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/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
ZBX_Promise.PENDING = 0;
ZBX_Promise.RESOLVED = 1;
ZBX_Promise.REJECTED = 2;
/**
* Promise API polyfill. This polyfill contains only things that we use.
* Please update this once richer Promises API needs to be used.
*
* Warning: method chaining is not implemented.
*
* @param {callable} resolver
*/
function ZBX_Promise(resolver) {
this.state = ZBX_Promise.PENDING;
this.onResolve = function() {};
this.onReject = function() {};
resolver(this.resolve.bind(this), this.reject.bind(this));
}
/**
* @param {mixed} result
*/
ZBX_Promise.prototype.reject = function(result) {
this.state = ZBX_Promise.REJECTED;
this.onReject(result);
};
/**
* @param {mixed} result
*/
ZBX_Promise.prototype.resolve = function(result) {
this.state = ZBX_Promise.RESOLVED;
this.onResolve(result);
};
/**
* @param {callable} closure
*/
ZBX_Promise.prototype.catch = function(closure) {
this.onReject = closure;
return this;
};
/**
* @param {callable} closure
*/
ZBX_Promise.prototype.then = function(closure) {
this.onResolve = closure;
return this;
};
if (!window.Promise) {
window.Promise = ZBX_Promise;
}
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