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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
function getCenterY(acc) {
const y = {};
const h = {};
acc.getBounds({}, y, {}, h);
return y.value + h.value / 2;
}
/**
* Test nsIAccessible::scrollTo.
*/
addAccessibleTask(
`
<div id="scroller" style="height: 100vh; overflow: scroll;">
<hr style="height: 100vh;">
<p id="p1" style="height: 10vh;">a</p>
<hr style="height: 100vh;">
<p id="p2" style="height: 10vh;">b</p>
<hr style="height: 100vh;">
</div>
`,
async function (browser, docAcc) {
const scroller = findAccessibleChildByID(docAcc, "scroller");
const scrollerY = getCenterY(scroller);
// scroller can only show one of p1 or p2, not both.
const p1 = findAccessibleChildByID(docAcc, "p1");
info("scrollTo p1");
let scrolled = waitForEvent(
nsIAccessibleEvent.EVENT_SCROLLING_END,
scroller
);
p1.scrollTo(SCROLL_TYPE_ANYWHERE);
await scrolled;
isWithin(getCenterY(p1), scrollerY, 10, "p1 scrolled to center");
const p2 = findAccessibleChildByID(docAcc, "p2");
info("scrollTo p2");
scrolled = waitForEvent(nsIAccessibleEvent.EVENT_SCROLLING_END, scroller);
p2.scrollTo(SCROLL_TYPE_ANYWHERE);
await scrolled;
isWithin(getCenterY(p2), scrollerY, 10, "p2 scrolled to center");
info("scrollTo p1");
scrolled = waitForEvent(nsIAccessibleEvent.EVENT_SCROLLING_END, scroller);
p1.scrollTo(SCROLL_TYPE_ANYWHERE);
await scrolled;
isWithin(getCenterY(p1), scrollerY, 10, "p1 scrolled to center");
},
{ topLevel: true, iframe: true, remoteIframe: true, chrome: true }
);
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