Zabbix

/*

** Zabbix

** Copyright (C) 2001-2021 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.

**/

​

​

class ZSelect extends HTMLElement {

​

    constructor() {

        super();

​

        this._options_map = new Map();

​

        this._option_template = "#{label}";

        this._selected_option_template = "#{label}";

​

        this._highlighted_index = -1;

        this._preselected_index = -1;

​

        this._expanded = false;

        this._list_hovered = false;

​

        this._button = document.createElement('button');

        this._input = document.createElement('input');

        this._list = document.createElement('ul');

​

        this._events = {};

​

        this._is_connected = false;

    }

​

    connectedCallback() {

        this._is_connected = true;

​

        this.init();

        this.registerEvents();

    }

​

    disconnectedCallback() {

        this.unregisterEvents();

    }

​

    /**

     * @return {array}

     */

    static get observedAttributes() {

        return ['name', 'value', 'disabled', 'readonly', 'width'];

    }

​