Taras Machyshyn
116 lines
3.4 KiB
JavaScript
116 lines
3.4 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) 2014-2015 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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Espo.Cache = function () {
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if (!this.get('app', 'timestamp')) {
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this.storeTimestamp();
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}
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};
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_.extend(Espo.Cache.prototype, {
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_prefix: 'cache',
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handleActuality: function (cacheTimestamp) {
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var stored = parseInt(this.get('app', 'cacheTimestamp'));
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if (stored) {
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if (stored !== cacheTimestamp) {
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this.clear();
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this.storeTimestamp();
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}
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} else {
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this.clear();
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this.set('app', 'cacheTimestamp', cacheTimestamp);
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this.storeTimestamp();
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}
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},
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storeTimestamp: function () {
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var frontendCacheTimestamp = Date.now();
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this.set('app', 'timestamp', frontendCacheTimestamp);
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},
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_composeFullPrefix: function (type) {
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return this._prefix + '-' + type;
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},
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_composeKey: function (type, name) {
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return this._composeFullPrefix(type) + '-' + name;
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},
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_checkType: function (type) {
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if (typeof type === 'undefined' && toString.call(type) != '[object String]') {
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throw new TypeError("Bad type \"" + type + "\" passed to Bull.Cacher().");
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}
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},
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get: function (type, name) {
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this._checkType(type);
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var key = this._composeKey(type, name);
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var stored = localStorage.getItem(key);
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if (stored) {
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var str = stored;
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if (stored[0] == "{" || stored[0] == "[") {
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try {
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str = JSON.parse(stored);
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} catch (error) {
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str = stored;
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}
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stored = str;
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}
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return stored;
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}
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return null;
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},
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set: function (type, name, value) {
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this._checkType(type);
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var key = this._composeKey(type, name);
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if (value instanceof Object) {
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value = JSON.stringify(value);
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}
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localStorage.setItem(key, value);
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},
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clear: function (type, name) {
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var reText;
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if (typeof type !== 'undefined') {
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if (typeof name === 'undefined') {
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reText = '^' + this._composeFullPrefix(type);
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} else {
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reText = '^' + this._composeKey(type, name);
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}
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} else {
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reText = '^' + this._prefix + '-';
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}
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var re = new RegExp(reText);
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for (var i in localStorage) {
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if (re.test(i)) {
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delete localStorage[i];
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}
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}
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},
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});
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