//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2017 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++

module.exports = function($rootScope, $window) {
  var menuList = null;

  this.toggleNavigation = function() {
    if ($rootScope.showNavigation) {
      menuList = hideSubMenuEntries();
    } else {
      showSubMenuEntries(menuList);
      focusFirstEntry();
    }
    $rootScope.showNavigation = !$rootScope.showNavigation;
    $rootScope.$broadcast('openproject.layout.navigationToggled', $rootScope.showNavigation);
    $window.sessionStorage.setItem('openproject:navigation-toggle',
      !$rootScope.showNavigation ? 'collapsed' : 'expanded');
  };
};

function hideSubMenuEntries() {
  var togglers = jQuery('#main-menu .main-item-wrapper.open .toggler');
  toggleMenus(togglers);

  return togglers;
}

function showSubMenuEntries(togglers) {
  if (togglers !== null) {
    toggleMenus(togglers);
  }
}

function toggleMenus(togglers) {
  togglers.each(function(index) {
    jQuery(this).trigger('click');
  });
}

function focusFirstEntry() {
  var element = jQuery('#main-menu .main-item-wrapper > a')[0];
  if (element)  {
    window.setTimeout(function(){
      element.focus();
    }, 100);
  }
}