Yuri Kuznetsov
103 lines
3.1 KiB
JavaScript
103 lines
3.1 KiB
JavaScript
/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
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* Website: http://www.espocrm.com
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*
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* EspoCRM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* EspoCRM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with EspoCRM. If not, see http://www.gnu.org/licenses/.
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************************************************************************/
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(function (Espo, _, $, Backbone) {
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Espo.Metadata = function (cache) {
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this.cache = cache || null;
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this.data = {};
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this.ajax = $.ajax;
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}
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_.extend(Espo.Metadata.prototype, {
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cache: null,
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data: null,
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url: 'Metadata',
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load: function (callback, sync) {
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var sync = (typeof sync == 'undefined') ? false: sync;
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this.off('sync');
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this.once('sync', callback);
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if (!this.loadFromCache()) {
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this.fetch(sync);
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return;
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}
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this.trigger('sync');
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},
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fetch: function (sync) {
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var self = this;
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this.ajax({
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url: this.url,
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type: 'GET',
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dataType: 'JSON',
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async: !(sync || false),
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success: function (data) {
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self.data = data;
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self.storeToCache();
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self.trigger('sync');
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}
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});
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},
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get: function (path, defaultValue) {
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defaultValue = defaultValue || null;
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var pointer = this.data;
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var arr = path.split('.');
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var result = defaultValue;
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arr.forEach(function (key, i) {
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if (!(key in pointer)) {
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result = defaultValue;
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return;
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}
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if (arr.length - 1 == i) {
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result = pointer[key];
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}
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pointer = pointer[key];
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});
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return result;
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},
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loadFromCache: function () {
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if (this.cache) {
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var cached = this.cache.get('app', 'metadata');
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if (cached) {
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this.data = cached;
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return true;
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}
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}
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return null;
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},
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storeToCache: function () {
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if (this.cache) {
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this.cache.set('app', 'metadata', this.data);
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}
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},
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}, Backbone.Events);
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}).call(this, Espo, _, $, Backbone);
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