| <!DOCTYPE html> |
| <script src="../resources/js-test.js"></script> |
| <script src="helper-functions.js"></script> |
| <div style="width:100%; height:700px;"></div> |
| <div style="white-space: nowrap;"> |
| <div style="display: inline-block; width: 1000px; height: 100px"></div> |
| <div id="target" style="display: inline-block; background-color: green; width:100px; height:100px"></div> |
| <div style="display: inline-block; width: 1000px; height: 100px"></div> |
| </div> |
| <div style="width:100%; height:700px;"></div> |
| |
| <script> |
| description("Intersection observer test with root margin and implicit root."); |
| var target = document.getElementById("target"); |
| var entries = []; |
| var observer = new IntersectionObserver( |
| changes => { entries = entries.concat(changes) }, |
| { rootMargin: "10px 20% 40% 30px" } |
| ); |
| |
| shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px' })"); |
| shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px' })"); |
| shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px 3%' })"); |
| shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px 3% 40px junk junk junk' })"); |
| |
| onload = function() { |
| observer.observe(target); |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 0); |
| // See README for explanation of double RAF. |
| requestAnimationFrame(() => { requestAnimationFrame(step0) }); |
| } |
| |
| function step0() { |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 0); |
| document.scrollingElement.scrollLeft = 100; |
| requestAnimationFrame(step1); |
| } |
| |
| function step1() { |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 1); |
| if (entries.length > 0) { |
| shouldBeEqualToNumber("entries.length", 1); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.left", 912); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.right", 1012); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.top", 708); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 808); |
| shouldBeEqualToNumber("entries[0].intersectionRect.left", 912); |
| shouldBeEqualToNumber("entries[0].intersectionRect.right", 942); |
| shouldBeEqualToNumber("entries[0].intersectionRect.top", 708); |
| shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 808); |
| shouldBeEqualToNumber("entries[0].rootBounds.left", -30); |
| shouldBeEqualToNumber("entries[0].rootBounds.right", 942); |
| shouldBeEqualToNumber("entries[0].rootBounds.top", -10); |
| shouldBeEqualToNumber("entries[0].rootBounds.bottom", 819); |
| shouldEvaluateToSameObject("entries[0].target", target); |
| } |
| document.scrollingElement.scrollTop = 800; |
| requestAnimationFrame(step2); |
| } |
| |
| function step2() { |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 1); |
| document.scrollingElement.scrollTop = 900; |
| requestAnimationFrame(step3); |
| } |
| |
| function step3() { |
| entries = entries.concat(observer.takeRecords()); |
| shouldBeEqualToNumber("entries.length", 2); |
| if (entries.length > 1) { |
| shouldBeEqualToNumber("entries[1].boundingClientRect.left", 912); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.right", 1012); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.top", -192); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", -92); |
| 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", -30); |
| shouldBeEqualToNumber("entries[1].rootBounds.right", 942); |
| shouldBeEqualToNumber("entries[1].rootBounds.top", -10); |
| shouldBeEqualToNumber("entries[1].rootBounds.bottom", 819); |
| shouldEvaluateToSameObject("entries[1].target", target); |
| } |
| finishJSTest(); |
| document.scrollingElement.scrollLeft = 0; |
| document.scrollingElement.scrollTop = 0; |
| } |
| </script> |
