signal-desktop/js/storage.js
2015-05-15 11:39:23 -07:00

75 lines
2.4 KiB
JavaScript

/* vim: ts=4:sw=4
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
;(function() {
'use strict';
window.Whisper = window.Whisper || {};
var Item = Backbone.Model.extend({
database: Whisper.Database,
storeName: 'items'
});
var ItemCollection = Backbone.Collection.extend({
model: Item,
storeName: 'items',
database: Whisper.Database,
});
var ready = false;
var items = new ItemCollection();
items.on('reset', function() { ready = true; });
window.storage = {
/*****************************
*** Base Storage Routines ***
*****************************/
put: function(key, value) {
if (value === undefined)
throw new Error("Tried to store undefined");
var item = items.add({id: key, value: value});
item.save();
},
get: function(key, defaultValue) {
var item = items.get("" + key);
if (!item)
return defaultValue;
return item.get('value');
},
remove: function(key) {
var item = items.get("" + key);
if (item) {
items.remove(item);
item.destroy();
}
},
onready: function(callback) {
if (ready) {
callback();
} else {
items.on('reset', callback);
}
},
fetch: function() {
return new Promise(function(resolve) {
items.fetch({reset: true}).always(resolve);
});
}
};
window.textsecure = window.textsecure || {};
window.textsecure.storage = window.textsecure.storage || {};
window.textsecure.storage.impl = window.storage;
})();