settings.js

cdbmanager.service('settings', ["$localStorage", function ($localStorage) {
  let self = this;

  $localStorage.settings = $localStorage.settings || {};

  this.initSetting = function (name, defaultValue) {
    if ($localStorage.settings[name] == undefined) {
      $localStorage.settings[name] = defaultValue;
    }
    self[name] = $localStorage.settings[name];
  };

  this.initSetting("rowsPerPage", 10);
  this.initSetting("sqlConsoleRowsPerPage", 10);
  this.initSetting("showAnalysisTables", false);
  this.initSetting("showOverviewTables", false);
}]);

cdbmanager.controller('settingsCtrl', ["$scope", "$localStorage", "settings", function ($scope, $localStorage, settings) {
  $scope.settings = settings;

  $scope.$watch(function () {
    return JSON.stringify(settings);
  }, function () {
    for (let key in settings) {
      if (settings.hasOwnProperty(key)) {
        $localStorage.settings[key] = settings[key];
      }
    }
  });
}]);