browser_setTouchEmulationEnabled.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

const DOC_TOUCH = toDataURL("<div>Hello world");

add_task(async function invalidEnabledType({ client }) {

  const { Emulation } = client;

  for (const enabled of [null, "", 1, [], {}]) {

    await Assert.rejects(

      Emulation.setTouchEmulationEnabled({ enabled }),

      /enabled: boolean value expected/,

      `Fails with invalid type: ${enabled}`

);

});

add_task(async function enableAndDisable({ client }) {

  const { Emulation, Runtime } = client;

  const url = toDataURL("<p>foo");

  await enableRuntime(client);

  let contextCreated = Runtime.executionContextCreated();

  await loadURL(url);

  let result = await contextCreated;

  await assertTouchEnabled(client, result.context, false);

  await Emulation.setTouchEmulationEnabled({ enabled: true });

  contextCreated = Runtime.executionContextCreated();

  await loadURL(url);

  result = await contextCreated;

  await assertTouchEnabled(client, result.context, true);

  await Emulation.setTouchEmulationEnabled({ enabled: false });

  contextCreated = Runtime.executionContextCreated();

  await loadURL(url);

  result = await contextCreated;

  await assertTouchEnabled(client, result.context, false);

});

add_task(async function receiveTouchEventsWhenEnabled({ client }) {

  const { Emulation, Runtime } = client;

  await enableRuntime(client);

  await Emulation.setTouchEmulationEnabled({ enabled: true });

  const contextCreated = Runtime.executionContextCreated();

  await loadURL(DOC_TOUCH);

  const { context } = await contextCreated;

  await assertTouchEnabled(client, context, true);

  const { result } = await evaluate(client, context.id, () => {

    return new Promise(resolve => {

      window.ontouchstart = () => {

        resolve(true);

};

      window.dispatchEvent(new Event("touchstart"));

      resolve(false);

});

});

  is(result.value, true, "Received touch event");

});

async function assertTouchEnabled(client, context, expectedStatus) {

  const { result } = await evaluate(client, context.id, () => {

    return "ontouchstart" in window;

});

  if (expectedStatus) {

    ok(result.value, "Touch emulation enabled");

  } else {

    ok(!result.value, "Touch emulation disabled");