Zabbix

<?php

/*

** 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/>.

**/

​

/**

 * Interface describing basic set of methods for waitable objects.

 */

interface IWaitable {

​

    /**

     * Condition describing state when object is ready.

     *

     * @return callable

     */

    public function getReadyCondition();

​

    /**

     * Condition describing state when object is not ready.

     *

     * @return callable

     */

    public function getNotReadyCondition();

​

    /**

     * Condition describing state when object is present.

     *

     * @return callable

     */

    public function getPresentCondition();

​

    /**

     * Condition describing state when object is not present.

     *

     * @return callable

     */

    public function getNotPresentCondition();

​

    /**

     * Condition describing state when object is visible.

     *

     * @return callable

     */

    public function getVisibleCondition();

​

    /**

     * Condition describing state when object is not visible.

     *

     * @return callable

     */

    public function getNotVisibleCondition();

​

    /**