |
| shouldBeEqualToNumber("entries[1].intersectionRect.left", 0); |
| shouldBeEqualToNumber("entries[1].intersectionRect.right", 0); |
| shouldBeEqualToNumber("entries[1].intersectionRect.top", 0); |
| shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0); |
| shouldBeEqualToNumber("entries[1].rootBounds.left", 0); |
| shouldBeEqualToNumber("entries[1].rootBounds.right", 785); |
| shouldBeEqualToNumber("entries[1].rootBounds.top", 0); |
| shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600); |
| shouldEvaluateToSameObject("entries[1].target", target); |
| } |
| finishJSTest(); |
| document.scrollingElement.scrollTop = 0; |
| } |
| </script> |
