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1 <!DOCTYPE html> | |
2 <script src="../resources/js-test.js"></script> | |
3 <script src="helper-functions.js"></script> | |
4 <div style="width:100%; height:700px;"></div> | |
5 <div id="root" style="display: inline-block; overflow-y: scroll; height: 200px;"
> | |
6 <div id="target" style="width:100px; height:300px"></div> | |
7 <iframe id="target-iframe" src="../resources/intersection-observer-subframe.ht
ml" style="width: 300px; height: 100px; overflow-y: scroll"></iframe> | |
8 </div> | |
9 <div style="width:100%; height:700px;"></div> | |
10 | |
11 <script> | |
12 description("Simple intersection observer test with no explicit root and target
in an iframe."); | |
13 var entries = []; | |
14 var root = document.getElementById("root"); | |
15 var targetIframe = document.getElementById("target-iframe"); | |
16 | |
17 targetIframe.onload = function() { | |
18 var target = targetIframe.contentDocument.getElementById("target"); | |
19 var iframeScroller = targetIframe.contentDocument.scrollingElement; | |
20 | |
21 observer_callback = function(changes) { | |
22 for (var i in changes) | |
23 entries.push(changes[i]); | |
24 }; | |
25 var observer = new IntersectionObserver(observer_callback, {"root": document.g
etElementById("root")}); | |
26 observer.observe(target); | |
27 | |
28 function step0() { | |
29 setTimeout(function() { | |
30 shouldBeEqualToNumber("entries.length", 0); | |
31 document.scrollingElement.scrollTop = 250; | |
32 requestAnimationFrame(step1); | |
33 }); | |
34 } | |
35 | |
36 function step1() { | |
37 setTimeout(function() { | |
38 shouldBeEqualToNumber("entries.length", 0); | |
39 iframeScroller.scrollTop = 200; | |
40 requestAnimationFrame(step2); | |
41 }); | |
42 } | |
43 | |
44 function step2() { | |
45 setTimeout(function() { | |
46 shouldBeEqualToNumber("entries.length", 0); | |
47 root.scrollTop = 175; | |
48 requestAnimationFrame(step3); | |
49 }); | |
50 } | |
51 | |
52 function step3() { | |
53 setTimeout(function() { | |
54 shouldBeEqualToNumber("entries.length", 1); | |
55 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 18); | |
56 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 118); | |
57 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 593); | |
58 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 693); | |
59 shouldBeEqualToNumber("entries[0].intersectionRect.left", 18); | |
60 shouldBeEqualToNumber("entries[0].intersectionRect.right", 118); | |
61 shouldBeEqualToNumber("entries[0].intersectionRect.top", 593); | |
62 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 658); | |
63 shouldBeEqualToNumber("entries[0].rootBounds.left", 8); | |
64 shouldBeEqualToNumber("entries[0].rootBounds.right", 312); | |
65 shouldBeEqualToNumber("entries[0].rootBounds.top", 458); | |
66 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 658); | |
67 shouldEvaluateToSameObject("entries[0].target", target); | |
68 document.scrollingElement.scrollTop = 100; | |
69 requestAnimationFrame(step4); | |
70 }); | |
71 } | |
72 | |
73 function step4() { | |
74 setTimeout(function() { | |
75 shouldBeEqualToNumber("entries.length", 1); | |
76 root.scrollTop = 100; | |
77 requestAnimationFrame(step5); | |
78 }); | |
79 } | |
80 | |
81 function step5() { | |
82 setTimeout(function() { | |
83 shouldBeEqualToNumber("entries.length", 2); | |
84 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 18); | |
85 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 118); | |
86 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 818); | |
87 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 918); | |
88 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0); | |
89 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0); | |
90 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0); | |
91 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0); | |
92 shouldBeEqualToNumber("entries[1].rootBounds.left", 8); | |
93 shouldBeEqualToNumber("entries[1].rootBounds.right", 312); | |
94 shouldBeEqualToNumber("entries[1].rootBounds.top", 608); | |
95 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 808); | |
96 shouldEvaluateToSameObject("entries[1].target", target); | |
97 finishJSTest(); | |
98 document.scrollingElement.scrollTop = 0; | |
99 }); | |
100 } | |
101 | |
102 step0(); | |
103 } | |
104 </script> | |
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