/*
# 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';

import {
  log as internalLogger,
  configs,
  sanitizeAccesskeyMark,
} from '/common/common.js';
import * as ApiTabs from '/common/api-tabs.js';
import * as Constants from '/common/constants.js';
import * as Permissions from '/common/permissions.js';

function log(...args) {
  internalLogger('background/browser-action-menu', ...args);
}

const delimiter = browser.i18n.getMessage('config_terms_delimiter');

function indent(level = 1) {
  let result = '';
  for (let i = 0, maxi = level; i < maxi; i++) {
    result += '\u00A0\u00A0\u00A0';
  }
  return result;
}

const mItems = [
  {
    title:    browser.i18n.getMessage('config_appearance_caption'),
    children: [
      {
        title:    browser.i18n.getMessage('config_sidebarPosition_caption'),
        children: [
          {
            title: browser.i18n.getMessage('config_sidebarPosition_left'),
            key:   'sidebarPosition',
            value: Constants.kTABBAR_POSITION_LEFT,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_sidebarPosition_right'),
            key:   'sidebarPosition',
            value: Constants.kTABBAR_POSITION_RIGHT,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_sidebarPosition_auto'),
            key:   'sidebarPosition',
            value: Constants.kTABBAR_POSITION_AUTO,
            type:  'radio'
          },
        ]
      },
      {
        title:    browser.i18n.getMessage('config_style_caption'),
        children: [
          {
            title: browser.i18n.getMessage('config_style_proton'),
            key:   'style',
            value: 'proton',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_style_photon'),
            key:   'style',
            value: 'photon',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_style_sidebar'),
            key:   'style',
            value: 'sidebar',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_style_highcontrast'),
            key:   'style',
            value: 'highcontrast',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_style_none'),
            key:   'style',
            value: 'none',
            type:  'radio'
          }
        ]
      },
      {
        title: browser.i18n.getMessage('config_animation_label'),
        key:   'animation',
        type:  'checkbox'
      },
      {
        title:  indent() + browser.i18n.getMessage('config_animationForce_label'),
        key:    'animationForce',
        type:   'checkbox',
        expert: true
      },
      {
        title:    browser.i18n.getMessage('config_labelOverflowStyle_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_labelOverflowStyle_fade'),
            key:   'labelOverflowStyle',
            value: 'fade',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_labelOverflowStyle_crop'),
            key:   'labelOverflowStyle',
            value: 'crop',
            type:  'radio'
          }
        ],
      },
      {
        title: browser.i18n.getMessage('config_faviconizePinnedTabs_label'),
        key:   'faviconizePinnedTabs',
        type:  'checkbox',
        expert: true
      },
      {
        title: browser.i18n.getMessage('config_tabPreviewTooltip_label'),
        key:   'tabPreviewTooltip',
        type:  'checkbox',
        permissions: Permissions.ALL_URLS,
        get canRevoke() {
          return !configs.tabPreviewTooltip && !configs.skipCollapsedTabsForTabSwitchingShortcuts;
        },
      },
      {
        title: indent() + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_before') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_anywhere') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_after'),
        key:   'tabPreviewTooltipRenderIn',
        value: Constants.kIN_CONTENT_PANEL_RENDER_IN_ANYWHERE,
        type:  'radio',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_before') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_content') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_after'),
        key:   'tabPreviewTooltipRenderIn',
        value: Constants.kIN_CONTENT_PANEL_RENDER_IN_CONTENT,
        type:  'radio',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_before') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_sidebar') + browser.i18n.getMessage('config_tabPreviewTooltipRenderIn_label_after'),
        key:   'tabPreviewTooltipRenderIn',
        value: Constants.kIN_CONTENT_PANEL_RENDER_IN_SIDEBAR,
        type:  'radio',
        expert: true
      },
      {
        title: browser.i18n.getMessage('config_showCollapsedDescendantsByTooltip_label'),
        key:   'showCollapsedDescendantsByTooltip',
        type:  'checkbox',
        expert: true
      },
      {
        dynamicTitle: true,
        get title() {
          return browser.i18n.getMessage('config_shiftTabsForScrollbarDistance_label_before') + configs.shiftTabsForScrollbarDistance + browser.i18n.getMessage('config_shiftTabsForScrollbarDistance_label_after')
        },
        enabled: false,
        expert:  true
      },
      {
        title: indent() + browser.i18n.getMessage('config_shiftTabsForScrollbarOnlyOnHover_label'),
        key:   'shiftTabsForScrollbarOnlyOnHover',
        type:  'checkbox',
        expert: true
      },
      {
        title:   browser.i18n.getMessage('config_suppressGapFromShownOrHiddenToolbar_caption'),
        enabled: false,
        expert:  true
      },
      {
        title: indent() + browser.i18n.getMessage('config_suppressGapFromShownOrHiddenToolbarOnFullScreen_label'),
        key:   'suppressGapFromShownOrHiddenToolbarOnFullScreen',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_suppressGapFromShownOrHiddenToolbarOnNewTab_label'),
        key:   'suppressGapFromShownOrHiddenToolbarOnNewTab',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_suppressGapFromShownOrHiddenToolbarOnlyOnMouseOperation_label'),
        key:   'suppressGapFromShownOrHiddenToolbarOnlyOnMouseOperation',
        type:  'checkbox',
        expert: true
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_showDialogInSidebar_label'),
        key:   'showDialogInSidebar',
        type:  'checkbox',
        expert: true,
      },
      {
        title: browser.i18n.getMessage('config_renderHiddenTabs_label'),
        key:   'renderHiddenTabs',
        type:  'checkbox',
        expert: true,
      },
    ]
  },
  {
    title:    browser.i18n.getMessage('config_context_caption'),
    children: [
      {
        title: browser.i18n.getMessage('config_extraItems_tabs_topLevel'),
        enabled: false,
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleSticky_command'),
        key:   'context_topLevel_toggleSticky',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_reloadTree_command'),
        key:   'context_topLevel_reloadTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_reloadDescendants_command'),
        key:   'context_topLevel_reloadDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_unblockAutoplayTree_command'),
        key:   'context_topLevel_unblockAutoplayTree',
        type:  'checkbox',
        get visible() {
          return configs.exposeUnblockAutoplayFeatures;
        },
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_unblockAutoplayDescendants_command'),
        key:   'context_topLevel_unblockAutoplayDescendants',
        type:  'checkbox',
        get visible() {
          return configs.exposeUnblockAutoplayFeatures;
        },
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleMuteTree_command'),
        key:   'context_topLevel_toggleMuteTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleMuteDescendants_command'),
        key:   'context_topLevel_toggleMuteDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeTree_command'),
        key:   'context_topLevel_closeTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeDescendants_command'),
        key:   'context_topLevel_closeDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeOthers_command'),
        key:   'context_topLevel_closeOthers',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseTree_command'),
        key:   'context_topLevel_collapseTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseTreeRecursively_command'),
        key:   'context_topLevel_collapseTreeRecursively',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseAll_command'),
        key:   'context_topLevel_collapseAll',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandTree_command'),
        key:   'context_topLevel_expandTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandTreeRecursively_command'),
        key:   'context_topLevel_expandTreeRecursively',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandAll_command'),
        key:   'context_topLevel_expandAll',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_bookmarkTree_command'),
        key:   'context_topLevel_bookmarkTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_sendTreeToDevice_command'),
        key:   'context_topLevel_sendTreeToDevice',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true, },
      {
        title:       browser.i18n.getMessage('config_requestPermissions_bookmarks'),
        type:        'checkbox',
        permissions: Permissions.BOOKMARKS
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_extraItems_tabs_subMenu'),
        enabled: false,
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleSticky_command'),
        key:   'context_toggleSticky',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_reloadTree_command'),
        key:   'context_reloadTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_reloadDescendants_command'),
        key:   'context_reloadDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_unblockAutoplayTree_command'),
        key:   'context_unblockAutoplayTree',
        type:  'checkbox',
        get visible() {
          return configs.exposeUnblockAutoplayFeatures;
        },
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_unblockAutoplayDescendants_command'),
        key:   'context_unblockAutoplayDescendants',
        type:  'checkbox',
        get visible() {
          return configs.exposeUnblockAutoplayFeatures;
        },
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleMuteTree_command'),
        key:   'context_toggleMuteTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_toggleMuteDescendants_command'),
        key:   'context_toggleMuteDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeTree_command'),
        key:   'context_closeTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeDescendants_command'),
        key:   'context_closeDescendants',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_closeOthers_command'),
        key:   'context_closeOthers',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseTree_command'),
        key:   'context_collapseTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseTreeRecursively_command'),
        key:   'context_collapseTreeRecursively',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_collapseAll_command'),
        key:   'context_collapseAll',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandTree_command'),
        key:   'context_expandTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandTreeRecursively_command'),
        key:   'context_expandTreeRecursively',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_expandAll_command'),
        key:   'context_expandAll',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_bookmarkTree_command'),
        key:   'context_bookmarkTree',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('context_sendTreeToDevice_command'),
        key:   'context_sendTreeToDevice',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_showTreeCommandsInTabsContextMenuGlobally_label'),
        key:   'showTreeCommandsInTabsContextMenuGlobally',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_extraItems_bookmarks_caption'),
        enabled: false,
        expert: true,
      },
      {
        title: indent() + sanitizeAccesskeyMark(browser.i18n.getMessage('context_openAllBookmarksWithStructure_label')),
        key:   'context_openAllBookmarksWithStructure',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + sanitizeAccesskeyMark(browser.i18n.getMessage('context_openAllBookmarksWithStructureRecursively_label')),
        key:   'context_openAllBookmarksWithStructureRecursively',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true, },
      {
        title: indent() + browser.i18n.getMessage('config_openAllBookmarksWithStructureDiscarded_label'),
        key:   'openAllBookmarksWithStructureDiscarded',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_suppressGroupTabForStructuredTabsFromBookmarks_label'),
        key:   'suppressGroupTabForStructuredTabsFromBookmarks',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true },
      {
        title: indent() + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_before'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_nextSiblingWithInheritedContainer') + delimiter + browser.i18n.getMessage('config_autoAttachOnContextNewTabCommand_after') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'autoAttachOnContextNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING_WITH_INHERITED_CONTAINER,
            type:  'radio'
          }
        ]
      },
    ]
  },
  {
    title:    browser.i18n.getMessage('config_newTabWithOwner_caption'),
    children: [
      {
        title:   browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_before'),
        children: [
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after'),
            key:   'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_DO_NOTHING,
            type:   'radio',
          },
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:   'radio',
          },
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:   'radio',
          },
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:   'radio',
          },
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_childNextToLastRelatedTab') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_CHILD_NEXT_TO_LAST_RELATED_TAB,
            type:   'radio',
          },
          {
            title:  browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:   'radio',
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedWithOwner_after'),
            key:    'autoAttachOnOpenedWithOwner',
            value:  Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:   'radio',
          },
        ],
      },
      {
        title:    browser.i18n.getMessage('config_insertNewTabFromFirefoxViewAt_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_insertNewTabFromFirefoxViewAt_noControl'),
            key:   'insertNewTabFromFirefoxViewAt',
            value: Constants.kINSERT_NO_CONTROL,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromFirefoxViewAt_nextToLastRelatedTab') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'insertNewTabFromFirefoxViewAt',
            value: Constants.kINSERT_NEXT_TO_LAST_RELATED_TAB,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromFirefoxViewAt_top'),
            key:   'insertNewTabFromFirefoxViewAt',
            value: Constants.kINSERT_TOP,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromFirefoxViewAt_end'),
            key:   'insertNewTabFromFirefoxViewAt',
            value: Constants.kINSERT_END,
            type:  'radio',
          },
        ],
      },
      //{ type: 'separator' },
      {
        title: browser.i18n.getMessage('config_autoGroupNewTabsFromFirefoxView_label'),
        key:   'autoGroupNewTabsFromFirefoxView',
        type:  'checkbox',
        expert: true,
      },
      {
        title: browser.i18n.getMessage('config_groupTabTemporaryStateForChildrenOfFirefoxView_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForChildrenOfFirefoxView',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForChildrenOfFirefoxView',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForChildrenOfFirefoxView',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          }
        ],
      },
      { type: 'separator',
        expert: true, },
      {
        title:   browser.i18n.getMessage('config_insertNewTabFromPinnedTabAt_caption'),
        expert:  true,
        children: [
          {
            title: browser.i18n.getMessage('config_insertNewTabFromPinnedTabAt_noControl'),
            key:   'insertNewTabFromPinnedTabAt',
            value: Constants.kINSERT_NO_CONTROL,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromPinnedTabAt_nextToLastRelatedTab') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'insertNewTabFromPinnedTabAt',
            value: Constants.kINSERT_NEXT_TO_LAST_RELATED_TAB,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromPinnedTabAt_top'),
            key:   'insertNewTabFromPinnedTabAt',
            value: Constants.kINSERT_TOP,
            type:  'radio',
          },
          {
            title: browser.i18n.getMessage('config_insertNewTabFromPinnedTabAt_end'),
            key:   'insertNewTabFromPinnedTabAt',
            value: Constants.kINSERT_END,
            type:  'radio',
          },
        ],
      },
      //{ type: 'separator' },
      {
        title: browser.i18n.getMessage('config_autoGroupNewTabsFromPinned_label'),
        key:   'autoGroupNewTabsFromPinned',
        type:  'checkbox',
        expert: true,
      },
      {
        title: browser.i18n.getMessage('config_groupTabTemporaryStateForChildrenOfPinned_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForChildrenOfPinned',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForChildrenOfPinned',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForChildrenOfPinned',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          }
        ]
      },
    ]
  },
  {
    title:    browser.i18n.getMessage('config_newTab_caption'),
    children: [
      {
        title: browser.i18n.getMessage('config_newTabAction_caption'),
        enabled: false
      },
      {
        title: indent() + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_before'),
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabCommand_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabCommand_after'),
            key:   'autoAttachOnNewTabCommand',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          }
        ]
      },
      {
        title: indent() + browser.i18n.getMessage('config_inheritContextualIdentityToChildTabMode_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToChildTabMode_default'),
            key:   'inheritContextualIdentityToChildTabMode',
            value: Constants.kCONTEXTUAL_IDENTITY_DEFAULT,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToChildTabMode_parent'),
            key:   'inheritContextualIdentityToChildTabMode',
            value: Constants.kCONTEXTUAL_IDENTITY_FROM_PARENT,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToChildTabMode_lastActive'),
            key:   'inheritContextualIdentityToChildTabMode',
            value: Constants.kCONTEXTUAL_IDENTITY_FROM_LAST_ACTIVE,
            type:  'radio'
          }
        ]
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_newTabButton_caption'),
        enabled: false,
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_before'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_nextSiblingWithInheritedContainer') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonMiddleClick_after') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'autoAttachOnNewTabButtonMiddleClick',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING_WITH_INHERITED_CONTAINER,
            type:  'radio'
          }
        ],
      },
      {
        title:       indent() + browser.i18n.getMessage('config_middleClickPasteURLOnNewTabButton_label'),
        expert:      true,
        key:         'middleClickPasteURLOnNewTabButton',
        type:        'checkbox',
        permissions: Permissions.CLIPBOARD_READ,
      },
      {
        title: indent() + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_before'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_nextSiblingWithInheritedContainer') + delimiter + browser.i18n.getMessage('config_autoAttachOnNewTabButtonAccelClick_after') + ' ' + browser.i18n.getMessage('config_firefoxCompatible_choice'),
            key:   'autoAttachOnNewTabButtonAccelClick',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING_WITH_INHERITED_CONTAINER,
            type:  'radio'
          }
        ]
      },
      {
        title:    indent() + browser.i18n.getMessage('config_longPressOnNewTabButton_before'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_longPressOnNewTabButton_newTabAction') + delimiter + browser.i18n.getMessage('config_longPressOnNewTabButton_after'),
            key:   'longPressOnNewTabButton',
            value: 'newtab-action-selector',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_longPressOnNewTabButton_contextualIdentities') + delimiter + browser.i18n.getMessage('config_longPressOnNewTabButton_after'),
            key:   'longPressOnNewTabButton',
            value: 'contextual-identities-selector',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_longPressOnNewTabButton_none') + delimiter + browser.i18n.getMessage('config_longPressOnNewTabButton_after'),
            key:   'longPressOnNewTabButton',
            value: '',
            type:  'radio'
          }
        ],
      },
      {
        title: browser.i18n.getMessage('config_showNewTabActionSelector_label'),
        key:   'showNewTabActionSelector',
        type:  'checkbox',
        expert: true,
      },
      {
        title: browser.i18n.getMessage('config_showContextualIdentitiesSelector_label'),
        key:   'showContextualIdentitiesSelector',
        type:  'checkbox',
        expert: true,
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_autoAttachWithURL_caption'),
        enabled: false,
        expert: true,
      },
      {
        title:    indent() + browser.i18n.getMessage('config_autoAttachOnDuplicated_before'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnDuplicated_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnDuplicated_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:   'autoAttachOnDuplicated',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          }
        ]
      },
      {
        title:    indent() + browser.i18n.getMessage('config_sameSiteOrphan_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_independent') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachSameSiteOrphan_before') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachSameSiteOrphan_after'),
            key:   'autoAttachSameSiteOrphan',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          { type: 'separator' },
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToSameSiteOrphanMode_label'),
            children: [
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToSameSiteOrphanMode_default'),
                key:   'inheritContextualIdentityToSameSiteOrphanMode',
                value: Constants.kCONTEXTUAL_IDENTITY_DEFAULT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToSameSiteOrphanMode_parent'),
                key:   'inheritContextualIdentityToSameSiteOrphanMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_PARENT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToSameSiteOrphanMode_lastActive'),
                key:   'inheritContextualIdentityToSameSiteOrphanMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_LAST_ACTIVE,
                type:  'radio'
              }
            ]
          }
        ]
      },
      {
        title:    indent() + browser.i18n.getMessage('config_fromExternal_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnOpenedFromExternal_after'),
            key:   'autoAttachOnOpenedFromExternal',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          { type: 'separator' },
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromExternalMode_label'),
            children: [
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromExternalMode_default'),
                key:   'inheritContextualIdentityToTabsFromExternalMode',
                value: Constants.kCONTEXTUAL_IDENTITY_DEFAULT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromExternalMode_parent'),
                key:   'inheritContextualIdentityToTabsFromExternalMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_PARENT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromExternalMode_lastActive'),
                key:   'inheritContextualIdentityToTabsFromExternalMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_LAST_ACTIVE,
                type:  'radio'
              }
            ]
          }
        ]
      },
      { type: 'separator',
        expert: true, },
      {
        title:    indent() + browser.i18n.getMessage('config_anyOtherTrigger_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_noControl') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after') + ' ' + browser.i18n.getMessage('config_recommended_choice'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_DO_NOTHING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_independent') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_OPEN_AS_ORPHAN,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_childTop') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_childEnd') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_OPEN_AS_CHILD_END,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_sibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_OPEN_AS_SIBLING,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_before') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_nextSibling') + delimiter + browser.i18n.getMessage('config_autoAttachOnAnyOtherTrigger_after'),
            key:   'autoAttachOnAnyOtherTrigger',
            value: Constants.kNEWTAB_OPEN_AS_NEXT_SIBLING,
            type:  'radio'
          },
          { type: 'separator' },
          {
            title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromAnyOtherTriggerMode_label'),
            get enabled() {
              return configs.autoAttachOnAnyOtherTrigger != Constants.kNEWTAB_DO_NOTHING;
            },
            children: [
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromAnyOtherTriggerMode_default'),
                key:   'inheritContextualIdentityToTabsFromAnyOtherTriggerMode',
                value: Constants.kCONTEXTUAL_IDENTITY_DEFAULT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromAnyOtherTriggerMode_parent'),
                key:   'inheritContextualIdentityToTabsFromAnyOtherTriggerMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_PARENT,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_inheritContextualIdentityToTabsFromAnyOtherTriggerMode_lastActive'),
                key:   'inheritContextualIdentityToTabsFromAnyOtherTriggerMode',
                value: Constants.kCONTEXTUAL_IDENTITY_FROM_LAST_ACTIVE,
                type:  'radio'
              }
            ]
          }
        ]
      },
      { type: 'separator',
        expert: true, },
      {
        title: browser.i18n.getMessage('config_groupTab_caption'),
        enabled: false,
        expert: true,
      },
      {
        dynamicTitle: true,
        get title() {
          return indent() + browser.i18n.getMessage('config_tabBunchesDetectionTimeout_before') + delimiter + configs.tabBunchesDetectionTimeout + delimiter + browser.i18n.getMessage('config_tabBunchesDetectionTimeout_after');
        },
        enabled: false,
        expert: true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_autoGroupNewTabsFromBookmarks_label'),
        key:   'autoGroupNewTabsFromBookmarks',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_restoreTreeForTabsFromBookmarks_label'),
        key:   'restoreTreeForTabsFromBookmarks',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_autoGroupNewTabsFromOthers_label'),
        key:   'autoGroupNewTabsFromOthers',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_warnOnAutoGroupNewTabs_label'),
        key:   'warnOnAutoGroupNewTabs',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent(4) + browser.i18n.getMessage('config_warnOnAutoGroupNewTabsWithListing_label'),
        key:   'warnOnAutoGroupNewTabsWithListing',
        type:  'checkbox',
        expert: true
      },
      { type: 'separator',
        expert: true },
      {
        title: indent() + browser.i18n.getMessage('config_renderTreeInGroupTabs_label'),
        key:   'renderTreeInGroupTabs',
        type:  'checkbox',
        expert: true
      },
      { type: 'separator',
        expert: true },
      {
        title: browser.i18n.getMessage('config_groupTabTemporaryState_caption'),
        enabled: false,
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_groupTabTemporaryStateForNewTabsFromBookmarks_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForNewTabsFromBookmarks',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForNewTabsFromBookmarks',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForNewTabsFromBookmarks',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          }
        ]
      },
      {
        title: indent() + browser.i18n.getMessage('config_groupTabTemporaryStateForNewTabsFromOthers_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForNewTabsFromOthers',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForNewTabsFromOthers',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForNewTabsFromOthers',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          }
        ]
      },
      {
        title: indent() + browser.i18n.getMessage('config_groupTabTemporaryStateForOrphanedTabs_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForOrphanedTabs',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForOrphanedTabs',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForOrphanedTabs',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          }
        ]
      },
      {
        title: indent() + browser.i18n.getMessage('config_groupTabTemporaryStateForAPI_label'),
        expert: true,
        children: [
          {
            title: browser.i18n.getMessage('config_groupTabTemporaryState_option_default'),
            key:   'groupTabTemporaryStateForAPI',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_NOTHING,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporary_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForAPI',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_PASSIVE,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_before')}${browser.i18n.getMessage('groupTab_temporaryAggressive_label')}${browser.i18n.getMessage('config_groupTabTemporaryState_option_checked_after')}`,
            key:   'groupTabTemporaryStateForAPI',
            value: Constants.kGROUP_TAB_TEMPORARY_STATE_AGGRESSIVE,
            type:  'radio'
          },
        ],
      },
    ],
  },
  {
    title:    browser.i18n.getMessage('config_treeBehavior_caption'),
    children: [
      {
        title: browser.i18n.getMessage('config_autoCollapseExpandSubtreeOnAttach_label'),
        key:   'autoCollapseExpandSubtreeOnAttach',
        type:  'checkbox',
        expert: true,
      },
      {
        title: browser.i18n.getMessage('config_autoCollapseExpandSubtreeOnSelect_label'),
        key:   'autoCollapseExpandSubtreeOnSelect',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_autoCollapseExpandSubtreeOnSelectExceptActiveTabRemove_label'),
        key:   'autoCollapseExpandSubtreeOnSelectExceptActiveTabRemove',
        type:  'checkbox',
        expert: true
      },
      {
        title: browser.i18n.getMessage('config_unfocusableCollapsedTab_label'),
        key:   'unfocusableCollapsedTab',
        type:  'checkbox',
        expert: true
      },
      {
        title: browser.i18n.getMessage('config_autoDiscardTabForUnexpectedFocus_label'),
        key:   'autoDiscardTabForUnexpectedFocus',
        type:  'checkbox',
        expert: true
      },
      {
        title: browser.i18n.getMessage('config_avoidDiscardedTabToBeActivatedIfPossible_label'),
        key:   'avoidDiscardedTabToBeActivatedIfPossible',
        type:  'checkbox',
        expert: true,
      },
      {
        title:       browser.i18n.getMessage('config_requestPermissions_allUrls_ctrlTabTracking'),
        key:         'skipCollapsedTabsForTabSwitchingShortcuts',
        type:        'checkbox',
        permissions: Permissions.ALL_URLS,
        get canRevoke() {
          return !configs.tabPreviewTooltip && !configs.skipCollapsedTabsForTabSwitchingShortcuts;
        },
      },
      {
        dynamicTitle: true,
        get title() {
          return indent() + browser.i18n.getMessage('config_autoExpandOnTabSwitchingShortcutsDelay_before') + delimiter + configs.autoExpandOnTabSwitchingShortcutsDelay + delimiter + browser.i18n.getMessage('config_autoExpandOnTabSwitchingShortcutsDelay_after');
        },
        key:   'autoExpandOnTabSwitchingShortcuts',
        type:  'checkbox',
        expert: true
      },
      {
        title:   indent() + browser.i18n.getMessage('config_accelKey_label'),
        enabled: false,
        expert:  true
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_accelKey_auto'),
        key:   'accelKey',
        value: '',
        type:  'radio',
        expert: true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_accelKey_alt'),
        key:   'accelKey',
        value: 'alt',
        type:  'radio',
        expert: true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_accelKey_control'),
        key:   'accelKey',
        value: 'control',
        type:  'radio',
        expert: true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_accelKey_meta'),
        key:   'accelKey',
        value: 'meta',
        type:  'radio',
        expert: true,
      },
      { type: 'separator', expert: true },
      {
        title:    browser.i18n.getMessage('config_treeDoubleClickBehavior_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_treeDoubleClickBehavior_toggleCollapsed'),
            key:   'treeDoubleClickBehavior',
            value: Constants.kTREE_DOUBLE_CLICK_BEHAVIOR_TOGGLE_COLLAPSED,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_treeDoubleClickBehavior_toggleSticky'),
            key:   'treeDoubleClickBehavior',
            value: Constants.kTREE_DOUBLE_CLICK_BEHAVIOR_TOGGLE_STICKY,
            type:  'radio'
          },
          {
            title: `${browser.i18n.getMessage('config_treeDoubleClickBehavior_close')}${browser.i18n.getMessage('config_treeDoubleClickBehavior_close_note')}`,
            key:   'treeDoubleClickBehavior',
            value: Constants.kTREE_DOUBLE_CLICK_BEHAVIOR_CLOSE,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_treeDoubleClickBehavior_none'),
            key:   'treeDoubleClickBehavior',
            value: Constants.kTREE_DOUBLE_CLICK_BEHAVIOR_NONE,
            type:  'radio'
          }
        ]
      },
      {
        title:    browser.i18n.getMessage('config_successorTabControlLevel_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_successorTabControlLevel_inTree'),
            key:   'successorTabControlLevel',
            value: Constants.kSUCCESSOR_TAB_CONTROL_IN_TREE,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_successorTabControlLevel_simulateDefault'),
            key:   'successorTabControlLevel',
            value: Constants.kSUCCESSOR_TAB_CONTROL_SIMULATE_DEFAULT,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_successorTabControlLevel_never'),
            key:   'successorTabControlLevel',
            value: Constants.kSUCCESSOR_TAB_CONTROL_NEVER,
            type:  'radio'
          }
        ]
      },
      {
        title: browser.i18n.getMessage('config_simulateSelectOwnerOnClose_label'),
        key:   'simulateSelectOwnerOnClose',
        type:  'checkbox',
        get visible() {
          return typeof browser.tabs.moveInSuccession == 'function';
        },
        expert: true,
      },
      {
        title:    browser.i18n.getMessage('config_parentTabOperationBehaviorMode_caption'),
        children: [
          {
            title: browser.i18n.getMessage('config_parentTabOperationBehaviorMode_parallel'),
            key:   'parentTabOperationBehaviorMode',
            value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_MODE_PARALLEL,
            type:  'radio'
          },
          {
            title: indent() + browser.i18n.getMessage('config_closeParentBehavior_insideSidebar'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteFirst'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteAll'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              }
            ]
          },
          {
            title: indent() + browser.i18n.getMessage('config_closeParentBehavior_outsideSidebar'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteFirst'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteAll'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              }
            ]
          },
          { type: 'separator',
            expert: true, },
          {
            title: browser.i18n.getMessage('config_parentTabOperationBehaviorMode_consistent'),
            key:   'parentTabOperationBehaviorMode',
            value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_MODE_CONSISTENT,
            type:  'radio'
          },
          {
            title: indent() + browser.i18n.getMessage('config_parentTabOperationBehaviorMode_consistent_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteFirst'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteAll'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_parentTabOperationBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              }
            ]
          },
          { type: 'separator',
            expert: true, },
          {
            title: browser.i18n.getMessage('config_parentTabOperationBehaviorMode_custom'),
            key:   'parentTabOperationBehaviorMode',
            value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_MODE_CUSTOM,
            type:  'radio',
            expert: true,
          },
          {
            title: indent() + browser.i18n.getMessage('config_closeParentBehavior_insideSidebar_expanded_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_entireTree'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteFirst'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteAll'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_detach'),
                key:   'closeParentBehavior_insideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent() + browser.i18n.getMessage('config_closeParentBehavior_outsideSidebar_collapsed_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_entireTree'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteFirst'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteAll'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_detach'),
                key:   'closeParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent(2) + browser.i18n.getMessage('config_closeParentBehavior_noSidebar_collapsed_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_entireTree'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteFirst'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteAll'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_detach'),
                key:   'closeParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent() + browser.i18n.getMessage('config_closeParentBehavior_outsideSidebar_expanded_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_entireTree'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteFirst'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteAll'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_detach'),
                key:   'closeParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent(2) + browser.i18n.getMessage('config_closeParentBehavior_noSidebar_expanded_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_entireTree'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_replaceWithGroupTab'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteFirst'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteAll'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_promoteIntelligently'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_closeParentBehavior_detach'),
                key:   'closeParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent() + browser.i18n.getMessage('config_moveParentBehavior_outsideSidebar_collapsed_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_entireTree'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_replaceWithGroupTab'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteFirst'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteAll'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteIntelligently'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_detach'),
                key:   'moveParentBehavior_outsideSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent(2) + browser.i18n.getMessage('config_moveParentBehavior_noSidebar_collapsed_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_entireTree'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_replaceWithGroupTab'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteFirst'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteAll'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteIntelligently'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_detach'),
                key:   'moveParentBehavior_noSidebar_collapsed',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent() + browser.i18n.getMessage('config_moveParentBehavior_outsideSidebar_expanded_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_entireTree'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_replaceWithGroupTab'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteFirst'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteAll'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteIntelligently'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_detach'),
                key:   'moveParentBehavior_outsideSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          },
          {
            title: indent(2) + browser.i18n.getMessage('config_moveParentBehavior_noSidebar_expanded_caption'),
            expert: true,
            children: [
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_entireTree'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_ENTIRE_TREE,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_replaceWithGroupTab'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_REPLACE_WITH_GROUP_TAB,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteFirst'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_FIRST_CHILD,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteAll'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_ALL_CHILDREN,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_promoteIntelligently'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_PROMOTE_INTELLIGENTLY,
                type:  'radio'
              },
              {
                title: browser.i18n.getMessage('config_moveParentBehavior_detach'),
                key:   'moveParentBehavior_noSidebar_expanded',
                value: Constants.kPARENT_TAB_OPERATION_BEHAVIOR_DETACH_ALL_CHILDREN,
                type:  'radio'
              }
            ]
          }
        ]
      },
      {
        title:    browser.i18n.getMessage('config_fixupTreeOnTabVisibilityChanged_caption'),
        children: [
          {
            title: browser.i18n.getMessage('config_fixupTreeOnTabVisibilityChanged_fix'),
            key:   'fixupTreeOnTabVisibilityChanged',
            value: true,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_fixupTreeOnTabVisibilityChanged_keep'),
            key:   'fixupTreeOnTabVisibilityChanged',
            value: false,
            type:  'radio'
          }
        ]
      },
      {
        title:    browser.i18n.getMessage('config_insertNewChildAt_caption'),
        expert:   true,
        children: [
          {
            title: browser.i18n.getMessage('config_insertNewChildAt_noControl'),
            key:   'insertNewChildAt',
            value: Constants.kINSERT_NO_CONTROL,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_insertNewChildAt_nextToLastRelatedTab'),
            key:   'insertNewChildAt',
            value: Constants.kINSERT_NEXT_TO_LAST_RELATED_TAB,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_insertNewChildAt_top'),
            key:   'insertNewChildAt',
            value: Constants.kINSERT_TOP,
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_insertNewChildAt_end'),
            key:   'insertNewChildAt',
            value: Constants.kINSERT_END,
            type:  'radio'
          }
        ]
      },
    ]
  },
  {
    title:    browser.i18n.getMessage('config_more_caption'),
    children: [
      {
        title:    browser.i18n.getMessage('config_drag_caption'),
        enabled:  false,
      },
      //{ type: 'separator' },
      {
        title: indent() + browser.i18n.getMessage('config_tabDragBehavior_caption'),
        enabled: false,
      },
      // These options are too complex to put in the menu UI, so I simply redirect to the options page.
      {
        title: indent(2) + browser.i18n.getMessage('config_tabDragBehavior_label') + '...',
        url:   `${Constants.kSHORTHAND_URIS.options}#tabDragBehaviorConfigsGroup`,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_tabDragBehaviorShift_label') + '...',
        url:   `${Constants.kSHORTHAND_URIS.options}#tabDragBehaviorConfigsGroup`,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_showTabDragBehaviorNotification_label'),
        key:   'showTabDragBehaviorNotification',
        type:  'checkbox',
        expert:  true,
      },
      //{ type: 'separator' },
      {
        title:   indent() + browser.i18n.getMessage('config_dropLinksOnTabBehavior_caption'),
        enabled: false,
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_dropLinksOnTabBehavior_ask'),
        key:   'dropLinksOnTabBehavior',
        value: Constants.kDROPLINK_ASK,
        type:  'radio',
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_dropLinksOnTabBehavior_load'),
        key:   'dropLinksOnTabBehavior',
        value: Constants.kDROPLINK_LOAD,
        type:  'radio',
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_dropLinksOnTabBehavior_newtab'),
        key:   'dropLinksOnTabBehavior',
        value: Constants.kDROPLINK_NEWTAB,
        type:  'radio',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_simulateTabsLoadInBackgroundInverted_label'),
        type:  'checkbox',
        key:   'simulateTabsLoadInBackgroundInverted',
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_tabsLoadInBackgroundDiscarded_label'),
        type:  'checkbox',
        key:   'tabsLoadInBackgroundDiscarded',
        expert:  true,
      },
      //{ type: 'separator', expert: true },
      {
        title:   indent() + browser.i18n.getMessage('config_insertDroppedTabsAt_caption'),
        enabled: false,
        expert:  true,
      },
      {
        title:  indent(2) + browser.i18n.getMessage('config_insertDroppedTabsAt_inherit'),
        key:    'insertDroppedTabsAt',
        value:  Constants.kINSERT_INHERIT,
        type:   'radio',
        expert: true,
      },
      {
        title:  indent(2) + browser.i18n.getMessage('config_insertDroppedTabsAt_first'),
        key:    'insertDroppedTabsAt',
        value:  Constants.kINSERT_TOP,
        type:   'radio',
        expert: true,
      },
      {
        title:  indent(2) + browser.i18n.getMessage('config_insertDroppedTabsAt_end'),
        key:    'insertDroppedTabsAt',
        value:  Constants.kINSERT_END,
        type:   'radio',
        expert: true,
      },
      //{ type: 'separator', expert: true },
      {
        dynamicTitle: true,
        get title() {
          return indent() + browser.i18n.getMessage('config_autoExpandOnLongHoverDelay_before') + delimiter + configs.autoExpandOnLongHoverDelay +     delimiter + browser.i18n.getMessage('config_autoExpandOnLongHoverDelay_after');
        },
        key:    'autoExpandOnLongHover',
        type:   'checkbox',
        expert: true,
      },
      {
        title:  indent(2) + browser.i18n.getMessage('config_autoExpandOnLongHoverRestoreIniitalState_label'),
        key:    'autoExpandOnLongHoverRestoreIniitalState',
        type:   'checkbox',
        expert: true,
      },
      {
        title:  indent(2) + browser.i18n.getMessage('config_autoExpandIntelligently_label'),
        key:    'autoExpandIntelligently',
        type:   'checkbox',
        expert: true,
      },
      {
        title:  indent() + browser.i18n.getMessage('config_ignoreTabDropNearSidebarArea_label'),
        key:    'ignoreTabDropNearSidebarArea',
        type:   'checkbox',
        expert: true,
      },
      { type: 'separator' },
      {
        title:   browser.i18n.getMessage('config_advanced_caption'),
        enabled: false
      },
      {
        title: indent() + browser.i18n.getMessage('config_warnOnCloseTabs_label'),
        key:   'warnOnCloseTabs',
        type:  'checkbox'
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_warnOnCloseTabsByClosebox_label'),
        key:   'warnOnCloseTabsByClosebox',
        type:  'checkbox',
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_warnOnCloseTabsWithListing_label'),
        key:   'warnOnCloseTabsWithListing',
        type:  'checkbox',
        expert: true
      },
      {
        title: indent() + browser.i18n.getMessage('config_useCachedTree_label'),
        key:   'useCachedTree',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_persistCachedTree_label'),
        key:   'persistCachedTree',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_tabGroupsEnabled_label'),
        key:   'tabGroupsEnabled',
        type:  'checkbox',
        expert: true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_undoMultipleTabsClose_label'),
        key:   'undoMultipleTabsClose',
        type:  'checkbox',
        expert:  true,
      },
      {
        title:       indent() + browser.i18n.getMessage('config_requestPermissions_bookmarks_context'),
        type:        'checkbox',
        permissions: Permissions.BOOKMARKS
      },
      { type: 'separator' },
      {
        title:   browser.i18n.getMessage('config_debug_caption'),
        enabled: false
      },
      {
        title:    indent() + browser.i18n.getMessage('config_colorScheme_caption'),
        children: [
          {
            title: browser.i18n.getMessage('config_colorScheme_photon'),
            key:   'colorScheme',
            value: 'photon',
            type:  'radio'
          },
          {
            title: browser.i18n.getMessage('config_colorScheme_systemColor'),
            key:   'colorScheme',
            value: 'system-color',
            type:  'radio'
          }
        ]
      },
      {
        title: indent() + browser.i18n.getMessage('config_enableLinuxBehaviors_label'),
        key:   'enableLinuxBehaviors',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_enableMacOSBehaviors_label'),
        key:   'enableMacOSBehaviors',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_enableWindowsBehaviors_label'),
        key:   'enableWindowsBehaviors',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_loggingQueries_label'),
        key:   'loggingQueries',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent(2) + browser.i18n.getMessage('config_loggingConnectionMessages_label'),
        key:   'loggingConnectionMessages',
        type:  'checkbox',
        expert:  true,
      },
      {
        title: indent() + browser.i18n.getMessage('config_debug_label'),
        key:   'debug',
        type:  'checkbox'
      },
      { type: 'separator' },
      {
        title: browser.i18n.getMessage('config_showExpertOptions_label'),
        key:   'showExpertOptions',
        type:  'checkbox'
      }
    ]
  }
];

const mItemsById = new Map();
const mUpdatableItemsById = new Map();
const mExpertItems = new Set();

const MENU_CONTEXT = browser.browserAction ?
  'browser_action' : // Manifest V2
  'action'; // Manifest V3

function createItem(id, item, parent) {
  if (item.visible === false)
    return;

  const parentId = parent ? parent.id : null ;
  item.id = id;
  mItemsById.set(id, item);

  if (item.dynamicTitle) {
    item.lastTitle = item.title;
    mUpdatableItemsById.set(id, item);
  }
  if (item.type == 'checkbox' || item.type == 'radio') {
    mUpdatableItemsById.set(id, item);
  }

  const params = {
    id,
    title:    item.title?.replace(/^:|:$/g, ''),
    type:     item.type || 'normal',
    contexts: [MENU_CONTEXT],
    parentId
  };
  if ('enabled' in item)
    params.enabled = item.enabled;
  log('create: ', params);
  id = browser.menus.create(params);
  if (item.expert)
    mExpertItems.add(id);
  if (item.children) {
    for (let i = 0, maxi = item.children.length; i < maxi; i++) {
      const child = item.children[i];
      createItem(`${id}:${i}`, child, item);
    }
  }
}

if (browser.action/* Manifest V2 */ || browser.browserAction/* Manifest V3 */) {
  for (let i = 0, maxi = mItems.length; i < maxi; i++) {
    createItem(`browserActionItem:${i}`, mItems[i]);
  }

  browser.menus.onShown.addListener((info, _tab) => {
    if (!info.contexts.includes(MENU_CONTEXT))
      return;

    let updated = false;
    for (const item of mUpdatableItemsById.values()) {
      const params = {};
      if (item.dynamicTitle) {
        const title = item.title;
        if (title != item.lastTitle) {
          item.lastTitle = title;
          params.title = title;
        }
      }
      if (item.type == 'checkbox' || item.type == 'radio') {
        const checkedFromConfigs = 'value' in item ? configs[item.key] == item.value : configs[item.key];
        params.checked = checkedFromConfigs;
        if (item.permissions) {
          Permissions.isGranted(item.permissions)
            .then(async granted => {
              const checked = granted && (!('key' in item) || checkedFromConfigs);
              if (checked == granted &&
                  params.checked == granted)
                return;
              item.checked = checked;
              await browser.menus.update(item.id, { checked }).catch(ApiTabs.createErrorSuppressor());
              await browser.menus.refresh().catch(ApiTabs.createErrorSuppressor());
            });
          delete params.checked;
        }
      }
      if ('visible' in item)
        params.visible = item.visible;
      if ('checked' in params || 'title' in params) {
        browser.menus.update(item.id, params).catch(ApiTabs.createErrorSuppressor());
        updated = true;
      }
    }
    if (updated)
      browser.menus.refresh().catch(ApiTabs.createErrorSuppressor());
  });

  browser.menus.onClicked.addListener((info, _tab) => {
    const item = mItemsById.get(info.menuItemId);
    log('onClicked ', { id: info.menuItemId, item });
    if (!item)
      return;

    if (item.url) {
      browser.tabs.create({ url: item.url });
      return;
    }
    if (item.key) {
      if (info.checked)
        configs[item.key] = 'value' in item ? item.value : true;
      else if (!('value' in item))
        configs[item.key] = false;
    }
    if (item.permissions) {
      if (!info.checked) {
        if (item.canRevoke !== false)
          browser.permissions.remove(item.permissions).catch(ApiTabs.createErrorSuppressor());
      }
      else {
        browser.permissions.request(item.permissions)
          .then(async granted => {
            if (granted === undefined)
              granted = await Permissions.isGranted(item.permissions);
            if (granted) {
              browser.runtime.sendMessage({
                type:        Constants.kCOMMAND_NOTIFY_PERMISSIONS_GRANTED,
                permissions: item.permissions
              }).catch(_error => {});
            }
          })
          .catch(ApiTabs.createErrorHandler());
      }
    }
  });


  function updateExpertOptionsVisibility() {
    for (const id of mExpertItems) {
      browser.menus.update(id, { visible: configs.showExpertOptions });
    }
    browser.menus.refresh();
  }
  configs.$addObserver(key => {
    if (key == 'showExpertOptions')
      updateExpertOptionsVisibility();
  });
  configs.$loaded.then(updateExpertOptionsVisibility);
}