browser_standalone_application_chooser_window_fallback.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test the fallback fixed in bug 1875460, if the modern tab dialog box is not

// supported.

const TEST_URL =

  "https://example.com/browser/" +

  "uriloader/exthandler/tests/mochitest/FTPprotocolHandler.html";

add_task(async function () {

  await SpecialPowers.pushPrefEnv({

    set: [["security.external_protocol_requires_permission", false]],

});

  // Load a page with an FTP link.

  let browser = gBrowser.selectedBrowser;

  BrowserTestUtils.startLoadingURIString(browser, TEST_URL);

  await BrowserTestUtils.browserLoaded(browser, false, TEST_URL);

  // Make sure no handler is set, forcing the dialog to show.

  let protoSvc = Cc[

    "@mozilla.org/uriloader/external-protocol-service;1"

  ].getService(Ci.nsIExternalProtocolService);

  let protoInfo = protoSvc.getProtocolHandlerInfo("ftp");

  ok(!protoInfo.preferredApplicationHandler, "no preferred handler is set");

  let handlers = protoInfo.possibleApplicationHandlers;

  is(0, handlers.length, "no handler registered for ftp");

  protoInfo.alwaysAskBeforeHandling = true;

  let handlerSvc = Cc["@mozilla.org/uriloader/handler-service;1"].getService(

    Ci.nsIHandlerService

);

  handlerSvc.store(protoInfo);

  // Delete getTabDialogBox from gBrowser, to test the fallback to the standalone

  // application chooser window.

  let _getTabDialogBox = gBrowser.getTabDialogBox;

  delete gBrowser.getTabDialogBox;

  let appChooserDialogOpenPromise = BrowserTestUtils.domWindowOpened(

    null,

    async win => {

      await BrowserTestUtils.waitForEvent(win, "load");

      Assert.ok(

        win.document.documentURI ==

          "chrome://mozapps/content/handling/appChooser.xhtml",

        "application chooser dialog opened"

);

      return true;

);

  let link = "#link";

  await BrowserTestUtils.synthesizeMouseAtCenter(link, {}, browser);

  let appChooserDialog = await appChooserDialogOpenPromise;

  let appChooserDialogClosePromise =

    BrowserTestUtils.domWindowClosed(appChooserDialog);

  let dialog = appChooserDialog.document.getElementsByTagName("dialog")[0];

  let cancelButton = dialog.getButton("cancel");

  cancelButton.click();

  await appChooserDialogClosePromise;

  // Restore the original getTabDialogBox(), to not affect other tests.

  gBrowser.getTabDialogBox = _getTabDialogBox;

});