forked from mirrors/gecko-dev
db5de169ad
Both window_bug1369072.html and browser_scroll.js have a pattern something like; 1) Call synthesizeKey to scroll an element 2) Wait a scroll event 3) Test something 4) (Re)set the scroll position to (0, 0) by calling Element.scrollTop and Element.scrollLeft or scrollTo. With the new transmogrification the step 4) will not reset the scroll position if there's an on-going scroll animation in APZ triggered by the synthesizeKey. To avoid the situation where there's an on-going animation at the step 4), we destroy the corresponding scrollable frame and reconstruct it so that it clobbers the animation. Differential Revision: https://phabricator.services.mozilla.com/D130852
88 lines
3.1 KiB
JavaScript
88 lines
3.1 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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/**
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* This test is checking that keyboard scrolling of content in RDM
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* behaves correctly, both with and without touch simulation enabled.
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*/
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const PAINT_LISTENER_JS_URL =
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URL_ROOT + "../../../../../../tests/SimpleTest/paint_listener.js";
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const APZ_TEST_UTILS_JS_URL =
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URL_ROOT + "../../../../../gfx/layers/apz/test/mochitest/apz_test_utils.js";
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const TEST_URL =
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"data:text/html;charset=utf-8," +
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'<head><meta name="viewport" content="width=100, height=100"/>' +
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'<script src="' +
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PAINT_LISTENER_JS_URL +
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'"></script>' +
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'<script src="' +
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APZ_TEST_UTILS_JS_URL +
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'"></script>' +
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"</head>" +
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'<div style="background:blue; width:200px; height:200px"></div>';
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addRDMTask(TEST_URL, async function({ ui, manager }) {
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await setViewportSize(ui, manager, 50, 50);
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const browser = ui.getViewportBrowser();
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for (const mv in [true, false]) {
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await ui.updateTouchSimulation(mv);
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info("Setting focus on the browser.");
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browser.focus();
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await SpecialPowers.spawn(browser, [], async () => {
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// First of all, cancel any async scroll animation if there is. If there's
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// an on-going async scroll animation triggered by synthesizeKey, below
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// scrollTo call scrolls to a position nearby (0, 0) so that this test
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// won't work as expected.
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await content.wrappedJSObject.cancelScrollAnimation(
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content.document.scrollingElement,
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content
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);
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content.scrollTo(0, 0);
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});
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info("Testing scroll behavior with touch simulation " + mv + ".");
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await testScrollingOfContent(ui);
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}
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});
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async function testScrollingOfContent(ui) {
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let scroll;
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info("Checking initial scroll conditions.");
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const viewportScroll = await getViewportScroll(ui);
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is(viewportScroll.x, 0, "Content should load with scrollX 0.");
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is(viewportScroll.y, 0, "Content should load with scrollY 0.");
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/**
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* Here we're going to send off some arrow key events to trigger scrolling.
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* What we would like to be able to do is to await the scroll event and then
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* check the scroll position to confirm the amount of scrolling that has
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* happened. Unfortunately, APZ makes the scrolling happen asynchronously on
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* the compositor thread, and it's very difficult to await the end state of
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* the APZ animation -- see the tests in /gfx/layers/apz/test/mochitest for
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* an example. For our purposes, it's sufficient to test that the scroll
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* event is fired at all, and not worry about the amount of scrolling that
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* has occurred at the time of the event. If the key events don't trigger
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* scrolling, then no event will be fired and the test will time out.
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*/
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scroll = waitForViewportScroll(ui);
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info("Synthesizing an arrow key down.");
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EventUtils.synthesizeKey("KEY_ArrowDown");
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await scroll;
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info("Scroll event was fired after arrow key down.");
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scroll = waitForViewportScroll(ui);
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info("Synthesizing an arrow key right.");
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EventUtils.synthesizeKey("KEY_ArrowRight");
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await scroll;
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info("Scroll event was fired after arrow key right.");
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}
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