| <!DOCTYPE html> |
| <script src="../resources/js-test.js"></script> |
| <script src="helper-functions.js"></script> |
| <div style="width:100%; height:700px;"></div> |
| <div id="root" style="display: inline-block; overflow-y: scroll; height: 200px;"> |
| <div id="target" style="width:100px; height:300px"></div> |
| <iframe id="target-iframe" src="../resources/intersection-observer-subframe.html" style="width: 300px; height: 100px; overflow-y: scroll"></iframe> |
| </div> |
| <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 root = document.getElementById("root"); |
| var targetIframe = document.getElementById("target-iframe"); |
| |
| targetIframe.onload = function() { |
| var target = targetIframe.contentDocument.getElementById("target"); |
| var iframeScroller = targetIframe.contentDocument.scrollingElement; |
| |
| observer_callback = function(changes) { |
| for (var i in changes) |
| entries.push(changes[i]); |
| }; |
| var observer = new IntersectionObserver(observer_callback, {"root": document.getElementById("root")}); |
| observer.observe(target); |
| |
| function step0() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 0); |
| document.scrollingElement.scrollTop = 250; |
| requestAnimationFrame(step1); |
| }); |
| } |
| |
| function step1() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 0); |
| iframeScroller.scrollTop = 200; |
| requestAnimationFrame(step2); |
| }); |
| } |
| |
| function step2() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 0); |
| root.scrollTop = 175; |
| requestAnimationFrame(step3); |
| }); |
| } |
| |
| function step3() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 1); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.left", 18); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.right", 118); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.top", 593); |
| shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 693); |
| shouldBeEqualToNumber("entries[0].intersectionRect.left", 18); |
| shouldBeEqualToNumber("entries[0].intersectionRect.right", 118); |
| shouldBeEqualToNumber("entries[0].intersectionRect.top", 593); |
| shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 658); |
| shouldBeEqualToNumber("entries[0].rootBounds.left", 8); |
| shouldBeEqualToNumber("entries[0].rootBounds.right", 312); |
| shouldBeEqualToNumber("entries[0].rootBounds.top", 458); |
| shouldBeEqualToNumber("entries[0].rootBounds.bottom", 658); |
| shouldEvaluateToSameObject("entries[0].target", target); |
| document.scrollingElement.scrollTop = 100; |
| requestAnimationFrame(step4); |
| }); |
| } |
| |
| function step4() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 1); |
| root.scrollTop = 100; |
| requestAnimationFrame(step5); |
| }); |
| } |
| |
| function step5() { |
| setTimeout(function() { |
| shouldBeEqualToNumber("entries.length", 2); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.left", 18); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.right", 118); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.top", 818); |
| shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 918); |
| 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", 8); |
| shouldBeEqualToNumber("entries[1].rootBounds.right", 312); |
| shouldBeEqualToNumber("entries[1].rootBounds.top", 608); |
| shouldBeEqualToNumber("entries[1].rootBounds.bottom", 808); |
| shouldEvaluateToSameObject("entries[1].target", target); |
| finishTest(); |
| document.scrollingElement.scrollTop = 0; |
| }); |
| } |
| |
| step0(); |
| } |
| </script> |
