/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

var originalWindowWidth;

// Drag to overflow chevron should open the overflow panel.
add_task(async function () {
  // Load a page so the identity box can be dragged.
  BrowserTestUtils.loadURIString(gBrowser, "http://mochi.test:8888/");
  await BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);

  originalWindowWidth = window.outerWidth;
  let navbar = document.getElementById(CustomizableUI.AREA_NAVBAR);
  ok(
    !navbar.hasAttribute("overflowing"),
    "Should start with a non-overflowing toolbar."
  );
  ok(CustomizableUI.inDefaultState, "Should start in default state.");
  window.resizeTo(kForceOverflowWidthPx, window.outerHeight);
  await TestUtils.waitForCondition(() => navbar.hasAttribute("overflowing"));
  ok(navbar.hasAttribute("overflowing"), "Should have an overflowing toolbar.");

  let widgetOverflowPanel = document.getElementById("widget-overflow");
  let panelShownPromise = promisePanelElementShown(window, widgetOverflowPanel);
  let identityBox = document.getElementById("identity-icon-box");
  let overflowChevron = document.getElementById("nav-bar-overflow-button");

  // Listen for hiding immediately so we don't miss the event because of the
  // async-ness of the 'shown' yield...
  let panelHiddenPromise = promisePanelElementHidden(
    window,
    widgetOverflowPanel
  );

  var ds = Cc["@mozilla.org/widget/dragservice;1"].getService(
    Ci.nsIDragService
  );

  ds.startDragSessionForTests(
    Ci.nsIDragService.DRAGDROP_ACTION_MOVE |
      Ci.nsIDragService.DRAGDROP_ACTION_COPY |
      Ci.nsIDragService.DRAGDROP_ACTION_LINK
  );
  try {
    var [result, dataTransfer] = EventUtils.synthesizeDragOver(
      identityBox,
      overflowChevron
    );

    // Wait for showing panel before ending drag session.
    await panelShownPromise;

    EventUtils.synthesizeDropAfterDragOver(
      result,
      dataTransfer,
      overflowChevron
    );
  } finally {
    ds.endDragSession(true);
  }

  info("Overflow panel is shown.");

  widgetOverflowPanel.hidePopup();
  await panelHiddenPromise;
});

add_task(async function () {
  window.resizeTo(originalWindowWidth, window.outerHeight);
  let navbar = document.getElementById(CustomizableUI.AREA_NAVBAR);
  await TestUtils.waitForCondition(() => !navbar.hasAttribute("overflowing"));
  ok(
    !navbar.hasAttribute("overflowing"),
    "Should not have an overflowing toolbar."
  );
});