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101 lines
4 KiB
HTML
101 lines
4 KiB
HTML
<!DOCTYPE HTML>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<title>Check End Position of smooth scrollIntoView</title>
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<div id="container" style="height: 2500px; width: 2500px;">
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<div id="content" style="height: 500px; width: 500px;margin-left: 1000px; margin-right: 1000px; margin-top: 1000px;margin-bottom: 1000px;background-color: red">
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</div>
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<div id="shadow"></div>
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</div>
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<script>
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var content_height = 500;
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var content_width = 500;
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var window_height = document.documentElement.clientHeight;
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var window_width = document.documentElement.clientWidth;
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var content = document.getElementById("content");
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add_completion_callback(() => document.getElementById("container").remove());
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function waitForScrollEnd() {
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var last_changed_frame = 0;
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var last_x = window.scrollX;
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var last_y = window.scrollY;
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return new Promise((resolve, reject) => {
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function tick(frames) {
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// We requestAnimationFrame either for 500 frames or until 20 frames with
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// no change have been observed.
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if (frames >= 500 || frames - last_changed_frame > 20) {
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resolve();
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} else {
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if (window.scrollX != last_x || window.scrollY != last_y) {
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last_changed_frame = frames;
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last_x = window.scrollX;
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last_y = window.scrollY;
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}
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requestAnimationFrame(tick.bind(null, frames + 1));
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}
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}
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tick(0);
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});
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}
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// When testing manually, we need an additional frame at beginning
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// to trigger the effect.
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requestAnimationFrame(() => {
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promise_test(t => {
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window.scrollTo(0, 0);
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var expected_x = content.offsetLeft + content_width - window_width;
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var expected_y = content.offsetTop + content_height - window_height;
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assert_not_equals(window.scrollX, expected_x, "scrollX");
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assert_not_equals(window.scrollY, expected_y, "scrollY");
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content.scrollIntoView({behavior: "smooth", block: "nearest", inline:
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"nearest"});
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return waitForScrollEnd().then(() => {
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assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
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assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
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});
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}, "Smooth scrollIntoView should scroll the element to the 'nearest' position");
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promise_test(t => {
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window.scrollTo(0, 0);
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var expected_x = content.offsetLeft;
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var expected_y = content.offsetTop;
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assert_not_equals(window.scrollX, expected_x, "scrollX");
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assert_not_equals(window.scrollY, expected_y, "scrollY");
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content.scrollIntoView({behavior: "smooth", block: "start", inline:
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"start"});
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return waitForScrollEnd().then(() => {
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assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
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assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
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});
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}, "Smooth scrollIntoView should scroll the element to the 'start' position");
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promise_test(t => {
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window.scrollTo(0, 0);
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var expected_x = content.offsetLeft + (content_width - window_width) / 2;
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var expected_y = content.offsetTop + (content_height - window_height) / 2;
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assert_not_equals(window.scrollX, expected_x, "scrollX");
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assert_not_equals(window.scrollY, expected_y, "scrollY");
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content.scrollIntoView({behavior: "smooth", block: "center", inline:
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"center"});
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return waitForScrollEnd().then(() => {
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assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
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assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
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});
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}, "Smooth scrollIntoView should scroll the element to the 'center' position");
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promise_test(t => {
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window.scrollTo(0, 0);
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var expected_x = content.offsetLeft + content_width - window_width;
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var expected_y = content.offsetTop + content_height - window_height;
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assert_not_equals(window.scrollX, expected_x, "scrollX");
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assert_not_equals(window.scrollY, expected_y, "scrollY");
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content.scrollIntoView({behavior: "smooth", block: "end", inline:
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"end"});
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return waitForScrollEnd().then(() => {
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assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
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assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
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});
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}, "Smooth scrollIntoView should scroll the element to the 'end' position");
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});
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</script>
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