| Ali Juma | 69f77c2 | 2018-07-17 21:31:43 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <script src="/resources/testharness.js"></script> |
| 3 | <script src="/resources/testharnessreport.js"></script> |
| 4 | <script src="./resources/intersection-observer-test-utils.js"></script> |
| 5 | |
| 6 | <style> |
| 7 | pre, #log { |
| 8 | position: absolute; |
| 9 | top: 0; |
| 10 | left: 200px; |
| 11 | } |
| 12 | .spacer { |
| 13 | height: calc(100vh + 100px); |
| 14 | } |
| 15 | </style> |
| 16 | |
| 17 | <div class="spacer"></div> |
| 18 | <br id="target"> |
| 19 | <div class="spacer"></div> |
| 20 | |
| 21 | <script> |
| 22 | var vw = document.documentElement.clientWidth; |
| 23 | var vh = document.documentElement.clientHeight; |
| 24 | |
| 25 | var entries = []; |
| 26 | var target; |
| 27 | var tw, th; |
| 28 | |
| 29 | runTestCycle(function() { |
| 30 | target = document.getElementById("target"); |
| 31 | let target_rect = target.getBoundingClientRect(); |
| 32 | tw = target_rect.width; |
| 33 | th = target_rect.height; |
| 34 | assert_true(!!target, "target exists"); |
| 35 | var observer = new IntersectionObserver(function(changes) { |
| 36 | entries = entries.concat(changes) |
| 37 | }); |
| 38 | observer.observe(target); |
| 39 | entries = entries.concat(observer.takeRecords()); |
| 40 | assert_equals(entries.length, 0, "No initial notifications."); |
| 41 | runTestCycle(step0, "First rAF."); |
| 42 | }, "IntersectionObserver observing a br element."); |
| 43 | |
| 44 | function step0() { |
| 45 | document.scrollingElement.scrollTop = 300; |
| 46 | runTestCycle(step1, "document.scrollingElement.scrollTop = 300"); |
| 47 | // The numbers in brackets are target client rect; intersection rect; |
| 48 | // and root bounds. |
| 49 | checkLastEntry(entries, 0, [8, 8 + tw, vh + 108, vh + 108 + th, 0, 0, 0, 0, 0, vw, 0, vh, false]); |
| 50 | } |
| 51 | |
| 52 | function step1() { |
| 53 | document.scrollingElement.scrollTop = 100; |
| 54 | runTestCycle(step2, "document.scrollingElement.scrollTop = 100"); |
| 55 | checkLastEntry(entries, 1, [8, 8 + tw, vh - 192, vh - 192 + th, 8, 8 + tw, vh - 192, vh - 192 + th, 0, vw, 0, vh, true]); |
| 56 | } |
| 57 | |
| 58 | function step2() { |
| 59 | document.scrollingElement.scrollTop = 0; |
| 60 | checkLastEntry(entries, 2, [8, 8 + tw, vh + 8, vh + 8 + th, 0, 0, 0, 0, 0, vw, 0, vh, false]); |
| 61 | } |
| 62 | </script> |
