Quellcode-Bibliothek helper_tap_passive.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/gfx/layers/apz/test/mochitest/helper_tap_passive.html

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width; initial-scale=1.0">
  <title>Ensure APZ doesn't wait for passive listeners
  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <script type="application/javascript">

var touchdownTime;

async function longPressLink() {
  await synthesizeNativeTouch(document.getElementById("b"), 5, 5, SpecialPowers.DOMWindowUtils.TOUCH_CONTACT, function() {
    dump("Finished synthesizing touch-start, waiting for events...\n");
  });
}

var touchstartReceived = false;
function recordEvent(e) {
  if (!touchstartReceived) {
    touchstartReceived = true;
    is(e.type, "touchstart", "Got a touchstart");
    e.preventDefault(); // should be a no-op because it's a passive listener
    return;
  }

  // If APZ decides to wait for the content response on a particular input block,
  // it needs to wait until both the touchstart and touchmove event are handled
  // by the main thread. In this case there is no touchmove at all, so APZ would
  // end up waiting indefinitely and time out the test. The fact that we get this
  // contextmenu event (mouselongtap on Windows) at all means that APZ decided
  // not to wait for the content response, which is the desired behaviour, since
  // the touchstart listener was registered as a passive listener.
  if (getPlatform() == "windows") {
    is(e.type, "mouselongtap", "Got a mouselongtap");
  } else {
    is(e.type, "contextmenu", "Got a contextmenu");
  }
  e.preventDefault();

  setTimeout(async () => {
    // On Windows below TOUCH_REMOVE event triggers opening a context menu, we
    // need to prevent it.
    const contextmenuPromise = promiseOneEvent(window, "contextmenu", event => {
      event.preventDefault();
      return true;
    });
    const touchendPromise = promiseOneEvent(window, "touchend", () => {
      return true;
    });
    await synthesizeNativeTouch(document.getElementById("b"), 5, 5, SpecialPowers.DOMWindowUtils.TOUCH_REMOVE, function() {
      dump("Finished synthesizing touch-end to clear state; finishing test...\n");
    });

    await touchendPromise;
    if (getPlatform() == "windows") {
      await contextmenuPromise;
    }
    subtestDone();
  }, 0);
}

window.addEventListener("touchstart", recordEvent, { passive: true, capture: true });
if (getPlatform() == "windows") {
  SpecialPowers.addChromeEventListener("mouselongtap", recordEvent, true);
} else {
  window.addEventListener("contextmenu", recordEvent, true);
}

waitUntilApzStable()
.then(longPressLink);

  </script>
</head>
<body>
<a id="b" href="#">Link to nowhere</a>
</body>
</html>

Messung V0.5

¤ Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.0.28Bemerkung: (vorverarbeitet) ¤

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Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

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Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

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