Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

/**

 * jQuery based publish/subscribe handler.

 *

 * - $.subscribe(event_name, callback)

 * - $.unsubscribe(event_name, callback)

 * - $.publish(event_name, data_object)

 *

 */

(function($) {

    var pubsub = $({});

​

    $.subscribe = function() {

        pubsub.on.apply(pubsub, arguments);

    };

​

    $.unsubscribe = function() {

        pubsub.off.apply(pubsub, arguments);

    };

​

    $.publish = function() {

        pubsub.trigger.apply(pubsub, arguments);

    };

}(jQuery));

​

var overlays_stack = new OverlayCollection();

​

function isset(key, obj) {

    return (is_null(key) || is_null(obj)) ? false : (typeof(obj[key]) != 'undefined');

}

​

/**

 * @deprecated  use strict comparison instead

 *

 * @param obj

 * @returns {*}

 */

function empty(obj) {

    if (is_null(obj)) {

        return true;

    }

    if (obj === false) {

        return true;

    }

    if (is_string(obj) && obj === '') {

        return true;

    }

    if (typeof(obj) == 'undefined') {

        return true;