Local Storage Service Provider

LocalStorage.js

/**
 * Angular App Factory: LocalStorage
 */
(function() {

    'use strict';

    angular.module('app.factories')
           .factory('LocalStorage', LocalStorage);

    function LocalStorage($window) {

        var factory = {};

        /////////////////////
        // Service Methods //
        /////////////////////

        factory.RemoveItem = RemoveItem;
        factory.GetObject  = GetObject;
        factory.Clear      = Clear;
        factory.Set        = Set;
        factory.Get        = Get;

        return factory;

        //////////////////////////
        // Function Definitions //
        //////////////////////////

        /**
         * Store a value in to window.localStorage
         *
         * @param {String} key - Unique identifier for the storage
         * @param {Any}    val - The value to be stored
         */
        function Set(key, val) {

            if (typeof val === 'object')
                $window.localStorage.setItem(key, JSON.stringify(val));
            else
                $window.localStorage.setItem(key, val);
            
        }

        /**
         * Gets the data from window.localStorage
         *
         * @param {String} key - Unique identifer for the storage
         *
         * @return {Any except Object}
         */
        function Get(key) {

            return $window.localStorage[key];

        }

        /** 
         * Gets the data object from window.localStorage
         *
         * @param {String} key - Unique identifer for the storage
         *
         * @return {Object}
         */
        function GetObject(key) {
            
            return ($window.localStorage[key] === 'undefined') ? null : JSON.parse($window.localStorage[key] || null);

        }

        /**
         * Removes the data in window.localStorage
         *
         * @param {String} key - Unique identifer for the storage
         */
        function RemoveItem(key) {

            $window.localStorage.removeItem(key);

        }

        /**
         * Clears the data in window.localStorage
         */
        function Clear() {

            $window.localStorage.clear();

        }

    }

}());