browser_iframe_typecontent_input_focus.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

const URL_ROOT =

  "chrome://mochitests/content/browser/browser/extensions/formautofill/test/browser/focus-leak/";

const XUL_FRAME_URI = URL_ROOT + "doc_iframe_typecontent_input_focus.xhtml";

const INNER_HTML_FRAME_URI =

  URL_ROOT + "doc_iframe_typecontent_input_focus_frame.html";

/**

 * Check that focusing an input in a frame with type=content embedded in a xul

 * document does not leak.

*/

add_task(async function () {

  const doc = gBrowser.ownerDocument;

  const linkedBrowser = gBrowser.selectedTab.linkedBrowser;

  const browserContainer = gBrowser.getBrowserContainer(linkedBrowser);

  info("Load the test page in a frame with type content");

  const frame = doc.createXULElement("iframe");

  frame.setAttribute("type", "content");

  browserContainer.appendChild(frame);

  info("Wait for the xul iframe to be loaded");

  const onXulFrameLoad = BrowserTestUtils.waitForEvent(frame, "load", true);

  frame.setAttribute("src", XUL_FRAME_URI);

  await onXulFrameLoad;

  const panelFrame = frame.contentDocument.querySelector("#html-iframe");

  info("Wait for the html iframe to be loaded");

  const onFrameLoad = BrowserTestUtils.waitForEvent(panelFrame, "load", true);

  panelFrame.setAttribute("src", INNER_HTML_FRAME_URI);

  await onFrameLoad;

  info("Focus an input inside the iframe");

  const focusMeInput = panelFrame.contentDocument.querySelector(".focusme");

  const onFocus = BrowserTestUtils.waitForEvent(focusMeInput, "focus");

  await SimpleTest.promiseFocus(panelFrame);

  focusMeInput.focus();

  await onFocus;

  // This assert is not really meaningful, the main purpose of the test is

  // to check against leaks.

is(

    focusMeInput,

    panelFrame.contentDocument.activeElement,

    "The .focusme input is the active element"

);

  info("Remove the focused input");

  focusMeInput.remove();

});