| Xiaoming Shi | 73dfa20 | 2020-03-12 11:31:35 -0700 | [diff] [blame^] | 1 | <!DOCTYPE html> |
| 2 | <meta name="viewport" content="width=device-width,initial-scale=1"> |
| 3 | <script src="/resources/testharness.js"></script> |
| 4 | <script src="/resources/testharnessreport.js"></script> |
| 5 | <script src="./resources/intersection-observer-test-utils.js"></script> |
| 6 | |
| 7 | <style> |
| 8 | pre, #log { |
| 9 | position: absolute; |
| 10 | top: 0; |
| 11 | left: 200px; |
| 12 | } |
| 13 | .spacer { |
| 14 | height: calc(100vh + 100px); |
| 15 | } |
| 16 | iframe { |
| 17 | height: 100px; |
| 18 | width: 150px; |
| 19 | } |
| 20 | </style> |
| 21 | |
| 22 | <div class="spacer"></div> |
| 23 | <iframe id="target-iframe" src="resources/iframe-no-root-subframe.html"></iframe> |
| 24 | <div class="spacer"></div> |
| 25 | |
| 26 | <script> |
| 27 | var vw = document.documentElement.clientWidth; |
| 28 | var vh = document.documentElement.clientHeight; |
| 29 | |
| 30 | var iframe = document.getElementById("target-iframe"); |
| 31 | var target; |
| 32 | var entries = []; |
| 33 | |
| 34 | iframe.onload = function() { |
| 35 | runTestCycle(function() { |
| 36 | assert_true(!!iframe, "iframe exists"); |
| 37 | |
| 38 | target = iframe.contentDocument.getElementById("target"); |
| 39 | assert_true(!!target, "Target element exists."); |
| 40 | var observer = new IntersectionObserver(function(changes) { |
| 41 | entries = entries.concat(changes) |
| 42 | }); |
| 43 | observer.observe(target); |
| 44 | entries = entries.concat(observer.takeRecords()); |
| 45 | assert_equals(entries.length, 0, "No initial notifications."); |
| 46 | runTestCycle(step0, "First rAF."); |
| 47 | }, "Observer with the implicit root; target in a same-origin iframe."); |
| 48 | }; |
| 49 | |
| 50 | function step0() { |
| 51 | document.scrollingElement.scrollTop = 200; |
| 52 | runTestCycle(step1, "document.scrollingElement.scrollTop = 200"); |
| 53 | checkLastEntry(entries, 0, [8, 108, 208, 308, 0, 0, 0, 0, 0, vw, 0, vh, false]); |
| 54 | } |
| 55 | |
| 56 | function step1() { |
| 57 | iframe.contentDocument.scrollingElement.scrollTop = 250; |
| 58 | runTestCycle(step2, "iframe.contentDocument.scrollingElement.scrollTop = 250"); |
| 59 | assert_equals(entries.length, 1, "entries.length == 1"); |
| 60 | } |
| 61 | |
| 62 | function step2() { |
| 63 | document.scrollingElement.scrollTop = 100; |
| 64 | runTestCycle(step3, "document.scrollingElement.scrollTop = 100"); |
| 65 | checkLastEntry(entries, 1, [8, 108, -42, 58, 8, 108, 0, 58, 0, vw, 0, vh, true]); |
| 66 | } |
| 67 | |
| 68 | function step3() { |
| 69 | checkLastEntry(entries, 2, [8, 108, -42, 58, 0, 0, 0, 0, 0, vw, 0, vh, false]); |
| 70 | document.scrollingElement.scrollTop = 0; |
| 71 | } |
| 72 | </script> |
