Quelle test_coalesce_mousewheel.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/events/test/test_coalesce_mousewheel.html

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>mousewheel coalescing</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <script src="apz_test_utils.js"></script>
  <script src="apz_test_native_event_utils.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
  <script>
  let wheelEvents = [];
  function mousewheel(aWheelEvent) {
    // Make mousewheel handling slow
    var start = performance.now();
    while (performance.now() < (start + 10));
    wheelEvents.push(aWheelEvent);
  }

  function resolveIfProcessed(resolve, minamount) {
    if (wheelEvents.length >= minamount) {
      SimpleTest.requestFlakyTimeout("Make sure we got all events.");
      setTimeout(function() { resolve(); }, 20);
    } else {
      setTimeout(function() { resolveIfProcessed(resolve, minamount); });
    }
  }

  const kLineDeltaFactor =
    SpecialPowers.getBoolPref("mousewheel.system_scroll_override.enabled", false)
      ? SpecialPowers.getIntPref("mousewheel.system_scroll_override.vertical.factor", 200) / 100
      : 1;

  function checkWheelEvents(aExpectedDeltaMode, aExpectedSumOfDeltaY, aDescription) {
    const lineDeltaFactor =
      aExpectedDeltaMode === WheelEvent.DOM_DELTA_LINE ? kLineDeltaFactor : 1;
    let succeeded = true;
    let deltaY = 0;
    for (const wheelEvent of wheelEvents) {
      succeeded &= wheelEvent.deltaMode === aExpectedDeltaMode;
      is(wheelEvent.deltaMode, aExpectedDeltaMode,
        `When ${aDescription}, the deltaMode of all wheel events should be ${aExpectedDeltaMode}`);
      deltaY += wheelEvent.deltaY;
    }
    succeeded &= deltaY == aExpectedSumOfDeltaY * lineDeltaFactor;
    is(deltaY, aExpectedSumOfDeltaY * lineDeltaFactor,
      `When ${aDescription}, sum of the deltaY of all wheel events should be ${aExpectedSumOfDeltaY * lineDeltaFactor}`);
    return succeeded;
  }

  async function testOneSingleWheelEvent() {
    await new Promise(function(resolve) {
      wheelEvents = [];
      var element = document.getElementById("wheelEventReceiver");
      element.addEventListener("wheel", mousewheel, true);

      synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });

      setTimeout(function() { resolveIfProcessed(resolve, 1); });
    });
    is(wheelEvents.length, 1,
      "Synthesizing a wheel event via the parent process should cause 1 wheel event");
    is(wheelEvents[0]?.deltaMode, WheelEvent.DOM_DELTA_LINE,
      "When Synthesizing a wheel event via the parent process, the deltaMode of a wheel event should be WheelEvent.DOM_DELTA_LINE");
    is(wheelEvents[0]?.deltaY, 3 * kLineDeltaFactor,
      `When Synthesizing a wheel event via the parent process, the deltaY of a wheel event should be ${3 * kLineDeltaFactor}`);
  }

  const kMaxRetry = 10;

  async function testTwoSingleWheelEvents() {
    function tryIt() {
      return new Promise(function(resolve) {
        info("Synthesizing 2 wheel events via the parent process...");
        wheelEvents = [];
        var element = document.getElementById("wheelEventReceiver");
        element.addEventListener("wheel", mousewheel, true);

        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });

        setTimeout(function() { resolveIfProcessed(resolve, 1); });
      });
    }
    for (let i = 0; i < kMaxRetry; i++) {
      await tryIt();
      if (wheelEvents.length == 2) {
        // Even if failed to coalescing, the sum of deltaY values should be same
        // as sum of the synthesized ones.
        if (!checkWheelEvents(WheelEvent.DOM_DELTA_LINE, 6,
                              "synthesizing 2 wheel events via the parent process")) {
          return;
        }
        continue;  // retry
      }
      is(wheelEvents.length, 1,
        "Synthesizing 2 wheel events via the parent process should cause only 1 wheel event");
      checkWheelEvents(WheelEvent.DOM_DELTA_LINE, 6,
                       "synthesizing 2 wheel events via the parent process");
      return;
    }
  }

  async function testManySingleWheelEvents() {
    function tryIt() {
      return new Promise(function(resolve) {
        info("Synthesizing 5 wheel events via the parent process...");
        wheelEvents = [];
        var element = document.getElementById("wheelEventReceiver");
        element.addEventListener("wheel", mousewheel, true);

        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });

        setTimeout(function() { resolveIfProcessed(resolve, 1); });
      });
    }
    for (let i = 0; i < kMaxRetry; i++) {
      await tryIt();
      if (wheelEvents.length > 1 && wheelEvents.length <= 5) {
        // Even if failed to coalescing, the sum of deltaY values should be same
        // as sum of the synthesized ones.
        if (!checkWheelEvents(WheelEvent.DOM_DELTA_LINE, 15,
                              "synthesizing 5 wheel events via the parent process")) {
          return;
        }
        continue;  // retry
      }
      is(wheelEvents.length, 1,
        "Synthesizing 5 wheel events via the parent process should cause only 1 wheel event");
      checkWheelEvents(WheelEvent.DOM_DELTA_LINE, 15,
                       "synthesizing 5 wheel events via the parent process");
      return;
    }
  }

  async function testMixedWheelEvents() {
    function tryIt() {
      return new Promise(function(resolve) {
        info("Synthesizing 2 line wheel events, 1 page wheel event and 1 line wheel event...");
        wheelEvents = [];
        var element = document.getElementById("wheelEventReceiver");
        element.addEventListener("wheel", mousewheel, true);

        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_PAGE });
        synthesizeWheel(element, 10, 10, { deltaY: 3.0, deltaMode: WheelEvent.DOM_DELTA_LINE });

        setTimeout(function() { resolveIfProcessed(resolve, 3); });
      });
    }
    function checkGroupsOfWheelEvents() {
      let succeeded = true;
      let deltaY = [0, 0, 0];
      let index = 0;
      const description = "synthesizing 2 line wheel events, 1 page wheel event and 1 line wheel event";
      for (const wheelEvent of wheelEvents) {
        switch (index) {
          case 0:
            if (wheelEvent.deltaMode === WheelEvent.DOM_DELTA_LINE) {
              is(wheelEvent.deltaMode, WheelEvent.DOM_DELTA_LINE,
                `When ${description}, the deltaMode of the first group should be WheelEvent.DOM_DELTA_LINE`);
              break;
            }
            index++;
            // fallthrough
          case 1:
            if (wheelEvent.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
              is(wheelEvent.deltaMode, WheelEvent.DOM_DELTA_PAGE,
                `When ${description}, the deltaMode of the seconde group should be WheelEvent.DOM_DELTA_PAGE`);
              break;
            }
            index++;
            // fallthrough
          case 2:
            succeeded &= wheelEvent.deltaMode === WheelEvent.DOM_DELTA_LINE;
            is(wheelEvent.deltaMode, WheelEvent.DOM_DELTA_LINE,
              `When ${description}, the deltaMode of the last group should be WheelEvent.DOM_DELTA_LINE`);
            break;
        }
        deltaY[index] += wheelEvent.deltaY;
      }
      succeeded &= deltaY == [6 * kLineDeltaFactor, 3, 3 * kLineDeltaFactor];
      isDeeply(deltaY, [6 * kLineDeltaFactor, 3, 3 * kLineDeltaFactor],
        `When ${description}, sum of the deltaY of the each wheel event group should be same as sum of the synthesized ones`);
      return succeeded;
    }
    for (let i = 0; i < kMaxRetry; i++) {
      await tryIt();
      if (wheelEvents.length != 3 && wheelEvents.length > 1 && wheelEvents.length <= 5) {
        // Even if failed to coalescing, the sum of deltaY values should be same
        // as sum of the synthesized ones and the wheel events shouldn't be
        // reordered.
        if (!checkGroupsOfWheelEvents()) {
          return;
        }
        continue;  // retry
      }
      is(wheelEvents.length, 3,
        "Synthesizing 2 line wheel events, 1 page wheel event and 1 line wheel event via the parent process should cause only 3 wheel events");
      checkGroupsOfWheelEvents();
      return;
    }
  }

  async function runTests() {
    var enabled = SpecialPowers.getDOMWindowUtils(window).asyncPanZoomEnabled;

    // Avoid synthesized mousemove events to be fired at the system cursor.
    await promiseNativeMouseEvent({
      type: "mousemove",
      screenX: 0,
      screenY: 0,
    });

    await SpecialPowers.pushPrefEnv({set: [
      ["test.events.async.enabled", true],
      ["dom.event.wheel-coalesced.testing", true],
    ]});
    await promiseElementReadyForUserInput(document.documentElement);
    await SpecialPowers.pushPrefEnv({clear: [["test.events.async.enabled"]]});

    await testOneSingleWheelEvent();
    await testTwoSingleWheelEvents();
    await testManySingleWheelEvents();
    await testMixedWheelEvents();

    setTimeout(SimpleTest.finish);
    window.close();
  }

  </script>
</head>
<body onload="SimpleTest.waitForFocus(runTests);">
  <div id="wheelEventReceiver" style="width:100px;height:100px;"></div>
</body>
</html>

Messung V0.5

¤ Dauer der Verarbeitung: 0.22 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

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:

Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.