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/>.

**/

​

​

/**

 * Singleton class, containing information about standard widget data types.

 */

class CWidgetsData {

​

    static DATA_TYPE_EVENT_ID =             '_eventid';

    static DATA_TYPE_HOST_GROUP_ID =        '_hostgroupid';

    static DATA_TYPE_HOST_GROUP_IDS =       '_hostgroupids';

    static DATA_TYPE_HOST_ID =              '_hostid';

    static DATA_TYPE_HOST_IDS =             '_hostids';

    static DATA_TYPE_ITEM_ID =              '_itemid';

    static DATA_TYPE_ITEM_IDS =             '_itemids';

    static DATA_TYPE_ITEM_PROTOTYPE_ID =    '_itemprototypeid';

    static DATA_TYPE_GRAPH_ID =             '_graphid';

    static DATA_TYPE_GRAPH_PROTOTYPE_ID =   '_graphprototypeid';

    static DATA_TYPE_MAP_ID =               '_mapid';

    static DATA_TYPE_SERVICE_ID =           '_serviceid';

    static DATA_TYPE_SLA_ID =               '_slaid';

    static DATA_TYPE_TIME_PERIOD =          '_timeperiod';

​

    /**

     * @type {CWidgetsData|null}

     */

    static #singleton = null;

​

    #defaults = new Map();

​

    static #getSingleton() {

        if (CWidgetsData.#singleton === null) {

            CWidgetsData.#singleton = new CWidgetsData();

        }

​

        return CWidgetsData.#singleton;

    }

​

    static getDefault(data_type) {

        const singleton = CWidgetsData.#getSingleton();

​

        if (singleton.#defaults.has(data_type)) {

            return singleton.#defaults.get(data_type).value;

        }

​

        return null;

    }

​

    static setDefault(data_type, value, {is_comparable} = {}) {

        const singleton = CWidgetsData.#getSingleton();

​

        singleton.#defaults.set(data_type, {value, is_comparable});

    }

​

    static isDefault(data_type, value) {

        const singleton = CWidgetsData.#getSingleton();

​

        if (singleton.#defaults.has(data_type)) {

            const _default = singleton.#defaults.get(data_type);

​

            if (_default.is_comparable && JSON.stringify(value) === JSON.stringify(_default.value)) {

                return true;

            }

        }

​

        return false;

    }

​

    constructor() {

        this.#defaults.set(CWidgetsData.DATA_TYPE_EVENT_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_HOST_GROUP_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_HOST_GROUP_IDS, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_HOST_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_HOST_IDS, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_ITEM_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_ITEM_IDS, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_ITEM_PROTOTYPE_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_GRAPH_ID, {value: [], is_comparable: true});

        this.#defaults.set(CWidgetsData.DATA_TYPE_GRAPH_PROTOTYPE_ID, {value: [], is_comparable: true});