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<!doctype html>
<meta name="timeout" content="long">
<title>vertical-scroll test for touch-action</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/permissions-policy/experimental-features/resources/common.js"></script>
<script src="/permissions-policy/experimental-features/resources/vertical-scroll.js"></script>
<style>
html, body {
height: 100%;
width: 100%;
}
iframe {
width: 90%;
height: 90%;
margin: 0;
padding: 0;
}
.spacer {
width: 100%;
height: 100%;
margin: 100%;
}
</style>
<iframe></iframe>
<br/>
<p>Spacers below to make page scrollable</p>
<br/>
<div class="spacer"></div>
<div class="spacer"></div>
<p> EOF </p>
<script>
"use strict";
let url = url_base + "vertical-scroll-touch-action.html";
let iframeElement = document.querySelector("iframe");
// Wait for the helper scripts to load.
promise_test(async() => {
if (window.input_api_ready)
return Promise.resolve();
await new Promise( (r) => {
window.resolve_on_input_api_ready = r;
});
}, "Make sure input injection API is ready.");
// Sanity-check: Verify we can scroll using the test-API (empty <iframe>).
promise_test(async() => {
window.scrollTo(0, 0);
await inject_input("down");
assert_greater_than(window.scrollY, 0, "Page must have scrolled down.");
await inject_input("right");
assert_greater_than(window.scrollX, 0, "Page must have scrolled right.");
}, "Verify that the page normally scrolls.");
// Enable 'vertical-scroll': "touch-action" should be able to block scroll.
promise_test(async() => {
// Make sure <window> can scroll both towards right and bottom.
window.scrollTo(0, 0);
await loadUrlInIframe(iframeElement, url);
// Apply the scroll gesture.
await inject_input("down");
// The scroll should normally bubble and affect this page, but the <iframe>
// is allowed to block it.
assert_equals(window.scrollY,
0,
"Main frame must not scroll vertically");
}, "Vertical scrolling through 'touch-action' can normally be blocked if" +
" 'pan-y' is not present.");
// Disable 'vertical-scroll': "touch-action" should not be able to block
// scroll.
promise_test(async() => {
window.scrollTo(0, 0);
// Disallow vertical scroll and reload the <iframe>.
setFeatureState(iframeElement, "vertical-scroll", "'none'");
await loadUrlInIframe(iframeElement, url);
// Apply the scroll gesture. Main frame should scroll vertically.
await inject_input("down");
assert_greater_than(window.scrollY,
0,
"Main frame must scroll vertically.");
window.scrollTo(0, 0);
await inject_input("right");
assert_equals(
window.scrollX,
0,
"'pan-x' can be blocked even when 'vertical-scroll' is disabled");
}, "Vertical scrolling (and only vertical scrolling) through 'touch-action'" +
" cannot be blocked by a disabled frame.");
</script>
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