using a simple angular module for localstorage Note: it also saves the password into localStorage, this should be further improved to present a simple checkbox to the user asking if they want to save the password or notwith-route-provider
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var ls = angular.module('localStorage',[]); |
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ls.factory("$store",function($parse){ |
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/** |
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* Global Vars |
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*/ |
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var storage = (typeof window.localStorage === 'undefined') ? undefined : window.localStorage, |
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supported = !(typeof storage == 'undefined' || typeof window.JSON == 'undefined'); |
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var privateMethods = { |
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/** |
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* Pass any type of a string from the localStorage to be parsed so it returns a usable version (like an Object) |
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* @param res - a string that will be parsed for type |
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* @returns {*} - whatever the real type of stored value was |
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*/ |
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parseValue: function(res) { |
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var val; |
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try { |
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val = JSON.parse(res); |
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if (typeof val == 'undefined'){ |
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val = res; |
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} |
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if (val == 'true'){ |
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val = true; |
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} |
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if (val == 'false'){ |
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val = false; |
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} |
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if (parseFloat(val) == val && !angular.isObject(val) ){ |
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val = parseFloat(val); |
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} |
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} catch(e){ |
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val = res; |
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} |
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return val; |
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} |
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}; |
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var publicMethods = { |
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/** |
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* Set - let's you set a new localStorage key pair set |
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* @param key - a string that will be used as the accessor for the pair |
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* @param value - the value of the localStorage item |
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* @returns {*} - will return whatever it is you've stored in the local storage |
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*/ |
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set: function(key,value){ |
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if (!supported){ |
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try { |
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$.cookie(key, value); |
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return value; |
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} catch(e){ |
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console.log('Local Storage not supported, make sure you have the $.cookie supported.'); |
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} |
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} |
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var saver = JSON.stringify(value); |
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storage.setItem(key, saver); |
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return privateMethods.parseValue(saver); |
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}, |
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/** |
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* Get - let's you get the value of any pair you've stored |
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* @param key - the string that you set as accessor for the pair |
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* @returns {*} - Object,String,Float,Boolean depending on what you stored |
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*/ |
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get: function(key){ |
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if (!supported){ |
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try { |
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return privateMethods.parseValue($.cookie(key)); |
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} catch(e){ |
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return null; |
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} |
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} |
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var item = storage.getItem(key); |
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return privateMethods.parseValue(item); |
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}, |
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/** |
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* Remove - let's you nuke a value from localStorage |
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* @param key - the accessor value |
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* @returns {boolean} - if everything went as planned |
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*/ |
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remove: function(key) { |
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if (!supported){ |
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try { |
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$.cookie(key, null); |
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return true; |
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} catch(e){ |
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return false; |
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} |
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} |
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storage.removeItem(key); |
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return true; |
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}, |
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/** |
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* Bind - let's you directly bind a localStorage value to a $scope variable |
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* @param $scope - the current scope you want the variable available in |
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* @param key - the name of the variable you are binding |
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* @param def - the default value (OPTIONAL) |
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* @returns {*} - returns whatever the stored value is |
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*/ |
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bind: function ($scope, key, def) { |
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def = def || ''; |
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if (!publicMethods.get(key)) { |
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publicMethods.set(key, def); |
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} |
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$parse(key).assign($scope, publicMethods.get(key)); |
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$scope.$watch(key, function (val) { |
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publicMethods.set(key, val); |
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}, true); |
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return publicMethods.get(key); |
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} |
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}; |
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return publicMethods; |
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}); |
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