"use strict";

add_task(function*() {
  yield startCustomizing();
  is(gBrowser.tabs.length, 2, "Should have 2 tabs");

  let paletteKidCount = document.getElementById("customization-palette").childElementCount;
  let nonCustomizingTab = gBrowser.tabContainer.querySelector("tab:not([customizemode=true])");
  let finishedCustomizing = BrowserTestUtils.waitForEvent(gNavToolbox, "aftercustomization");
  yield BrowserTestUtils.switchTab(gBrowser, nonCustomizingTab);
  yield finishedCustomizing;

  let startedCount = 0;
  let handler = e => startedCount++;
  gNavToolbox.addEventListener("customizationstarting", handler);
  yield startCustomizing();
  CustomizableUI.removeWidgetFromArea("home-button");
  yield gCustomizeMode.reset().catch(e => {
    ok(false, "Threw an exception trying to reset after making modifications in customize mode: " + e);
  });

  let newKidCount = document.getElementById("customization-palette").childElementCount;
  is(newKidCount, paletteKidCount, "Should have just as many items in the palette as before.");
  yield endCustomizing();
  is(startedCount, 1, "Should have only started once");
  gNavToolbox.removeEventListener("customizationstarting", handler);
  let customizableToolbars = document.querySelectorAll("toolbar[customizable=true]:not([autohide=true])");
  for (let toolbar of customizableToolbars) {
    ok(!toolbar.hasAttribute("customizing"), "Toolbar " + toolbar.id + " is no longer customizing");
  }
  let menuitem = document.getElementById("PanelUI-customize");
  isnot(menuitem.getAttribute("label"), menuitem.getAttribute("exitLabel"), "Should have exited successfully");
});