Storage.service.js
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(function () {
var module = angular.module('framework.services.storage', [])
module.factory('$localStorage', _storageFactory('localStorage'));
module.factory('$sessionStorage', _storageFactory('sessionStorage'));
function _storageFactory(storageType) {
return ['$rootScope', '$window', '$log',
function ($rootScope, $window, $log) {
// #9: Assign a placeholder object if Web Storage is unavailable to prevent breaking the entire AngularJS app
var webStorage = $window[storageType] || ($log.warn('This browser does not support Web Storage!'), {}),
$storage = {
$default: function (items) {
for (var k in items) {
angular.isDefined($storage[k]) || ($storage[k] = items[k]);
}
return $storage;
},
$reset: function (items) {
for (var k in $storage) {
'$' === k[0] || delete $storage[k];
}
return $storage.$default(items);
}
},
_last$storage,
_debounce;
for (var i = 0, k; i < webStorage.length; i++) {
// #8, #10: `webStorage.key(i)` may be an empty string (or throw an exception in IE9 if `webStorage` is empty)
(k = webStorage.key(i)) && 'ngStorage-' === k.slice(0, 10) && ($storage[k.slice(10)] = angular.fromJson(webStorage.getItem(k)));
}
_last$storage = angular.copy($storage);
$rootScope.$watch(function () {
_debounce || (_debounce = setTimeout(function () {
_debounce = null;
if (!angular.equals($storage, _last$storage)) {
angular.forEach($storage, function (v, k) {
angular.isDefined(v) && '$' !== k[0] && webStorage.setItem('ngStorage-' + k, angular.toJson(v));
delete _last$storage[k];
});
for (var k in _last$storage) {
webStorage.removeItem('ngStorage-' + k);
}
_last$storage = angular.copy($storage);
}
}, 100));
});
// #6: Use `$window.addEventListener` instead of `angular.element` to avoid the jQuery-specific `event.originalEvent`
'localStorage' === storageType && $window.addEventListener && $window.addEventListener('storage', function (event) {
if ('ngStorage-' === event.key.slice(0, 10)) {
event.newValue ? $storage[event.key.slice(10)] = angular.fromJson(event.newValue) : delete $storage[event.key.slice(10)];
_last$storage = angular.copy($storage);
$rootScope.$apply();
}
});
return $storage;
}
];
}
})()