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/>.

**/

​

​

class CWidgetFieldCheckboxList {

​

    /**

     * @type {HTMLInputElement}

     */

    #empty_input_element;

​

    /**

     * @type {Array<HTMLInputElement>}

     */

    #checkboxes;

​

    constructor(field_name) {

        this.#empty_input_element = document.querySelector(`input[type="hidden"][name="${field_name}"]`);

        this.#checkboxes = [...document.querySelectorAll(`input[type="checkbox"][name="${field_name}[]"]`)];

​

        this.#initField();

        this.#update();

    }

​

    #initField() {

        const observer = new MutationObserver(() => this.#update());

​

        for (const checkbox of this.#checkboxes) {

            checkbox.addEventListener('change', () => this.#update());

            observer.observe(checkbox, {attributeFilter: ['disabled']});

        }

    }

​

    #update() {

        this.#empty_input_element.disabled = this.#checkboxes

            .filter((checkbox) => checkbox.checked && !checkbox.disabled).length > 0;

    }

}