100 lines
3.3 KiB
HTML
100 lines
3.3 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>preventDefault() in touchmove prevents scrolling even after a long tap event</title>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<script type="application/javascript" src="apz_test_utils.js"></script>
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<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
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<script src="/tests/SimpleTest/paint_listener.js"></script>
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</head>
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<body>
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<!-- An anchor to open a context menu -->
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<a href="about:blank" style="position:absolute; top: 100px; left: 100px;">about:blank</a>
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<!-- make the root scroll container scrollable -->
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<div style="height: 200vh;"></div>
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</body>
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<script type="application/javascript">
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const searchParams = new URLSearchParams(location.search);
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const isAndroid = getPlatform() == "android";
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async function test() {
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// Setup a touchmove event listener where we do preventDefault() to prevent
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// scrolling.
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let touchmoveCount = 0;
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document.scrollingElement.addEventListener("touchmove", e => {
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info("Got a touchmove");
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touchmoveCount++;
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e.preventDefault();
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}, { passive: false });
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// Setup touchstart/touchend event listeners just for debugging purpose.
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document.scrollingElement.addEventListener("touchstart", () => {
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info("Got a touchstart");
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}, { passive: false });
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document.scrollingElement.addEventListener("touchend", () => {
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info("Got a touchend");
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}, { passive: false });
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window.addEventListener("scroll", () => {
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ok(false, "The content should never be scrolled");
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});
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let contextmenuPromise = promiseOneEvent(window, "contextmenu", e => {
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if (searchParams.get("prevent") == "contextmenu") {
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e.preventDefault();
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}
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return true;
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});
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// Ensure that the setup-ed information has reached to APZ.
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await promiseApzFlushedRepaints();
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// Start a touch on the anchor.
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await synthesizeNativeTouch(window, 100, 100, SpecialPowers.DOMWindowUtils.TOUCH_CONTACT);
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// And wait for a contextmenu event (i.e. a long-tap event)
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await contextmenuPromise;
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// Extend apz.content_response_timeout to avoid timeout on waiting the content
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// response.
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await SpecialPowers.pushPrefEnv({ set: [["apz.content_response_timeout", 40000]] });
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// Make sure the touch start does nothing.
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is(window.scrollY, 0, "The original scroll position is zero");
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// Try to scroll down by touch moving.
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for (let i = 1; i < 50; i++) {
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synthesizeNativeTouch(window, 100, 100 - i, SpecialPowers.DOMWindowUtils.TOUCH_CONTACT);
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}
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await synthesizeNativeTouch(window, 100, 50, SpecialPowers.DOMWindowUtils.TOUCH_REMOVE);
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await waitToClearOutAnyPotentialScrolls();
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if (searchParams.get("prevent") == "contextmenu") {
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ok(touchmoveCount > 0, "There should be at least one touch-move event");
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} else {
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is(touchmoveCount, 0, "There should be no touch-move event when the context menu opened");
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}
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is(window.scrollY, 0, "The scroll position should stay the original position");
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if (searchParams.get("prevent") != "contextmenu") {
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// If we've opened the context menu, close it.
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await closeContextMenu();
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}
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}
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if (getPlatform() == "windows") {
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// On Windows every context menu on touch screens opens __after__ lifting the
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// finger.
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ok(true, "Test doesn't need to run on Windows");
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subtestDone();
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} else {
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waitUntilApzStable()
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.then(test)
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.then(subtestDone, subtestFailed);
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}
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</script>
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</html>
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