kuniwak / storage-events-for-closure

A better storage event module than using "goog.events.listen".

Storage event conformed to Closure

Here is a README for Japanese.
日本語のREADMEは こちら

Abstract

This is a module that contains storage event handlers and storage event classes.

See below.

goog.events.listen(window, 'storage', function(e) { alert(e.key); }) // => undefined

That is generally event handling, but the listener can not given some properties;
“key” or “oldValue” defined in W3C StorageEvent .

This module make to be able to given an event object likes W3C StorageEvent object.

var listener = new orga.events.StorageHandler();

listener.addEventListener(
  orga.events.StorageHandler.EventType.STORAGE,
  function(e) { alert(e.key); }); // => changed key string

Additionaly, this module addapted PrefixedMechanism .

var mechanism = new goog.storage.mechanism.HTML5LocalStorage();
var prefixedMechanism1 = new goog.storage.mechanism.PrefixedMechanism(mechanism, 'foo');
var storage1 = new goog.storage.Storage(prefixedMechanism1);
var prefixedMechanism2 = new goog.storage.mechanism.PrefixedMechanism(mechanism, 'bar');
var storage2 = new goog.storage.Storage(prefixedMechanism2);

var listener = new orga.events.PrefixedStorageHandler('bar');
listener.addEventListener(
  orga.events.PrefixedStorageHandler.EventType.STORAGE,
  function(e) { alert(e.key); });

storage1.set('foobar', '1234'); // listener not fired
storage2.set('foobar', '1234'); // listener fired

API Reference

Show the Wiki .