Quelle test_mouse_events_after_touchend.html Sprache: HTML

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

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Tests for mouse events after touchend</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
<script src="/tests/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<style>
#parent, #child {
  width: 300px;
  height: 64px;
  padding: 16px;
}
#parent {
  background-color: black;
}
#child {
  background-color: gray;
}
</style>
<script>
"use strict";

SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("Required for waiting to prevent double tap at second tap");
SimpleTest.waitForFocus(async () => {
  function stringifyEvent(event) {
    return `{ type: ${event.type}, target: ${
      event.target.id || event.target.nodeName
    }${
      event.detail !== undefined ? `, detail: ${event.detail}` : ""
    }${
      event.button !== undefined ? `, button: ${event.button}` : ""
    }${
      event.buttons !== undefined ? `, buttons: ${event.buttons}` : ""
    } }`;
  }
  function stringifyEvents(arrayOfEvents) {
    if (!arrayOfEvents.length) {
      return "[]";
    }
    let ret = "";
    for (const event of arrayOfEvents) {
      if (ret === "") {
        ret = "[ ";
      } else {
        ret += ", ";
      }
      ret += stringifyEvent(event);
    }
    return ret + " ]";
  }

  let events = [];
  for (const type of ["mousemove",
                      "mousedown",
                      "mouseup",
                      "click",
                      "dblclick",
                      "contextmenu",
                      "touchend"]) {
    if (type == "touchend") {
      addEventListener(type, event => {
        info(`Received: ${stringifyEvent(event)}`);
        events.push({type, target: event.target});
      }, {capture: true});
    } else {
      addEventListener(type, event => {
        info(`Received: ${stringifyEvent(event)}`);
        events.push({
          type: event.type,
          target: event.target,
          detail: event.detail,
          button: event.button,
          buttons: event.buttons,
        });
      }, {capture: true});
    }
  }

  function shiftEventsBefore(arrayOfEvents, aType) {
    const index = arrayOfEvents.findIndex(event => event.type == aType);
    if (index <= 0) {
      return [];
    }
    let ret = [];
    for (let i = 0; i < index; i++) {
      ret.push(arrayOfEvents.shift());
    }
    return ret;
  }

  const parent = document.getElementById("parent");
  const child = document.getElementById("child");

  function promiseEvent(aType) {
    return new Promise(resolve =>
      addEventListener(aType, resolve, {once: true})
    );
  }

  async function promiseFlushingAPZGestureState() {
    await promiseApzFlushedRepaints();
    // Wait for a while to avoid that the next tap will be treated as 2nd tap of
    // a double tap.
    return new Promise(
      resolve => setTimeout(
        resolve,
        // NOTE: x1.0 is not enough to avoid intermittent failures.
        SpecialPowers.getIntPref("apz.max_tap_time") * 1.2
      )
    );
  }

  await waitUntilApzStable();
  for (const prefValue of [true, false]) {
    await SpecialPowers.pushPrefEnv({
      set: [
        ["test.events.async.enabled", prefValue],
        ["ui.click_hold_context_menus.delay", 15000], // disable long tap
      ]
    });
    const desc = `(test.events.async.enabled=${prefValue})`;

    await (async function test_single_tap() {
      await promiseFlushingAPZGestureState();
      info("test_single_tap: testing...");
      events = [];
      const waitForClick = promiseEvent("click");
      synthesizeTouch(child, 5, 5);
      await waitForClick;
      is(
        stringifyEvents(events),
        stringifyEvents([
          { type: "touchend", target: child },
          { type: "mousemove", target: child, detail: 0, button: 0, buttons: 0 },
          { type: "mousedown", target: child, detail: 1, button: 0, buttons: 1 },
          { type: "mouseup", target: child, detail: 1, button: 0, buttons: 0 },
          { type: "click", target: child, detail: 1, button: 0, buttons: 0 },
        ]),
        `Single tap should cause a click ${desc}`
      );
    })();

    await (async function test_single_tap_with_consuming_pointerdown() {
      await promiseFlushingAPZGestureState();
      info("test_single_tap_with_consuming_pointerdown: testing...");
      events = [];
      const waitForTouchEnd = promiseEvent("click");
      child.addEventListener("pointerdown", event => {
        event.preventDefault();
      }, {once: true});
      synthesizeTouch(child, 5, 5);
      await waitForTouchEnd;
      const result = stringifyEvents(events);
      const expected = stringifyEvents([
        { type: "touchend", target: child },
        { type: "click", target: child, detail: 1, button: 0, buttons: 0 },
      ]);
      // If testing on Windows, the result is really unstable. Let's allow to
      // fail for now.
      (navigator.platform.includes("Win") && result != expected ? todo_is : is)(
        result,
        expected,
        `Single tap should not cause mouse events if pointerdown is consumed, but click event should be fired ${desc}`
      );
    })();

    await (async function test_single_tap_with_consuming_touchstart() {
      await promiseFlushingAPZGestureState();
      info("test_single_tap_with_consuming_touchstart: testing...");
      events = [];
      const waitForTouchEnd = promiseEvent("touchend");
      child.addEventListener("touchstart", event => {
        event.preventDefault();
      }, {once: true});
      synthesizeTouch(child, 5, 5);
      await waitForTouchEnd;
      const result = stringifyEvents(events);
      const expected = stringifyEvents([{ type: "touchend", target: child }]);
      // If testing this with APZ, the result is really unstable. Let's allow to
      // fail for now.
      (prefValue && result != expected ? todo_is : is)(
        result,
        expected,
        `Single tap should not cause mouse events if touchstart is consumed ${desc}`
      );
    })();

    await (async function test_single_tap_with_consuming_touchend() {
      await promiseFlushingAPZGestureState();
      info("test_single_tap_with_consuming_touchend: testing...");
      events = [];
      const waitForTouchEnd = promiseEvent("touchend");
      child.addEventListener("touchend", event => {
        event.preventDefault();
      }, {once: true});
      synthesizeTouch(child, 5, 5);
      await waitForTouchEnd;
      is(
        stringifyEvents(shiftEventsBefore(events)),
        stringifyEvents([]),
        `test_single_tap_with_consuming_touchstart() shouldn't cause mouse events after touchend`
      )
      is(
        stringifyEvents(events),
        stringifyEvents([
          { type: "touchend", target: child },
        ]),
        `Single tap should not cause mouse events if touchend is consumed ${desc}`
      );
    })();

    await (async function test_multi_touch() {
      await promiseFlushingAPZGestureState();
      events = [];
      info("test_multi_touch: testing...");
      const waitForTouchEnd = new Promise(resolve => {
        let count = 0;
        function onTouchEnd(event) {
          if (++count == 2) {
            removeEventListener("touchend", onTouchEnd, {capture: true});
            requestAnimationFrame(() => requestAnimationFrame(resolve));
          }
        }
        addEventListener("touchend", onTouchEnd, {capture: true});
      });
      synthesizeTouch(child, [5, 25], 5);
      await waitForTouchEnd;
      is(
        stringifyEvents(shiftEventsBefore(events)),
        stringifyEvents([]),
        `test_single_tap_with_consuming_touchend() shouldn't cause mouse events after touchend`
      )
      is(
        stringifyEvents(events),
        stringifyEvents([
          { type: "touchend", target: child },
          { type: "touchend", target: child },
        ]),
        `Multiple touch should not cause mouse events ${desc}`
      );
    })();

    // FIXME: Add long tap tests which won't frequently fail.
  }
  SimpleTest.finish();
});
</script>
</head>
<body><div id="parent"><div id="child"></div></div></body>
</html>

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