signal-desktop/libtextsecure/storage.js

'use strict';

(function() {
  /************************************************
   *** Utilities to store data in local storage ***
   ************************************************/
  window.textsecure = window.textsecure || {};
  window.textsecure.storage = window.textsecure.storage || {};

  // Overrideable storage implementation
  window.textsecure.storage.impl = window.textsecure.storage.impl || {
    /*****************************
     *** Base Storage Routines ***
     *****************************/
    put: function(key, value) {
      if (value === undefined) throw new Error('Tried to store undefined');
      localStorage.setItem('' + key, textsecure.utils.jsonThing(value));
    },

    get: function(key, defaultValue) {
      var value = localStorage.getItem('' + key);
      if (value === null) return defaultValue;
      return JSON.parse(value);
    },

    remove: function(key) {
      localStorage.removeItem('' + key);
    },
  };

  window.textsecure.storage.put = function(key, value) {
    return textsecure.storage.impl.put(key, value);
  };

  window.textsecure.storage.get = function(key, defaultValue) {
    return textsecure.storage.impl.get(key, defaultValue);
  };

  window.textsecure.storage.remove = function(key) {
    return textsecure.storage.impl.remove(key);
  };
})();